├── README.md ├── driver ├── NtCreateLowboxToken.vcxproj ├── LowboxToken.h └── LowboxToken.c ├── tests ├── CLTTest.vcxproj └── CLTTest.cpp └── LICENSE /README.md: -------------------------------------------------------------------------------- 1 | # Precise Reimplementation of NtCreateLowBoxToken System Call 2 | 3 | A meticulously reverse-engineered implementation of the Windows NT kernel's NtCreateLowBoxToken native system call. This sophisticated reimplementation provides a comprehensive and binary-compatible replacement for the original system call functionality, with particular emphasis on security token manipulation and process isolation mechanisms. 4 | 5 | ## Architectural Overview 6 | 7 | This repository presents an independently developed reproduction of the `NtCreateLowBoxToken` native API implementation, a critical component in Windows security token manipulation and process isolation architecture. The implementation has been systematically reconstructed through precise reverse engineering of Windows 11 24H2 system call interfaces, ensuring behavioral consistency with the native implementation at the binary level. 8 | 9 | ## Technical Capabilities 10 | 11 | - Binary-compatible replacement for the native NtCreateLowBoxToken system call interface 12 | - Precise reproduction of Windows 11 24H2's internal token manipulation mechanisms 13 | - Comprehensive support for AppContainer security context creation and management 14 | - Kernel-mode driver implementation for system call interception 15 | - Demonstration of programmatic security boundary establishment 16 | 17 | ## Platform Compatibility Matrix 18 | 19 | Extensively validated across contemporary Windows NT-based operating systems: 20 | - Windows 11 Version 24H2 (10.0.26100.2605) 21 | - Windows 11 Version 23H2 (10.0.22631.4602) 22 | - Windows 10 Version 22H2 (10.0.19045.5247) 23 | 24 | ## Demonstration Implementation 25 | The repository incorporates a comprehensive demonstration application that: 26 | 27 | Facilitates kernel-mode driver installation and initialization 28 | 29 | Implements system call interception mechanisms 30 | 31 | Demonstrates programmatic AppContainer security context establishment 32 | 33 | Executes Notepad.exe within an AppContainer security boundary 34 | 35 | The demonstration utilizes select components from MalwareTech's AppContainerSandbox implementation 36 | 37 | ## Repository Architecture 38 | 39 | ├── driver/ # Kernel-mode implementation 40 | 41 | └── tests/ # Validation suite 42 | 43 | ## Build Requirements 44 | Prerequisites 45 | 46 | Microsoft Visual Studio 2022 Development Environment 47 | 48 | Windows Driver Development Kit (WDK) 49 | 50 | Windows Software Development Kit (SDK) 10.0.22621.0 or subsequent releases 51 | 52 | ## Attribution 53 | Demonstration implementation incorporates components from MalwareTech's AppContainerSandbox 54 | 55 | ## Licensing 56 | This implementation is distributed under the GNU General Public License v3.0. Refer to the LICENSE document for comprehensive terms. 57 | 58 | ## Implementation Notes 59 | Independent implementation, not affiliated with Microsoft Corporation 60 | 61 | Implementation deployed at operator's discretion. 62 | 63 | Not recommended for production environment deployment 64 | 65 | ## Community Participation 66 | Technical contributions are welcomed. Please initiate discussion through issue submission prior to modification proposals. 67 | -------------------------------------------------------------------------------- /driver/NtCreateLowboxToken.vcxproj: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | Debug 6 | x64 7 | 8 | 9 | Release 10 | x64 11 | 12 | 13 | Debug 14 | ARM64 15 | 16 | 17 | Release 18 | ARM64 19 | 20 | 21 | 22 | {BCD776BB-9E6A-4F29-A737-3207F60912A4} 23 | {dd38f7fc-d7bd-488b-9242-7d8754cde80d} 24 | v4.5 25 | 12.0 26 | Debug 27 | x64 28 | NtCreateLowboxToken 29 | 30 | 31 | 32 | Windows10 33 | true 34 | WindowsKernelModeDriver10.0 35 | Driver 36 | WDM 37 | 38 | 39 | Windows10 40 | false 41 | WindowsKernelModeDriver10.0 42 | Driver 43 | WDM 44 | false 45 | 46 | 47 | Windows10 48 | true 49 | WindowsKernelModeDriver10.0 50 | Driver 51 | WDM 52 | 53 | 54 | Windows10 55 | false 56 | WindowsKernelModeDriver10.0 57 | Driver 58 | WDM 59 | 60 | 61 | 62 | 63 | 64 | 65 | 66 | 67 | 68 | 69 | DbgengKernelDebugger 70 | 71 | 72 | DbgengKernelDebugger 73 | 74 | 75 | DbgengKernelDebugger 76 | 77 | 78 | DbgengKernelDebugger 79 | 80 | 81 | 82 | sha256 83 | 84 | 85 | 86 | 87 | sha256 88 | 89 | 90 | false 91 | true 92 | OnlyExplicitInline 93 | 94 | 95 | 96 | 97 | 98 | 99 | 100 | 101 | 102 | 103 | 104 | 105 | 106 | 107 | -------------------------------------------------------------------------------- /tests/CLTTest.vcxproj: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | Debug 6 | Win32 7 | 8 | 9 | Release 10 | Win32 11 | 12 | 13 | Debug 14 | x64 15 | 16 | 17 | Release 18 | x64 19 | 20 | 21 | 22 | 17.0 23 | Win32Proj 24 | {dfd28bd9-9745-4a89-8784-d9b632f4b524} 25 | CLTTest 26 | 10.0 27 | 28 | 29 | 30 | Application 31 | true 32 | v143 33 | Unicode 34 | 35 | 36 | Application 37 | false 38 | v143 39 | true 40 | Unicode 41 | 42 | 43 | Application 44 | true 45 | v143 46 | Unicode 47 | 48 | 49 | Application 50 | false 51 | v143 52 | true 53 | Unicode 54 | 55 | 56 | 57 | 58 | 59 | 60 | 61 | 62 | 63 | 64 | 65 | 66 | 67 | 68 | 69 | 70 | 71 | 72 | 73 | 74 | 75 | Level3 76 | true 77 | WIN32;_DEBUG;_CONSOLE;%(PreprocessorDefinitions) 78 | true 79 | 80 | 81 | Console 82 | true 83 | 84 | 85 | 86 | 87 | Level3 88 | true 89 | true 90 | true 91 | WIN32;NDEBUG;_CONSOLE;%(PreprocessorDefinitions) 92 | true 93 | 94 | 95 | Console 96 | true 97 | true 98 | true 99 | 100 | 101 | 102 | 103 | Level3 104 | true 105 | _DEBUG;_CONSOLE;%(PreprocessorDefinitions) 106 | true 107 | 108 | 109 | Console 110 | true 111 | 112 | 113 | 114 | 115 | Level3 116 | true 117 | true 118 | true 119 | NDEBUG;_CONSOLE;%(PreprocessorDefinitions) 120 | true 121 | 122 | 123 | Console 124 | true 125 | true 126 | true 127 | 128 | 129 | 130 | 131 | 132 | 133 | 134 | 135 | -------------------------------------------------------------------------------- /tests/CLTTest.cpp: -------------------------------------------------------------------------------- 1 | #include "windows.h" 2 | #include 3 | #pragma comment(lib, "shlwapi.lib") 4 | HANDLE hKernel; 5 | WCHAR KernelDev[] = L"\\\\.\\NtCreateLowboxToken"; 6 | WCHAR DriverName[] = L"NtCreateLowboxToken"; 7 | #include "winioctl.h" 8 | BOOL LoadKernelDriver() 9 | { 10 | WCHAR CurrentPath[MAX_PATH] = { 0 }; 11 | WCHAR driverPath[MAX_PATH] = L"\\??\\"; 12 | SC_HANDLE hSCManager = NULL; 13 | SC_HANDLE hService = NULL; 14 | BOOL success = FALSE; 15 | 16 | __try { 17 | 18 | hKernel = CreateFile(KernelDev, FILE_READ_ATTRIBUTES, FILE_SHARE_READ | FILE_SHARE_WRITE, 0, OPEN_EXISTING, 0, 0); 19 | 20 | if (hKernel != INVALID_HANDLE_VALUE) 21 | { 22 | success = TRUE; 23 | __leave; 24 | } 25 | 26 | // Get Windows directory and create full driver path 27 | if (!GetCurrentDirectoryW(MAX_PATH , (LPWSTR)CurrentPath)) { 28 | __leave; 29 | } 30 | 31 | PathAppend(driverPath, CurrentPath); 32 | 33 | 34 | PathAppend(driverPath, L"\\NtCreateLowboxToken.sys"); 35 | 36 | // Open SCM 37 | hSCManager = OpenSCManager(NULL, NULL, SC_MANAGER_ALL_ACCESS); 38 | if (!hSCManager) { 39 | __leave; 40 | } 41 | 42 | // Check if service exists 43 | hService = OpenService(hSCManager, DriverName, SERVICE_ALL_ACCESS); 44 | if (hService) { 45 | 46 | StartService(hService, 0, 0); 47 | 48 | 49 | hKernel = CreateFile(KernelDev, FILE_READ_ATTRIBUTES, FILE_SHARE_READ | FILE_SHARE_WRITE, 0, OPEN_EXISTING, 0, 0); 50 | 51 | if (hKernel != INVALID_HANDLE_VALUE) 52 | { 53 | success = TRUE; 54 | } 55 | __leave; 56 | 57 | } 58 | 59 | // Create service 60 | hService = CreateService( 61 | hSCManager, 62 | DriverName, 63 | DriverName, 64 | SERVICE_ALL_ACCESS, 65 | SERVICE_KERNEL_DRIVER, 66 | SERVICE_DEMAND_START, 67 | SERVICE_ERROR_NORMAL, 68 | driverPath, 69 | NULL, 70 | NULL, 71 | NULL, 72 | NULL, 73 | NULL 74 | ); 75 | 76 | if (!hService) { 77 | __leave; 78 | } 79 | 80 | // Start service 81 | if (!StartService(hService, 0, NULL)) { 82 | DWORD error = GetLastError(); 83 | if (error != ERROR_SERVICE_ALREADY_RUNNING) { 84 | __leave; 85 | } 86 | } 87 | 88 | hKernel = CreateFile(KernelDev, FILE_READ_ATTRIBUTES, FILE_SHARE_READ | FILE_SHARE_WRITE, 0, OPEN_EXISTING, 0, 0); 89 | 90 | if (hKernel != INVALID_HANDLE_VALUE) 91 | { 92 | success = TRUE; 93 | } 94 | } 95 | __finally { 96 | // Cleanup 97 | if (hService) { 98 | CloseServiceHandle(hService); 99 | } 100 | if (hSCManager) { 101 | CloseServiceHandle(hSCManager); 102 | } 103 | 104 | 105 | } 106 | 107 | 108 | 109 | return success; 110 | 111 | } 112 | 113 | #include "stdio.h" 114 | 115 | #include 116 | #include 117 | 118 | #pragma comment(lib, "dbghelp.lib") 119 | #pragma comment(lib, "psapi.lib") 120 | 121 | typedef NTSTATUS(WINAPI* NtQuerySystemInformation_t)( 122 | ULONG SystemInformationClass, 123 | PVOID SystemInformation, 124 | ULONG SystemInformationLength, 125 | PULONG ReturnLength 126 | ); 127 | typedef struct _SYSTEM_MODULE_ENTRY { 128 | HANDLE Section; 129 | PVOID MappedBase; 130 | PVOID ImageBase; 131 | ULONG ImageSize; 132 | ULONG Flags; 133 | USHORT LoadOrderIndex; 134 | USHORT InitOrderIndex; 135 | USHORT LoadCount; 136 | USHORT OffsetToFileName; 137 | UCHAR FullPathName[256]; 138 | } SYSTEM_MODULE_ENTRY, * PSYSTEM_MODULE_ENTRY; 139 | 140 | typedef struct _SYSTEM_MODULE_INFORMATION { 141 | ULONG Count; 142 | SYSTEM_MODULE_ENTRY Module[1]; 143 | } SYSTEM_MODULE_INFORMATION, * PSYSTEM_MODULE_INFORMATION; 144 | 145 | #define SystemModuleInformation 11 146 | PVOID GetKernelBase() { 147 | HMODULE ntdll = GetModuleHandleA("ntdll.dll"); 148 | if (!ntdll) return NULL; 149 | 150 | NtQuerySystemInformation_t NtQuerySystemInformation = 151 | (NtQuerySystemInformation_t)GetProcAddress(ntdll, "NtQuerySystemInformation"); 152 | if (!NtQuerySystemInformation) return NULL; 153 | 154 | ULONG size = 0; 155 | NtQuerySystemInformation(SystemModuleInformation, NULL, 0, &size); 156 | 157 | PSYSTEM_MODULE_INFORMATION moduleInfo = (PSYSTEM_MODULE_INFORMATION)malloc(size); 158 | if (!moduleInfo) return NULL; 159 | 160 | if (NtQuerySystemInformation(SystemModuleInformation, moduleInfo, size, &size) != 0) { 161 | free(moduleInfo); 162 | return NULL; 163 | } 164 | PVOID kernelBase = moduleInfo->Module[0].ImageBase; 165 | free(moduleInfo); 166 | 167 | return kernelBase; 168 | } 169 | 170 | 171 | 172 | BOOL GetKernelSymbolAddress(const char* symbolPath, const char* symbolName, DWORD64* address) { 173 | HANDLE process = GetCurrentProcess(); 174 | DWORD64 baseAddr; 175 | char ntos[MAX_PATH]; 176 | 177 | GetSystemDirectoryA(ntos, sizeof(ntos)); 178 | strcat_s(ntos, sizeof(ntos), "\\ntoskrnl.exe"); 179 | 180 | if (!SymInitialize(process, symbolPath, FALSE)) { 181 | printf("SymInitialize failed: %d\n", GetLastError()); 182 | return FALSE; 183 | } 184 | baseAddr = SymLoadModule64( 185 | process, 186 | NULL, 187 | ntos, 188 | NULL, 189 | 0, 190 | 0 191 | ); 192 | 193 | if (!baseAddr) { 194 | printf("SymLoadModule64 failed: %d\n", GetLastError()); 195 | SymCleanup(process); 196 | return FALSE; 197 | } 198 | 199 | SYMBOL_INFO* symbolInfo; 200 | symbolInfo = (SYMBOL_INFO*)malloc(sizeof(SYMBOL_INFO) + MAX_SYM_NAME); 201 | memset(symbolInfo, 0, sizeof(SYMBOL_INFO) + MAX_SYM_NAME); 202 | symbolInfo->SizeOfStruct = sizeof(SYMBOL_INFO); 203 | symbolInfo->MaxNameLen = MAX_SYM_NAME; 204 | 205 | if (!SymFromName(process, symbolName, symbolInfo)) { 206 | printf("SymFromName failed: %s %d\n",symbolName, GetLastError()); 207 | free(symbolInfo); 208 | SymCleanup(process); 209 | return FALSE; 210 | } 211 | 212 | *address = symbolInfo->Address - baseAddr; 213 | 214 | free(symbolInfo); 215 | SymCleanup(process); 216 | return TRUE; 217 | } 218 | #include 219 | 220 | #define IOCTL_NTCREATELOWBOXTOKEN CTL_CODE(FILE_DEVICE_UNKNOWN , 0x100 , METHOD_BUFFERED , FILE_ANY_ACCESS) 221 | #define IOCTL_GET_SYSTEM_SYMBOLS CTL_CODE(FILE_DEVICE_UNKNOWN , 0x101 , METHOD_BUFFERED , FILE_ANY_ACCESS) 222 | 223 | typedef struct _LOWBOXTOKEN_PARAMS { 224 | PHANDLE TokenHandle; // _Out_ 225 | HANDLE ExistingTokenHandle; // _In_ 226 | ACCESS_MASK DesiredAccess; // _In_ 227 | POBJECT_ATTRIBUTES ObjectAttributes; // _In_ 228 | PSID PackageSid; // _In_ 229 | ULONG CapabilityCount; // _In_ 230 | PSID_AND_ATTRIBUTES Capabilities; // _In_ 231 | ULONG HandleCount; // _In_ 232 | HANDLE* Handles; // _In_ 233 | } LOWBOXTOKEN_PARAMS, * PLOWBOXTOKEN_PARAMS; 234 | const char* symbols[] = { 235 | "LowboxSessionMapLock", 236 | "g_SessionLowboxArray", 237 | "g_SessionLowboxMap", 238 | "SepLearningModeTokenCount", 239 | "g_SepSidMapping", 240 | "SepTokenCapabilitySidSharingEnabled", 241 | "SepDuplicateToken" 242 | }; 243 | 244 | PVOID KernelSymbols[sizeof(symbols) / sizeof(char*)]; 245 | 246 | typedef struct SYSTEM_SYMBOLS_PARAMS { 247 | PVOID LowboxSessionMapLock; 248 | PVOID g_SessionLowboxArray; 249 | PVOID g_SessionLowboxMap; 250 | PVOID SepLearningModeTokenCount; 251 | PVOID g_SepSidMapping; 252 | PVOID SepTokenCapabilitySidSharingEnabled; 253 | PVOID SepDuplicateToken; 254 | }SYSTEM_SYMBOLS_PARAMS, * PSYSTEM_SYMBOLS_PARAMS; 255 | 256 | BYTE g_original_bytes[16]; 257 | PVOID g_original_func; 258 | #pragma comment(lib, "ntdll.lib") 259 | NTSTATUS 260 | NTSYSAPI 261 | RtlGetLastNtStatus( 262 | VOID 263 | ); 264 | typedef NTSTATUS(*PNT_CREATE_LOWBOX_TOKEN)( 265 | _Out_ PHANDLE TokenHandle, 266 | _In_ HANDLE ExistingTokenHandle, 267 | _In_ ACCESS_MASK DesiredAccess, 268 | _In_ POBJECT_ATTRIBUTES ObjectAttributes, 269 | _In_ PSID PackageSid, 270 | _In_ ULONG CapabilityCount, 271 | _In_ PSID_AND_ATTRIBUTES Capabilities, 272 | _In_ ULONG HandleCount, 273 | _In_ HANDLE* Handles); 274 | 275 | PNT_CREATE_LOWBOX_TOKEN NtCreateLowboxToken; 276 | 277 | NTSTATUS NTAPI MyNtCreateLowboxToken( 278 | _Out_ PHANDLE TokenHandle, 279 | _In_ HANDLE ExistingTokenHandle, 280 | _In_ ACCESS_MASK DesiredAccess, 281 | _In_ POBJECT_ATTRIBUTES ObjectAttributes, 282 | _In_ PSID PackageSid, 283 | _In_ ULONG CapabilityCount, 284 | _In_ PSID_AND_ATTRIBUTES Capabilities, 285 | _In_ ULONG HandleCount, 286 | _In_ HANDLE* Handles) 287 | { 288 | LOWBOXTOKEN_PARAMS lowbox; 289 | 290 | lowbox.TokenHandle = TokenHandle; 291 | lowbox.ExistingTokenHandle = ExistingTokenHandle; 292 | lowbox.DesiredAccess = DesiredAccess; 293 | lowbox.ObjectAttributes = ObjectAttributes; 294 | lowbox.PackageSid = PackageSid; 295 | lowbox.CapabilityCount = CapabilityCount; 296 | lowbox.Capabilities = Capabilities; 297 | lowbox.HandleCount = HandleCount; 298 | lowbox.Handles = Handles; 299 | 300 | DWORD btr; 301 | 302 | if (DeviceIoControl(hKernel, IOCTL_NTCREATELOWBOXTOKEN, &lowbox, sizeof(lowbox), NULL, 0, &btr, NULL) == FALSE) 303 | { 304 | printf("error %08x\n", *(NTSTATUS*)((ULONG_PTR)NtCurrentTeb() + 0x1250)); 305 | return *(NTSTATUS*)((ULONG_PTR)NtCurrentTeb() + 0x1250); //teb->lastntstatusvalue 306 | } 307 | else 308 | { 309 | return 0; 310 | } 311 | } 312 | 313 | BOOL InstallHook() 314 | { 315 | BYTE jump[] = { 316 | 0x48, 0xB8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // mov rax, addr 317 | 0xFF, 0xE0 // jmp rax 318 | }; 319 | 320 | HMODULE hNtdll = GetModuleHandleA("ntdll.dll"); 321 | if (!hNtdll) return FALSE; 322 | 323 | g_original_func = GetProcAddress(hNtdll, "NtCreateLowBoxToken"); 324 | if (!g_original_func) 325 | { 326 | printf("no ntclt \n"); 327 | return FALSE; 328 | } 329 | 330 | memcpy(g_original_bytes, g_original_func, 16); 331 | 332 | PVOID pBuf = VirtualAlloc(NULL, 0x20, MEM_COMMIT, PAGE_EXECUTE_READWRITE); 333 | 334 | memcpy(pBuf, g_original_func, 0x20); 335 | 336 | NtCreateLowboxToken = (PNT_CREATE_LOWBOX_TOKEN)pBuf; 337 | 338 | *(UINT64*)(jump + 2) = (UINT64)MyNtCreateLowboxToken; 339 | 340 | DWORD oldProtect; 341 | if (!VirtualProtect(g_original_func, 16, PAGE_EXECUTE_READWRITE, &oldProtect)) 342 | { 343 | printf("vp failed %u\n ", GetLastError()); 344 | 345 | } 346 | 347 | 348 | memcpy(g_original_func, jump, sizeof(jump)); 349 | 350 | 351 | VirtualProtect(g_original_func, 16, PAGE_EXECUTE_READ, &oldProtect); 352 | 353 | return TRUE; 354 | } 355 | #include 356 | #include 357 | #include 358 | #include 359 | 360 | #pragma comment(lib, "Userenv.lib") 361 | 362 | //List of allowed capabilities for the application 363 | extern WELL_KNOWN_SID_TYPE app_capabilities[] = 364 | { 365 | WinCapabilityPrivateNetworkClientServerSid, 366 | }; 367 | 368 | WCHAR container_name[] = L"MtSandboxTest"; 369 | WCHAR container_desc[] = L"MalwareTech Sandbox Test"; 370 | 371 | 372 | BOOL IsInAppContainer(); 373 | BOOL SetSecurityCapabilities(PSID container_sid, SECURITY_CAPABILITIES* capabilities, PDWORD num_capabilities); 374 | BOOL GrantNamedObjectAccess(PSID appcontainer_sid, CHAR* object_name, SE_OBJECT_TYPE object_type, DWORD access_mask); 375 | 376 | BOOL RunExecutableInContainer(CHAR* executable_path) 377 | { 378 | PSID sid = NULL; 379 | HRESULT result; 380 | SECURITY_CAPABILITIES SecurityCapabilities = { 0 }; 381 | DWORD num_capabilities = 0; 382 | SIZE_T attribute_size = 0; 383 | STARTUPINFOEXA startup_info = { 0 }; 384 | PROCESS_INFORMATION process_info = { 0 }; 385 | CHAR desktop_file[MAX_PATH]; 386 | HANDLE file_handle = INVALID_HANDLE_VALUE; 387 | CHAR* string_sid = NULL; 388 | BOOL success = FALSE; 389 | 390 | do //Not a loop 391 | { 392 | result = CreateAppContainerProfile(container_name, container_name, container_desc, NULL, 0, &sid); 393 | if (!SUCCEEDED(result)) 394 | { 395 | if (HRESULT_CODE(result) == ERROR_ALREADY_EXISTS) 396 | { 397 | result = DeriveAppContainerSidFromAppContainerName(container_name, &sid); 398 | if (!SUCCEEDED(result)) 399 | { 400 | printf("Failed to get existing AppContainer name, error code: %d", HRESULT_CODE(result)); 401 | break; 402 | } 403 | } 404 | else { 405 | printf("Failed to create AppContainer, last error: %d\n", HRESULT_CODE(result)); 406 | break; 407 | } 408 | } 409 | 410 | printf("[Container Info]\nname: %ws\ndescription: %ws\n", container_name, container_desc); 411 | 412 | if (ConvertSidToStringSidA(sid, &string_sid)) 413 | printf("Sid: %s\n\n", string_sid); 414 | 415 | if (!SetSecurityCapabilities(sid, &SecurityCapabilities, &num_capabilities)) 416 | { 417 | printf("Failed to set security capabilities, last error: %d\n", GetLastError()); 418 | break; 419 | } 420 | 421 | ExpandEnvironmentStringsA("%userprofile%\\desktop\\allowed_test.txt", desktop_file, MAX_PATH - 1); 422 | 423 | file_handle = CreateFileA(desktop_file, GENERIC_ALL, NULL, NULL, OPEN_ALWAYS, NULL, NULL); 424 | if (file_handle == INVALID_HANDLE_VALUE) 425 | { 426 | printf("Failed to create file %s, last error: %d\n", desktop_file, GetLastError()); 427 | break; 428 | } 429 | 430 | if (!GrantNamedObjectAccess(sid, desktop_file, SE_FILE_OBJECT, FILE_ALL_ACCESS)) 431 | { 432 | printf("Failed to grant explicit access to %s\n", desktop_file); 433 | break; 434 | } 435 | 436 | InitializeProcThreadAttributeList(NULL, 1, NULL, &attribute_size); 437 | startup_info.lpAttributeList = (LPPROC_THREAD_ATTRIBUTE_LIST)malloc(attribute_size); 438 | 439 | if (!InitializeProcThreadAttributeList(startup_info.lpAttributeList, 1, NULL, &attribute_size)) 440 | { 441 | printf("InitializeProcThreadAttributeList() failed, last error: %d", GetLastError()); 442 | break; 443 | } 444 | 445 | if (!UpdateProcThreadAttribute(startup_info.lpAttributeList, 0, PROC_THREAD_ATTRIBUTE_SECURITY_CAPABILITIES, 446 | &SecurityCapabilities, sizeof(SecurityCapabilities), NULL, NULL)) 447 | { 448 | printf("UpdateProcThreadAttribute() failed, last error: %d", GetLastError()); 449 | break; 450 | } 451 | 452 | if (!CreateProcessA(executable_path, NULL, NULL, NULL, FALSE, EXTENDED_STARTUPINFO_PRESENT, NULL, NULL, 453 | (LPSTARTUPINFOA)&startup_info, &process_info)) 454 | { 455 | printf("Failed to create process %s, last error: %d\n", executable_path, GetLastError()); 456 | break; 457 | } 458 | 459 | printf("Successfully executed %s in AppContainer\n", executable_path); 460 | success = TRUE; 461 | 462 | } while (FALSE); 463 | 464 | if (startup_info.lpAttributeList) 465 | DeleteProcThreadAttributeList(startup_info.lpAttributeList); 466 | 467 | if (SecurityCapabilities.Capabilities) 468 | free(SecurityCapabilities.Capabilities); 469 | 470 | if (sid) 471 | FreeSid(sid); 472 | 473 | if (string_sid) 474 | LocalFree(string_sid); 475 | 476 | if (file_handle != INVALID_HANDLE_VALUE) 477 | CloseHandle(file_handle); 478 | 479 | if (file_handle != INVALID_HANDLE_VALUE && !success) 480 | DeleteFileA(desktop_file); 481 | 482 | return success; 483 | } 484 | BOOL SetSecurityCapabilities(PSID container_sid, SECURITY_CAPABILITIES* capabilities, PDWORD num_capabilities) 485 | { 486 | DWORD sid_size = SECURITY_MAX_SID_SIZE; 487 | DWORD num_capabilities_ = sizeof(app_capabilities) / sizeof(DWORD); 488 | SID_AND_ATTRIBUTES* attributes; 489 | BOOL success = TRUE; 490 | 491 | attributes = (SID_AND_ATTRIBUTES*)malloc(sizeof(SID_AND_ATTRIBUTES) * num_capabilities_); 492 | 493 | ZeroMemory(capabilities, sizeof(SECURITY_CAPABILITIES)); 494 | ZeroMemory(attributes, sizeof(SID_AND_ATTRIBUTES) * num_capabilities_); 495 | 496 | for (unsigned int i = 0; i < num_capabilities_; i++) 497 | { 498 | attributes[i].Sid = malloc(SECURITY_MAX_SID_SIZE); 499 | if (!CreateWellKnownSid(app_capabilities[i], NULL, attributes[i].Sid, &sid_size)) 500 | { 501 | success = FALSE; 502 | break; 503 | } 504 | attributes[i].Attributes = SE_GROUP_ENABLED; 505 | } 506 | 507 | if (success == FALSE) 508 | { 509 | for (unsigned int i = 0; i < num_capabilities_; i++) 510 | { 511 | if (attributes[i].Sid) 512 | LocalFree(attributes[i].Sid); 513 | } 514 | 515 | free(attributes); 516 | attributes = NULL; 517 | num_capabilities_ = 0; 518 | } 519 | 520 | capabilities->Capabilities = attributes; 521 | capabilities->CapabilityCount = num_capabilities_; 522 | capabilities->AppContainerSid = container_sid; 523 | *num_capabilities = num_capabilities_; 524 | 525 | return success; 526 | } 527 | 528 | /* 529 | Explicitly grants the container access to a named object (file, section, etc) 530 | */ 531 | BOOL GrantNamedObjectAccess(PSID appcontainer_sid, CHAR* object_name, SE_OBJECT_TYPE object_type, DWORD access_mask) 532 | { 533 | EXPLICIT_ACCESS_A explicit_access; 534 | PACL original_acl = NULL, new_acl = NULL; 535 | DWORD status; 536 | BOOL success = FALSE; 537 | 538 | do 539 | { 540 | explicit_access.grfAccessMode = GRANT_ACCESS; 541 | explicit_access.grfAccessPermissions = access_mask; 542 | explicit_access.grfInheritance = OBJECT_INHERIT_ACE | CONTAINER_INHERIT_ACE; 543 | 544 | explicit_access.Trustee.MultipleTrusteeOperation = NO_MULTIPLE_TRUSTEE; 545 | explicit_access.Trustee.pMultipleTrustee = NULL; 546 | explicit_access.Trustee.ptstrName = (CHAR*)appcontainer_sid; 547 | explicit_access.Trustee.TrusteeForm = TRUSTEE_IS_SID; 548 | explicit_access.Trustee.TrusteeType = TRUSTEE_IS_WELL_KNOWN_GROUP; 549 | 550 | status = GetNamedSecurityInfoA(object_name, object_type, DACL_SECURITY_INFORMATION, NULL, NULL, &original_acl, 551 | NULL, NULL); 552 | if (status != ERROR_SUCCESS) 553 | { 554 | printf("GetNamedSecurityInfoA() failed for %s, error: %d\n", object_name, status); 555 | break; 556 | } 557 | 558 | status = SetEntriesInAclA(1, &explicit_access, original_acl, &new_acl); 559 | if (status != ERROR_SUCCESS) 560 | { 561 | printf("SetEntriesInAclA() failed for %s, error: %d\n", object_name, status); 562 | break; 563 | } 564 | 565 | status = SetNamedSecurityInfoA(object_name, object_type, DACL_SECURITY_INFORMATION, NULL, NULL, new_acl, NULL); 566 | if (status != ERROR_SUCCESS) 567 | { 568 | printf("SetNamedSecurityInfoA() failed for %s, error: %d\n", object_name, status); 569 | break; 570 | } 571 | 572 | success = TRUE; 573 | 574 | } while (FALSE); 575 | 576 | /* if (original_acl) 577 | LocalFree(original_acl); 578 | 579 | if (new_acl) 580 | LocalFree(new_acl);*/ 581 | 582 | return success; 583 | } 584 | BOOL LoadSymbol() 585 | { 586 | //replace with your symbol path 587 | //you'd better have the latest dbghelp.dll placed with this exe 588 | 589 | const char* symPath = "c:\\Symbols"; 590 | DWORD64 address; 591 | PVOID kernelbase = GetKernelBase(); 592 | LOWBOXTOKEN_PARAMS tp; 593 | 594 | 595 | printf("Kernel Base: %p\n", kernelbase); 596 | 597 | 598 | 599 | for (int i = 0; i < sizeof(symbols) / sizeof(symbols[0]); i++) { 600 | address = 0; 601 | GetKernelSymbolAddress(symPath, symbols[i], &address); 602 | 603 | if (address == 0) 604 | { 605 | KernelSymbols[i] = 0; 606 | 607 | if (strcmp(symbols[i], "SepLearningModeTokenCount") == 0) 608 | { 609 | printf("SepLearningModeTokenCount not found , allowed\n"); 610 | } 611 | else 612 | { 613 | printf("failed to get kernel symbol\n"); 614 | return FALSE; 615 | } 616 | } 617 | else 618 | { 619 | *(ULONG_PTR*)((ULONG_PTR)&tp + sizeof(ULONG_PTR) * i ) = (ULONG_PTR)(address + (ULONG_PTR)kernelbase); 620 | } 621 | printf("%s Kernel Address: %p\n", symbols[i], *(ULONG_PTR*)((ULONG_PTR)&tp + sizeof(ULONG_PTR) * i)); 622 | } 623 | 624 | DWORD btr; 625 | 626 | if (DeviceIoControl(hKernel, IOCTL_GET_SYSTEM_SYMBOLS, &tp, sizeof(tp), NULL, 0, &btr, NULL) == FALSE) 627 | { 628 | printf("load system symbol failed %u\n", GetLastError()); 629 | return FALSE; 630 | } 631 | 632 | return TRUE; 633 | 634 | } 635 | int main() 636 | { 637 | if (LoadKernelDriver() == FALSE) 638 | { 639 | printf("load driver failed %u\n", GetLastError()); 640 | return 0; 641 | } 642 | 643 | if (LoadSymbol() == FALSE) 644 | { 645 | return 0; 646 | } 647 | 648 | if (InstallHook() == FALSE) 649 | { 650 | return 0; 651 | } 652 | 653 | 654 | 655 | 656 | CHAR Name[] = "c:\\windows\\system32\\notepad.exe"; 657 | 658 | RunExecutableInContainer(Name); 659 | 660 | 661 | 662 | } 663 | -------------------------------------------------------------------------------- /driver/LowboxToken.h: -------------------------------------------------------------------------------- 1 | #pragma once 2 | #include "ntddk.h" 3 | #include 4 | 5 | UNICODE_STRING DeviceName = RTL_CONSTANT_STRING(L"\\Device\\NtCreateLowboxToken"); 6 | UNICODE_STRING DosDeviceName = RTL_CONSTANT_STRING(L"\\DosDevices\\NtCreateLowboxToken"); 7 | 8 | #define IOCTL_NTCREATELOWBOXTOKEN CTL_CODE(FILE_DEVICE_UNKNOWN , 0x100 , METHOD_BUFFERED , FILE_ANY_ACCESS) 9 | #define IOCTL_GET_SYSTEM_SYMBOLS CTL_CODE(FILE_DEVICE_UNKNOWN , 0x101 , METHOD_BUFFERED , FILE_ANY_ACCESS) 10 | 11 | typedef struct _LOWBOXTOKEN_PARAMS { 12 | PHANDLE TokenHandle; // _Out_ 13 | HANDLE ExistingTokenHandle; // _In_ 14 | ACCESS_MASK DesiredAccess; // _In_ 15 | POBJECT_ATTRIBUTES ObjectAttributes; // _In_ 16 | PSID PackageSid; // _In_ 17 | ULONG CapabilityCount; // _In_ 18 | PSID_AND_ATTRIBUTES Capabilities; // _In_ 19 | ULONG HandleCount; // _In_ 20 | HANDLE* Handles; // _In_ 21 | } LOWBOXTOKEN_PARAMS, * PLOWBOXTOKEN_PARAMS; 22 | 23 | typedef NTSTATUS(*PSEP_DUPLICATE_TOKEN)( 24 | PVOID ExistingToken, 25 | POBJECT_ATTRIBUTES ObjectAttributes, 26 | BOOLEAN EffectiveOnly, 27 | TOKEN_TYPE TokenType, 28 | SECURITY_IMPERSONATION_LEVEL ImpersonationLevel, 29 | KPROCESSOR_MODE RequestorMode, 30 | BOOLEAN SkipNonInheritableSecurityAttributes, 31 | PVOID* DuplicateToken 32 | ); 33 | 34 | typedef struct SYSTEM_SYMBOLS_PARAMS { 35 | PVOID LowboxSessionMapLock; 36 | PVOID g_SessionLowboxArray; 37 | PVOID g_SessionLowboxMap; 38 | PVOID SepLearningModeTokenCount; 39 | PVOID g_SepSidMapping; 40 | PVOID SepTokenCapabilitySidSharingEnabled; 41 | PSEP_DUPLICATE_TOKEN SepDuplicateToken; 42 | }SYSTEM_SYMBOLS_PARAMS , *PSYSTEM_SYMBOLS_PARAMS; 43 | 44 | 45 | FORCEINLINE 46 | VOID 47 | ProbeForWriteHandle( PHANDLE Address) 48 | 49 | { 50 | if (Address >= (HANDLE* const)MM_USER_PROBE_ADDRESS) { 51 | Address = (HANDLE* const)MM_USER_PROBE_ADDRESS; 52 | } 53 | 54 | *((volatile HANDLE*)Address) = *Address; 55 | return; 56 | } 57 | 58 | 59 | FORCEINLINE 60 | UCHAR 61 | ProbeAndReadUchar(UCHAR* Address) 62 | 63 | { 64 | if (Address >= (UCHAR* const)MM_USER_PROBE_ADDRESS) { 65 | Address = (UCHAR* const)MM_USER_PROBE_ADDRESS; 66 | } 67 | 68 | _ReadWriteBarrier(); 69 | return *((volatile UCHAR*)Address); 70 | } 71 | 72 | 73 | 74 | #define SepAcquireTokenReadLock(T) KeEnterCriticalRegion(); \ 75 | ExAcquireResourceSharedLite((T)->TokenLock, TRUE) 76 | 77 | #define SepAcquireTokenWriteLock(T) KeEnterCriticalRegion(); \ 78 | ExAcquireResourceExclusiveLite((T)->TokenLock, TRUE); \ 79 | KeMemoryBarrier(); 80 | 81 | #define SepReleaseTokenReadLock(T) ExReleaseResourceLite((T)->TokenLock); \ 82 | KeLeaveCriticalRegion() 83 | 84 | #define SepReleaseTokenWriteLock(T,M) \ 85 | { \ 86 | if ((M)) { \ 87 | ZwAllocateLocallyUniqueId( &((PTOKEN)(T))->ModifiedId ); \ 88 | } \ 89 | KeMemoryBarrier(); \ 90 | SepReleaseTokenReadLock( T ); \ 91 | } 92 | 93 | // 94 | // Currently define Flags for "OBJECT" ACE types. 95 | // 96 | 97 | #define ACE_OBJECT_TYPE_PRESENT 0x1 98 | #define ACE_INHERITED_OBJECT_TYPE_PRESENT 0x2 99 | 100 | #define IsAllowedAceType(Ace) ( \ 101 | (((PACE_HEADER)(Ace))->AceType == ACCESS_ALLOWED_ACE_TYPE || \ 102 | ((PACE_HEADER)(Ace))->AceType == ACCESS_DENIED_ACE_TYPE || \ 103 | ((PACE_HEADER)(Ace))->AceType == SYSTEM_AUDIT_ACE_TYPE || \ 104 | ((PACE_HEADER)(Ace))->AceType == SYSTEM_ALARM_ACE_TYPE || \ 105 | ((PACE_HEADER)(Ace))->AceType == ACCESS_ALLOWED_CALLBACK_ACE_TYPE || \ 106 | ((PACE_HEADER)(Ace))->AceType == ACCESS_DENIED_CALLBACK_ACE_TYPE || \ 107 | ((PACE_HEADER)(Ace))->AceType == SYSTEM_AUDIT_CALLBACK_ACE_TYPE || \ 108 | ((PACE_HEADER)(Ace))->AceType == SYSTEM_ALARM_CALLBACK_ACE_TYPE || \ 109 | ((PACE_HEADER)(Ace))->AceType == SYSTEM_MANDATORY_LABEL_ACE_TYPE || \ 110 | ((PACE_HEADER)(Ace))->AceType == SYSTEM_RESOURCE_ATTRIBUTE_ACE_TYPE || \ 111 | ((PACE_HEADER)(Ace))->AceType == SYSTEM_SCOPED_POLICY_ID_ACE_TYPE || \ 112 | ((PACE_HEADER)(Ace))->AceType == SYSTEM_PROCESS_TRUST_LABEL_ACE_TYPE || \ 113 | ((PACE_HEADER)(Ace))->AceType == SYSTEM_ACCESS_FILTER_ACE_TYPE) \ 114 | ) 115 | 116 | #define IsCompoundAceType(Ace) ( \ 117 | (((PACE_HEADER)(Ace))->AceType == ACCESS_ALLOWED_COMPOUND_ACE_TYPE)) 118 | 119 | #define IsObjectAceType(Ace) ( \ 120 | (((PACE_HEADER)(Ace))->AceType >= ACCESS_MIN_MS_OBJECT_ACE_TYPE) && \ 121 | (((PACE_HEADER)(Ace))->AceType <= ACCESS_MAX_MS_OBJECT_ACE_TYPE) \ 122 | ) 123 | 124 | #define IsCallbackObjectAceType(Ace) ( \ 125 | (((PACE_HEADER)(Ace))->AceType >= ACCESS_ALLOWED_CALLBACK_OBJECT_ACE_TYPE) && \ 126 | (((PACE_HEADER)(Ace))->AceType <= ACCESS_DENIED_CALLBACK_OBJECT_ACE_TYPE) \ 127 | ) 128 | 129 | #define IsSytstemCallbackObjectAceType(Ace) ( \ 130 | (((PACE_HEADER)(Ace))->AceType >= SYSTEM_AUDIT_CALLBACK_OBJECT_ACE_TYPE) && \ 131 | (((PACE_HEADER)(Ace))->AceType <= SYSTEM_ALARM_CALLBACK_OBJECT_ACE_TYPE) \ 132 | ) 133 | #define RtlObjectAceObjectTypePresent( Ace ) \ 134 | ((((PKNOWN_OBJECT_ACE)(Ace))->Flags & ACE_OBJECT_TYPE_PRESENT) != 0 ) 135 | #define RtlObjectAceInheritedObjectTypePresent( Ace ) \ 136 | ((((PKNOWN_OBJECT_ACE)(Ace))->Flags & ACE_INHERITED_OBJECT_TYPE_PRESENT) != 0 ) 137 | 138 | #define RtlObjectAceSid( Ace ) \ 139 | ((PSID)(((PUCHAR)&(((PKNOWN_OBJECT_ACE)(Ace))->SidStart)) + \ 140 | (RtlObjectAceObjectTypePresent(Ace) ? sizeof(GUID) : 0 ) + \ 141 | (RtlObjectAceInheritedObjectTypePresent(Ace) ? sizeof(GUID) : 0 ))) 142 | 143 | 144 | #define FirstAce(Acl) ((PVOID)((PUCHAR)(Acl) + sizeof(ACL))) 145 | #define NextAce(Ace) ((PVOID)((PUCHAR)(Ace) + ((PACE_HEADER)(Ace))->AceSize)) 146 | 147 | #define SID_HASH_ULONG(s) ((((PISID)s)->SubAuthority[((PISID)s)->SubAuthorityCount - 1])) 148 | #define AUTHZ_SID_HASH_BYTE(s) ((UCHAR)(((PISID)s)->SubAuthority[((PISID)s)->SubAuthorityCount - 1])) 149 | #define AUTHZ_SID_HASH_HIGH 16 150 | #define AUTHZ_SID_HASH_LOOKUP(table, byte) (((table)[(byte) & 0xf]) & ((table)[AUTHZ_SID_HASH_HIGH + (((byte) & 0xf0) >> 4)])) 151 | #define AUTHZI_SID_HASH_ENTRY_NUM_BITS (8*sizeof(SID_HASH_ENTRY)) 152 | 153 | #define RtlLengthRequiredSidCount(Count) (8 + (4 * Count)) 154 | 155 | #define LongAlignSize(Size) (((ULONG)(Size) + 3) & -4) 156 | 157 | const UCHAR SidHashByteToIndexLookupTable[] = { 158 | 0x09, 0x00, 0x01, 0x00, 0x02, 0x00, 0x01, 0x00, 0x03, 0x00, 0x01, 0x00, 0x02, 0x00, 0x01, 0x00, 159 | 0x04, 0x00, 0x01, 0x00, 0x02, 0x00, 0x01, 0x00, 0x03, 0x00, 0x01, 0x00, 0x02, 0x00, 0x01, 0x00, 160 | 0x05, 0x00, 0x01, 0x00, 0x02, 0x00, 0x01, 0x00, 0x03, 0x00, 0x01, 0x00, 0x02, 0x00, 0x01, 0x00, 161 | 0x04, 0x00, 0x01, 0x00, 0x02, 0x00, 0x01, 0x00, 0x03, 0x00, 0x01, 0x00, 0x02, 0x00, 0x01, 0x00, 162 | 0x06, 0x00, 0x01, 0x00, 0x02, 0x00, 0x01, 0x00, 0x03, 0x00, 0x01, 0x00, 0x02, 0x00, 0x01, 0x00, 163 | 0x04, 0x00, 0x01, 0x00, 0x02, 0x00, 0x01, 0x00, 0x03, 0x00, 0x01, 0x00, 0x02, 0x00, 0x01, 0x00, 164 | 0x05, 0x00, 0x01, 0x00, 0x02, 0x00, 0x01, 0x00, 0x03, 0x00, 0x01, 0x00, 0x02, 0x00, 0x01, 0x00, 165 | 0x04, 0x00, 0x01, 0x00, 0x02, 0x00, 0x01, 0x00, 0x03, 0x00, 0x01, 0x00, 0x02, 0x00, 0x01, 0x00, 166 | 0x07, 0x00, 0x01, 0x00, 0x02, 0x00, 0x01, 0x00, 0x03, 0x00, 0x01, 0x00, 0x02, 0x00, 0x01, 0x00, 167 | 0x04, 0x00, 0x01, 0x00, 0x02, 0x00, 0x01, 0x00, 0x03, 0x00, 0x01, 0x00, 0x02, 0x00, 0x01, 0x00, 168 | 0x05, 0x00, 0x01, 0x00, 0x02, 0x00, 0x01, 0x00, 0x03, 0x00, 0x01, 0x00, 0x02, 0x00, 0x01, 0x00, 169 | 0x04, 0x00, 0x01, 0x00, 0x02, 0x00, 0x01, 0x00, 0x03, 0x00, 0x01, 0x00, 0x02, 0x00, 0x01, 0x00, 170 | 0x06, 0x00, 0x01, 0x00, 0x02, 0x00, 0x01, 0x00, 0x03, 0x00, 0x01, 0x00, 0x02, 0x00, 0x01, 0x00, 171 | 0x04, 0x00, 0x01, 0x00, 0x02, 0x00, 0x01, 0x00, 0x03, 0x00, 0x01, 0x00, 0x02, 0x00, 0x01, 0x00, 172 | 0x05, 0x00, 0x01, 0x00, 0x02, 0x00, 0x01, 0x00, 0x03, 0x00, 0x01, 0x00, 0x02, 0x00, 0x01, 0x00, 173 | 0x04, 0x00, 0x01, 0x00, 0x02, 0x00, 0x01, 0x00, 0x03, 0x00, 0x01, 0x00, 0x02, 0x00, 0x01, 0x00 174 | }; 175 | 176 | 177 | 178 | #define RtlpSaclAddrSecurityDescriptor( SD ) \ 179 | ( (!((SD)->Control & SE_SACL_PRESENT) ) ? \ 180 | (PACL)NULL : \ 181 | ( ((SD)->Control & SE_SELF_RELATIVE) ? \ 182 | ( (((SECURITY_DESCRIPTOR_RELATIVE *) (SD))->Sacl == 0) ? ((PACL) NULL) : \ 183 | (PACL)RtlOffsetToPointer((SD), ((SECURITY_DESCRIPTOR_RELATIVE *) (SD))->Sacl) \ 184 | ) : \ 185 | (PACL)((SD)->Sacl) \ 186 | ) \ 187 | ) 188 | 189 | 190 | #define RtlpDaclAddrSecurityDescriptor( SD ) \ 191 | ( (!((SD)->Control & SE_DACL_PRESENT) ) ? \ 192 | (PACL)NULL : \ 193 | ( ((SD)->Control & SE_SELF_RELATIVE) ? \ 194 | ( (((SECURITY_DESCRIPTOR_RELATIVE *) (SD))->Dacl == 0) ? ((PACL) NULL) : \ 195 | (PACL)RtlOffsetToPointer((SD), ((SECURITY_DESCRIPTOR_RELATIVE *) (SD))->Dacl) \ 196 | ) : \ 197 | (PACL)((SD)->Dacl) \ 198 | ) \ 199 | ) 200 | 201 | #define ValidAclRevision(Acl) ((Acl)->AclRevision >= MIN_ACL_REVISION && \ 202 | (Acl)->AclRevision <= MAX_ACL_REVISION ) 203 | 204 | // 205 | // Macro to copy the state of the passed bits from the old security 206 | // descriptor (OldSD) into the Control field of the new one (NewSD) 207 | // 208 | 209 | #define RtlpPropagateControlBits( NewSD, OldSD, Bits ) \ 210 | ( NewSD )->Control |= \ 211 | ( \ 212 | ( OldSD )->Control & ( Bits ) \ 213 | ) 214 | 215 | #define SEP_MAX_GROUP_COUNT 4096 216 | 217 | 218 | #define SEP_SID_AND_ATTRIBUTES_TAG 'aSeS' 219 | #define SEP_SECURITY_DESCRIPTOR_TAG 'dSeS' 220 | #define SEP_TOKEN_DYNAMIC_PART_TAG 'dTeS' 221 | #define SEP_SID_TAG 'iSeS' 222 | #define SEP_OBJECT_NAME_INFORMATION_TAG 'nOeS' 223 | #define SEP_SECURITY_ATTRIBUTES_TAG 'tAeS' 224 | #define SEP_SID_SHARING_TAG 'sSeS' 225 | #define SEP_LOWBOX_SESSION_TAG 'sLeS' 226 | #define RTL_PRIVATE_BUFFER_TAG 'bPtR' 227 | #define SEP_HANDLES_CAPTURE_TAG 'cHeS' 228 | #define SEP_ACL_TAG 'cAeS' 229 | 230 | typedef enum _APPCONTAINER_SID_TYPE 231 | { 232 | NotAppContainerSidType, 233 | ChildAppContainerSidType, 234 | ParentAppContainerSidType, 235 | InvalidAppContainerSidType, 236 | MaxAppContainerSidType 237 | } APPCONTAINER_SID_TYPE, * PAPPCONTAINER_SID_TYPE; 238 | 239 | typedef struct _SEP_TOKEN_PRIVILEGES { 240 | ULONGLONG Present; 241 | ULONGLONG Enabled; 242 | ULONGLONG EnabledByDefault; 243 | } SEP_TOKEN_PRIVILEGES, * PSEP_TOKEN_PRIVILEGES; 244 | 245 | typedef struct _SEP_AUDIT_POLICY { 246 | TOKEN_AUDIT_POLICY AdtTokenPolicy; 247 | UCHAR PolicySetStatus; 248 | } SEP_AUDIT_POLICY, * PSEP_AUDIT_POLICY; 249 | 250 | typedef struct _OB_HANDLE_REVOCATION_BLOCK { 251 | LIST_ENTRY RevocationInfos; 252 | EX_PUSH_LOCK Lock; 253 | EX_RUNDOWN_REF Rundown; 254 | } OB_HANDLE_REVOCATION_BLOCK, * POB_HANDLE_REVOCATION_BLOCK; 255 | 256 | typedef struct _SEP_CACHED_HANDLES_TABLE { 257 | EX_PUSH_LOCK Lock; // +0x000 258 | PRTL_DYNAMIC_HASH_TABLE HashTable; // +0x008 259 | } SEP_CACHED_HANDLES_TABLE, * PSEP_CACHED_HANDLES_TABLE; 260 | 261 | typedef struct _SEP_LOGON_SESSION_REFERENCES { 262 | struct _SEP_LOGON_SESSION_REFERENCES* Next; 263 | LUID LogonId; 264 | LUID BuddyLogonId; 265 | LONGLONG ReferenceCount; 266 | ULONG Flags; 267 | PVOID pDeviceMap; 268 | PVOID Token; 269 | UNICODE_STRING AccountName; 270 | UNICODE_STRING AuthorityName; 271 | SEP_CACHED_HANDLES_TABLE CachedHandlesTable; 272 | EX_PUSH_LOCK SharedDataLock; 273 | PVOID SharedClaimAttributes; 274 | PVOID SharedSidValues; 275 | OB_HANDLE_REVOCATION_BLOCK RevocationBlock; 276 | PVOID ServerSilo; 277 | LUID SiblingAuthId; 278 | LIST_ENTRY TokenList; 279 | } SEP_LOGON_SESSION_REFERENCES, * PSEP_LOGON_SESSION_REFERENCES; 280 | 281 | typedef struct _TOKEN { 282 | TOKEN_SOURCE TokenSource; // 0x000 283 | LUID TokenId; // 0x010 284 | LUID AuthenticationId; // 0x018 285 | LUID ParentTokenId; // 0x020 286 | LARGE_INTEGER ExpirationTime; // 0x028 287 | PVOID TokenLock; // 0x030 288 | LUID ModifiedId; // 0x038 289 | SEP_TOKEN_PRIVILEGES Privileges; // 0x040 290 | SEP_AUDIT_POLICY AuditPolicy; // 0x058 291 | ULONG SessionId; // 0x078 292 | ULONG UserAndGroupCount; // 0x07c 293 | ULONG RestrictedSidCount; // 0x080 294 | ULONG VariableLength; // 0x084 295 | ULONG DynamicCharged; // 0x088 296 | ULONG DynamicAvailable; // 0x08c 297 | ULONG DefaultOwnerIndex; // 0x090 298 | PSID_AND_ATTRIBUTES UserAndGroups; // 0x098 299 | PSID_AND_ATTRIBUTES RestrictedSids; // 0x0a0 300 | PSID PrimaryGroup; // 0x0a8 301 | PVOID DynamicPart; // 0x0b0 302 | PACL DefaultDacl; // 0x0b8 303 | TOKEN_TYPE TokenType; // 0x0c0 304 | SECURITY_IMPERSONATION_LEVEL ImpersonationLevel; // 0x0c4 305 | ULONG TokenFlags; // 0x0c8 306 | UCHAR TokenInUse; // 0x0cc 307 | ULONG IntegrityLevelIndex; // 0x0d0 308 | ULONG MandatoryPolicy; // 0x0d4 309 | PSEP_LOGON_SESSION_REFERENCES LogonSession; // 0x0d8 310 | LUID OriginatingLogonSession; // 0x0e0 311 | SID_AND_ATTRIBUTES_HASH SidHash; // 0x0e8 312 | SID_AND_ATTRIBUTES_HASH RestrictedSidHash; // 0x1f8 313 | PVOID pSecurityAttributes; // 0x308 314 | PSID Package; // 0x310 315 | PSID_AND_ATTRIBUTES Capabilities; // 0x318 316 | ULONG CapabilityCount; // 0x320 317 | SID_AND_ATTRIBUTES_HASH CapabilitiesHash; // 0x328 318 | PVOID LowboxNumberEntry; // 0x438 319 | PVOID LowboxHandlesEntry; // 0x440 320 | PVOID pClaimAttributes; // 0x448 321 | PSID TrustLevelSid; // 0x450 322 | PVOID TrustLinkedToken; // 0x458 323 | PSID IntegrityLevelSidValue; // 0x460 324 | PVOID TokenSidValues; // 0x468 325 | PVOID IndexEntry; // 0x470 326 | PVOID DiagnosticInfo; // 0x478 327 | PVOID BnoIsolationHandlesEntry; // 0x480 328 | PVOID SessionObject; // 0x488 329 | ULONGLONG VariablePart; // 0x490 330 | } TOKEN, * PTOKEN; 331 | 332 | // 333 | // Group attributes 334 | // 335 | 336 | #define SE_GROUP_MANDATORY (0x00000001L) 337 | #define SE_GROUP_ENABLED_BY_DEFAULT (0x00000002L) 338 | #define SE_GROUP_ENABLED (0x00000004L) 339 | #define SE_GROUP_OWNER (0x00000008L) 340 | #define SE_GROUP_USE_FOR_DENY_ONLY (0x00000010L) 341 | #define SE_GROUP_INTEGRITY (0x00000020L) 342 | #define SE_GROUP_INTEGRITY_ENABLED (0x00000040L) 343 | #define SE_GROUP_LOGON_ID (0xC0000000L) 344 | #define SE_GROUP_RESOURCE (0x20000000L) 345 | 346 | #define SE_GROUP_VALID_ATTRIBUTES (SE_GROUP_MANDATORY | \ 347 | SE_GROUP_ENABLED_BY_DEFAULT | \ 348 | SE_GROUP_ENABLED | \ 349 | SE_GROUP_OWNER | \ 350 | SE_GROUP_USE_FOR_DENY_ONLY | \ 351 | SE_GROUP_LOGON_ID | \ 352 | SE_GROUP_RESOURCE | \ 353 | SE_GROUP_INTEGRITY | \ 354 | SE_GROUP_INTEGRITY_ENABLED) 355 | 356 | #define SE_MIN_WELL_KNOWN_PRIVILEGE (2L) 357 | #define SE_CREATE_TOKEN_PRIVILEGE (2L) 358 | #define SE_ASSIGNPRIMARYTOKEN_PRIVILEGE (3L) 359 | #define SE_LOCK_MEMORY_PRIVILEGE (4L) 360 | #define SE_INCREASE_QUOTA_PRIVILEGE (5L) 361 | #define SE_UNSOLICITED_INPUT_PRIVILEGE (6L) 362 | #define SE_MACHINE_ACCOUNT_PRIVILEGE (6L) 363 | #define SE_TCB_PRIVILEGE (7L) 364 | #define SE_SECURITY_PRIVILEGE (8L) 365 | #define SE_TAKE_OWNERSHIP_PRIVILEGE (9L) 366 | #define SE_LOAD_DRIVER_PRIVILEGE (10L) 367 | #define SE_SYSTEM_PROFILE_PRIVILEGE (11L) 368 | #define SE_SYSTEMTIME_PRIVILEGE (12L) 369 | #define SE_PROF_SINGLE_PROCESS_PRIVILEGE (13L) 370 | #define SE_INC_BASE_PRIORITY_PRIVILEGE (14L) 371 | #define SE_CREATE_PAGEFILE_PRIVILEGE (15L) 372 | #define SE_CREATE_PERMANENT_PRIVILEGE (16L) 373 | #define SE_BACKUP_PRIVILEGE (17L) 374 | #define SE_RESTORE_PRIVILEGE (18L) 375 | #define SE_SHUTDOWN_PRIVILEGE (19L) 376 | #define SE_DEBUG_PRIVILEGE (20L) 377 | #define SE_AUDIT_PRIVILEGE (21L) 378 | #define SE_SYSTEM_ENVIRONMENT_PRIVILEGE (22L) 379 | #define SE_CHANGE_NOTIFY_PRIVILEGE (23L) 380 | #define SE_REMOTE_SHUTDOWN_PRIVILEGE (24L) 381 | #define SE_UNDOCK_PRIVILEGE (25L) 382 | #define SE_SYNC_AGENT_PRIVILEGE (26L) 383 | #define SE_ENABLE_DELEGATION_PRIVILEGE (27L) 384 | #define SE_MANAGE_VOLUME_PRIVILEGE (28L) 385 | #define SE_IMPERSONATE_PRIVILEGE (29L) 386 | #define SE_CREATE_GLOBAL_PRIVILEGE (30L) 387 | #define SE_TRUSTED_CREDMAN_ACCESS_PRIVILEGE (31L) 388 | #define SE_RELABEL_PRIVILEGE (32L) 389 | #define SE_INC_WORKING_SET_PRIVILEGE (33L) 390 | #define SE_TIME_ZONE_PRIVILEGE (34L) 391 | #define SE_CREATE_SYMBOLIC_LINK_PRIVILEGE (35L) 392 | 393 | // 394 | // Structure representing the mapping for lowbox numbers in the Windows kernel. 395 | // 396 | typedef struct _SEP_LOWBOX_NUMBER_MAPPING { 397 | EX_PUSH_LOCK Lock; // +0x000: Synchronization primitive for accessing the structure. 398 | RTL_BITMAP Bitmap; // +0x008: Bitmap used to track allocated or available lowbox numbers. 399 | PRTL_DYNAMIC_HASH_TABLE HashTable; // +0x018: Pointer to a dynamic hash table storing lowbox-related data. 400 | UCHAR Active; // +0x020: Indicates whether the mapping is active (non-zero) or inactive (zero). 401 | } SEP_LOWBOX_NUMBER_MAPPING, * PSEP_LOWBOX_NUMBER_MAPPING; 402 | 403 | // 404 | // Structure representing an entry in the lowbox number mapping. 405 | // 406 | typedef struct _SEP_LOWBOX_NUMBER_ENTRY { 407 | RTL_DYNAMIC_HASH_TABLE_ENTRY HashEntry; // +0x000: Hash table entry for storing this structure in a dynamic hash table. 408 | LONG64 ReferenceCount; // +0x018: Reference count for this entry. 409 | PVOID PackageSid; // +0x020: Pointer to the SID (Security Identifier) associated with the lowbox. 410 | ULONG LowboxNumber; // +0x028: The lowbox number assigned to this entry. 411 | PVOID AtomTable; // +0x030: Pointer to an atom table for storing additional metadata. 412 | } SEP_LOWBOX_NUMBER_ENTRY, * PSEP_LOWBOX_NUMBER_ENTRY; 413 | 414 | // 415 | // Structure representing a session lowbox map. 416 | // 417 | typedef struct _SESSION_LOWBOX_MAP { 418 | LIST_ENTRY ListEntry; // +0x000: Doubly-linked list entry for linking this structure in a list. 419 | UINT32 SessionId; // +0x010: The session ID associated with this lowbox map. 420 | UINT32 Padding; // +0x014: Padding to align the next member to an 8-byte boundary. 421 | SEP_LOWBOX_NUMBER_MAPPING LowboxMap; // +0x018: The lowbox number mapping for this session. 422 | } SESSION_LOWBOX_MAP, * PSESSION_LOWBOX_MAP; 423 | 424 | 425 | 426 | typedef enum _SEP_CACHED_HANDLES_ENTRY_TYPE { 427 | SepCachedHandlesEntryLowbox = 0, 428 | SepCachedHandlesEntryBnoIsolation = 1 429 | } SEP_CACHED_HANDLES_ENTRY_TYPE, * PSEP_CACHED_HANDLES_ENTRY_TYPE; 430 | 431 | typedef struct _SEP_CACHED_HANDLES_ENTRY_DESCRIPTOR { 432 | SEP_CACHED_HANDLES_ENTRY_TYPE DescriptorType; // +0x000 433 | union { 434 | PSID PackageSid; // +0x008 435 | UNICODE_STRING IsolationPrefix; // +0x008 436 | }u1; 437 | } SEP_CACHED_HANDLES_ENTRY_DESCRIPTOR, * PSEP_CACHED_HANDLES_ENTRY_DESCRIPTOR; 438 | 439 | typedef struct _SEP_CACHED_HANDLES_ENTRY { 440 | RTL_DYNAMIC_HASH_TABLE_ENTRY HashEntry; // +0x000 441 | LONG64 ReferenceCount; // +0x018 442 | SEP_CACHED_HANDLES_ENTRY_DESCRIPTOR EntryDescriptor; // +0x020 443 | ULONG HandleCount; // +0x038 444 | PVOID** Handles; // +0x040 445 | } SEP_CACHED_HANDLES_ENTRY, * PSEP_CACHED_HANDLES_ENTRY; 446 | 447 | //wrk-v1.2 448 | typedef struct _KNOWN_COMPOUND_ACE { 449 | ACE_HEADER Header; 450 | ACCESS_MASK Mask; 451 | USHORT CompoundAceType; 452 | USHORT Reserved; 453 | ULONG SidStart; 454 | } KNOWN_COMPOUND_ACE, * PKNOWN_COMPOUND_ACE; 455 | 456 | typedef struct _KNOWN_OBJECT_ACE { 457 | ACE_HEADER Header; 458 | ACCESS_MASK Mask; 459 | ULONG Flags; 460 | // GUID ObjectType; // Optionally present 461 | // GUID InheritedObjectType; // Optionally present 462 | ULONG SidStart; 463 | } KNOWN_OBJECT_ACE, * PKNOWN_OBJECT_ACE; 464 | 465 | typedef enum _ACL_INFORMATION_CLASS { 466 | AclRevisionInformation = 1, 467 | AclSizeInformation 468 | } ACL_INFORMATION_CLASS; 469 | 470 | typedef struct _ACL_REVISION_INFORMATION { 471 | ULONG AclRevision; 472 | } ACL_REVISION_INFORMATION; 473 | typedef ACL_REVISION_INFORMATION* PACL_REVISION_INFORMATION; 474 | 475 | typedef struct _ACL_SIZE_INFORMATION { 476 | ULONG AceCount; 477 | ULONG AclBytesInUse; 478 | ULONG AclBytesFree; 479 | } ACL_SIZE_INFORMATION; 480 | typedef ACL_SIZE_INFORMATION* PACL_SIZE_INFORMATION; 481 | 482 | #define MAX_OBJECT_PATH 256 483 | 484 | typedef struct _ALLOWED_CACHED_DIRECTORY { 485 | UNICODE_STRING DirectoryName; 486 | BOOLEAN bCheckName; 487 | }ALLOWED_CACHED_DIRECTORY, *PALLOWED_CACHED_DIRECTORY; 488 | 489 | typedef struct _OBJECT_HEADER_NAME_INFO { 490 | PVOID Directory; //POBJECT_DIRECTORY 491 | UNICODE_STRING Name; 492 | LONG ReferenceCount; 493 | ULONG Reserved; 494 | } OBJECT_HEADER_NAME_INFO, * POBJECT_HEADER_NAME_INFO; 495 | 496 | typedef struct _OBJECT_HEADER { 497 | // +0x000 PointerCount 498 | volatile LONG_PTR PointerCount; 499 | 500 | // +0x008 HandleCount / NextToFree (union) 501 | union { 502 | volatile LONG_PTR HandleCount; 503 | struct _OBJECT_HEADER* NextToFree; // Void pointer 504 | }; 505 | 506 | // +0x010 Lock 507 | EX_PUSH_LOCK Lock; 508 | 509 | // +0x018 TypeIndex 510 | UCHAR TypeIndex; 511 | 512 | // +0x019 TraceFlags / DbgRefTrace / DbgTracePermanent (bitfields) 513 | union { 514 | UCHAR TraceFlags; 515 | struct { 516 | UCHAR DbgRefTrace : 1; 517 | UCHAR DbgTracePermanent : 1; 518 | }; 519 | }; 520 | 521 | // +0x01A InfoMask 522 | UCHAR InfoMask; 523 | 524 | // +0x01B Flags / bitfields 525 | union { 526 | UCHAR Flags; 527 | struct { 528 | UCHAR NewObject : 1; 529 | UCHAR KernelObject : 1; 530 | UCHAR KernelOnlyAccess : 1; 531 | UCHAR ExclusiveObject : 1; 532 | UCHAR PermanentObject : 1; 533 | UCHAR DefaultSecurityQuota : 1; 534 | UCHAR SingleHandleEntry : 1; 535 | UCHAR DeletedInline : 1; 536 | }; 537 | }; 538 | 539 | // +0x01C Reserved 540 | ULONG Reserved; 541 | 542 | // +0x020 ObjectCreateInfo / QuotaBlockCharged (union) 543 | union { 544 | struct _OBJECT_CREATE_INFORMATION* ObjectCreateInfo; 545 | VOID* QuotaBlockCharged; 546 | }; 547 | 548 | // +0x028 SecurityDescriptor 549 | VOID* SecurityDescriptor; 550 | 551 | // +0x030 Body 552 | QUAD Body; 553 | 554 | } OBJECT_HEADER, * POBJECT_HEADER; 555 | 556 | typedef struct _KNOWN_ACE { 557 | ACE_HEADER Header; 558 | ACCESS_MASK Mask; 559 | ULONG SidStart; 560 | } KNOWN_ACE, * PKNOWN_ACE; 561 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | GNU GENERAL PUBLIC LICENSE 2 | Version 3, 29 June 2007 3 | 4 | Copyright (C) 2007 Free Software Foundation, Inc. 5 | Everyone is permitted to copy and distribute verbatim copies 6 | of this license document, but changing it is not allowed. 7 | 8 | Preamble 9 | 10 | The GNU General Public License is a free, copyleft license for 11 | software and other kinds of works. 12 | 13 | The licenses for most software and other practical works are designed 14 | to take away your freedom to share and change the works. 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Use with the GNU Affero General Public License. 553 | 554 | Notwithstanding any other provision of this License, you have 555 | permission to link or combine any covered work with a work licensed 556 | under version 3 of the GNU Affero General Public License into a single 557 | combined work, and to convey the resulting work. The terms of this 558 | License will continue to apply to the part which is the covered work, 559 | but the special requirements of the GNU Affero General Public License, 560 | section 13, concerning interaction through a network will apply to the 561 | combination as such. 562 | 563 | 14. Revised Versions of this License. 564 | 565 | The Free Software Foundation may publish revised and/or new versions of 566 | the GNU General Public License from time to time. Such new versions will 567 | be similar in spirit to the present version, but may differ in detail to 568 | address new problems or concerns. 569 | 570 | Each version is given a distinguishing version number. If the 571 | Program specifies that a certain numbered version of the GNU General 572 | Public License "or any later version" applies to it, you have the 573 | option of following the terms and conditions either of that numbered 574 | version or of any later version published by the Free Software 575 | Foundation. If the Program does not specify a version number of the 576 | GNU General Public License, you may choose any version ever published 577 | by the Free Software Foundation. 578 | 579 | If the Program specifies that a proxy can decide which future 580 | versions of the GNU General Public License can be used, that proxy's 581 | public statement of acceptance of a version permanently authorizes you 582 | to choose that version for the Program. 583 | 584 | Later license versions may give you additional or different 585 | permissions. However, no additional obligations are imposed on any 586 | author or copyright holder as a result of your choosing to follow a 587 | later version. 588 | 589 | 15. Disclaimer of Warranty. 590 | 591 | THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY 592 | APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT 593 | HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY 594 | OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, 595 | THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 596 | PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM 597 | IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF 598 | ALL NECESSARY SERVICING, REPAIR OR CORRECTION. 599 | 600 | 16. Limitation of Liability. 601 | 602 | IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING 603 | WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS 604 | THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY 605 | GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE 606 | USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF 607 | DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD 608 | PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), 609 | EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF 610 | SUCH DAMAGES. 611 | 612 | 17. Interpretation of Sections 15 and 16. 613 | 614 | If the disclaimer of warranty and limitation of liability provided 615 | above cannot be given local legal effect according to their terms, 616 | reviewing courts shall apply local law that most closely approximates 617 | an absolute waiver of all civil liability in connection with the 618 | Program, unless a warranty or assumption of liability accompanies a 619 | copy of the Program in return for a fee. 620 | 621 | END OF TERMS AND CONDITIONS 622 | 623 | How to Apply These Terms to Your New Programs 624 | 625 | If you develop a new program, and you want it to be of the greatest 626 | possible use to the public, the best way to achieve this is to make it 627 | free software which everyone can redistribute and change under these terms. 628 | 629 | To do so, attach the following notices to the program. It is safest 630 | to attach them to the start of each source file to most effectively 631 | state the exclusion of warranty; and each file should have at least 632 | the "copyright" line and a pointer to where the full notice is found. 633 | 634 | 635 | Copyright (C) 636 | 637 | This program is free software: you can redistribute it and/or modify 638 | it under the terms of the GNU General Public License as published by 639 | the Free Software Foundation, either version 3 of the License, or 640 | (at your option) any later version. 641 | 642 | This program is distributed in the hope that it will be useful, 643 | but WITHOUT ANY WARRANTY; without even the implied warranty of 644 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 645 | GNU General Public License for more details. 646 | 647 | You should have received a copy of the GNU General Public License 648 | along with this program. If not, see . 649 | 650 | Also add information on how to contact you by electronic and paper mail. 651 | 652 | If the program does terminal interaction, make it output a short 653 | notice like this when it starts in an interactive mode: 654 | 655 | Copyright (C) 656 | This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. 657 | This is free software, and you are welcome to redistribute it 658 | under certain conditions; type `show c' for details. 659 | 660 | The hypothetical commands `show w' and `show c' should show the appropriate 661 | parts of the General Public License. Of course, your program's commands 662 | might be different; for a GUI interface, you would use an "about box". 663 | 664 | You should also get your employer (if you work as a programmer) or school, 665 | if any, to sign a "copyright disclaimer" for the program, if necessary. 666 | For more information on this, and how to apply and follow the GNU GPL, see 667 | . 668 | 669 | The GNU General Public License does not permit incorporating your program 670 | into proprietary programs. If your program is a subroutine library, you 671 | may consider it more useful to permit linking proprietary applications with 672 | the library. If this is what you want to do, use the GNU Lesser General 673 | Public License instead of this License. But first, please read 674 | . 675 | -------------------------------------------------------------------------------- /driver/LowboxToken.c: -------------------------------------------------------------------------------- 1 | //MJ0011@CyberKunlun 2024.12 2 | 3 | #include 4 | #include 5 | #include 6 | 7 | #include "LowboxToken.h" 8 | #pragma comment(lib, "ntoskrnl.lib") 9 | 10 | SYSTEM_SYMBOLS_PARAMS KernelSymbols; 11 | BOOLEAN bSystemSymbolInitialized = FALSE; 12 | 13 | PSID SeAppSiloSid = NULL; 14 | PSID SeAliasAdminsSid = NULL; 15 | PSID SePrincipalSelfSid = NULL; 16 | PSID SeOwnerRightsSid = NULL; 17 | PSID SeLearningModeLoggingCapabilitySid = NULL; 18 | PSID SePermissiveLearningModeCapabilitySid = NULL; 19 | 20 | PSID SeLpacAppExperienceCapabilitySid = NULL; 21 | PSID SeLpacComCapabilitySid = NULL; 22 | PSID SeLpacCryptoServicesCapabilitySid = NULL; 23 | PSID SeLpacIdentityServicesCapabilitySid = NULL; 24 | PSID SeLpacInstrumentationCapabilitySid = NULL; 25 | PSID SeLpacEnterprisePolicyChangeNotificationsCapabilitySid = NULL; 26 | PSID SeLpacMediaCapabilitySid = NULL; 27 | PSID SeLpacPnpNotificationsCapabilitySid = NULL; 28 | PSID SeRegistryReadCapabilitySid = NULL; 29 | PSID SeLpacServicesManagementCapabilitySid = NULL; 30 | PSID SeLpacSessionManagementCapabilitySid = NULL; 31 | PSID SeLpacPrintingCapabilitySid = NULL; 32 | PSID SeLpacWebPlatformCapabilitySid = NULL; 33 | PSID SeLpacPaymentsCapabilitySid = NULL; 34 | PSID SeLpacClipboardCapabilitySid = NULL; 35 | PSID SeLpacImeCapabilitySid = NULL; 36 | PSID SeLpacPackageManagerOperationCapabilitySid = NULL; 37 | PSID SeLpacDeviceAccessCapabilitySid = NULL; 38 | 39 | const PSID* SeLpacCapabilitySids[] = { 40 | &SeLpacAppExperienceCapabilitySid, 41 | &SeLpacComCapabilitySid, 42 | &SeLpacCryptoServicesCapabilitySid, 43 | &SeLpacIdentityServicesCapabilitySid, 44 | &SeLpacInstrumentationCapabilitySid, 45 | &SeLpacEnterprisePolicyChangeNotificationsCapabilitySid, 46 | &SeLpacMediaCapabilitySid, 47 | &SeLpacPnpNotificationsCapabilitySid, 48 | &SeRegistryReadCapabilitySid, 49 | &SeLpacServicesManagementCapabilitySid, 50 | &SeLpacSessionManagementCapabilitySid, 51 | &SeLpacPrintingCapabilitySid, 52 | &SeLpacWebPlatformCapabilitySid, 53 | &SeLpacPaymentsCapabilitySid, 54 | &SeLpacClipboardCapabilitySid, 55 | &SeLpacImeCapabilitySid, 56 | &SeLpacPackageManagerOperationCapabilitySid, 57 | &SeLpacDeviceAccessCapabilitySid 58 | }; 59 | 60 | #define SE_LPAC_CAPABILITY_COUNT (sizeof(SeLpacCapabilitySids) / sizeof(PSID*)) 61 | 62 | NTSTATUS NTSYSAPI RtlSidHashInitialize( 63 | PSID_AND_ATTRIBUTES SidAttr, 64 | ULONG SidCount, 65 | PSID_AND_ATTRIBUTES_HASH SidAttrHash 66 | ); 67 | NTSTATUS NTSYSAPI RtlQueryInformationAcl( 68 | IN PACL Acl, 69 | OUT PVOID AclInformation, 70 | IN ULONG AclInformationLength, 71 | IN ACL_INFORMATION_CLASS AclInformationClass 72 | ); 73 | ULONG NTSYSAPI RtlGetCurrentServiceSessionId(); 74 | 75 | POBJECT_TYPE NTSYSAPI ObGetObjectType(PVOID Object); 76 | 77 | POBJECT_HEADER_NAME_INFO NTSYSAPI ObQueryNameInfo(PVOID Object); 78 | 79 | PSID_AND_ATTRIBUTES 80 | NTSYSAPI 81 | RtlSidHashLookup( 82 | _In_ PSID_AND_ATTRIBUTES_HASH SidAttrHash, 83 | _In_ PSID Sid); 84 | 85 | 86 | POBJECT_TYPE ObpSymbolicLinkObjectType; 87 | POBJECT_TYPE ObpDirectoryObjectType; 88 | 89 | 90 | NTSTATUS SeCaptureSid( 91 | __in PSID InputSid, 92 | __in KPROCESSOR_MODE RequestorMode, 93 | __inout_bcount_opt(CaptureBufferLength) PVOID CaptureBuffer, 94 | __in ULONG CaptureBufferLength, 95 | __in POOL_TYPE PoolType, 96 | __in BOOLEAN ForceCapture, 97 | __deref_out PSID* CapturedSid 98 | ) 99 | 100 | { 101 | 102 | ULONG GetSidSubAuthorityCount; 103 | ULONG SidSize; 104 | 105 | UNREFERENCED_PARAMETER(CaptureBuffer); 106 | UNREFERENCED_PARAMETER(CaptureBufferLength); 107 | UNREFERENCED_PARAMETER(PoolType); 108 | 109 | if ((RequestorMode == KernelMode) && (ForceCapture == FALSE)) 110 | { 111 | (*CapturedSid) = InputSid; 112 | 113 | return STATUS_SUCCESS; 114 | } 115 | 116 | if (RequestorMode != KernelMode) 117 | { 118 | 119 | try 120 | { 121 | GetSidSubAuthorityCount = ProbeAndReadUchar(&(((SID*)(InputSid))->SubAuthorityCount)); 122 | 123 | SidSize = RtlLengthRequiredSid(GetSidSubAuthorityCount); 124 | 125 | ProbeForRead(InputSid, SidSize, sizeof(ULONG)); 126 | 127 | } 128 | except(EXCEPTION_EXECUTE_HANDLER) 129 | { 130 | return GetExceptionCode(); 131 | } 132 | 133 | } 134 | else 135 | { 136 | 137 | GetSidSubAuthorityCount = ((SID*)(InputSid))->SubAuthorityCount; 138 | SidSize = RtlLengthRequiredSid(GetSidSubAuthorityCount); 139 | } 140 | 141 | *CapturedSid = (PSID)ExAllocatePoolWithTag((POOL_TYPE)(PagedPool | POOL_ZERO_ALLOCATION) , SidSize, SEP_SID_TAG); 142 | 143 | if (*CapturedSid == NULL) 144 | { 145 | return STATUS_INSUFFICIENT_RESOURCES; 146 | } 147 | 148 | try 149 | { 150 | RtlCopyMemory((*CapturedSid), InputSid, SidSize); 151 | ((SID*)(*CapturedSid))->SubAuthorityCount = (UCHAR)GetSidSubAuthorityCount; 152 | 153 | } 154 | except(EXCEPTION_EXECUTE_HANDLER) 155 | { 156 | ExFreePool(*CapturedSid); 157 | *CapturedSid = NULL; 158 | 159 | return GetExceptionCode(); 160 | } 161 | 162 | if ((!RtlValidSid((*CapturedSid)))) 163 | { 164 | ExFreePool((*CapturedSid)); 165 | *CapturedSid = NULL; 166 | 167 | return STATUS_INVALID_SID; 168 | } 169 | 170 | return STATUS_SUCCESS; 171 | 172 | } 173 | 174 | SID_IDENTIFIER_AUTHORITY RtlpAppPackageAuthority = { 0 , 0 , 0 , 0 , 0 , 0xF }; 175 | 176 | //Determines the type of AppContainer SID. 177 | 178 | /*Parameters 179 | AppContainerSid - the SID to classify. 180 | AppContainerSidType - a pointer to a variable that receives the appcontainer SID type. 181 | */ 182 | 183 | NTSTATUS NTAPI RtlGetAppContainerSidType( 184 | _In_ PISID AppContainerSid, 185 | _Out_ PAPPCONTAINER_SID_TYPE AppContainerSidType 186 | ) 187 | { 188 | UCHAR SubAuthorityCount; 189 | 190 | if (AppContainerSid->SubAuthorityCount >= SECURITY_BUILTIN_APP_PACKAGE_RID_COUNT && 191 | AppContainerSid->Revision == SID_REVISION && 192 | RtlCompareMemory(&AppContainerSid->IdentifierAuthority, &RtlpAppPackageAuthority, sizeof(SID_IDENTIFIER_AUTHORITY)) == sizeof(SID_IDENTIFIER_AUTHORITY) && 193 | AppContainerSid->SubAuthority[0] == SECURITY_APP_PACKAGE_BASE_RID) 194 | { 195 | SubAuthorityCount = *RtlSubAuthorityCountSid(AppContainerSid); 196 | if (SubAuthorityCount == SECURITY_APP_PACKAGE_RID_COUNT) 197 | { 198 | *AppContainerSidType = ParentAppContainerSidType; 199 | return STATUS_SUCCESS; 200 | } 201 | if (SubAuthorityCount == SECURITY_CHILD_PACKAGE_RID_COUNT) 202 | { 203 | *AppContainerSidType = ChildAppContainerSidType; 204 | return STATUS_SUCCESS; 205 | } 206 | *AppContainerSidType = InvalidAppContainerSidType; 207 | } 208 | else 209 | { 210 | *AppContainerSidType = NotAppContainerSidType; 211 | } 212 | return STATUS_NOT_APPCONTAINER; 213 | } 214 | 215 | //Determines if two SIDs represent a pair of related child and parent AppContainer SIDs. 216 | 217 | // Parameters 218 | // ParentAppContainerSid - a parent AppContainer SID. 219 | // ChildAppContainerSid - a child AppContainer SID. 220 | 221 | BOOLEAN NTAPI RtlIsParentOfChildAppContainer( 222 | _In_ PSID ParentAppContainerSid, 223 | _In_ PSID ChildAppContainerSid 224 | 225 | ) 226 | { 227 | ULONG i; 228 | APPCONTAINER_SID_TYPE SidType = 0 ; 229 | 230 | if (NT_SUCCESS(RtlGetAppContainerSidType(ParentAppContainerSid, &SidType)) && 231 | SidType == ParentAppContainerSidType && 232 | NT_SUCCESS(RtlGetAppContainerSidType(ChildAppContainerSid, &SidType)) && 233 | SidType == ChildAppContainerSidType) 234 | { 235 | i = 1; 236 | 237 | for (i = 1; i < SECURITY_APP_PACKAGE_RID_COUNT; i++) 238 | { 239 | if (*RtlSubAuthoritySid(ParentAppContainerSid, i) != *RtlSubAuthoritySid(ChildAppContainerSid, i)) 240 | { 241 | return FALSE; 242 | } 243 | } 244 | 245 | return TRUE; 246 | } 247 | return FALSE; 248 | } 249 | 250 | /* 251 | * Check if current process has permission to create a Low Box token 252 | * Returns STATUS_SUCCESS if authorized, STATUS_ACCESS_DENIED otherwise 253 | */ 254 | 255 | NTSTATUS SepCheckCreateLowBox(PSID CapturedSid) 256 | { 257 | PTOKEN ClientToken; 258 | SECURITY_SUBJECT_CONTEXT SubjectContext = { 0 }; 259 | 260 | // Capture security context 261 | SeCaptureSubjectContext(&SubjectContext); 262 | 263 | // Determine which token to use and verify impersonation level 264 | if (SubjectContext.ClientToken) 265 | { 266 | ClientToken = (PTOKEN)SubjectContext.ClientToken; 267 | if (SubjectContext.ImpersonationLevel < SecurityImpersonation) 268 | { 269 | SeReleaseSubjectContext(&SubjectContext); 270 | return STATUS_ACCESS_DENIED; 271 | } 272 | } 273 | else 274 | { 275 | ClientToken = (PTOKEN)SubjectContext.PrimaryToken; 276 | } 277 | 278 | // Check if token has elevated privileges 279 | if (ClientToken->TokenFlags & TOKEN_NOT_LOW) 280 | { 281 | SeReleaseSubjectContext(&SubjectContext); 282 | return STATUS_SUCCESS; 283 | } 284 | // Perform deep container validation if needed 285 | else if ((ClientToken->TokenFlags & TOKEN_LOWBOX) && 286 | RtlIsParentOfChildAppContainer( 287 | (PISID)ClientToken->Package, 288 | CapturedSid 289 | )) 290 | { 291 | SeReleaseSubjectContext(&SubjectContext); 292 | return STATUS_SUCCESS; 293 | } 294 | else 295 | { 296 | SeReleaseSubjectContext(&SubjectContext); 297 | return STATUS_ACCESS_DENIED; 298 | } 299 | } 300 | 301 | 302 | NTSTATUS __declspec(noalias) SeCaptureSidAndAttributesArray( 303 | __in_ecount(ArrayCount) PSID_AND_ATTRIBUTES InputArray, 304 | __in ULONG ArrayCount, 305 | __in KPROCESSOR_MODE RequestorMode, 306 | __in_bcount_opt(CaptureBufferLength) PVOID CaptureBuffer, 307 | __in ULONG CaptureBufferLength, 308 | __in POOL_TYPE PoolType, //unused 309 | __in BOOLEAN ForceCapture,//unused 310 | __deref_out_bcount_full(*AlignedArraySize) PSID_AND_ATTRIBUTES* CapturedArray, 311 | __out PULONG AlignedArraySize 312 | ) 313 | { 314 | 315 | typedef struct _TEMP_ARRAY_ELEMENT { 316 | PISID Sid; 317 | ULONG SidLength; 318 | } TEMP_ARRAY_ELEMENT; 319 | 320 | 321 | 322 | 323 | TEMP_ARRAY_ELEMENT* TempArray = NULL; 324 | 325 | NTSTATUS CompletionStatus = STATUS_SUCCESS; 326 | 327 | ULONG ArraySize; 328 | ULONG AlignedLengthRequired; 329 | 330 | ULONG NextIndex; 331 | 332 | PSID_AND_ATTRIBUTES NextElement; 333 | PVOID NextBufferLocation; 334 | 335 | ULONG GetSidSubAuthorityCount; 336 | ULONG SidSize; 337 | ULONG AlignedSidSize; 338 | 339 | UNREFERENCED_PARAMETER(ForceCapture); 340 | UNREFERENCED_PARAMETER(PoolType); 341 | 342 | if (ArrayCount == 0) 343 | { 344 | *CapturedArray = NULL; 345 | *AlignedArraySize = 0; 346 | return STATUS_SUCCESS; 347 | } 348 | 349 | if (ArrayCount > SEP_MAX_GROUP_COUNT) 350 | { 351 | return STATUS_INVALID_PARAMETER; 352 | } 353 | 354 | 355 | ArraySize = ArrayCount * (ULONG)sizeof(TEMP_ARRAY_ELEMENT); 356 | AlignedLengthRequired = (ULONG)LongAlignSize(ArraySize); 357 | 358 | if (RequestorMode != KernelMode) 359 | { 360 | 361 | TempArray = (TEMP_ARRAY_ELEMENT*)ExAllocatePoolWithTag((POOL_TYPE)(POOL_ZERO_ALLOCATION | PagedPool), AlignedLengthRequired, 'aTeS'); 362 | 363 | if (TempArray == NULL) 364 | { 365 | return STATUS_INSUFFICIENT_RESOURCES; 366 | } 367 | 368 | 369 | try 370 | { 371 | 372 | ProbeForRead(InputArray, ArraySize, sizeof(ULONG)); 373 | 374 | NextIndex = 0; 375 | 376 | while (NextIndex < ArrayCount) 377 | { 378 | PSID TempSid; 379 | 380 | TempSid = InputArray[NextIndex].Sid; 381 | GetSidSubAuthorityCount = ProbeAndReadUchar(&((PISID)TempSid)->SubAuthorityCount); 382 | 383 | if (GetSidSubAuthorityCount > SID_MAX_SUB_AUTHORITIES) 384 | { 385 | CompletionStatus = STATUS_INVALID_SID; 386 | break; 387 | } 388 | 389 | TempArray[NextIndex].Sid = ((PISID)(TempSid)); 390 | TempArray[NextIndex].SidLength = RtlLengthRequiredSid(GetSidSubAuthorityCount); 391 | 392 | ProbeForRead(TempArray[NextIndex].Sid, TempArray[NextIndex].SidLength, sizeof(ULONG)); 393 | 394 | AlignedLengthRequired += (ULONG)LongAlignSize(TempArray[NextIndex].SidLength); 395 | 396 | NextIndex += 1; 397 | 398 | } 399 | 400 | } except(EXCEPTION_EXECUTE_HANDLER) { 401 | 402 | ExFreePool(TempArray); 403 | return GetExceptionCode(); 404 | } 405 | 406 | if (!NT_SUCCESS(CompletionStatus)) 407 | { 408 | ExFreePool(TempArray); 409 | return CompletionStatus; 410 | } 411 | 412 | } 413 | else 414 | { 415 | NextIndex = 0; 416 | 417 | while (NextIndex < ArrayCount) { 418 | 419 | GetSidSubAuthorityCount = ((PISID)(InputArray[NextIndex].Sid))->SubAuthorityCount; 420 | 421 | AlignedLengthRequired += (ULONG)LongAlignSize(RtlLengthRequiredSid(GetSidSubAuthorityCount)); 422 | 423 | NextIndex += 1; 424 | 425 | } 426 | 427 | } 428 | 429 | *AlignedArraySize = AlignedLengthRequired; 430 | 431 | if (ARGUMENT_PRESENT(CaptureBuffer)) { 432 | 433 | if (AlignedLengthRequired > CaptureBufferLength) { 434 | 435 | if (RequestorMode != KernelMode) 436 | { 437 | ExFreePool(TempArray); 438 | } 439 | 440 | return STATUS_BUFFER_TOO_SMALL; 441 | 442 | } 443 | else { 444 | 445 | *CapturedArray = CaptureBuffer; 446 | } 447 | 448 | } 449 | else 450 | { 451 | *CapturedArray = (PSID_AND_ATTRIBUTES)ExAllocatePoolWithTag((POOL_TYPE)(POOL_ZERO_ALLOCATION | PagedPool), AlignedLengthRequired, SEP_SID_AND_ATTRIBUTES_TAG); 452 | 453 | if (*CapturedArray == NULL) 454 | { 455 | if (RequestorMode != KernelMode) 456 | { 457 | ExFreePool(TempArray); 458 | } 459 | return STATUS_INSUFFICIENT_RESOURCES; 460 | } 461 | } 462 | 463 | if (RequestorMode != KernelMode) 464 | { 465 | try 466 | { 467 | NextBufferLocation = (*CapturedArray); 468 | RtlCopyMemory(NextBufferLocation, InputArray, ArraySize); 469 | NextBufferLocation = (PVOID)((ULONG_PTR)NextBufferLocation + (ULONG)LongAlignSize(ArraySize)); 470 | 471 | NextIndex = 0; 472 | NextElement = (*CapturedArray); 473 | while ((NextIndex < ArrayCount) && (CompletionStatus == STATUS_SUCCESS)) 474 | { 475 | RtlCopyMemory(NextBufferLocation, TempArray[NextIndex].Sid, TempArray[NextIndex].SidLength); 476 | 477 | 478 | NextElement[NextIndex].Sid = (PSID)NextBufferLocation; 479 | 480 | NextBufferLocation = (PVOID)((ULONG_PTR)NextBufferLocation + (ULONG)LongAlignSize(TempArray[NextIndex].SidLength)); 481 | 482 | if (NextElement[NextIndex].Attributes & ~(SE_GROUP_VALID_ATTRIBUTES)) { 483 | CompletionStatus = STATUS_INVALID_PARAMETER; 484 | } 485 | else if (!RtlValidSid(NextElement[NextIndex].Sid)) { 486 | CompletionStatus = STATUS_INVALID_SID; 487 | } 488 | else if (RtlLengthSid(NextElement[NextIndex].Sid) != TempArray[NextIndex].SidLength) { 489 | CompletionStatus = STATUS_INVALID_SID; 490 | } 491 | 492 | NextIndex += 1; 493 | 494 | } 495 | 496 | 497 | } 498 | except(EXCEPTION_EXECUTE_HANDLER) 499 | { 500 | if (!ARGUMENT_PRESENT(CaptureBuffer)) { 501 | ExFreePool((*CapturedArray)); 502 | *CapturedArray = NULL; 503 | } 504 | 505 | ExFreePool(TempArray); 506 | 507 | return GetExceptionCode(); 508 | } 509 | } 510 | else 511 | { 512 | 513 | NextBufferLocation = (*CapturedArray); 514 | 515 | RtlCopyMemory(NextBufferLocation, InputArray, ArraySize); 516 | 517 | NextBufferLocation = (PVOID)((ULONG_PTR)NextBufferLocation + (ULONG)LongAlignSize(ArraySize)); 518 | 519 | NextIndex = 0; 520 | NextElement = (*CapturedArray); 521 | while (NextIndex < ArrayCount) 522 | { 523 | GetSidSubAuthorityCount = ((PISID)(NextElement[NextIndex].Sid))->SubAuthorityCount; 524 | 525 | SidSize = RtlLengthRequiredSid(GetSidSubAuthorityCount); 526 | 527 | RtlCopyMemory(NextBufferLocation, NextElement[NextIndex].Sid, SidSize); 528 | 529 | AlignedSidSize = (ULONG)LongAlignSize(SidSize); 530 | 531 | NextElement[NextIndex].Sid = (PSID)NextBufferLocation; 532 | 533 | NextIndex += 1; 534 | 535 | NextBufferLocation = (PVOID)((ULONG_PTR)NextBufferLocation + AlignedSidSize); 536 | 537 | } 538 | 539 | } 540 | 541 | if (RequestorMode != KernelMode) 542 | { 543 | ExFreePool(TempArray); 544 | } 545 | 546 | if (!ARGUMENT_PRESENT(CaptureBuffer) && !NT_SUCCESS(CompletionStatus)) 547 | { 548 | 549 | ExFreePool(*CapturedArray); 550 | 551 | *CapturedArray = NULL; 552 | } 553 | 554 | return CompletionStatus; 555 | } 556 | 557 | VOID SeReleaseLuidAndAttributesArray(PSID_AND_ATTRIBUTES Array, KPROCESSOR_MODE Mode , BOOLEAN bForceCapture) 558 | { 559 | if (((Mode == KernelMode) && (bForceCapture == TRUE)) || 560 | (Mode == UserMode)) 561 | { 562 | if (Array != NULL) 563 | { 564 | ExFreePool(Array); 565 | } 566 | } 567 | } 568 | 569 | VOID SeReleaseSid(__in PSID CapturedSid, __in KPROCESSOR_MODE RequestorMode, __in BOOLEAN ForceCapture) 570 | { 571 | 572 | if (((RequestorMode == KernelMode) && (ForceCapture == TRUE)) || (RequestorMode == UserMode)) { 573 | 574 | ExFreePool(CapturedSid); 575 | } 576 | 577 | return; 578 | 579 | } 580 | 581 | NTSTATUS SepCaptureHandles(ULONG HandleCount, HANDLE* InputHandles, PHANDLE* CapturedHandles) 582 | { 583 | HANDLE* AllocatedHandles; 584 | ULONG i; 585 | 586 | 587 | *CapturedHandles = NULL; 588 | 589 | if (HandleCount > 10) 590 | return STATUS_INVALID_PARAMETER_1; 591 | 592 | if (HandleCount == 0) 593 | return STATUS_SUCCESS; 594 | 595 | AllocatedHandles = ExAllocatePool2(POOL_FLAG_PAGED, sizeof(HANDLE) * HandleCount, SEP_HANDLES_CAPTURE_TAG); 596 | 597 | if (AllocatedHandles == NULL) 598 | { 599 | return STATUS_INSUFFICIENT_RESOURCES; 600 | } 601 | 602 | __try 603 | { 604 | for (i = 0; i < HandleCount; i++) 605 | { 606 | AllocatedHandles[i] = InputHandles[i]; 607 | } 608 | } 609 | __except (EXCEPTION_EXECUTE_HANDLER) 610 | { 611 | NTSTATUS Status; 612 | Status = GetExceptionCode(); 613 | 614 | if (!NT_SUCCESS(Status)) 615 | { 616 | ExFreePool(AllocatedHandles); 617 | } 618 | 619 | return Status; 620 | } 621 | *CapturedHandles = AllocatedHandles; 622 | return STATUS_SUCCESS; 623 | } 624 | 625 | BOOLEAN RtlIsPackageSid(PISID Sid) 626 | { 627 | return (Sid->SubAuthorityCount >= SECURITY_BUILTIN_APP_PACKAGE_RID_COUNT && 628 | Sid->Revision == SID_REVISION && 629 | RtlCompareMemory(&Sid->IdentifierAuthority, &RtlpAppPackageAuthority, sizeof(SID_IDENTIFIER_AUTHORITY)) == sizeof(SID_IDENTIFIER_AUTHORITY) && 630 | Sid->SubAuthority[0] == SECURITY_APP_PACKAGE_BASE_RID); 631 | } 632 | 633 | BOOLEAN RtlIsCapabilitySid(PISID Sid) 634 | { 635 | return (Sid->SubAuthorityCount >= SECURITY_BUILTIN_CAPABILITY_RID_COUNT && 636 | Sid->Revision == SID_REVISION && 637 | RtlCompareMemory(&Sid->IdentifierAuthority, &RtlpAppPackageAuthority, sizeof(SID_IDENTIFIER_AUTHORITY)) == sizeof(SID_IDENTIFIER_AUTHORITY) && 638 | Sid->SubAuthority[0] == SECURITY_CAPABILITY_BASE_RID); 639 | } 640 | 641 | 642 | BOOLEAN SepIsLpacCapabilitySid(PSID Sid) 643 | { 644 | ULONG Index; 645 | 646 | for (Index = 0; Index < SE_LPAC_CAPABILITY_COUNT; Index++) 647 | { 648 | if (RtlEqualSid(Sid, *SeLpacCapabilitySids[Index])) 649 | { 650 | return TRUE; 651 | } 652 | } 653 | 654 | return FALSE; 655 | } 656 | 657 | 658 | NTSTATUS SepCheckCapabilities(PACCESS_TOKEN Token, ULONG CapabilityCount, SID_AND_ATTRIBUTES* CapabilityArray, PVOID Unused, BOOLEAN* pbCapLegit) 659 | { 660 | NTSTATUS Status; 661 | ULONG TokenIsLPAC = 0; 662 | TOKEN_GROUPS* TokenGroups = NULL; 663 | ULONG IsAppContainer = 0; 664 | ULONG Index = 0; 665 | ULONG GroupsIndex = 0; 666 | PTOKEN_APPCONTAINER_INFORMATION pTokenAppcontainerSid = NULL; 667 | 668 | UNREFERENCED_PARAMETER(Unused); 669 | 670 | 671 | *pbCapLegit = FALSE; 672 | 673 | // Non-AppContainer tokens are always considered legitimate 674 | 675 | Status = SeQueryInformationToken(Token, TokenIsAppContainer, (PVOID) & IsAppContainer); 676 | 677 | if (!NT_SUCCESS(Status)) 678 | { 679 | goto Exit; 680 | } 681 | 682 | if (IsAppContainer == 0) 683 | { 684 | *pbCapLegit = TRUE; 685 | goto Exit; 686 | } 687 | 688 | Status = SeQueryInformationToken(Token, TokenCapabilities, (PVOID)&TokenGroups); 689 | 690 | if (!NT_SUCCESS(Status)) 691 | { 692 | goto Exit; 693 | } 694 | 695 | Status = SeQueryInformationToken(Token, TokenIsLessPrivilegedAppContainer, (PVOID)&TokenIsLPAC); 696 | 697 | if (!NT_SUCCESS(Status)) 698 | { 699 | goto Exit; 700 | } 701 | 702 | for (Index = 0; Index < CapabilityCount; Index++) 703 | { 704 | //If exisiting token is not LPAC and capability sid is lpac capability sid 705 | 706 | if (TokenIsLPAC == FALSE && SepIsLpacCapabilitySid(CapabilityArray[Index].Sid)) 707 | { 708 | continue; 709 | } 710 | 711 | //Already exist capability of existing token 712 | 713 | for (GroupsIndex = 0; GroupsIndex < TokenGroups->GroupCount; GroupsIndex++) 714 | { 715 | if (RtlEqualSid(TokenGroups->Groups[GroupsIndex].Sid, CapabilityArray[Index].Sid) && 716 | TokenGroups->Groups[GroupsIndex].Attributes == CapabilityArray[Index].Attributes) 717 | { 718 | break; 719 | } 720 | } 721 | 722 | if (GroupsIndex != TokenGroups->GroupCount) 723 | { 724 | continue; 725 | } 726 | 727 | //not existing capability, check installer group 728 | 729 | if (((PISID)CapabilityArray[Index].Sid)->SubAuthorityCount != SECURITY_INSTALLER_GROUP_CAPABILITY_RID_COUNT || 730 | *(RtlSubAuthoritySid(CapabilityArray[Index].Sid, 0)) != SECURITY_CAPABILITY_BASE_RID) 731 | { 732 | *pbCapLegit = FALSE; 733 | break; 734 | } 735 | 736 | if (pTokenAppcontainerSid == NULL) 737 | { 738 | Status = SeQueryInformationToken(Token, TokenAppContainerSid, &pTokenAppcontainerSid); 739 | 740 | if (!NT_SUCCESS(Status)) 741 | { 742 | break; 743 | } 744 | } 745 | 746 | if (*RtlSubAuthorityCountSid(pTokenAppcontainerSid->TokenAppContainer) >= SECURITY_APP_PACKAGE_RID_COUNT && 747 | RtlCompareMemory(RtlSubAuthoritySid(pTokenAppcontainerSid->TokenAppContainer, 1), 748 | RtlSubAuthoritySid(CapabilityArray[Index].Sid, 1), 749 | (SECURITY_APP_PACKAGE_RID_COUNT - 1) * sizeof(ULONG)) == (SECURITY_APP_PACKAGE_RID_COUNT - 1) * sizeof(ULONG)) 750 | { 751 | continue; 752 | } 753 | else 754 | { 755 | *pbCapLegit = FALSE; 756 | break; 757 | } 758 | } 759 | 760 | if (CapabilityCount == Index) 761 | { 762 | *pbCapLegit = TRUE; 763 | } 764 | 765 | Exit: 766 | if (TokenGroups) 767 | ExFreePool(TokenGroups); 768 | if (pTokenAppcontainerSid) 769 | ExFreePool(pTokenAppcontainerSid); 770 | return Status; 771 | } 772 | 773 | NTSTATUS 774 | SepDuplicateToken( 775 | __in PTOKEN ExistingToken, 776 | __in POBJECT_ATTRIBUTES ObjectAttributes, 777 | __in BOOLEAN EffectiveOnly, 778 | __in TOKEN_TYPE TokenType, 779 | __in SECURITY_IMPERSONATION_LEVEL ImpersonationLevel, 780 | __in KPROCESSOR_MODE RequestorMode, 781 | __in BOOLEAN SkipNonInheritableSecurityAttributes, 782 | __deref_out PTOKEN* DuplicateToken 783 | ) 784 | { 785 | return KernelSymbols.SepDuplicateToken(ExistingToken, ObjectAttributes, EffectiveOnly, TokenType, ImpersonationLevel, RequestorMode, SkipNonInheritableSecurityAttributes, DuplicateToken); 786 | } 787 | 788 | NTSTATUS SeSetMandatoryPolicyToken(PTOKEN Token, PTOKEN_MANDATORY_POLICY MandatoryPolicy) 789 | { 790 | if (MandatoryPolicy->Policy & (~TOKEN_MANDATORY_POLICY_VALID_MASK)) 791 | { 792 | return STATUS_INVALID_PARAMETER; 793 | } 794 | 795 | SepAcquireTokenWriteLock(Token); 796 | 797 | Token->MandatoryPolicy = MandatoryPolicy->Policy; 798 | 799 | SepReleaseTokenWriteLock(Token, TRUE); 800 | return STATUS_SUCCESS; 801 | } 802 | 803 | PSID_AND_ATTRIBUTES SepLocateTokenIntegrity(PTOKEN Token) 804 | { 805 | if (Token->IntegrityLevelIndex == -1) 806 | { 807 | return NULL; 808 | } 809 | 810 | return &Token->UserAndGroups[Token->IntegrityLevelIndex]; 811 | } 812 | //BOOLEAN SepTokenCapabilitySidSharingEnabled; 813 | 814 | 815 | NTSTATUS SepLengthSidAndAttributesArray(PSID_AND_ATTRIBUTES Caps, ULONG CapCount, PULONG pCapturedSize) 816 | { 817 | PVOID CaptureBuffer; 818 | NTSTATUS Status; 819 | PSID_AND_ATTRIBUTES CapturedCaps; 820 | ULONG CapturedSize; 821 | 822 | 823 | CapturedSize = 0; 824 | CapturedCaps = NULL; 825 | 826 | CaptureBuffer = ExAllocatePool2(POOL_FLAG_PAGED, 8, 'aSeS'); 827 | 828 | if (CaptureBuffer == NULL) 829 | { 830 | return STATUS_INSUFFICIENT_RESOURCES; 831 | } 832 | 833 | Status = SeCaptureSidAndAttributesArray( 834 | Caps, 835 | CapCount, 836 | KernelMode, 837 | CaptureBuffer, 838 | 8, 839 | PagedPool, 840 | FALSE, 841 | &CapturedCaps, 842 | &CapturedSize); 843 | 844 | *pCapturedSize = CapturedSize; 845 | if (Status == STATUS_BUFFER_TOO_SMALL) 846 | { 847 | Status = STATUS_SUCCESS; 848 | } 849 | 850 | ExFreePool(CaptureBuffer); 851 | return Status; 852 | } 853 | typedef struct SID_MAPPING 854 | { 855 | EX_PUSH_LOCK Lock; 856 | PRTL_DYNAMIC_HASH_TABLE HashTable; 857 | }SID_MAPPING, * PSID_MAPPING; 858 | 859 | //PSID_MAPPING g_SepSidMapping; 860 | 861 | typedef struct SHARED_SID_ENTRY { 862 | RTL_DYNAMIC_HASH_TABLE_ENTRY Entry; 863 | LONG64 ReferCount; 864 | PSID Sid; 865 | }SHARED_SID_ENTRY, * PSHARED_SID_ENTRY; 866 | 867 | PSHARED_SID_ENTRY SepFindSharedSidEntry(PISID Sid) 868 | { 869 | ULONG_PTR IDAuthValue; 870 | PRTL_DYNAMIC_HASH_TABLE_ENTRY i; 871 | RTL_DYNAMIC_HASH_TABLE_CONTEXT Context; 872 | PSID_MAPPING g_SepSidMapping = *(PSID_MAPPING*)(KernelSymbols.g_SepSidMapping); 873 | 874 | memset(&Context, 0, sizeof(Context)); 875 | 876 | IDAuthValue = SID_HASH_ULONG(Sid); 877 | 878 | if (IDAuthValue == 0) 879 | { 880 | IDAuthValue = 1; 881 | } 882 | 883 | for (i = RtlLookupEntryHashTable(g_SepSidMapping->HashTable, IDAuthValue, &Context); 884 | ; 885 | i = RtlGetNextEntryHashTable(g_SepSidMapping->HashTable, &Context)) 886 | { 887 | if (!i) 888 | break; 889 | if (RtlEqualSid(Sid, CONTAINING_RECORD(i, SHARED_SID_ENTRY, Entry)->Sid)) 890 | return NULL; 891 | } 892 | return CONTAINING_RECORD(i, SHARED_SID_ENTRY, Entry); 893 | } 894 | 895 | VOID SepDeReferenceSharedSidEntries(PSID_AND_ATTRIBUTES Capabilities, ULONG CapabilityCount) 896 | { 897 | ULONG CapCount; 898 | PSHARED_SID_ENTRY HashEntry; 899 | PSID_MAPPING g_SepSidMapping = *(PSID_MAPPING*)(KernelSymbols.g_SepSidMapping); 900 | 901 | KeEnterCriticalRegion(); 902 | ExAcquirePushLockExclusive(&g_SepSidMapping->Lock); 903 | 904 | for (CapCount = 0; CapCount < CapabilityCount; CapCount++) 905 | { 906 | HashEntry = SepFindSharedSidEntry(Capabilities[CapCount].Sid); 907 | 908 | PSHARED_SID_ENTRY SidEntry = CONTAINING_RECORD(HashEntry, SHARED_SID_ENTRY, Entry); 909 | LONG64 NewRef = InterlockedDecrement64(&SidEntry->ReferCount); 910 | 911 | if (NewRef <= 0) 912 | { 913 | if (NewRef) 914 | { 915 | RtlFailFast(FAST_FAIL_INVALID_REFERENCE_COUNT); 916 | //never return 917 | } 918 | 919 | if (RtlRemoveEntryHashTable(g_SepSidMapping->HashTable, &HashEntry->Entry, NULL)) 920 | { 921 | ExFreePool(HashEntry); 922 | } 923 | } 924 | } 925 | 926 | ExReleasePushLockExclusive(&g_SepSidMapping->Lock); 927 | 928 | KeLeaveCriticalRegion(); 929 | 930 | return; 931 | } 932 | 933 | 934 | VOID SepFreeTokenCapabilities(PTOKEN Token) 935 | { 936 | if (*(BOOLEAN*)(KernelSymbols.SepTokenCapabilitySidSharingEnabled)) 937 | { 938 | SepDeReferenceSharedSidEntries(Token->Capabilities, Token->CapabilityCount); 939 | } 940 | ExFreePool(Token->Capabilities); 941 | } 942 | 943 | NTSTATUS SepInsertOrReferenceSharedSidEntries(SID_AND_ATTRIBUTES* Capabilities , SID_AND_ATTRIBUTES* OutputSaA , ULONG CapabilityCount) 944 | { 945 | NTSTATUS Status = STATUS_SUCCESS; 946 | ULONG i; 947 | PSHARED_SID_ENTRY SidEntry; 948 | PISID Sid; 949 | ULONG Signature; 950 | ULONG SidEntrySize; 951 | LONGLONG RefCount; 952 | PSID_MAPPING g_SepSidMapping = *(PSID_MAPPING*)(KernelSymbols.g_SepSidMapping); 953 | 954 | KeEnterCriticalRegion(); 955 | 956 | ExAcquirePushLockExclusive(&g_SepSidMapping->Lock); 957 | 958 | for (i = 0; i < CapabilityCount; i++) 959 | { 960 | OutputSaA[i].Attributes = Capabilities[i].Attributes; 961 | 962 | SidEntry = SepFindSharedSidEntry(Capabilities->Sid); 963 | 964 | if (SidEntry) 965 | { 966 | if (InterlockedIncrement64(&SidEntry->ReferCount) <= 1) 967 | { 968 | RtlFailFast(FAST_FAIL_INVALID_REFERENCE_COUNT); 969 | //never return 970 | } 971 | 972 | Sid = SidEntry->Sid; 973 | } 974 | else 975 | { 976 | SidEntrySize = (((PISID)(Capabilities[i].Sid))->SubAuthorityCount * sizeof(ULONG) + FIELD_OFFSET(SID, SubAuthority) + sizeof(SHARED_SID_ENTRY)) * 2; //why mul by 2? 977 | 978 | SidEntry = (PSHARED_SID_ENTRY)ExAllocatePool2(POOL_FLAG_PAGED, SidEntrySize, SEP_SID_SHARING_TAG); 979 | 980 | if (SidEntry == NULL) 981 | { 982 | Status = STATUS_NO_MEMORY; 983 | break; 984 | } 985 | 986 | SidEntry->Sid = (PSID)((ULONG_PTR)SidEntry + sizeof(SHARED_SID_ENTRY)); 987 | SidEntry->ReferCount = 1; 988 | 989 | //SidEntrySize was multiplied by 2 but here it's only subtracting a single structure size 990 | 991 | RtlCopySid(SidEntrySize - sizeof(SHARED_SID_ENTRY), (PSID)((ULONG_PTR)SidEntry + sizeof(SHARED_SID_ENTRY)), Capabilities[i].Sid); 992 | 993 | Signature = SID_HASH_ULONG(Capabilities[i].Sid); 994 | 995 | if (Signature == 0) 996 | { 997 | Signature = 1; 998 | } 999 | 1000 | if (RtlInsertEntryHashTable(g_SepSidMapping->HashTable, &SidEntry->Entry, Signature, NULL) == FALSE) 1001 | { 1002 | Status = STATUS_UNSUCCESSFUL; 1003 | ExFreePoolWithTag(SidEntry, SEP_SID_SHARING_TAG); 1004 | break; 1005 | } 1006 | } 1007 | 1008 | //output inserted or referenced sid entry 1009 | 1010 | OutputSaA[i].Sid = SidEntry->Sid; 1011 | } 1012 | 1013 | //capability list not fully processed 1014 | if (i != CapabilityCount) 1015 | { 1016 | for (; i; i--) 1017 | { 1018 | //it must be able to find in the shared sid table 1019 | 1020 | SidEntry = SepFindSharedSidEntry(OutputSaA->Sid); 1021 | 1022 | 1023 | RefCount = InterlockedDecrement64(&SidEntry->ReferCount); 1024 | 1025 | if (RefCount <= 0) 1026 | { 1027 | if (RefCount) 1028 | { 1029 | RtlFailFast(FAST_FAIL_INVALID_REFERENCE_COUNT); 1030 | //never return 1031 | } 1032 | 1033 | //reference count == 0 1034 | 1035 | if (RtlRemoveEntryHashTable(g_SepSidMapping->HashTable, &SidEntry->Entry, NULL)) 1036 | { 1037 | ExFreePool(SidEntry); 1038 | } 1039 | } 1040 | 1041 | OutputSaA++; 1042 | } 1043 | } 1044 | 1045 | ExReleasePushLockExclusive(&g_SepSidMapping->Lock); 1046 | 1047 | KeLeaveCriticalRegion(); 1048 | 1049 | return Status; 1050 | } 1051 | 1052 | NTSTATUS SepSetTokenCapabilities( 1053 | PTOKEN Token, 1054 | PISID Sid, 1055 | PSID_AND_ATTRIBUTES CapabilityArray, 1056 | ULONG CapabilityCount) 1057 | { 1058 | NTSTATUS Status; 1059 | unsigned int CapLength; 1060 | PVOID CaptureBuffer; 1061 | PSID Package; 1062 | PSID_AND_ATTRIBUTES CapturedCap; 1063 | ULONG CapturedSize; 1064 | 1065 | CapturedSize = 0; 1066 | CapturedCap = NULL; 1067 | 1068 | if (Token->Capabilities) 1069 | { 1070 | if (Sid == NULL) 1071 | { 1072 | return STATUS_ACCESS_DENIED; 1073 | } 1074 | 1075 | Package = Token->Package; 1076 | 1077 | if (Package) 1078 | { 1079 | if (!RtlIsParentOfChildAppContainer(Package, Sid)) 1080 | { 1081 | return STATUS_ACCESS_DENIED; 1082 | } 1083 | } 1084 | } 1085 | 1086 | if (CapabilityCount) 1087 | { 1088 | if (CapabilityCount > SEP_MAX_GROUP_COUNT) 1089 | { 1090 | return STATUS_INVALID_PARAMETER; 1091 | } 1092 | 1093 | if (*(BOOLEAN*)(KernelSymbols.SepTokenCapabilitySidSharingEnabled)) 1094 | { 1095 | CapLength = sizeof(SID_AND_ATTRIBUTES) * CapabilityCount * 2 ; //why mul by 2? 1096 | } 1097 | else 1098 | { 1099 | Status = SepLengthSidAndAttributesArray(CapabilityArray, CapabilityCount, &CapturedSize); 1100 | 1101 | if (!NT_SUCCESS(Status)) 1102 | { 1103 | return Status; 1104 | } 1105 | 1106 | CapLength = CapturedSize; 1107 | } 1108 | 1109 | CaptureBuffer = ExAllocatePool2(POOL_FLAG_PAGED, CapLength, SEP_SID_SHARING_TAG); 1110 | 1111 | if (CaptureBuffer == NULL) 1112 | { 1113 | return STATUS_INSUFFICIENT_RESOURCES; 1114 | } 1115 | 1116 | if (*(BOOLEAN*)(KernelSymbols.SepTokenCapabilitySidSharingEnabled)) 1117 | { 1118 | Status = SepInsertOrReferenceSharedSidEntries(CapabilityArray, (SID_AND_ATTRIBUTES*)CaptureBuffer, CapabilityCount); 1119 | } 1120 | else 1121 | { 1122 | Status = SeCaptureSidAndAttributesArray( 1123 | CapabilityArray, 1124 | CapabilityCount, 1125 | KernelMode, 1126 | CaptureBuffer, 1127 | CapLength, 1128 | PagedPool, 1129 | FALSE, 1130 | &CapturedCap, 1131 | &CapturedSize); 1132 | } 1133 | 1134 | if (!NT_SUCCESS(Status)) 1135 | { 1136 | ExFreePool(CaptureBuffer); 1137 | } 1138 | else 1139 | { 1140 | if (Token->Capabilities) 1141 | SepFreeTokenCapabilities(Token); 1142 | 1143 | Token->Capabilities = CapturedCap; 1144 | Token->CapabilityCount = CapabilityCount; 1145 | RtlSidHashInitialize((PSID_AND_ATTRIBUTES)CaptureBuffer, CapabilityCount, &Token->CapabilitiesHash); 1146 | } 1147 | return Status; 1148 | } 1149 | else 1150 | { 1151 | if (Token->Capabilities) 1152 | { 1153 | SepFreeTokenCapabilities(Token); 1154 | } 1155 | 1156 | Token->Capabilities = NULL; 1157 | Token->CapabilityCount = 0; 1158 | 1159 | //added 24h2, cleanup hash 1160 | RtlZeroMemory(&Token->CapabilitiesHash, sizeof(SID_AND_ATTRIBUTES_HASH)); 1161 | return STATUS_SUCCESS; 1162 | } 1163 | 1164 | } 1165 | 1166 | BOOLEAN SepSidInTokenSidHash(PSID_AND_ATTRIBUTES_HASH SidHash, PSID PrincipalSelfSid, PSID Sid, BOOLEAN DenyAce, BOOLEAN Restricted, BOOLEAN TokenIsOwner) 1167 | { 1168 | PSID CurrentSid = Sid; 1169 | ULONG SidLength; 1170 | UCHAR SidRevsion; 1171 | UCHAR Hash; 1172 | SID_HASH_ENTRY HashLookupEntry; 1173 | ULONG ByteIndex; 1174 | UCHAR ByteLocation; 1175 | ULONG Index; 1176 | PSID_AND_ATTRIBUTES pSAHash; 1177 | ULONG i; 1178 | 1179 | if (PrincipalSelfSid != NULL && RtlEqualSid(SePrincipalSelfSid, Sid)) 1180 | { 1181 | CurrentSid = PrincipalSelfSid; 1182 | } 1183 | 1184 | if (TokenIsOwner && RtlEqualSid(SeOwnerRightsSid, CurrentSid)) 1185 | { 1186 | return TRUE; 1187 | } 1188 | 1189 | if (SidHash == NULL || CurrentSid == NULL) 1190 | { 1191 | return FALSE; 1192 | } 1193 | 1194 | SidLength = SeLengthSid(CurrentSid); 1195 | SidRevsion = ((PISID)CurrentSid)->Revision; 1196 | 1197 | Hash = AUTHZ_SID_HASH_BYTE(CurrentSid); 1198 | HashLookupEntry = AUTHZ_SID_HASH_LOOKUP(SidHash->Hash, Hash); 1199 | 1200 | ByteIndex = 0; 1201 | 1202 | while (HashLookupEntry) 1203 | { 1204 | ByteLocation = (UCHAR)HashLookupEntry; 1205 | 1206 | while (ByteLocation) 1207 | { 1208 | Index = SidHashByteToIndexLookupTable[ByteLocation]; 1209 | 1210 | pSAHash = &SidHash->SidAttr[ByteIndex + Index]; 1211 | 1212 | if (((PISID)(pSAHash->Sid))->Revision == SidRevsion && 1213 | ((PISID)(pSAHash->Sid))->SubAuthorityCount == ((PISID)CurrentSid)->SubAuthorityCount) 1214 | { 1215 | if (memcmp(CurrentSid, pSAHash->Sid, SidLength) == 0) 1216 | { 1217 | goto GetHashSA; 1218 | } 1219 | } 1220 | 1221 | ByteLocation = ByteLocation ^ (1 << Index); 1222 | 1223 | } 1224 | 1225 | ByteIndex += 8; 1226 | HashLookupEntry >>= 8; 1227 | } 1228 | 1229 | if (SidHash->SidCount > AUTHZI_SID_HASH_ENTRY_NUM_BITS) 1230 | { 1231 | for (i = AUTHZI_SID_HASH_ENTRY_NUM_BITS; i < SidHash->SidCount; i++) 1232 | { 1233 | pSAHash = &SidHash->SidAttr[i]; 1234 | 1235 | if (((PISID)(pSAHash->Sid))->Revision == SidRevsion && 1236 | ((PISID)(pSAHash->Sid))->SubAuthorityCount == ((PISID)CurrentSid)->SubAuthorityCount) 1237 | { 1238 | if (memcmp(CurrentSid, pSAHash->Sid, SidLength) == 0) 1239 | { 1240 | goto GetHashSA; 1241 | } 1242 | } 1243 | 1244 | } 1245 | } 1246 | 1247 | return FALSE; 1248 | 1249 | GetHashSA: 1250 | 1251 | if (Restricted == FALSE && pSAHash != SidHash->SidAttr) 1252 | { 1253 | if ((pSAHash->Attributes & SE_GROUP_USE_FOR_DENY_ONLY) == 0) 1254 | { 1255 | return TRUE; 1256 | } 1257 | 1258 | if (DenyAce) 1259 | { 1260 | return TRUE; 1261 | } 1262 | } 1263 | 1264 | if ((pSAHash->Attributes & SE_GROUP_ENABLED) || (DenyAce && (pSAHash->Attributes & SE_GROUP_USE_FOR_DENY_ONLY))) 1265 | { 1266 | return TRUE; 1267 | 1268 | } 1269 | else 1270 | { 1271 | return FALSE; 1272 | } 1273 | } 1274 | 1275 | 1276 | NTSTATUS SepGetTokenSessionMapEntry(ULONG SessionId, BOOLEAN bInsert, PSEP_LOWBOX_NUMBER_MAPPING* pLowboxNumberMapping) 1277 | { 1278 | PSESSION_LOWBOX_MAP MapEntry; 1279 | PLIST_ENTRY entry; 1280 | 1281 | *pLowboxNumberMapping = NULL; 1282 | 1283 | //create list entry of lowbox map if it's not yet initialized 1284 | 1285 | if (*(PLIST_ENTRY*)(KernelSymbols.g_SessionLowboxMap) == NULL) 1286 | { 1287 | if (bInsert == FALSE) 1288 | { 1289 | return STATUS_NOT_FOUND; 1290 | } 1291 | 1292 | *(PLIST_ENTRY*)(KernelSymbols.g_SessionLowboxMap) = (PLIST_ENTRY)ExAllocatePool2(POOL_FLAG_PAGED, sizeof(LIST_ENTRY), SEP_LOWBOX_SESSION_TAG); 1293 | 1294 | if (*(PLIST_ENTRY*)(KernelSymbols.g_SessionLowboxMap) == NULL) 1295 | { 1296 | return STATUS_INSUFFICIENT_RESOURCES; 1297 | } 1298 | 1299 | InitializeListHead(*(PLIST_ENTRY*)(KernelSymbols.g_SessionLowboxMap)); 1300 | } 1301 | 1302 | //find map entry 1303 | for (entry = (*(PLIST_ENTRY*)(KernelSymbols.g_SessionLowboxMap))->Flink; entry != *(PLIST_ENTRY*)(KernelSymbols.g_SessionLowboxMap); entry = entry->Flink) 1304 | { 1305 | MapEntry = (PSESSION_LOWBOX_MAP)CONTAINING_RECORD(entry, SESSION_LOWBOX_MAP, ListEntry); 1306 | 1307 | if (MapEntry->SessionId == SessionId) 1308 | { 1309 | *pLowboxNumberMapping = &MapEntry->LowboxMap; 1310 | return STATUS_SUCCESS; 1311 | } 1312 | } 1313 | 1314 | if (bInsert == FALSE) 1315 | { 1316 | return STATUS_NOT_FOUND; 1317 | } 1318 | 1319 | //insert new entry 1320 | 1321 | MapEntry = (PSESSION_LOWBOX_MAP)ExAllocatePool2(POOL_FLAG_PAGED, sizeof(SESSION_LOWBOX_MAP), SEP_LOWBOX_SESSION_TAG); 1322 | 1323 | if (MapEntry == NULL) 1324 | { 1325 | return STATUS_INSUFFICIENT_RESOURCES; 1326 | } 1327 | 1328 | ExInitializePushLock(&MapEntry->LowboxMap.Lock); 1329 | MapEntry->LowboxMap.Active = 0; 1330 | MapEntry->SessionId = SessionId; 1331 | 1332 | //insert into map list 1333 | InsertHeadList(*(PLIST_ENTRY*)(KernelSymbols.g_SessionLowboxMap), &MapEntry->ListEntry); 1334 | 1335 | *pLowboxNumberMapping = &MapEntry->LowboxMap; 1336 | 1337 | return STATUS_SUCCESS; 1338 | } 1339 | 1340 | #define LOWBOX_BITMAP_BITS 1024 1341 | NTSTATUS SepInitializeLowBoxNumberTable(PSEP_LOWBOX_NUMBER_MAPPING LowboxNumberMapping) 1342 | { 1343 | PVOID BitmapPool; 1344 | 1345 | LowboxNumberMapping->HashTable = NULL; 1346 | 1347 | if (RtlCreateHashTable(&LowboxNumberMapping->HashTable, 0, 0) == FALSE) 1348 | { 1349 | return STATUS_INSUFFICIENT_RESOURCES; 1350 | } 1351 | 1352 | BitmapPool = ExAllocatePool2(POOL_FLAG_PAGED, LOWBOX_BITMAP_BITS / 8, SEP_LOWBOX_SESSION_TAG); 1353 | 1354 | if (BitmapPool == NULL) 1355 | { 1356 | RtlDeleteHashTable(LowboxNumberMapping->HashTable); 1357 | return STATUS_INSUFFICIENT_RESOURCES; 1358 | } 1359 | else 1360 | { 1361 | LowboxNumberMapping->Bitmap.SizeOfBitMap = LOWBOX_BITMAP_BITS; 1362 | LowboxNumberMapping->Bitmap.Buffer = BitmapPool; 1363 | RtlClearAllBits(&LowboxNumberMapping->Bitmap); 1364 | LowboxNumberMapping->Active = 1; 1365 | } 1366 | 1367 | return STATUS_SUCCESS; 1368 | 1369 | } 1370 | VOID SepFindMatchingLowBoxNumberEntry(PRTL_DYNAMIC_HASH_TABLE HashTable, PISID Sid, PSEP_LOWBOX_NUMBER_ENTRY* pLowboxNumberEntry) 1371 | { 1372 | RTL_DYNAMIC_HASH_TABLE_CONTEXT Context; 1373 | ULONG Signature; 1374 | PRTL_DYNAMIC_HASH_TABLE_ENTRY Curr; 1375 | BOOLEAN bFound = FALSE; 1376 | 1377 | RtlZeroMemory(&Context, sizeof(Context)); 1378 | 1379 | Signature = SID_HASH_ULONG(Sid); 1380 | 1381 | if (Signature == 0) 1382 | { 1383 | Signature = 1; 1384 | } 1385 | 1386 | for (Curr = RtlLookupEntryHashTable(HashTable, Signature, &Context); Curr != NULL; Curr = RtlGetNextEntryHashTable(HashTable, &Context)) 1387 | { 1388 | if (RtlEqualSid(Sid, CONTAINING_RECORD(Curr, SEP_LOWBOX_NUMBER_ENTRY, HashEntry)->PackageSid)) 1389 | { 1390 | bFound = TRUE; 1391 | break; 1392 | } 1393 | } 1394 | 1395 | *pLowboxNumberEntry = bFound ? CONTAINING_RECORD(Curr, SEP_LOWBOX_NUMBER_ENTRY, HashEntry) : NULL; 1396 | 1397 | return; 1398 | } 1399 | #define MAX_LOWBOX_BITMAP_GROW_SIZE 0x10000 1400 | NTSTATUS SepGetLowBoxNumberEntry(PSEP_LOWBOX_NUMBER_MAPPING LowboxNumberMapping, PISID PackageSid, PSEP_LOWBOX_NUMBER_ENTRY* pLowboxNumberEntry) 1401 | { 1402 | PSEP_LOWBOX_NUMBER_ENTRY Entry = NULL; 1403 | ULONG NewEntryLength; 1404 | ULONG BitStartingIndex; 1405 | ULONG NewBitsCount; 1406 | PVOID NewBitmapBuffer; 1407 | ULONG HashTableSignature; 1408 | 1409 | //find for existing entry take package sid as key 1410 | 1411 | SepFindMatchingLowBoxNumberEntry(LowboxNumberMapping->HashTable, PackageSid, &Entry); 1412 | 1413 | //lowbox number with same sid exists 1414 | 1415 | if (Entry) 1416 | { 1417 | if (InterlockedIncrement64( & Entry->ReferenceCount) <= 1) 1418 | { 1419 | RtlFailFast(FAST_FAIL_INVALID_REFERENCE_COUNT); 1420 | //never return 1421 | } 1422 | *pLowboxNumberEntry = Entry; 1423 | return STATUS_SUCCESS; 1424 | } 1425 | 1426 | //create new lowbox number 1427 | 1428 | //calcaute entry size 1429 | 1430 | NewEntryLength = LongAlignSize(SeLengthSid(PackageSid) + sizeof(SEP_LOWBOX_NUMBER_ENTRY)); 1431 | 1432 | Entry = ExAllocatePool2(POOL_FLAG_PAGED, NewEntryLength, SEP_LOWBOX_SESSION_TAG); 1433 | 1434 | if (Entry == NULL) 1435 | { 1436 | return STATUS_INSUFFICIENT_RESOURCES; 1437 | } 1438 | 1439 | //Copy package SID content 1440 | 1441 | Entry->PackageSid = (PISID)((ULONG_PTR)Entry + sizeof(SEP_LOWBOX_NUMBER_ENTRY)); 1442 | RtlCopySid(NewEntryLength - sizeof(SEP_LOWBOX_NUMBER_ENTRY), (PISID)((ULONG_PTR)Entry + sizeof(SEP_LOWBOX_NUMBER_ENTRY)), PackageSid); 1443 | 1444 | BitStartingIndex = RtlFindClearBitsAndSet(&LowboxNumberMapping->Bitmap, 1, 0); 1445 | 1446 | //all bits are dirty, grow a new bitmap 1447 | 1448 | if (BitStartingIndex == 0xFFFFFFFF) 1449 | { 1450 | //Double the bitmap size 1451 | 1452 | NewBitsCount = 2 * RtlNumberOfSetBits(&LowboxNumberMapping->Bitmap); 1453 | 1454 | if (NewBitsCount > MAX_LOWBOX_BITMAP_GROW_SIZE) 1455 | { 1456 | ExFreePool(Entry); 1457 | return STATUS_INSUFFICIENT_RESOURCES; 1458 | } 1459 | 1460 | NewBitmapBuffer = ExAllocatePool2(POOL_FLAG_PAGED, NewBitsCount / 8, SEP_LOWBOX_SESSION_TAG); 1461 | 1462 | if (NewBitmapBuffer == NULL) 1463 | { 1464 | ExFreePool(Entry); 1465 | return STATUS_INSUFFICIENT_RESOURCES; 1466 | } 1467 | 1468 | //free the old buffer 1469 | ExFreePool(LowboxNumberMapping->Bitmap.Buffer); 1470 | 1471 | LowboxNumberMapping->Bitmap.SizeOfBitMap = NewBitsCount; 1472 | LowboxNumberMapping->Bitmap.Buffer = NewBitmapBuffer; 1473 | 1474 | RtlClearAllBits(&LowboxNumberMapping->Bitmap); 1475 | 1476 | //reset previous bits 1477 | RtlSetBits(&LowboxNumberMapping->Bitmap, 0, NewBitsCount / 2); 1478 | 1479 | BitStartingIndex = RtlFindClearBitsAndSet(&LowboxNumberMapping->Bitmap, 1, 0); 1480 | 1481 | //sorry what?? 1482 | 1483 | if (BitStartingIndex == 0xFFFFFFFF) 1484 | { 1485 | ExFreePool(Entry); 1486 | return STATUS_INSUFFICIENT_RESOURCES; 1487 | } 1488 | } 1489 | 1490 | if (BitStartingIndex >= MAX_LOWBOX_BITMAP_GROW_SIZE - 1) 1491 | { 1492 | ExFreePool(Entry); 1493 | return STATUS_INSUFFICIENT_RESOURCES; 1494 | } 1495 | 1496 | //insert new entry 1497 | 1498 | Entry->AtomTable = NULL; 1499 | Entry->LowboxNumber = BitStartingIndex + 1; 1500 | Entry->ReferenceCount = 1; 1501 | 1502 | HashTableSignature = SID_HASH_ULONG(PackageSid); 1503 | 1504 | if (HashTableSignature == 0) 1505 | { 1506 | HashTableSignature = 1; 1507 | } 1508 | 1509 | if (RtlInsertEntryHashTable(LowboxNumberMapping->HashTable, &Entry->HashEntry, HashTableSignature, NULL) == FALSE) 1510 | { 1511 | ExFreePool(Entry); 1512 | RtlClearBits(&LowboxNumberMapping->Bitmap, 1, BitStartingIndex); 1513 | return STATUS_INSUFFICIENT_RESOURCES; 1514 | } 1515 | 1516 | //Added reference to lowbox entry in 24h2, as it will be dereferenced again during token deletion in SepTokenDeleteMethod 1517 | 1518 | if (InterlockedIncrement64(&Entry->ReferenceCount) <= 1) 1519 | { 1520 | RtlFailFast(FAST_FAIL_INVALID_REFERENCE_COUNT); 1521 | } 1522 | //end 1523 | 1524 | *pLowboxNumberEntry = Entry; 1525 | return STATUS_SUCCESS; 1526 | } 1527 | #define GLOBAL_SESSION_LOWBOX_ARRAY_COUNT 5 1528 | 1529 | //SEP_LOWBOX_NUMBER_MAPPING g_SessionLowboxArray[GLOBAL_SESSION_LOWBOX_ARRAY_COUNT]; 1530 | 1531 | NTSTATUS SepSetTokenLowboxNumber(PTOKEN Token, PISID PackageSid) 1532 | { 1533 | ULONG SessionId = Token->SessionId; 1534 | BOOLEAN bLockedShared = FALSE; 1535 | BOOLEAN bLockedExclusive = FALSE; 1536 | NTSTATUS Status = STATUS_SUCCESS; 1537 | PSEP_LOWBOX_NUMBER_MAPPING LowboxNumberMapping = NULL; 1538 | PSEP_LOWBOX_NUMBER_ENTRY LowboxNumberEntry = NULL; 1539 | 1540 | if (SessionId < GLOBAL_SESSION_LOWBOX_ARRAY_COUNT) 1541 | { 1542 | LowboxNumberMapping = &((SEP_LOWBOX_NUMBER_MAPPING*)(KernelSymbols.g_SessionLowboxArray))[SessionId]; 1543 | } 1544 | else 1545 | { 1546 | KeEnterCriticalRegion(); 1547 | 1548 | ExAcquirePushLockShared((EX_PUSH_LOCK*)(KernelSymbols.LowboxSessionMapLock)); 1549 | 1550 | bLockedShared = TRUE; 1551 | 1552 | Status = SepGetTokenSessionMapEntry(SessionId, FALSE, &LowboxNumberMapping); 1553 | 1554 | if (!NT_SUCCESS(Status)) 1555 | { 1556 | if (Status != STATUS_NOT_FOUND) 1557 | { 1558 | ExReleasePushLockShared((EX_PUSH_LOCK*)(KernelSymbols.LowboxSessionMapLock)); 1559 | KeLeaveCriticalRegion(); 1560 | return Status; 1561 | } 1562 | 1563 | ExReleasePushLockShared((EX_PUSH_LOCK*)(KernelSymbols.LowboxSessionMapLock)); 1564 | KeLeaveCriticalRegion(); 1565 | 1566 | KeEnterCriticalRegion(); 1567 | 1568 | ExAcquirePushLockExclusive((EX_PUSH_LOCK*)(KernelSymbols.LowboxSessionMapLock)); 1569 | 1570 | Status = SepGetTokenSessionMapEntry(SessionId, TRUE, &LowboxNumberMapping); 1571 | 1572 | bLockedShared = FALSE; 1573 | bLockedExclusive = TRUE; 1574 | 1575 | if (!NT_SUCCESS(Status)) 1576 | { 1577 | ExReleasePushLockExclusive((EX_PUSH_LOCK*)(KernelSymbols.LowboxSessionMapLock)); 1578 | KeLeaveCriticalRegion(); 1579 | return Status; 1580 | } 1581 | } 1582 | } 1583 | 1584 | if (LowboxNumberMapping->Active == 0) 1585 | { 1586 | KeEnterCriticalRegion(); 1587 | ExAcquirePushLockExclusive(&LowboxNumberMapping->Lock); 1588 | if (LowboxNumberMapping->Active == 0) 1589 | { 1590 | Status = SepInitializeLowBoxNumberTable(LowboxNumberMapping); 1591 | } 1592 | 1593 | ExReleasePushLockExclusive(&LowboxNumberMapping->Lock); 1594 | KeLeaveCriticalRegion(); 1595 | } 1596 | 1597 | if (Status == STATUS_SUCCESS) 1598 | { 1599 | KeEnterCriticalRegion(); 1600 | ExAcquirePushLockExclusive(&LowboxNumberMapping->Lock); 1601 | 1602 | Status = SepGetLowBoxNumberEntry(LowboxNumberMapping, PackageSid, &LowboxNumberEntry); 1603 | 1604 | if (Status == STATUS_SUCCESS) 1605 | { 1606 | Token->LowboxNumberEntry = LowboxNumberEntry; 1607 | } 1608 | 1609 | ExReleasePushLockExclusive(&LowboxNumberMapping->Lock); 1610 | KeLeaveCriticalRegion(); 1611 | } 1612 | 1613 | if (bLockedExclusive) 1614 | { 1615 | ExReleasePushLockExclusive((EX_PUSH_LOCK*)(KernelSymbols.LowboxSessionMapLock)); 1616 | KeLeaveCriticalRegion(); 1617 | } 1618 | else if (bLockedShared) 1619 | { 1620 | ExReleasePushLockShared((EX_PUSH_LOCK*)(KernelSymbols.LowboxSessionMapLock)); 1621 | KeLeaveCriticalRegion(); 1622 | } 1623 | 1624 | return Status; 1625 | } 1626 | NTSTATUS SepReferenceCachedTokenHandles(ULONG HandleCount , HANDLE* Handles , HANDLE* NewHandles) 1627 | { 1628 | NTSTATUS status; 1629 | ULONG i; 1630 | 1631 | status = STATUS_SUCCESS; 1632 | 1633 | for (i = 0 ; i < HandleCount ; i++) 1634 | { 1635 | status = ZwDuplicateObject(NtCurrentProcess(), Handles[i], NtCurrentProcess(), &NewHandles[i], 0, OBJ_KERNEL_HANDLE, DUPLICATE_SAME_ACCESS); 1636 | 1637 | if (!NT_SUCCESS(status)) 1638 | { 1639 | break; 1640 | } 1641 | } 1642 | 1643 | if (i == HandleCount) 1644 | { 1645 | return status; 1646 | } 1647 | 1648 | for (; i != 0; i--) 1649 | { 1650 | ZwClose(NewHandles[i]); 1651 | } 1652 | 1653 | return status; 1654 | } 1655 | 1656 | NTSTATUS SepQueryNameString(PVOID Object , POBJECT_NAME_INFORMATION* ObjectNameInfo) 1657 | { 1658 | NTSTATUS Status; 1659 | POBJECT_NAME_INFORMATION NameInfo; 1660 | ULONG ReturnLength = 0; 1661 | 1662 | *ObjectNameInfo = NULL; 1663 | 1664 | Status = ObQueryNameString(Object, NULL, 0, &ReturnLength); 1665 | 1666 | if (Status == STATUS_INFO_LENGTH_MISMATCH || Status == STATUS_BUFFER_TOO_SMALL) 1667 | { 1668 | NameInfo = (POBJECT_NAME_INFORMATION)ExAllocatePool2(POOL_FLAG_PAGED, ReturnLength, SEP_OBJECT_NAME_INFORMATION_TAG); 1669 | 1670 | *ObjectNameInfo = NameInfo; 1671 | 1672 | if (NameInfo) 1673 | { 1674 | Status = ObQueryNameString(Object, NameInfo, ReturnLength, &ReturnLength); 1675 | 1676 | if (!NT_SUCCESS(Status) || NameInfo->Name.Length == 0) 1677 | { 1678 | ExFreePool(NameInfo); 1679 | 1680 | *ObjectNameInfo = NULL; 1681 | 1682 | if (NT_SUCCESS(Status) && ObGetObjectType(Object) == *PsProcessType) 1683 | { 1684 | SeLocateProcessImageName((PEPROCESS)Object,(PUNICODE_STRING*)ObjectNameInfo); 1685 | } 1686 | return STATUS_SUCCESS; 1687 | } 1688 | } 1689 | else 1690 | { 1691 | return STATUS_INSUFFICIENT_RESOURCES; 1692 | } 1693 | } 1694 | return Status; 1695 | } 1696 | 1697 | NTSTATUS RtlGetAppContainerParent(PSID PackageSID , PISID* ParentSID) 1698 | { 1699 | PISID ParentSid; 1700 | NTSTATUS status; 1701 | ULONG i; 1702 | APPCONTAINER_SID_TYPE SidType; 1703 | 1704 | *ParentSID = NULL; 1705 | SidType = 0; 1706 | 1707 | if (!NT_SUCCESS(RtlGetAppContainerSidType(PackageSID, &SidType)) || SidType != ChildAppContainerSidType) 1708 | { 1709 | return STATUS_INVALID_PARAMETER; 1710 | } 1711 | 1712 | ParentSid = (PISID)ExAllocatePool2(POOL_FLAG_NON_PAGED | POOL_FLAG_USE_QUOTA, RtlLengthRequiredSid(SECURITY_PARENT_PACKAGE_RID_COUNT), RTL_PRIVATE_BUFFER_TAG); 1713 | 1714 | if (ParentSid == NULL) 1715 | { 1716 | return STATUS_INSUFFICIENT_RESOURCES; 1717 | } 1718 | 1719 | status = RtlInitializeSid(ParentSid, &RtlpAppPackageAuthority, SECURITY_PARENT_PACKAGE_RID_COUNT); 1720 | 1721 | if (!NT_SUCCESS(status)) 1722 | { 1723 | ExFreePool(ParentSid); 1724 | return status ; 1725 | } 1726 | 1727 | for (i = 0; i < SECURITY_PARENT_PACKAGE_RID_COUNT; i++) 1728 | { 1729 | ParentSid->SubAuthority[i] = *RtlSubAuthoritySid(PackageSID, i); 1730 | } 1731 | 1732 | *ParentSID = ParentSid; 1733 | 1734 | return status; 1735 | } 1736 | 1737 | 1738 | UNICODE_STRING AllowedCachedObjectNames[] = { 1739 | RTL_CONSTANT_STRING(L"Local"), 1740 | RTL_CONSTANT_STRING(L"Global"), 1741 | RTL_CONSTANT_STRING(L"RPC Control"), 1742 | RTL_CONSTANT_STRING(L"Session"), 1743 | RTL_CONSTANT_STRING(L"AppContainerNamedObjects") 1744 | }; 1745 | 1746 | NTSTATUS SepValidateReferencedCachedHandles( 1747 | PTOKEN Token, 1748 | SEP_CACHED_HANDLES_ENTRY_DESCRIPTOR* EntryDescriptor, 1749 | ULONG HandleCount, 1750 | HANDLE* NewHandles) 1751 | { 1752 | NTSTATUS status = STATUS_SUCCESS; 1753 | PVOID Object = NULL; 1754 | ULONG AllowedDirectoryCount = 0; 1755 | POBJECT_TYPE ObjectType; 1756 | ULONG j; 1757 | BOOLEAN bValid ; 1758 | BOOLEAN bSidNameAllocated = FALSE; 1759 | PSID ParentSID; 1760 | APPCONTAINER_SID_TYPE SidType = 0; 1761 | ULONG i; 1762 | POBJECT_NAME_INFORMATION NameInfo = NULL; 1763 | PCUNICODE_STRING pPrefixName = NULL; 1764 | UNICODE_STRING ObjectName; 1765 | UNICODE_STRING SidName = { 0, 0 , NULL }; 1766 | UNICODE_STRING HeaderObjectName; 1767 | POBJECT_HEADER_NAME_INFO HeaderNameInfo; 1768 | ALLOWED_CACHED_DIRECTORY AllowedDirectories[2]; 1769 | WCHAR AllowedPath1[256]; 1770 | WCHAR ChildSidName[256]; 1771 | 1772 | if (EntryDescriptor->DescriptorType == SepCachedHandlesEntryBnoIsolation) 1773 | { 1774 | pPrefixName = &EntryDescriptor->u1.IsolationPrefix; 1775 | 1776 | status = RtlStringCchPrintfW(AllowedPath1, MAX_OBJECT_PATH , L"\\Sessions\\%d", Token->SessionId); 1777 | 1778 | if (!NT_SUCCESS(status)) 1779 | { 1780 | goto Exit; 1781 | } 1782 | 1783 | RtlInitUnicodeString(&AllowedDirectories[0].DirectoryName, AllowedPath1); 1784 | 1785 | AllowedDirectories[0].bCheckName = TRUE; 1786 | AllowedDirectoryCount = 1; 1787 | 1788 | if (Token->SessionId == RtlGetCurrentServiceSessionId()) 1789 | { 1790 | RtlInitUnicodeString(&AllowedDirectories[1].DirectoryName, L"\\BaseNamedObjects"); 1791 | AllowedDirectories[1].bCheckName = TRUE; 1792 | AllowedDirectoryCount = 2; 1793 | } 1794 | } 1795 | else if (EntryDescriptor->DescriptorType == SepCachedHandlesEntryLowbox) 1796 | { 1797 | status = RtlGetAppContainerSidType(EntryDescriptor->u1.PackageSid, &SidType); 1798 | 1799 | if (!NT_SUCCESS(status)) 1800 | { 1801 | goto Exit; 1802 | } 1803 | 1804 | if (SidType == ParentAppContainerSidType) 1805 | { 1806 | status = RtlConvertSidToUnicodeString(&SidName, EntryDescriptor->u1.PackageSid, TRUE); 1807 | 1808 | if (!NT_SUCCESS(status)) 1809 | { 1810 | goto Exit; 1811 | } 1812 | 1813 | bSidNameAllocated = TRUE; 1814 | } 1815 | else 1816 | { 1817 | status = RtlStringCchPrintfW(ChildSidName, 1818 | MAX_OBJECT_PATH, 1819 | L"%u-%u-%u-%u", 1820 | *RtlSubAuthoritySid(EntryDescriptor->u1.PackageSid, SECURITY_CHILD_PACKAGE_RID_COUNT - 4), 1821 | *RtlSubAuthoritySid(EntryDescriptor->u1.PackageSid, SECURITY_CHILD_PACKAGE_RID_COUNT - 3), 1822 | *RtlSubAuthoritySid(EntryDescriptor->u1.PackageSid, SECURITY_CHILD_PACKAGE_RID_COUNT - 2), 1823 | *RtlSubAuthoritySid(EntryDescriptor->u1.PackageSid, SECURITY_CHILD_PACKAGE_RID_COUNT - 1)); 1824 | 1825 | if (!NT_SUCCESS(status)) 1826 | { 1827 | goto Exit; 1828 | } 1829 | 1830 | RtlInitUnicodeString(&SidName, ChildSidName); 1831 | } 1832 | 1833 | pPrefixName = &SidName; 1834 | 1835 | status = RtlStringCchPrintfW(AllowedPath1, MAX_OBJECT_PATH, L"\\Sessions\\%d", Token->SessionId); 1836 | 1837 | if (!NT_SUCCESS(status)) 1838 | { 1839 | goto Exit; 1840 | } 1841 | 1842 | 1843 | RtlInitUnicodeString(&AllowedDirectories[0].DirectoryName, AllowedPath1); 1844 | 1845 | AllowedDirectories[0].bCheckName = TRUE; 1846 | 1847 | RtlInitUnicodeString(&AllowedDirectories[1].DirectoryName, L"\\Device\\NamedPipe"); 1848 | 1849 | AllowedDirectories[1].bCheckName = FALSE; 1850 | 1851 | AllowedDirectoryCount = 2; 1852 | } 1853 | 1854 | //For subsequent descriptor categorizations, execution continues without an explicit return. 1855 | //While not ideal, this is presently acceptable as the function has only two caller types in its invocation chain for now. 1856 | 1857 | 1858 | for (i = 0; i < HandleCount; i++) 1859 | { 1860 | if (Object) 1861 | { 1862 | ObDereferenceObject(Object); 1863 | } 1864 | 1865 | Object = NULL; 1866 | 1867 | status = ObReferenceObjectByHandle(NewHandles[i], 0, NULL, KernelMode, &Object, NULL); 1868 | 1869 | if (!NT_SUCCESS(status)) 1870 | { 1871 | continue; 1872 | } 1873 | 1874 | ObjectType = ObGetObjectType(Object); 1875 | 1876 | if (ObjectType != ObpSymbolicLinkObjectType && 1877 | ObjectType != ObpDirectoryObjectType && 1878 | (ObjectType != *IoFileObjectType || ((PFILE_OBJECT)Object)->DeviceObject->DeviceType != FILE_DEVICE_NAMED_PIPE )) 1879 | { 1880 | status = STATUS_INVALID_PARAMETER; 1881 | break; 1882 | } 1883 | 1884 | if (NameInfo) 1885 | { 1886 | ExFreePool(NameInfo); 1887 | NameInfo = NULL; 1888 | } 1889 | 1890 | status = SepQueryNameString(Object, &NameInfo); 1891 | 1892 | if (!NT_SUCCESS(status)) 1893 | { 1894 | break; 1895 | } 1896 | 1897 | if (NameInfo == NULL || NameInfo->Name.MaximumLength == 0) 1898 | { 1899 | status = STATUS_INVALID_PARAMETER; 1900 | break; 1901 | } 1902 | 1903 | ObjectName = NameInfo->Name; 1904 | 1905 | for (j = 0; j < AllowedDirectoryCount; j++) 1906 | { 1907 | if (RtlPrefixUnicodeString(&AllowedDirectories[j].DirectoryName, &ObjectName, TRUE)) 1908 | { 1909 | break; 1910 | } 1911 | } 1912 | 1913 | if (j == AllowedDirectoryCount) 1914 | { 1915 | status = STATUS_INVALID_PARAMETER; 1916 | break; 1917 | } 1918 | 1919 | if (AllowedDirectories[j].bCheckName) 1920 | { 1921 | HeaderNameInfo = ObQueryNameInfo(Object); 1922 | 1923 | if (HeaderNameInfo == NULL || HeaderNameInfo->Name.MaximumLength == 0) 1924 | { 1925 | status = STATUS_INVALID_PARAMETER; 1926 | break; 1927 | } 1928 | 1929 | HeaderObjectName = HeaderNameInfo->Name; 1930 | 1931 | //Check object prefix name white list 1932 | 1933 | if (RtlEqualUnicodeString(&HeaderObjectName, pPrefixName, TRUE) == FALSE) 1934 | { 1935 | //Check object name white list 1936 | 1937 | for (j = 0; j < ARRAYSIZE(AllowedCachedObjectNames); j++) 1938 | { 1939 | if (RtlEqualUnicodeString(&HeaderObjectName, &AllowedCachedObjectNames[j], TRUE)) 1940 | { 1941 | break; 1942 | } 1943 | } 1944 | 1945 | if (j != ARRAYSIZE(AllowedCachedObjectNames)) 1946 | { 1947 | continue; 1948 | } 1949 | 1950 | //white list, object name = SID ? 1951 | 1952 | if (SidType != ChildAppContainerSidType) 1953 | { 1954 | status = STATUS_INVALID_PARAMETER; 1955 | break; 1956 | } 1957 | 1958 | ParentSID = NULL; 1959 | 1960 | if (!NT_SUCCESS(RtlGetAppContainerParent(EntryDescriptor->u1.PackageSid, (PISID*)&ParentSID))) 1961 | { 1962 | status = STATUS_INVALID_PARAMETER; 1963 | break; 1964 | } 1965 | 1966 | ObjectName.Buffer = NULL; 1967 | ObjectName.Length = 0; 1968 | ObjectName.MaximumLength = 0; 1969 | 1970 | if (!NT_SUCCESS(RtlConvertSidToUnicodeString(&ObjectName, ParentSID, TRUE))) 1971 | { 1972 | status = STATUS_INVALID_PARAMETER; 1973 | break; 1974 | 1975 | } 1976 | 1977 | bValid = (RtlEqualUnicodeString(&HeaderObjectName, &ObjectName, TRUE) == TRUE); 1978 | 1979 | RtlFreeUnicodeString(&ObjectName); 1980 | 1981 | ExFreePool(ParentSID); 1982 | 1983 | if (bValid == FALSE) 1984 | { 1985 | status = STATUS_INVALID_PARAMETER; 1986 | break; 1987 | } 1988 | } 1989 | } 1990 | } 1991 | 1992 | Exit: 1993 | if (NameInfo) 1994 | { 1995 | ExFreePool(NameInfo); 1996 | } 1997 | 1998 | if (Object) 1999 | { 2000 | ObDereferenceObject(Object); 2001 | } 2002 | 2003 | if (bSidNameAllocated) 2004 | { 2005 | RtlFreeUnicodeString(&SidName); 2006 | } 2007 | 2008 | return status; 2009 | } 2010 | 2011 | NTSTATUS SepCloseCachedTokenHandles(ULONG HandleCount, HANDLE* Handles) 2012 | { 2013 | NTSTATUS status = STATUS_SUCCESS; 2014 | ULONG i; 2015 | 2016 | for (i = 0; i < HandleCount; i++) 2017 | { 2018 | status = ZwClose(Handles[i]); 2019 | } 2020 | return status; 2021 | } 2022 | 2023 | NTSTATUS SepAllocateAndInitializeCachedHandleEntry( PSEP_CACHED_HANDLES_ENTRY_DESCRIPTOR EntryDescriptor, PSEP_CACHED_HANDLES_ENTRY* HandlesEntryReturn) 2024 | { 2025 | ULONG RequiredLength; 2026 | PSEP_CACHED_HANDLES_ENTRY Entry; 2027 | 2028 | *HandlesEntryReturn = NULL; 2029 | RequiredLength = sizeof(SEP_CACHED_HANDLES_ENTRY); 2030 | 2031 | if (EntryDescriptor->DescriptorType == SepCachedHandlesEntryLowbox) 2032 | { 2033 | RequiredLength = RtlLengthRequiredSid(((PISID)EntryDescriptor->u1.PackageSid)->SubAuthorityCount) + sizeof(SEP_CACHED_HANDLES_ENTRY); 2034 | } 2035 | else if (EntryDescriptor->DescriptorType == SepCachedHandlesEntryBnoIsolation) 2036 | { 2037 | RequiredLength = EntryDescriptor->u1.IsolationPrefix.MaximumLength + sizeof(SEP_CACHED_HANDLES_ENTRY); 2038 | } 2039 | 2040 | Entry = (PSEP_CACHED_HANDLES_ENTRY)ExAllocatePool2(POOL_FLAG_PAGED, LongAlignSize(RequiredLength), 'sLeS'); 2041 | 2042 | if (Entry == NULL) 2043 | { 2044 | return STATUS_INSUFFICIENT_RESOURCES; 2045 | } 2046 | 2047 | 2048 | Entry->Handles = NULL; 2049 | Entry->HandleCount = 0; 2050 | Entry->ReferenceCount = 1; 2051 | Entry->EntryDescriptor.DescriptorType = EntryDescriptor->DescriptorType; 2052 | 2053 | if (EntryDescriptor->DescriptorType == SepCachedHandlesEntryLowbox) 2054 | { 2055 | Entry->EntryDescriptor.u1.PackageSid = (PSID)((ULONG_PTR)Entry + sizeof(SEP_CACHED_HANDLES_ENTRY)); 2056 | RtlCopySid(RtlLengthRequiredSid(((PISID)EntryDescriptor->u1.PackageSid)->SubAuthorityCount), 2057 | (PSID)((ULONG_PTR)Entry + sizeof(SEP_CACHED_HANDLES_ENTRY)), 2058 | EntryDescriptor->u1.PackageSid); 2059 | } 2060 | else 2061 | { 2062 | if (EntryDescriptor->DescriptorType == SepCachedHandlesEntryBnoIsolation) 2063 | { 2064 | Entry->EntryDescriptor.u1.IsolationPrefix.Length = EntryDescriptor->u1.IsolationPrefix.Length; 2065 | Entry->EntryDescriptor.u1.IsolationPrefix.MaximumLength = EntryDescriptor->u1.IsolationPrefix.MaximumLength; 2066 | Entry->EntryDescriptor.u1.IsolationPrefix.Buffer = (WCHAR*)((ULONG_PTR)Entry + sizeof(SEP_CACHED_HANDLES_ENTRY)); 2067 | 2068 | RtlCopyUnicodeString(&Entry->EntryDescriptor.u1.IsolationPrefix, &EntryDescriptor->u1.IsolationPrefix); 2069 | 2070 | } 2071 | 2072 | } 2073 | 2074 | *HandlesEntryReturn = Entry; 2075 | return STATUS_SUCCESS; 2076 | } 2077 | ULONG SepComputeCachedHandlesEntrySignature(PSEP_CACHED_HANDLES_ENTRY_DESCRIPTOR EntryDescriptor) 2078 | { 2079 | ULONG HashValue; 2080 | 2081 | if (EntryDescriptor->DescriptorType == SepCachedHandlesEntryBnoIsolation) 2082 | { 2083 | RtlHashUnicodeString(&EntryDescriptor->u1.IsolationPrefix, TRUE, HASH_STRING_ALGORITHM_DEFAULT, &HashValue); 2084 | } 2085 | else if (EntryDescriptor->DescriptorType == SepCachedHandlesEntryLowbox) 2086 | { 2087 | HashValue = SID_HASH_ULONG(EntryDescriptor->u1.PackageSid); 2088 | 2089 | if (HashValue == 0) 2090 | { 2091 | HashValue = 1; 2092 | } 2093 | 2094 | return HashValue; 2095 | } 2096 | 2097 | return 0; 2098 | } 2099 | NTSTATUS SepFindMatchingCachedHandlesEntry(PRTL_DYNAMIC_HASH_TABLE HashTable, ULONG Signature, PSEP_CACHED_HANDLES_ENTRY_DESCRIPTOR EntryDescriptor, PSEP_CACHED_HANDLES_ENTRY* Entry) 2100 | { 2101 | struct _RTL_DYNAMIC_HASH_TABLE_CONTEXT Context = { 0 }; 2102 | BOOLEAN bFound = FALSE; 2103 | PRTL_DYNAMIC_HASH_TABLE_ENTRY i; 2104 | PSEP_CACHED_HANDLES_ENTRY HandlesEntry = NULL ; 2105 | 2106 | for (i = RtlLookupEntryHashTable(HashTable, Signature, &Context); i; i = RtlGetNextEntryHashTable(HashTable, &Context)) 2107 | { 2108 | HandlesEntry = CONTAINING_RECORD(i, SEP_CACHED_HANDLES_ENTRY, HashEntry); 2109 | 2110 | if (EntryDescriptor->DescriptorType == HandlesEntry->EntryDescriptor.DescriptorType) 2111 | { 2112 | if (EntryDescriptor->DescriptorType == SepCachedHandlesEntryLowbox) 2113 | { 2114 | if (RtlEqualSid(EntryDescriptor->u1.PackageSid, HandlesEntry->EntryDescriptor.u1.PackageSid)) 2115 | { 2116 | bFound = TRUE; 2117 | break; 2118 | } 2119 | } 2120 | else if (EntryDescriptor->DescriptorType == SepCachedHandlesEntryBnoIsolation) 2121 | { 2122 | if (RtlEqualUnicodeString(&EntryDescriptor->u1.IsolationPrefix, &HandlesEntry->EntryDescriptor.u1.IsolationPrefix, TRUE) == TRUE) 2123 | { 2124 | bFound = TRUE; 2125 | break; 2126 | } 2127 | } 2128 | } 2129 | } 2130 | 2131 | if (bFound) 2132 | { 2133 | *Entry = HandlesEntry; 2134 | } 2135 | else 2136 | { 2137 | *Entry = NULL; 2138 | } 2139 | 2140 | return STATUS_SUCCESS; 2141 | 2142 | } 2143 | NTSTATUS SepGetCachedHandlesEntry(PSEP_CACHED_HANDLES_TABLE HandleTable, 2144 | PSEP_CACHED_HANDLES_ENTRY_DESCRIPTOR EntryDescriptor, 2145 | BOOLEAN* bReferenced, 2146 | PSEP_CACHED_HANDLES_ENTRY* EntryReturned) 2147 | { 2148 | struct _RTL_DYNAMIC_HASH_TABLE* HashTable = HandleTable->HashTable; 2149 | NTSTATUS Status; 2150 | ULONG HashValue = 0 ; 2151 | PSEP_CACHED_HANDLES_ENTRY HandlesEntry = NULL; 2152 | 2153 | HashValue = SepComputeCachedHandlesEntrySignature(EntryDescriptor); 2154 | 2155 | *bReferenced = FALSE; 2156 | 2157 | HandlesEntry = NULL; 2158 | 2159 | SepFindMatchingCachedHandlesEntry(HashTable, HashValue, EntryDescriptor, &HandlesEntry); 2160 | 2161 | 2162 | if (HandlesEntry) 2163 | { 2164 | if (InterlockedIncrement64(&HandlesEntry->ReferenceCount) <= 1) 2165 | { 2166 | RtlFailFast(FAST_FAIL_INVALID_REFERENCE_COUNT); 2167 | //never return 2168 | } 2169 | *EntryReturned = HandlesEntry; 2170 | *bReferenced = TRUE; 2171 | return STATUS_SUCCESS; 2172 | } 2173 | 2174 | Status = SepAllocateAndInitializeCachedHandleEntry(EntryDescriptor, &HandlesEntry); 2175 | 2176 | if (!NT_SUCCESS(Status)) 2177 | { 2178 | return Status; 2179 | } 2180 | 2181 | if (RtlInsertEntryHashTable(HashTable, &HandlesEntry->HashEntry, HashValue, NULL) == FALSE) 2182 | { 2183 | ExFreePool(HandlesEntry); 2184 | return STATUS_INSUFFICIENT_RESOURCES; 2185 | } 2186 | 2187 | *EntryReturned = HandlesEntry; 2188 | 2189 | return STATUS_SUCCESS; 2190 | 2191 | } 2192 | 2193 | 2194 | NTSTATUS SepSetTokenCachedHandles(PTOKEN Token, SEP_CACHED_HANDLES_ENTRY_DESCRIPTOR* EntryDescriptor, ULONG HandleCount, HANDLE* Handles) 2195 | { 2196 | HANDLE* NewHandles = NULL; 2197 | BOOLEAN bHandleDuplicated = FALSE; 2198 | NTSTATUS Status; 2199 | SEP_CACHED_HANDLES_TABLE* SessionCachedHandlesTable; 2200 | BOOLEAN bAddHandleTable; 2201 | PSEP_CACHED_HANDLES_ENTRY Entry = NULL; 2202 | BOOLEAN bReferenced = FALSE; 2203 | 2204 | if (HandleCount) 2205 | { 2206 | NewHandles = (HANDLE*)ExAllocatePool2(POOL_FLAG_PAGED, sizeof(HANDLE) * HandleCount, 'cHeS'); 2207 | 2208 | if (NewHandles == NULL) 2209 | { 2210 | return STATUS_NO_MEMORY; 2211 | } 2212 | 2213 | Status = SepReferenceCachedTokenHandles(HandleCount, Handles, NewHandles); 2214 | 2215 | if (!NT_SUCCESS(Status)) 2216 | { 2217 | ExFreePool(NewHandles); 2218 | return Status; 2219 | } 2220 | 2221 | bHandleDuplicated = TRUE; 2222 | 2223 | Status = SepValidateReferencedCachedHandles(Token, EntryDescriptor, HandleCount, NewHandles); 2224 | 2225 | if (!NT_SUCCESS(Status)) 2226 | { 2227 | SepCloseCachedTokenHandles(HandleCount, NewHandles); 2228 | ExFreePool(NewHandles); 2229 | return Status; 2230 | } 2231 | } 2232 | 2233 | KeEnterCriticalRegion(); 2234 | SessionCachedHandlesTable = &Token->LogonSession->CachedHandlesTable; 2235 | 2236 | ExAcquirePushLockExclusive(&SessionCachedHandlesTable->Lock); 2237 | 2238 | 2239 | if (SessionCachedHandlesTable->HashTable == NULL) 2240 | { 2241 | if (RtlCreateHashTable(&SessionCachedHandlesTable->HashTable, 0, 0) == FALSE) 2242 | { 2243 | Status = STATUS_INSUFFICIENT_RESOURCES; 2244 | goto Exit; 2245 | } 2246 | } 2247 | 2248 | Status = SepGetCachedHandlesEntry(SessionCachedHandlesTable, EntryDescriptor, &bReferenced, &Entry); 2249 | 2250 | if (Status != STATUS_SUCCESS) 2251 | { 2252 | goto Exit; 2253 | } 2254 | 2255 | 2256 | bAddHandleTable = FALSE; 2257 | 2258 | if (EntryDescriptor->DescriptorType == SepCachedHandlesEntryLowbox) 2259 | { 2260 | Token->LowboxHandlesEntry = Entry; 2261 | if (HandleCount && Entry->HandleCount == 0) 2262 | { 2263 | bAddHandleTable = TRUE; 2264 | } 2265 | } 2266 | else if (EntryDescriptor->DescriptorType == SepCachedHandlesEntryBnoIsolation) 2267 | { 2268 | Token->BnoIsolationHandlesEntry = Entry; 2269 | 2270 | if (bReferenced == FALSE) 2271 | { 2272 | bAddHandleTable = TRUE; 2273 | } 2274 | } 2275 | 2276 | if (bAddHandleTable) 2277 | { 2278 | Entry->HandleCount = HandleCount; 2279 | Entry->Handles = (PVOID)NewHandles; 2280 | } 2281 | 2282 | bHandleDuplicated = FALSE; 2283 | 2284 | NewHandles = NULL; 2285 | 2286 | Exit: 2287 | ExReleasePushLockExclusive(&SessionCachedHandlesTable->Lock); 2288 | KeLeaveCriticalRegion(); 2289 | 2290 | if (NewHandles) 2291 | { 2292 | if (bHandleDuplicated) 2293 | { 2294 | SepCloseCachedTokenHandles(HandleCount, NewHandles); 2295 | } 2296 | 2297 | ExFreePool(NewHandles); 2298 | } 2299 | 2300 | return Status; 2301 | } 2302 | 2303 | NTSTATUS SepSetTokenPackage(PTOKEN Token , PISID PackageSid) 2304 | { 2305 | ULONG SidLength; 2306 | PSID NewSid; 2307 | 2308 | if (Token->Package && RtlIsParentOfChildAppContainer(Token->Package, PackageSid) == FALSE) 2309 | { 2310 | return STATUS_ACCESS_DENIED; 2311 | } 2312 | 2313 | SidLength = LongAlignSize(SeLengthSid(PackageSid)); 2314 | 2315 | NewSid = (PSID)ExAllocatePool2(POOL_FLAG_PAGED, SidLength, SEP_SID_TAG); 2316 | 2317 | 2318 | if (NewSid == NULL) 2319 | { 2320 | return STATUS_INSUFFICIENT_RESOURCES; 2321 | } 2322 | 2323 | RtlCopySid(SidLength , NewSid , PackageSid); 2324 | 2325 | if (Token->Package) 2326 | { 2327 | ExFreePool(Token->Package); 2328 | } 2329 | 2330 | Token->Package = NewSid; 2331 | 2332 | return STATUS_SUCCESS; 2333 | } 2334 | 2335 | PACE_HEADER RtlFindAceBySid(PACL pAcl, PSID pSid, PULONG pIndex) 2336 | { 2337 | ULONG i; 2338 | PACE_HEADER pAce; 2339 | PSID AceSid; 2340 | 2341 | if (pAcl == NULL) 2342 | { 2343 | return NULL; 2344 | } 2345 | 2346 | for (i = 0, pAce = FirstAce(pAcl); i < pAcl->AceCount; i++, pAce = NextAce(pAce)) 2347 | { 2348 | if (IsAllowedAceType(pAce)) 2349 | { 2350 | AceSid = (PSID) & (((PACCESS_ALLOWED_ACE)pAce)->SidStart); 2351 | } 2352 | else if (IsCompoundAceType(pAce)) 2353 | { 2354 | AceSid = (PSID) & (((PKNOWN_COMPOUND_ACE)pAce)->SidStart); 2355 | } 2356 | else if (IsObjectAceType(pAce) || IsCallbackObjectAceType(pAce) || IsSytstemCallbackObjectAceType(pAce)) 2357 | { 2358 | AceSid = RtlObjectAceSid(pAce); 2359 | } 2360 | else 2361 | { 2362 | AceSid = NULL; 2363 | } 2364 | 2365 | if (AceSid) 2366 | { 2367 | if (pIndex == NULL) 2368 | { 2369 | if (RtlEqualSid(AceSid, pSid)) 2370 | { 2371 | return pAce; 2372 | } 2373 | } 2374 | else 2375 | { 2376 | if (i >= *pIndex && RtlEqualSid(AceSid, pSid)) 2377 | { 2378 | *pIndex = i; 2379 | return pAce; 2380 | } 2381 | } 2382 | } 2383 | } 2384 | 2385 | return NULL; 2386 | } 2387 | 2388 | NTSTATUS SepExpandDynamic(PTOKEN Token, ULONG NewLength) 2389 | { 2390 | ULONG CurrentSize; 2391 | PVOID NewDynamic; 2392 | PVOID DynamicPart; 2393 | 2394 | CurrentSize = Token->DynamicAvailable + SeLengthSid(Token->PrimaryGroup); 2395 | 2396 | if (Token->DefaultDacl) 2397 | { 2398 | CurrentSize += Token->DefaultDacl->AclSize; 2399 | } 2400 | 2401 | if (NewLength <= CurrentSize) 2402 | { 2403 | STATUS_SUCCESS; 2404 | } 2405 | 2406 | NewDynamic = ExAllocatePool2(POOL_FLAG_PAGED, NewLength, SEP_TOKEN_DYNAMIC_PART_TAG); 2407 | 2408 | if (NewDynamic == NULL) 2409 | { 2410 | return STATUS_INSUFFICIENT_RESOURCES; 2411 | } 2412 | 2413 | DynamicPart = Token->DynamicPart; 2414 | 2415 | RtlCopyMemory(NewDynamic, DynamicPart, CurrentSize); 2416 | 2417 | Token->DynamicAvailable += NewLength - CurrentSize; 2418 | Token->DynamicPart = NewDynamic; 2419 | 2420 | if (Token->DefaultDacl) 2421 | { 2422 | Token->DefaultDacl = (PACL)((PUCHAR)NewDynamic + ((PUCHAR)Token->DefaultDacl - (PUCHAR)DynamicPart)); 2423 | } 2424 | 2425 | Token->PrimaryGroup = (PSID)((PUCHAR)NewDynamic + ((PUCHAR)Token->PrimaryGroup - (PUCHAR)DynamicPart)); 2426 | 2427 | ExFreePool(DynamicPart); 2428 | 2429 | return STATUS_SUCCESS; 2430 | 2431 | } 2432 | 2433 | VOID SepFreeDefaultDacl(PTOKEN Token) 2434 | { 2435 | if (Token->DefaultDacl) 2436 | { 2437 | Token->DynamicAvailable += Token->DefaultDacl->AclSize; 2438 | Token->DefaultDacl = NULL; 2439 | } 2440 | 2441 | if (Token->DynamicPart != (PULONG)Token->PrimaryGroup) 2442 | { 2443 | RtlMoveMemory((PVOID)(Token->DynamicPart), (PVOID)(Token->PrimaryGroup), SeLengthSid(Token->PrimaryGroup)); 2444 | 2445 | Token->PrimaryGroup = (PSID)Token->DynamicPart; 2446 | } 2447 | 2448 | return; 2449 | } 2450 | 2451 | VOID SepAppendDefaultDacl(PTOKEN Token, PACL NewAcl) 2452 | { 2453 | RtlCopyMemory((PVOID)((ULONG_PTR)(Token->DynamicPart) + SeLengthSid(Token->PrimaryGroup)), (PVOID)NewAcl, NewAcl->AclSize); 2454 | 2455 | Token->DynamicAvailable -= NewAcl->AclSize; 2456 | Token->DefaultDacl = (PACL)(PVOID)((ULONG_PTR)(Token->DynamicPart) + SeLengthSid(Token->PrimaryGroup)); 2457 | return; 2458 | } 2459 | 2460 | NTSTATUS SepAppendAceToTokenDefaultDacl(PTOKEN Token, PISID PackageSid) 2461 | { 2462 | PACL DefaultAcl; 2463 | NTSTATUS Status; 2464 | ULONG LengthRequired; 2465 | PACL NewAcl = NULL; 2466 | ACL_REVISION_INFORMATION AclRevision = { 0 }; 2467 | PVOID Ace = NULL; 2468 | ACL_SIZE_INFORMATION AclSize = { 0 , 0 , 0 }; 2469 | 2470 | DefaultAcl = Token->DefaultDacl; 2471 | 2472 | if (DefaultAcl == NULL || RtlFindAceBySid(DefaultAcl, PackageSid, NULL)) 2473 | { 2474 | return STATUS_SUCCESS; 2475 | } 2476 | else 2477 | { 2478 | Status = RtlQueryInformationAcl(DefaultAcl, &AclRevision, sizeof(ACL_REVISION_INFORMATION), AclRevisionInformation); 2479 | 2480 | if (!NT_SUCCESS(Status)) 2481 | { 2482 | return Status; 2483 | } 2484 | 2485 | Status = RtlQueryInformationAcl(DefaultAcl, &AclSize, sizeof(ACL_SIZE_INFORMATION), AclSizeInformation); 2486 | 2487 | if (!NT_SUCCESS(Status)) 2488 | { 2489 | return Status; 2490 | } 2491 | 2492 | 2493 | LengthRequired = LongAlignSize(DefaultAcl->AclSize + SeLengthSid(PackageSid) + sizeof(ACL)); 2494 | 2495 | 2496 | NewAcl = (PACL)ExAllocatePool2(POOL_FLAG_PAGED , LengthRequired , SEP_ACL_TAG); 2497 | 2498 | if (NewAcl == NULL) 2499 | { 2500 | return STATUS_INSUFFICIENT_RESOURCES; 2501 | } 2502 | 2503 | Status = RtlCreateAcl(NewAcl, LengthRequired, AclRevision.AclRevision); 2504 | 2505 | if (!NT_SUCCESS(Status)) 2506 | { 2507 | ExFreePool(NewAcl); 2508 | return Status; 2509 | } 2510 | 2511 | Status = RtlGetAce(DefaultAcl, 0, &Ace); 2512 | 2513 | if (!NT_SUCCESS(Status)) 2514 | { 2515 | ExFreePool(NewAcl); 2516 | return Status; 2517 | } 2518 | 2519 | Status = RtlAddAce(NewAcl, AclRevision.AclRevision, 0, Ace, AclSize.AclBytesInUse - sizeof(ACL)); 2520 | 2521 | if (!NT_SUCCESS(Status)) 2522 | { 2523 | ExFreePool(NewAcl); 2524 | return Status; 2525 | } 2526 | 2527 | Status = RtlAddAccessAllowedAce(NewAcl, AclRevision.AclRevision, GENERIC_ALL, PackageSid); 2528 | 2529 | 2530 | if (!NT_SUCCESS(Status)) 2531 | { 2532 | ExFreePool(NewAcl); 2533 | return Status; 2534 | } 2535 | 2536 | Status = SepExpandDynamic(Token, LongAlignSize(LengthRequired + SeLengthSid(Token->PrimaryGroup))); 2537 | 2538 | if (!NT_SUCCESS(Status)) 2539 | { 2540 | ExFreePool(NewAcl); 2541 | return Status; 2542 | } 2543 | 2544 | SepFreeDefaultDacl(Token); 2545 | SepAppendDefaultDacl(Token , NewAcl); 2546 | 2547 | 2548 | ExFreePool(NewAcl); 2549 | } 2550 | 2551 | return Status; 2552 | } 2553 | 2554 | BOOLEAN SepCapabilitiesHasAppSiloBaseSID(ULONG CapabilityCount , SID_AND_ATTRIBUTES* Capabilities) 2555 | { 2556 | ULONG Index; 2557 | 2558 | for (Index = 0; Index < CapabilityCount; Index++) 2559 | { 2560 | if (RtlEqualSid(SeAppSiloSid, Capabilities[Index].Sid)) 2561 | { 2562 | return TRUE; 2563 | } 2564 | } 2565 | 2566 | return FALSE; 2567 | } 2568 | 2569 | PSID_IDENTIFIER_AUTHORITY 2570 | _RtlIdentifierAuthoritySid( 2571 | IN PSID Sid 2572 | ) 2573 | /*++ 2574 | 2575 | Routine Description: 2576 | 2577 | This function returns the address of an SID's IdentifierAuthority field. 2578 | 2579 | Arguments: 2580 | 2581 | Sid - Pointer to the SID data structure. 2582 | 2583 | Return Value: 2584 | 2585 | 2586 | --*/ 2587 | { 2588 | PISID ISid; 2589 | 2590 | // 2591 | // Typecast to the opaque SID 2592 | // 2593 | 2594 | ISid = (PISID)Sid; 2595 | 2596 | return &(ISid->IdentifierAuthority); 2597 | 2598 | } 2599 | 2600 | BOOLEAN SepIsAppSiloCapability(PSID CapSID) 2601 | { 2602 | PSID_IDENTIFIER_AUTHORITY CapIDAUTH, AppSiloCapIDAUTH; 2603 | ULONG Index ; 2604 | 2605 | if (((PISID)CapSID)->Revision != ((PISID)SeAppSiloSid)->Revision || 2606 | ((PISID)CapSID)->SubAuthorityCount <= ((PISID)SeAppSiloSid)->SubAuthorityCount) 2607 | { 2608 | return FALSE; 2609 | } 2610 | AppSiloCapIDAUTH = _RtlIdentifierAuthoritySid(SeAppSiloSid); 2611 | CapIDAUTH = _RtlIdentifierAuthoritySid(CapSID); 2612 | 2613 | if (memcmp(&CapIDAUTH, &AppSiloCapIDAUTH, sizeof(SID_IDENTIFIER_AUTHORITY)) == 0) 2614 | { 2615 | Index = 0; 2616 | 2617 | while (Index < ((PISID)SeAppSiloSid)->SubAuthorityCount) 2618 | { 2619 | if (((PISID)CapSID)->SubAuthority[Index] != ((PISID)SeAppSiloSid)->SubAuthority[Index]) 2620 | { 2621 | return FALSE; 2622 | } 2623 | Index++; 2624 | } 2625 | } 2626 | return TRUE; 2627 | } 2628 | 2629 | //we just import this function cause ObsSecurityDescriotCahce involved 2630 | VOID NTSYSAPI 2631 | ObDereferenceSecurityDescriptor( 2632 | __in PSECURITY_DESCRIPTOR SecurityDescriptor, 2633 | __in ULONG Count 2634 | ); 2635 | 2636 | BOOLEAN NTSYSAPI RtlValidAcl(IN PACL Acl); 2637 | BOOLEAN NTSYSAPI RtlFirstFreeAce(IN PACL Acl, OUT PVOID* FirstFree); 2638 | 2639 | NTSTATUS 2640 | RtlpAddKnownAce( 2641 | IN OUT PACL Acl, 2642 | IN ULONG AceRevision, 2643 | IN ULONG AceFlags, 2644 | IN ACCESS_MASK AccessMask, 2645 | IN PSID Sid, 2646 | IN UCHAR NewType 2647 | ) 2648 | 2649 | /* 2650 | 2651 | Routine Description: 2652 | 2653 | This routine adds KNOWN_ACE to an ACL. This is 2654 | expected to be a common form of ACL modification. 2655 | 2656 | A very bland ACE header is placed in the ACE. It provides no 2657 | inheritance and no ACE flags. The type is specified by the caller. 2658 | 2659 | Arguments: 2660 | 2661 | Acl - Supplies the Acl being modified 2662 | 2663 | AceRevision - Supplies the Acl/Ace revision of the ACE being added 2664 | 2665 | AceFlags - Supplies the inherit flags for the ACE. 2666 | 2667 | AccessMask - The mask of accesses to be denied to the specified SID. 2668 | 2669 | Sid - Pointer to the SID being denied access. 2670 | 2671 | NewType - Type of ACE to be added. 2672 | 2673 | Return Value: 2674 | 2675 | STATUS_SUCCESS - The ACE was successfully added. 2676 | 2677 | STATUS_INVALID_ACL - The specified ACL is not properly formed. 2678 | 2679 | STATUS_REVISION_MISMATCH - The specified revision is not known 2680 | or is incompatible with that of the ACL. 2681 | 2682 | STATUS_ALLOTTED_SPACE_EXCEEDED - The new ACE does not fit into the 2683 | ACL. A larger ACL buffer is required. 2684 | 2685 | STATUS_INVALID_SID - The provided SID is not a structurally valid 2686 | SID. 2687 | 2688 | STATUS_INVALID_PARAMETER - The AceFlags parameter was invalid. 2689 | 2690 | */ 2691 | 2692 | { 2693 | PVOID FirstFree; 2694 | USHORT AceSize; 2695 | PKNOWN_ACE GrantAce; 2696 | UCHAR NewRevision; 2697 | ULONG TestedAceFlags; 2698 | 2699 | 2700 | // Validate the structure of the SID 2701 | 2702 | 2703 | if (!RtlValidSid(Sid)) 2704 | { 2705 | return STATUS_INVALID_SID; 2706 | } 2707 | 2708 | 2709 | // Check the ACL & ACE revision levels 2710 | 2711 | 2712 | if (Acl->AclRevision > ACL_REVISION4 || AceRevision > ACL_REVISION4) 2713 | { 2714 | 2715 | return STATUS_REVISION_MISMATCH; 2716 | } 2717 | 2718 | 2719 | // Calculate the new revision of the ACL. The new revision is the maximum 2720 | // of the old revision and and new ACE's revision. This is possible because 2721 | // the format of previously defined ACEs did not change across revisions. 2722 | 2723 | 2724 | NewRevision = Acl->AclRevision > (UCHAR)AceRevision ? Acl->AclRevision : (UCHAR)AceRevision; 2725 | 2726 | 2727 | // Validate the AceFlags. 2728 | 2729 | 2730 | TestedAceFlags = AceFlags & ~VALID_INHERIT_FLAGS; 2731 | 2732 | if (TestedAceFlags != 0) 2733 | { 2734 | 2735 | if (NewType == SYSTEM_AUDIT_ACE_TYPE) 2736 | { 2737 | TestedAceFlags &= ~(SUCCESSFUL_ACCESS_ACE_FLAG | FAILED_ACCESS_ACE_FLAG); 2738 | } 2739 | else if (NewType == ACCESS_ALLOWED_ACE_TYPE) 2740 | { 2741 | TestedAceFlags &= ~(CRITICAL_ACE_FLAG); 2742 | } 2743 | 2744 | if (TestedAceFlags != 0) 2745 | { 2746 | return STATUS_INVALID_PARAMETER; 2747 | } 2748 | } 2749 | 2750 | 2751 | // Locate the first free ace and check to see that the Acl is 2752 | // well formed. 2753 | 2754 | 2755 | if (!RtlValidAcl(Acl)) 2756 | { 2757 | return STATUS_INVALID_ACL; 2758 | } 2759 | 2760 | if (!RtlFirstFreeAce(Acl, &FirstFree)) 2761 | { 2762 | 2763 | return STATUS_INVALID_ACL; 2764 | } 2765 | 2766 | 2767 | // Check to see if there is enough room in the Acl to store the new 2768 | // ACE 2769 | 2770 | 2771 | AceSize = (USHORT)(sizeof(ACE_HEADER) + sizeof(ACCESS_MASK) + SeLengthSid(Sid)); 2772 | 2773 | if (FirstFree == NULL || ((PUCHAR)FirstFree + AceSize > ((PUCHAR)Acl + Acl->AclSize))) 2774 | { 2775 | return STATUS_ALLOTTED_SPACE_EXCEEDED; 2776 | } 2777 | 2778 | 2779 | // Add the ACE to the end of the ACL 2780 | 2781 | 2782 | GrantAce = (PKNOWN_ACE)FirstFree; 2783 | GrantAce->Header.AceFlags = (UCHAR)AceFlags; 2784 | GrantAce->Header.AceType = NewType; 2785 | GrantAce->Header.AceSize = AceSize; 2786 | GrantAce->Mask = AccessMask; 2787 | 2788 | RtlCopySid(SeLengthSid(Sid), (PSID)(&GrantAce->SidStart), Sid); 2789 | 2790 | 2791 | // Increment the number of ACEs by 1. 2792 | 2793 | 2794 | Acl->AceCount += 1; 2795 | 2796 | 2797 | // Adjust the Acl revision, if necessary 2798 | 2799 | 2800 | Acl->AclRevision = NewRevision; 2801 | 2802 | 2803 | // And return to our caller 2804 | 2805 | 2806 | return STATUS_SUCCESS; 2807 | } 2808 | NTSTATUS NTSYSAPI RtlAddAce(PACL Acl, ULONG AceRevision, ULONG StartingAceIndex, PVOID AceList, ULONG AceListLength); 2809 | NTSTATUS NTSYSAPI ObSetSecurityObjectByPointer(__in PVOID Object, __in SECURITY_INFORMATION SecurityInformation, __in PSECURITY_DESCRIPTOR SecurityDescriptor); 2810 | 2811 | NTSTATUS SepAppendAceToTokenObjectAcl(PTOKEN Token , ACCESS_MASK Access , PSID Sid) 2812 | { 2813 | PSECURITY_DESCRIPTOR SecurityDescriptor = NULL ; 2814 | BOOLEAN MemoryAllocated = FALSE; 2815 | NTSTATUS Status = STATUS_SUCCESS; 2816 | PACL TokenDacl; 2817 | ULONG AclSize; 2818 | SECURITY_DESCRIPTOR NewSecurityDescriptor = { 0 }; 2819 | ACL_SIZE_INFORMATION AclSizeInfo; 2820 | ACL_REVISION_INFORMATION RevisionInfo; 2821 | PACL NewDacl = NULL; 2822 | PVOID Ace = NULL; 2823 | 2824 | Status = ObGetObjectSecurity(Token, &SecurityDescriptor, &MemoryAllocated); 2825 | 2826 | if (!NT_SUCCESS(Status)) 2827 | { 2828 | goto Exit; 2829 | } 2830 | 2831 | if (SecurityDescriptor == NULL) 2832 | { 2833 | return Status; 2834 | } 2835 | 2836 | TokenDacl = RtlpDaclAddrSecurityDescriptor((PISECURITY_DESCRIPTOR)SecurityDescriptor); 2837 | 2838 | if (TokenDacl == NULL) 2839 | { 2840 | goto Exit; 2841 | } 2842 | 2843 | //Make sure no such ACE exists in the original token dacl 2844 | 2845 | if (RtlFindAceBySid(TokenDacl, Sid, NULL)) 2846 | { 2847 | goto Exit; 2848 | } 2849 | 2850 | Status = RtlQueryInformationAcl(TokenDacl, &AclSizeInfo, sizeof(ACL_SIZE_INFORMATION), AclSizeInformation); 2851 | 2852 | if (!NT_SUCCESS(Status)) 2853 | { 2854 | goto Exit; 2855 | } 2856 | 2857 | Status = RtlQueryInformationAcl(TokenDacl, &RevisionInfo, sizeof(ACL_REVISION_INFORMATION), AclRevisionInformation); 2858 | 2859 | if (!NT_SUCCESS(Status)) 2860 | { 2861 | goto Exit; 2862 | } 2863 | 2864 | AclSize = LongAlignSize(AclSizeInfo.AclBytesInUse + RtlLengthSid(Sid) + FIELD_OFFSET(ACCESS_ALLOWED_ACE, SidStart)); 2865 | 2866 | NewDacl = (PACL) ExAllocatePool2(POOL_FLAG_PAGED, AclSize, SEP_ACL_TAG); 2867 | 2868 | if (NewDacl == NULL) 2869 | { 2870 | Status = STATUS_INSUFFICIENT_RESOURCES; 2871 | goto Exit; 2872 | } 2873 | 2874 | Status = RtlCreateAcl(NewDacl, AclSize, RevisionInfo.AclRevision); 2875 | 2876 | if (!NT_SUCCESS(Status)) 2877 | { 2878 | goto Exit; 2879 | } 2880 | 2881 | Status = RtlGetAce(TokenDacl, 0, &Ace); 2882 | 2883 | if (!NT_SUCCESS(Status)) 2884 | { 2885 | goto Exit; 2886 | } 2887 | 2888 | Status = RtlAddAce(NewDacl, RevisionInfo.AclRevision, 0, Ace, AclSizeInfo.AclBytesInUse - sizeof(ACL)); 2889 | 2890 | if (!NT_SUCCESS(Status)) 2891 | { 2892 | goto Exit; 2893 | } 2894 | 2895 | Status = RtlpAddKnownAce(NewDacl, RevisionInfo.AclRevision, 0, Access, Sid, ACCESS_ALLOWED_ACE_TYPE); 2896 | 2897 | if (!NT_SUCCESS(Status)) 2898 | { 2899 | goto Exit; 2900 | } 2901 | 2902 | Status = RtlCreateSecurityDescriptor(&NewSecurityDescriptor, SECURITY_DESCRIPTOR_REVISION); 2903 | 2904 | if (!NT_SUCCESS(Status)) 2905 | { 2906 | goto Exit; 2907 | } 2908 | 2909 | Status = RtlSetDaclSecurityDescriptor(&NewSecurityDescriptor, TRUE, TokenDacl, FALSE); 2910 | 2911 | if (!NT_SUCCESS(Status)) 2912 | { 2913 | goto Exit; 2914 | } 2915 | 2916 | Status = ObSetSecurityObjectByPointer(Token, DACL_SECURITY_INFORMATION, &NewSecurityDescriptor); 2917 | 2918 | Exit: 2919 | if (NewDacl) 2920 | { 2921 | ExFreePool(NewDacl); 2922 | } 2923 | 2924 | if (SecurityDescriptor) 2925 | { 2926 | ObReleaseObjectSecurity(SecurityDescriptor, MemoryAllocated); 2927 | } 2928 | 2929 | return Status; 2930 | } 2931 | PVOID 2932 | NTSYSAPI 2933 | RtlFindAceByType( 2934 | _In_ PACL Acl, 2935 | _In_ UCHAR AceType, 2936 | _Out_opt_ PULONG Index 2937 | ); 2938 | NTSYSAPI 2939 | NTSTATUS 2940 | 2941 | RtlAddProcessTrustLabelAce( 2942 | _Inout_ PACL Acl, 2943 | _In_ ULONG AceRevision, 2944 | _In_ ULONG AceFlags, 2945 | _In_ PSID ProcessTrustLabelSid, 2946 | _In_ UCHAR AceType, // SYSTEM_PROCESS_TRUST_LABEL_ACE_TYPE 2947 | _In_ ACCESS_MASK AccessMask 2948 | ); 2949 | 2950 | 2951 | NTSYSAPI 2952 | NTSTATUS 2953 | 2954 | RtlSetSaclSecurityDescriptor( 2955 | _Inout_ PSECURITY_DESCRIPTOR SecurityDescriptor, 2956 | _In_ BOOLEAN SaclPresent, 2957 | _In_opt_ PACL Sacl, 2958 | _In_ BOOLEAN SaclDefaulted 2959 | ); 2960 | 2961 | NTSTATUS SepSetProcessTrustLabelAceForToken(PTOKEN Token) 2962 | { 2963 | SECURITY_DESCRIPTOR Sd = { 0 }; 2964 | PSID TrustLevelSid; 2965 | NTSTATUS Status; 2966 | PISECURITY_DESCRIPTOR OldSd = NULL; 2967 | BOOLEAN MemoryAllocated = FALSE; 2968 | PACL TokenSacl; 2969 | PSYSTEM_PROCESS_TRUST_LABEL_ACE TrustLabelAce; 2970 | ULONG AceIndex; 2971 | ACL_REVISION_INFORMATION RevisionInfo; 2972 | ACL_SIZE_INFORMATION AclSizeInfo; 2973 | PVOID Ace = NULL ; 2974 | ULONG AclSize; 2975 | PACL NewSacl = NULL; 2976 | 2977 | if (Token == NULL) 2978 | { 2979 | return STATUS_INVALID_PARAMETER; 2980 | } 2981 | 2982 | RevisionInfo.AclRevision = ACL_REVISION2; 2983 | AclSizeInfo.AclBytesInUse = sizeof(ACL); 2984 | 2985 | TrustLevelSid = Token->TrustLevelSid; 2986 | 2987 | Status = ObGetObjectSecurity(Token, &OldSd, &MemoryAllocated); 2988 | 2989 | if (!NT_SUCCESS(Status)) 2990 | { 2991 | goto Exit; 2992 | } 2993 | 2994 | if (OldSd == NULL) 2995 | { 2996 | return Status; 2997 | } 2998 | 2999 | TokenSacl = RtlpSaclAddrSecurityDescriptor(OldSd); 3000 | 3001 | if (TokenSacl) 3002 | { 3003 | TrustLabelAce = RtlFindAceByType(TokenSacl, SYSTEM_PROCESS_TRUST_LABEL_ACE_TYPE, &AceIndex); 3004 | 3005 | if (TrustLevelSid == NULL) 3006 | { 3007 | if (TrustLabelAce == NULL) 3008 | { 3009 | goto Exit; 3010 | } 3011 | } 3012 | else if (TrustLabelAce && RtlEqualSid(&(TrustLabelAce->SidStart), TrustLevelSid)) 3013 | { 3014 | TrustLabelAce->Mask &= (READ_CONTROL | TOKEN_QUERY_SOURCE | TOKEN_QUERY | TOKEN_IMPERSONATE | TOKEN_DUPLICATE); 3015 | goto Exit; 3016 | } 3017 | 3018 | Status = RtlQueryInformationAcl(TokenSacl, &AclSizeInfo, sizeof(ACL_SIZE_INFORMATION), AclSizeInformation); 3019 | 3020 | if (!NT_SUCCESS(Status)) 3021 | { 3022 | goto Exit; 3023 | } 3024 | 3025 | Status = RtlQueryInformationAcl(TokenSacl, &RevisionInfo, sizeof(ACL_REVISION_INFORMATION), AclRevisionInformation); 3026 | 3027 | if (!NT_SUCCESS(Status)) 3028 | { 3029 | goto Exit; 3030 | } 3031 | 3032 | Status = RtlGetAce(TokenSacl, 0, &Ace); 3033 | 3034 | if (!NT_SUCCESS(Status)) 3035 | { 3036 | goto Exit; 3037 | } 3038 | } 3039 | 3040 | AclSize = AclSizeInfo.AclBytesInUse + SeLengthSid(TrustLevelSid) + FIELD_OFFSET(SYSTEM_PROCESS_TRUST_LABEL_ACE, SidStart); 3041 | 3042 | 3043 | NewSacl = ExAllocatePool2(POOL_FLAG_PAGED, AclSize, SEP_ACL_TAG); 3044 | 3045 | if (NewSacl == NULL) 3046 | { 3047 | Status = STATUS_INSUFFICIENT_RESOURCES; 3048 | goto Exit; 3049 | } 3050 | 3051 | Status = RtlCreateAcl(NewSacl, AclSize, RevisionInfo.AclRevision); 3052 | 3053 | if (!NT_SUCCESS(Status)) 3054 | { 3055 | goto Exit; 3056 | } 3057 | 3058 | if (Ace != NULL) 3059 | { 3060 | Status = RtlAddAce(NewSacl, RevisionInfo.AclRevision, 0, Ace, AclSizeInfo.AclBytesInUse - sizeof(ACL)); 3061 | 3062 | if (!NT_SUCCESS(Status)) 3063 | { 3064 | goto Exit; 3065 | } 3066 | } 3067 | 3068 | Status = RtlAddProcessTrustLabelAce(NewSacl, 3069 | ACL_REVISION2, 3070 | 0, 3071 | TrustLevelSid, 3072 | SYSTEM_PROCESS_TRUST_LABEL_ACE_TYPE, 3073 | (READ_CONTROL | TOKEN_QUERY_SOURCE | TOKEN_QUERY | TOKEN_IMPERSONATE | TOKEN_DUPLICATE)); 3074 | 3075 | if (!NT_SUCCESS(Status)) 3076 | { 3077 | goto Exit; 3078 | } 3079 | 3080 | Status = RtlCreateSecurityDescriptor(&Sd, SECURITY_DESCRIPTOR_REVISION); 3081 | 3082 | if (!NT_SUCCESS(Status)) 3083 | { 3084 | goto Exit; 3085 | } 3086 | 3087 | Sd.Revision = SECURITY_DESCRIPTOR_REVISION; 3088 | 3089 | Status = RtlSetSaclSecurityDescriptor(&Sd, TRUE, NewSacl, FALSE); 3090 | 3091 | if (!NT_SUCCESS(Status)) 3092 | { 3093 | goto Exit; 3094 | } 3095 | 3096 | RtlpPropagateControlBits(&Sd, OldSd, (SE_SACL_PROTECTED | SE_SACL_AUTO_INHERITED | SE_SACL_PRESENT | SE_SACL_DEFAULTED)); 3097 | 3098 | Status = ObSetSecurityObjectByPointer(Token, 3099 | (ACCESS_FILTER_SECURITY_INFORMATION | PROCESS_TRUST_LABEL_SECURITY_INFORMATION | SCOPE_SECURITY_INFORMATION | ATTRIBUTE_SECURITY_INFORMATION | LABEL_SECURITY_INFORMATION | SACL_SECURITY_INFORMATION), 3100 | &Sd); 3101 | 3102 | 3103 | Exit: 3104 | if (NewSacl) 3105 | { 3106 | ExFreePool(NewSacl); 3107 | } 3108 | 3109 | if (OldSd) 3110 | { 3111 | ObReleaseObjectSecurity(OldSd, MemoryAllocated); 3112 | } 3113 | 3114 | return Status; 3115 | } 3116 | 3117 | NTSTATUS SepFinalizeTokenAcls(PTOKEN Token) 3118 | { 3119 | NTSTATUS Status; 3120 | 3121 | Status = SepAppendAceToTokenObjectAcl(Token, TOKEN_QUERY, SeAliasAdminsSid); 3122 | 3123 | if (NT_SUCCESS(Status)) 3124 | { 3125 | return SepSetProcessTrustLabelAceForToken(Token); 3126 | } 3127 | return Status; 3128 | } 3129 | 3130 | NTSTATUS NTAPI NtCreateLowBoxToken( 3131 | _Out_ PHANDLE TokenHandle, 3132 | _In_ HANDLE ExistingTokenHandle, 3133 | _In_ ACCESS_MASK DesiredAccess, 3134 | _In_ POBJECT_ATTRIBUTES ObjectAttributes, 3135 | _In_ PSID PackageSid, 3136 | _In_ ULONG CapabilityCount, 3137 | _In_ PSID_AND_ATTRIBUTES Capabilities, 3138 | _In_ ULONG HandleCount, 3139 | _In_ HANDLE* Handles) 3140 | { 3141 | KPROCESSOR_MODE Mode; 3142 | PTOKEN ExistingToken; 3143 | OBJECT_HANDLE_INFORMATION ohi = { 0 , 0 }; 3144 | NTSTATUS Status; 3145 | PISID CapturedPackageSid = NULL; 3146 | PSID_AND_ATTRIBUTES CapturedCapabilities = NULL; 3147 | ULONG CapturedCapabilitiesSize = 0; 3148 | BOOLEAN bDuplicatedToken = FALSE; 3149 | BOOLEAN bTokenLocked = FALSE; 3150 | PTOKEN DuplicatedToken = NULL; 3151 | HANDLE NewTokenHandle = 0; 3152 | HANDLE* CapturedHandles = NULL; 3153 | ULONG Index; 3154 | ULONG SidIndex; 3155 | BOOLEAN bLegit = FALSE; 3156 | TOKEN_MANDATORY_POLICY MandtoryPolicy = { TOKEN_MANDATORY_POLICY_NO_WRITE_UP }; 3157 | PSID_AND_ATTRIBUTES TokenIntegrity; 3158 | PISID IntegritySid; 3159 | SEP_CACHED_HANDLES_ENTRY_DESCRIPTOR chEntryDescriptor = { 0 , 0 }; 3160 | 3161 | APPCONTAINER_SID_TYPE AppContainerSidType; 3162 | ACCESS_MASK GrantedAccess; 3163 | 3164 | Mode = ExGetPreviousMode(); 3165 | 3166 | 3167 | if (Mode) 3168 | { 3169 | __try 3170 | { 3171 | ProbeForWriteHandle(TokenHandle); 3172 | 3173 | ProbeForRead(Handles, sizeof(HANDLE) * HandleCount, sizeof(HANDLE)); 3174 | } 3175 | __except (EXCEPTION_EXECUTE_HANDLER) 3176 | { 3177 | return GetExceptionCode(); 3178 | } 3179 | } 3180 | 3181 | if (PackageSid == NULL) 3182 | { 3183 | return STATUS_INVALID_PARAMETER; 3184 | } 3185 | 3186 | //ensure HandleCount and Handles pointer are consistent 3187 | //*(zero count requires NULL pointer and vice versa) 3188 | 3189 | if (HandleCount == 0) 3190 | { 3191 | if (Handles != NULL) 3192 | { 3193 | return STATUS_INVALID_PARAMETER_MIX; 3194 | } 3195 | } 3196 | else 3197 | { 3198 | if (Handles == NULL) 3199 | { 3200 | return STATUS_INVALID_PARAMETER_MIX; 3201 | } 3202 | } 3203 | 3204 | ExistingToken = NULL; 3205 | 3206 | Status = ObReferenceObjectByHandle(ExistingTokenHandle, TOKEN_DUPLICATE, *SeTokenObjectType, Mode, &ExistingToken, &ohi); 3207 | 3208 | if (!NT_SUCCESS(Status)) 3209 | { 3210 | return Status; 3211 | } 3212 | 3213 | Status = SeCaptureSid(PackageSid, Mode, NULL, 0, POOL_ZERO_ALLOCATION | PagedPool, TRUE, &CapturedPackageSid); 3214 | 3215 | if (!NT_SUCCESS(Status)) 3216 | { 3217 | return Status; 3218 | } 3219 | 3220 | 3221 | // Verify caller's privilege for creating LowBox token - must be non-LowBox process or parent AppContainer 3222 | 3223 | Status = SepCheckCreateLowBox(CapturedPackageSid); 3224 | 3225 | if (!NT_SUCCESS(Status)) 3226 | { 3227 | return Status; 3228 | } 3229 | 3230 | // Impersonation token must be at SecurityImpersonation level or higher 3231 | 3232 | if (ExistingToken->TokenType != TokenPrimary && ExistingToken->ImpersonationLevel < SecurityImpersonation) 3233 | { 3234 | ObDereferenceObject(ExistingToken); 3235 | return STATUS_BAD_IMPERSONATION_LEVEL; 3236 | } 3237 | 3238 | GrantedAccess = ohi.GrantedAccess; 3239 | 3240 | if (DesiredAccess) 3241 | { 3242 | GrantedAccess = DesiredAccess; 3243 | } 3244 | 3245 | 3246 | // Capture capabilities and handles 3247 | 3248 | if (Capabilities) 3249 | { 3250 | Status = SeCaptureSidAndAttributesArray(Capabilities, CapabilityCount, Mode, NULL, 0, POOL_ZERO_ALLOCATION | PagedPool, TRUE, &CapturedCapabilities, &CapturedCapabilitiesSize); 3251 | } 3252 | 3253 | if (!NT_SUCCESS(Status)) 3254 | { 3255 | goto Exit; 3256 | } 3257 | 3258 | 3259 | Status = SepCaptureHandles(HandleCount, Handles, &CapturedHandles); 3260 | 3261 | if (!NT_SUCCESS(Status)) 3262 | { 3263 | goto Exit; 3264 | } 3265 | 3266 | //check captured packaged sid 3267 | 3268 | if (RtlIsPackageSid(CapturedPackageSid) == FALSE) 3269 | { 3270 | Status = STATUS_INVALID_PARAMETER; 3271 | goto Exit; 3272 | } 3273 | 3274 | if (CapturedPackageSid->SubAuthorityCount != SECURITY_APP_PACKAGE_RID_COUNT && CapturedPackageSid->SubAuthorityCount != SECURITY_CHILD_PACKAGE_RID_COUNT) 3275 | { 3276 | Status = STATUS_INVALID_PACKAGE_SID_LENGTH; 3277 | goto Exit; 3278 | } 3279 | 3280 | 3281 | //Check for duplicated SID 3282 | 3283 | for (Index = 0; Index < CapabilityCount; Index++) 3284 | { 3285 | if (RtlIsCapabilitySid(CapturedCapabilities[Index].Sid) == FALSE) 3286 | { 3287 | Status = STATUS_INVALID_PARAMETER; 3288 | goto Exit; 3289 | } 3290 | 3291 | 3292 | for (SidIndex = 0; SidIndex < Index; SidIndex++) 3293 | { 3294 | if (RtlEqualSid(CapturedCapabilities[Index].Sid, CapturedCapabilities[SidIndex].Sid) == TRUE) 3295 | { 3296 | Status = STATUS_INVALID_PARAMETER; 3297 | goto Exit; 3298 | } 3299 | } 3300 | } 3301 | 3302 | //AppSilo checking added Win11 24H2 3303 | if (!SepCapabilitiesHasAppSiloBaseSID(CapabilityCount, CapturedCapabilities)) 3304 | { 3305 | for (Index = 0; Index < CapabilityCount; Index++) 3306 | { 3307 | if (SepIsAppSiloCapability(CapturedCapabilities[Index].Sid)) 3308 | { 3309 | Status = STATUS_INVALID_PARAMETER; 3310 | goto Exit; 3311 | } 3312 | } 3313 | } 3314 | //end 3315 | 3316 | 3317 | Status = RtlGetAppContainerSidType(CapturedPackageSid, &AppContainerSidType); 3318 | 3319 | if (!NT_SUCCESS(Status)) 3320 | { 3321 | goto Exit; 3322 | } 3323 | 3324 | //Check for child app container sid creation 3325 | 3326 | 3327 | if (AppContainerSidType == ChildAppContainerSidType) 3328 | { 3329 | Status = SepCheckCapabilities(ExistingToken, CapabilityCount, CapturedCapabilities, 0, &bLegit); 3330 | 3331 | if (bLegit == FALSE) 3332 | { 3333 | Status = STATUS_ACCESS_DENIED; 3334 | goto Exit; 3335 | } 3336 | } 3337 | 3338 | if (!NT_SUCCESS(Status)) 3339 | { 3340 | goto Exit; 3341 | } 3342 | 3343 | Status = SepDuplicateToken(ExistingToken, 3344 | ObjectAttributes, 3345 | FALSE, 3346 | TokenPrimary, 3347 | SecurityAnonymous, 3348 | Mode, 3349 | FALSE, 3350 | &DuplicatedToken); 3351 | 3352 | if (!NT_SUCCESS(Status)) 3353 | { 3354 | goto Exit; 3355 | } 3356 | 3357 | bDuplicatedToken = TRUE; 3358 | 3359 | Status = SeSetMandatoryPolicyToken(DuplicatedToken, &MandtoryPolicy); 3360 | 3361 | if (!NT_SUCCESS(Status)) 3362 | { 3363 | goto Exit; 3364 | } 3365 | 3366 | SepAcquireTokenWriteLock(DuplicatedToken); 3367 | 3368 | bTokenLocked = TRUE; 3369 | 3370 | TokenIntegrity = SepLocateTokenIntegrity(DuplicatedToken); 3371 | 3372 | if (TokenIntegrity == NULL) 3373 | { 3374 | Status = STATUS_INVALID_LABEL; 3375 | goto Exit; 3376 | } 3377 | 3378 | IntegritySid = TokenIntegrity->Sid; 3379 | 3380 | if (*RtlSubAuthorityCountSid(IntegritySid)) 3381 | { 3382 | *RtlSubAuthoritySid(IntegritySid, *RtlSubAuthorityCountSid(IntegritySid) - 1) = MANDATORY_LEVEL_TO_MANDATORY_RID(MandatoryLevelLow); 3383 | } 3384 | 3385 | DuplicatedToken->Privileges.Enabled &= ((1 << SE_CHANGE_NOTIFY_PRIVILEGE) | (1 << SE_UNDOCK_PRIVILEGE)); 3386 | DuplicatedToken->Privileges.EnabledByDefault &= ((1 << SE_CHANGE_NOTIFY_PRIVILEGE) | (1 <Privileges.Present &= ((1 << SE_CHANGE_NOTIFY_PRIVILEGE) | (1 << SE_UNDOCK_PRIVILEGE)); 3388 | DuplicatedToken->TokenFlags &= ~TOKEN_NOT_LOW; 3389 | DuplicatedToken->TokenFlags |= TOKEN_LOWBOX; 3390 | 3391 | Status = SepSetTokenCapabilities(DuplicatedToken, CapturedPackageSid, CapturedCapabilities, CapabilityCount); 3392 | 3393 | if (!NT_SUCCESS(Status)) 3394 | { 3395 | goto Exit; 3396 | } 3397 | 3398 | Status = SepSetTokenLowboxNumber(DuplicatedToken, CapturedPackageSid); 3399 | 3400 | if (!NT_SUCCESS(Status)) 3401 | { 3402 | goto Exit; 3403 | } 3404 | 3405 | chEntryDescriptor.u1.PackageSid = CapturedPackageSid; 3406 | 3407 | Status = SepSetTokenCachedHandles(DuplicatedToken, &chEntryDescriptor, HandleCount, CapturedHandles); 3408 | 3409 | if (!NT_SUCCESS(Status)) 3410 | { 3411 | goto Exit; 3412 | } 3413 | 3414 | Status = SepSetTokenPackage(DuplicatedToken, CapturedPackageSid); 3415 | 3416 | if (!NT_SUCCESS(Status)) 3417 | { 3418 | goto Exit; 3419 | } 3420 | 3421 | Status = SepAppendAceToTokenDefaultDacl(DuplicatedToken, CapturedPackageSid); 3422 | 3423 | if (!NT_SUCCESS(Status)) 3424 | { 3425 | goto Exit; 3426 | } 3427 | 3428 | //Added 23H2 3429 | 3430 | if (SepSidInTokenSidHash(&DuplicatedToken->CapabilitiesHash, NULL, SePermissiveLearningModeCapabilitySid, FALSE, FALSE, TRUE)) 3431 | { 3432 | // It's impossible to have learning mode capability in the duplicated token 3433 | // without having SepLearningModeTokenCount (in 22H2 and below), 3434 | // but we perform the check anyway 3435 | 3436 | if (KernelSymbols.SepLearningModeTokenCount) 3437 | InterlockedAdd((LONG*)KernelSymbols.SepLearningModeTokenCount , 1); 3438 | DuplicatedToken->TokenFlags |= TOKEN_PERMISSIVE_LEARNING_MODE; 3439 | } 3440 | else 3441 | { 3442 | DuplicatedToken->TokenFlags &= ~TOKEN_PERMISSIVE_LEARNING_MODE; 3443 | 3444 | if (SepSidInTokenSidHash(&DuplicatedToken->CapabilitiesHash, NULL, SeLearningModeLoggingCapabilitySid, FALSE , FALSE , TRUE)) 3445 | { 3446 | // It's impossible to have learning mode capability in the duplicated token 3447 | // without having SepLearningModeTokenCount (in 22H2 and below), 3448 | // but we perform the check anyway 3449 | 3450 | if (KernelSymbols.SepLearningModeTokenCount) 3451 | InterlockedAdd((LONG*)KernelSymbols.SepLearningModeTokenCount , 1); 3452 | DuplicatedToken->TokenFlags |= TOKEN_LEARNING_MODE_LOGGING; 3453 | } 3454 | } 3455 | //end 3456 | 3457 | SepReleaseTokenWriteLock(DuplicatedToken, TRUE); 3458 | 3459 | bTokenLocked = FALSE; 3460 | 3461 | //create token handle 3462 | 3463 | Status = ObInsertObject(DuplicatedToken, 0, GrantedAccess, 1, NULL, &NewTokenHandle); 3464 | 3465 | if (!NT_SUCCESS(Status)) 3466 | { 3467 | bDuplicatedToken = FALSE; 3468 | goto Exit; 3469 | } 3470 | 3471 | //Added 24H2 3472 | 3473 | Status = SepAppendAceToTokenObjectAcl(DuplicatedToken, TOKEN_ALL_ACCESS, CapturedPackageSid); 3474 | 3475 | if (!NT_SUCCESS(Status)) 3476 | { 3477 | goto Exit; 3478 | } 3479 | 3480 | //end 3481 | 3482 | SepFinalizeTokenAcls(DuplicatedToken); 3483 | ObDereferenceObject(DuplicatedToken); 3484 | bDuplicatedToken = FALSE; 3485 | 3486 | 3487 | Exit: 3488 | if (bTokenLocked) 3489 | { 3490 | SepReleaseTokenWriteLock(DuplicatedToken, NT_SUCCESS(Status)); 3491 | } 3492 | 3493 | if (!NT_SUCCESS(Status)) 3494 | { 3495 | if (bDuplicatedToken) 3496 | { 3497 | ObDereferenceObject(DuplicatedToken); 3498 | } 3499 | 3500 | if (NewTokenHandle) 3501 | { 3502 | ObCloseHandle(NewTokenHandle, Mode); 3503 | } 3504 | } 3505 | 3506 | if (CapturedCapabilities) 3507 | { 3508 | SeReleaseLuidAndAttributesArray(CapturedCapabilities, Mode , TRUE ); 3509 | } 3510 | 3511 | if (CapturedPackageSid) 3512 | { 3513 | SeReleaseSid(CapturedPackageSid, Mode, TRUE); 3514 | } 3515 | 3516 | if (ExistingToken) 3517 | { 3518 | ObDereferenceObject(ExistingToken); 3519 | } 3520 | 3521 | if (CapturedHandles) 3522 | { 3523 | ExFreePool(CapturedHandles); 3524 | } 3525 | 3526 | if (NT_SUCCESS(Status)) 3527 | { 3528 | __try 3529 | { 3530 | *TokenHandle = NewTokenHandle; 3531 | } 3532 | __except (EXCEPTION_EXECUTE_HANDLER) 3533 | { 3534 | return GetExceptionCode(); 3535 | } 3536 | 3537 | } 3538 | 3539 | return Status; 3540 | } 3541 | 3542 | 3543 | 3544 | static SID_IDENTIFIER_AUTHORITY SepPackagesAuthority = { 0 , 0 , 0 , 0 , 0 , 16 }; 3545 | static SID_IDENTIFIER_AUTHORITY SepNtAuthority = { 0,0,0,0,0,5 }; 3546 | static SID_IDENTIFIER_AUTHORITY SepCreatorSidAuthority = { 0,0,0,0,0,3 }; 3547 | PSID SeConstrainedImpersonationCapabilityGroupSid = NULL; 3548 | 3549 | //learning mode names 3550 | 3551 | UNICODE_STRING LeanringModeLoggingCapabilitySidName = RTL_CONSTANT_STRING(L"learningModeLogging"); 3552 | UNICODE_STRING PermissiveLearningModeCapabilitySidName = RTL_CONSTANT_STRING(L"permissiveLearningMode"); 3553 | 3554 | UNICODE_STRING LpacCapabilitySidNames[] = { 3555 | RTL_CONSTANT_STRING(L"lpacAppExperience"), 3556 | RTL_CONSTANT_STRING(L"lpacCom"), 3557 | RTL_CONSTANT_STRING(L"lpacCryptoServices"), 3558 | RTL_CONSTANT_STRING(L"lpacIdentityServices"), 3559 | RTL_CONSTANT_STRING(L"lpacInstrumentation"), 3560 | RTL_CONSTANT_STRING(L"lpacEnterprisePolicyChangeNotifications"), 3561 | RTL_CONSTANT_STRING(L"lpacMedia"), 3562 | RTL_CONSTANT_STRING(L"lpacPnpNotifications"), 3563 | RTL_CONSTANT_STRING(L"registryRead"), 3564 | RTL_CONSTANT_STRING(L"lpacServicesManagement"), 3565 | RTL_CONSTANT_STRING(L"lpacSessionManagement"), 3566 | RTL_CONSTANT_STRING(L"lpacPrinting"), 3567 | RTL_CONSTANT_STRING(L"lpacWebPlatform"), 3568 | RTL_CONSTANT_STRING(L"lpacPayments"), 3569 | RTL_CONSTANT_STRING(L"lpacClipboard"), 3570 | RTL_CONSTANT_STRING(L"lpacIME"), 3571 | RTL_CONSTANT_STRING(L"lpacPackageManagerOperation"), 3572 | RTL_CONSTANT_STRING(L"lpacDeviceAccess") 3573 | }; 3574 | 3575 | NTSTATUS 3576 | NTSYSAPI 3577 | RtlDeriveCapabilitySidsFromName( 3578 | _Inout_ PUNICODE_STRING UnicodeString, 3579 | _Out_ PSID CapabilityGroupSid, 3580 | _Out_ PSID CapabilitySid 3581 | ); 3582 | 3583 | 3584 | 3585 | VOID UninitKnownSIDs() 3586 | { 3587 | ULONG i; 3588 | 3589 | if (SeAppSiloSid) 3590 | { 3591 | ExFreePool(SeAppSiloSid); 3592 | SeAppSiloSid = NULL; 3593 | } 3594 | if (SeAliasAdminsSid) 3595 | { 3596 | ExFreePool(SeAliasAdminsSid); 3597 | SeAliasAdminsSid = NULL; 3598 | } 3599 | if (SePrincipalSelfSid) 3600 | { 3601 | ExFreePool(SePrincipalSelfSid); 3602 | SePrincipalSelfSid = NULL; 3603 | } 3604 | if (SeOwnerRightsSid) 3605 | { 3606 | ExFreePool(SeOwnerRightsSid); 3607 | SeOwnerRightsSid = NULL; 3608 | } 3609 | if (SeLearningModeLoggingCapabilitySid) 3610 | { 3611 | ExFreePool(SeLearningModeLoggingCapabilitySid); 3612 | SeLearningModeLoggingCapabilitySid = NULL; 3613 | } 3614 | if (SePermissiveLearningModeCapabilitySid) 3615 | { 3616 | ExFreePool(SePermissiveLearningModeCapabilitySid); 3617 | SePermissiveLearningModeCapabilitySid = NULL; 3618 | } 3619 | 3620 | if (SeConstrainedImpersonationCapabilityGroupSid) 3621 | { 3622 | ExFreePool(SeConstrainedImpersonationCapabilityGroupSid); 3623 | SeConstrainedImpersonationCapabilityGroupSid = NULL; 3624 | } 3625 | 3626 | for (i = 0; i < SE_LPAC_CAPABILITY_COUNT; i++) 3627 | { 3628 | if (*SeLpacCapabilitySids[i]) 3629 | { 3630 | ExFreePool(*SeLpacCapabilitySids[i]); 3631 | *(PSID*)SeLpacCapabilitySids[i] = NULL; 3632 | } 3633 | } 3634 | 3635 | return; 3636 | 3637 | } 3638 | NTSTATUS InitKnownSIDs() 3639 | { 3640 | NTSTATUS Status; 3641 | ULONG i; 3642 | 3643 | //SeAppSiloSid 3644 | SeAppSiloSid = ExAllocatePool2(POOL_FLAG_NON_PAGED/* | POOL_FLAG_RAISE_ON_FAILURE*/, RtlLengthRequiredSid(SECURITY_BUILTIN_APP_PACKAGE_RID_COUNT), SEP_SID_TAG); 3645 | 3646 | if (SeAppSiloSid == NULL) 3647 | { 3648 | UninitKnownSIDs(); 3649 | return STATUS_NO_MEMORY; 3650 | } 3651 | 3652 | RtlInitializeSid(SeAppSiloSid, &SepPackagesAuthority, SECURITY_BUILTIN_APP_PACKAGE_RID_COUNT); 3653 | 3654 | *RtlSubAuthoritySid(SeAppSiloSid, 0) = SECURITY_CAPABILITY_BASE_RID; 3655 | *RtlSubAuthoritySid(SeAppSiloSid, 1) = SECURITY_CAPABILITY_APP_SILO_RID; 3656 | 3657 | //SeAliasAdminsSid 3658 | SeAliasAdminsSid = ExAllocatePool2(POOL_FLAG_PAGED/* | POOL_FLAG_RAISE_ON_FAILURE*/, RtlLengthRequiredSid(2), SEP_SID_TAG); 3659 | 3660 | if (SeAliasAdminsSid == NULL) 3661 | { 3662 | UninitKnownSIDs(); 3663 | return STATUS_NO_MEMORY; 3664 | } 3665 | 3666 | RtlInitializeSid(SeAliasAdminsSid, &SepNtAuthority, 2); 3667 | 3668 | *RtlSubAuthoritySid(SeAliasAdminsSid, 0) = SECURITY_BUILTIN_DOMAIN_RID; 3669 | *RtlSubAuthoritySid(SeAliasAdminsSid, 1) = DOMAIN_ALIAS_RID_ADMINS; 3670 | 3671 | //SePrincipalSelfSid 3672 | SePrincipalSelfSid = ExAllocatePool2(POOL_FLAG_NON_PAGED /* | POOL_FLAG_RAISE_ON_FAILURE*/, RtlLengthRequiredSid(1), SEP_SID_TAG); 3673 | 3674 | if (SePrincipalSelfSid == NULL) 3675 | { 3676 | UninitKnownSIDs(); 3677 | return STATUS_NO_MEMORY; 3678 | } 3679 | 3680 | RtlInitializeSid(SePrincipalSelfSid, &SepNtAuthority, 1); 3681 | 3682 | *RtlSubAuthoritySid(SePrincipalSelfSid, 0) = SECURITY_PRINCIPAL_SELF_RID; 3683 | 3684 | 3685 | //SeOwnerRightsSid 3686 | SeOwnerRightsSid = ExAllocatePool2(POOL_FLAG_NON_PAGED/* | POOL_FLAG_RAISE_ON_FAILURE*/, RtlLengthRequiredSid(1), SEP_SID_TAG); 3687 | 3688 | if (SeOwnerRightsSid == NULL) 3689 | { 3690 | UninitKnownSIDs(); 3691 | return STATUS_NO_MEMORY; 3692 | } 3693 | 3694 | RtlInitializeSid(SeOwnerRightsSid, &SepCreatorSidAuthority, 1); 3695 | 3696 | *RtlSubAuthoritySid(SeOwnerRightsSid, 0) = SECURITY_CREATOR_OWNER_RIGHTS_RID; 3697 | 3698 | //Initialize the SeConstrainedImpersonationCapabilityGroupSid first 3699 | 3700 | SeConstrainedImpersonationCapabilityGroupSid = ExAllocatePool2(POOL_FLAG_PAGED, RtlLengthRequiredSid(SECURITY_INSTALLER_GROUP_CAPABILITY_RID_COUNT), SEP_SID_TAG); 3701 | 3702 | if (SeConstrainedImpersonationCapabilityGroupSid == NULL) 3703 | { 3704 | UninitKnownSIDs(); 3705 | return STATUS_NO_MEMORY; 3706 | } 3707 | 3708 | //we don't need to initialze the group SID 3709 | 3710 | //SeLearningModeLoggingCapabilitySid 3711 | SeLearningModeLoggingCapabilitySid = ExAllocatePool2(POOL_FLAG_PAGED/* | POOL_FLAG_RAISE_ON_FAILURE*/, RtlLengthRequiredSid(10), SEP_SID_TAG); 3712 | 3713 | if (SeLearningModeLoggingCapabilitySid == NULL) 3714 | { 3715 | UninitKnownSIDs(); 3716 | return STATUS_NO_MEMORY; 3717 | } 3718 | 3719 | Status = RtlDeriveCapabilitySidsFromName(&LeanringModeLoggingCapabilitySidName, SeConstrainedImpersonationCapabilityGroupSid, SeLearningModeLoggingCapabilitySid); 3720 | 3721 | if (!NT_SUCCESS(Status)) 3722 | { 3723 | UninitKnownSIDs(); 3724 | return STATUS_NO_MEMORY; 3725 | } 3726 | 3727 | //SePermissiveLearningModeCapabilitySid 3728 | SePermissiveLearningModeCapabilitySid = ExAllocatePool2(POOL_FLAG_PAGED/* | POOL_FLAG_RAISE_ON_FAILURE*/, RtlLengthRequiredSid(10), SEP_SID_TAG); 3729 | 3730 | if (SePermissiveLearningModeCapabilitySid == NULL) 3731 | { 3732 | UninitKnownSIDs(); 3733 | return STATUS_NO_MEMORY; 3734 | } 3735 | 3736 | Status = RtlDeriveCapabilitySidsFromName(&PermissiveLearningModeCapabilitySidName, SeConstrainedImpersonationCapabilityGroupSid, SePermissiveLearningModeCapabilitySid); 3737 | 3738 | if (!NT_SUCCESS(Status)) 3739 | { 3740 | UninitKnownSIDs(); 3741 | return STATUS_NO_MEMORY; 3742 | } 3743 | 3744 | for (i = 0; i < SE_LPAC_CAPABILITY_COUNT; i++) 3745 | { 3746 | *(PSID*)SeLpacCapabilitySids[i] = ExAllocatePool2(POOL_FLAG_PAGED, RtlLengthRequiredSid(10), SEP_SID_TAG); 3747 | 3748 | if (*SeLpacCapabilitySids[i] == NULL) 3749 | { 3750 | UninitKnownSIDs(); 3751 | return STATUS_NO_MEMORY; 3752 | } 3753 | 3754 | Status = RtlDeriveCapabilitySidsFromName(&LpacCapabilitySidNames[i], SeConstrainedImpersonationCapabilityGroupSid, *SeLpacCapabilitySids[i]); 3755 | 3756 | if (!NT_SUCCESS(Status)) 3757 | { 3758 | UninitKnownSIDs(); 3759 | return STATUS_NO_MEMORY; 3760 | } 3761 | } 3762 | 3763 | 3764 | return STATUS_SUCCESS; 3765 | } 3766 | UNICODE_STRING DirectoryName = RTL_CONSTANT_STRING(L"\\"); 3767 | UNICODE_STRING SymLinkName = RTL_CONSTANT_STRING(L"\\DosDevices"); 3768 | OBJECT_ATTRIBUTES DirectoryOBA = RTL_CONSTANT_OBJECT_ATTRIBUTES(&DirectoryName, OBJ_KERNEL_HANDLE | OBJ_CASE_INSENSITIVE); 3769 | OBJECT_ATTRIBUTES SymlinkOBA = RTL_CONSTANT_OBJECT_ATTRIBUTES(&SymLinkName, OBJ_KERNEL_HANDLE | OBJ_CASE_INSENSITIVE); 3770 | 3771 | NTSTATUS InitKernelSymbols(PVOID Buffer , ULONG Length) 3772 | { 3773 | NTSTATUS Status; 3774 | HANDLE DirectoryHandle, SymbolicLinkHandle; 3775 | PVOID Object; 3776 | 3777 | if (bSystemSymbolInitialized) 3778 | { 3779 | return STATUS_SUCCESS; 3780 | } 3781 | 3782 | if (Length < sizeof(SYSTEM_SYMBOLS_PARAMS)) 3783 | { 3784 | return STATUS_INVALID_PARAMETER; 3785 | } 3786 | 3787 | RtlCopyMemory(&KernelSymbols, Buffer, sizeof(SYSTEM_SYMBOLS_PARAMS)); 3788 | 3789 | Status = ZwOpenDirectoryObject(&DirectoryHandle, DIRECTORY_QUERY, &DirectoryOBA); 3790 | 3791 | if (!NT_SUCCESS(Status)) 3792 | { 3793 | return Status; 3794 | } 3795 | 3796 | Status = ObReferenceObjectByHandle(DirectoryHandle, 0, NULL, KernelMode, &Object, NULL); 3797 | 3798 | if (!NT_SUCCESS(Status)) 3799 | { 3800 | ZwClose(DirectoryHandle); 3801 | return Status; 3802 | } 3803 | 3804 | ObpDirectoryObjectType = ObGetObjectType(Object); 3805 | 3806 | ObDereferenceObject(Object); 3807 | 3808 | ZwClose(DirectoryHandle); 3809 | 3810 | Status = ZwOpenSymbolicLinkObject(&SymbolicLinkHandle, SYMBOLIC_LINK_QUERY, &SymlinkOBA); 3811 | 3812 | if (!NT_SUCCESS(Status)) 3813 | { 3814 | return Status; 3815 | } 3816 | 3817 | Status = ObReferenceObjectByHandle(SymbolicLinkHandle, 0, NULL, KernelMode, &Object, NULL); 3818 | 3819 | if (!NT_SUCCESS(Status)) 3820 | { 3821 | ZwClose(SymbolicLinkHandle); 3822 | return Status; 3823 | } 3824 | 3825 | ObpSymbolicLinkObjectType = ObGetObjectType(Object); 3826 | 3827 | ObDereferenceObject(Object); 3828 | 3829 | ZwClose(SymbolicLinkHandle); 3830 | 3831 | Status = InitKnownSIDs(); 3832 | 3833 | if (!NT_SUCCESS(Status)) 3834 | { 3835 | return Status; 3836 | } 3837 | 3838 | bSystemSymbolInitialized = TRUE; 3839 | 3840 | return STATUS_SUCCESS; 3841 | } 3842 | 3843 | NTSTATUS IrpDispatch(PDEVICE_OBJECT DeviceObject, PIRP pIrp) 3844 | { 3845 | PIO_STACK_LOCATION IrpStack; 3846 | NTSTATUS Status = STATUS_SUCCESS; 3847 | ULONG_PTR Information = 0; 3848 | PLOWBOXTOKEN_PARAMS LowboxTokenParam; 3849 | 3850 | 3851 | UNREFERENCED_PARAMETER(DeviceObject); 3852 | 3853 | IrpStack = IoGetCurrentIrpStackLocation(pIrp); 3854 | 3855 | 3856 | if (IrpStack->MajorFunction == IRP_MJ_DEVICE_CONTROL) 3857 | { 3858 | if (IrpStack->Parameters.DeviceIoControl.IoControlCode == IOCTL_NTCREATELOWBOXTOKEN) 3859 | { 3860 | if (IrpStack->Parameters.DeviceIoControl.InputBufferLength != sizeof(LOWBOXTOKEN_PARAMS)) 3861 | { 3862 | Status = STATUS_INVALID_PARAMETER; 3863 | goto cleanup; 3864 | } 3865 | 3866 | LowboxTokenParam = (PLOWBOXTOKEN_PARAMS)pIrp->AssociatedIrp.SystemBuffer; 3867 | 3868 | if (bSystemSymbolInitialized == FALSE) 3869 | { 3870 | Status = STATUS_NOT_IMPLEMENTED; 3871 | goto cleanup; 3872 | } 3873 | 3874 | Status = NtCreateLowBoxToken(LowboxTokenParam->TokenHandle, 3875 | LowboxTokenParam->ExistingTokenHandle, 3876 | LowboxTokenParam->DesiredAccess, 3877 | LowboxTokenParam->ObjectAttributes, 3878 | LowboxTokenParam->PackageSid, 3879 | LowboxTokenParam->CapabilityCount, 3880 | LowboxTokenParam->Capabilities, 3881 | LowboxTokenParam->HandleCount, 3882 | LowboxTokenParam->Handles); 3883 | } 3884 | else if (IrpStack->Parameters.DeviceIoControl.IoControlCode == IOCTL_GET_SYSTEM_SYMBOLS) 3885 | { 3886 | Status = InitKernelSymbols(pIrp->AssociatedIrp.SystemBuffer, IrpStack->Parameters.DeviceIoControl.InputBufferLength); 3887 | } 3888 | else 3889 | { 3890 | Status = STATUS_NOT_IMPLEMENTED; 3891 | } 3892 | } 3893 | 3894 | cleanup: 3895 | 3896 | pIrp->IoStatus.Status = Status; 3897 | pIrp->IoStatus.Information = Information; 3898 | IoCompleteRequest(pIrp, IO_NO_INCREMENT); 3899 | return Status; 3900 | } 3901 | 3902 | VOID DriverUnload(PDRIVER_OBJECT DriverObject) 3903 | { 3904 | if (DriverObject->DeviceObject) 3905 | IoDeleteDevice(DriverObject->DeviceObject); 3906 | 3907 | IoDeleteSymbolicLink(&DosDeviceName); 3908 | 3909 | UninitKnownSIDs(); 3910 | 3911 | return; 3912 | } 3913 | NTSTATUS DriverEntry(PDRIVER_OBJECT DriverObject, PUNICODE_STRING Registry) 3914 | { 3915 | NTSTATUS Status; 3916 | PDEVICE_OBJECT DeviceObject; 3917 | int i; 3918 | 3919 | UNREFERENCED_PARAMETER(Registry); 3920 | 3921 | Status = IoCreateDevice(DriverObject, 0, &DeviceName, FILE_DEVICE_UNKNOWN, FILE_DEVICE_SECURE_OPEN, TRUE, &DeviceObject); 3922 | 3923 | if (NT_SUCCESS(Status) == FALSE) 3924 | { 3925 | return Status; 3926 | } 3927 | 3928 | 3929 | Status = IoCreateSymbolicLink(&DosDeviceName, &DeviceName); 3930 | 3931 | if (NT_SUCCESS(Status) == FALSE) 3932 | { 3933 | IoDeleteDevice(DeviceObject); 3934 | return Status; 3935 | } 3936 | 3937 | for (i = 0; i <= IRP_MJ_MAXIMUM_FUNCTION; i++) 3938 | { 3939 | DriverObject->MajorFunction[i] = IrpDispatch; 3940 | } 3941 | 3942 | DriverObject->DriverUnload = DriverUnload; 3943 | 3944 | 3945 | return STATUS_SUCCESS; 3946 | 3947 | } 3948 | --------------------------------------------------------------------------------