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zeffy
2017-06-04 12:31:08 -07:00
parent 4cd80518e7
commit f32ca65c54
71 changed files with 1946 additions and 360 deletions
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161
wufuc/core.c Normal file
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#include <Windows.h>
#include <Psapi.h>
#include <TlHelp32.h>
#include <tchar.h>
#include <aclapi.h>
#include <sddl.h>
#include "core.h"
#include "process.h"
#include "service.h"
#include "util.h"
DWORD WINAPI NewThreadProc(LPVOID lpParam) {
SC_HANDLE hSCManager = OpenSCManager(NULL, SERVICES_ACTIVE_DATABASE, SC_MANAGER_CONNECT);
TCHAR lpBinaryPathName[0x8000];
QueryServiceBinaryPathName(hSCManager, _T("wuauserv"), lpBinaryPathName, _countof(lpBinaryPathName));
BOOL result = _tcsicmp(GetCommandLine(), lpBinaryPathName);
CloseServiceHandle(hSCManager);
if (result) {
return 0;
}
SECURITY_ATTRIBUTES sa;
sa.nLength = sizeof(sa);
ConvertStringSecurityDescriptorToSecurityDescriptor(_T("D:PAI(A;;FA;;;BA)"), SDDL_REVISION_1, &(sa.lpSecurityDescriptor), NULL);
sa.bInheritHandle = FALSE;
HANDLE hEvent = CreateEvent(&sa, FALSE, FALSE, _T("Global\\wufuc_UnloadEvent"));
if (!hEvent) {
return 0;
}
HANDLE lphThreads[0x1000];
SIZE_T cb;
SuspendProcess(lphThreads, _countof(lphThreads), &cb);
HMODULE hm = GetModuleHandle(NULL);
DETOUR_IAT(hm, LoadLibraryExA);
DETOUR_IAT(hm, LoadLibraryExW);
DbgPrint("Applied LoadLibraryEx hooks.");
HMODULE hwu = GetModuleHandle(_T("wuaueng.dll"));
if (hwu) {
PatchWUModule(hwu);
}
ResumeAndCloseThreads(lphThreads, cb);
WaitForSingleObject(hEvent, INFINITE);
CloseHandle(hEvent);
DbgPrint("Received wufuc_UnloadEvent, removing hooks.");
SuspendProcess(lphThreads, _countof(lphThreads), &cb);
RESTORE_IAT(hm, LoadLibraryExA);
RESTORE_IAT(hm, LoadLibraryExW);
ResumeAndCloseThreads(lphThreads, cb);
DbgPrint("Unloading library. Cya!");
FreeLibraryAndExitThread(HINST_THISCOMPONENT, 0);
return 0;
}
BOOL IsWUModule(HMODULE hModule) {
TCHAR lpBaseName[MAX_PATH + 1];
GetModuleBaseName(GetCurrentProcess(), hModule, lpBaseName, _countof(lpBaseName));
return !_tcsicmp(lpBaseName, _T("wuaueng.dll"));
}
BOOL PatchWUModule(HMODULE hModule) {
if (!IsWindows7Or8Point1()) {
return FALSE;
}
LPSTR lpszPattern;
SIZE_T n1, n2;
#ifdef _WIN64
lpszPattern =
"FFF3" // push rbx
"4883EC??" // sub rsp,??
"33DB" // xor ebx,ebx
"391D????????" // cmp dword ptr ds:[???????????],ebx
"7508" // jnz $+8
"8B05????????"; // mov eax,dword ptr ds:[???????????]
n1 = 10;
n2 = 18;
#elif defined(_WIN32)
if (IsWindows8Point1()) {
lpszPattern =
"8BFF" // mov edi,edi
"51" // push ecx
"833D????????00" // cmp dword ptr ds:[????????],0
"7507" // jnz $+7
"A1????????"; // mov eax,dword ptr ds:[????????]
n1 = 5;
n2 = 13;
}
else if (IsWindows7()) {
lpszPattern =
"833D????????00" // cmp dword ptr ds:[????????],0
"743E" // je $+3E
"E8????????" // call <wuaueng.IsCPUSupported>
"A3????????"; // mov dword ptr ds:[????????],eax
n1 = 2;
n2 = 15;
}
#else
return FALSE;
#endif
MODULEINFO modinfo;
GetModuleInformation(GetCurrentProcess(), hModule, &modinfo, sizeof(MODULEINFO));
SIZE_T offset;
if (!FindPattern(modinfo.lpBaseOfDll, modinfo.SizeOfImage, lpszPattern, 0, &offset)) {
return FALSE;
}
DbgPrint("IsDeviceServiceable(void) matched at %p", (UINT_PTR)modinfo.lpBaseOfDll + offset);
DWORD *lpdwResultIsNotCachedOffset = (DWORD *)((UINT_PTR)modinfo.lpBaseOfDll + offset + n1);
BOOL *lpbResultIsNotCached = (BOOL *)((UINT_PTR)modinfo.lpBaseOfDll + offset + n1 + sizeof(DWORD) + *lpdwResultIsNotCachedOffset);
if (*lpbResultIsNotCached) {
*lpbResultIsNotCached = FALSE;
DbgPrint("Patched %p=%d", lpbResultIsNotCached, *lpbResultIsNotCached);
}
DWORD *lpdwCachedResultOffset = (DWORD *)((UINT_PTR)modinfo.lpBaseOfDll + offset + n2);
BOOL *lpbCachedResult = (BOOL *)((UINT_PTR)modinfo.lpBaseOfDll + offset + n2 + sizeof(DWORD) + *lpdwCachedResultOffset);
if (!*lpbCachedResult) {
*lpbCachedResult = TRUE;
DbgPrint("Patched %p=%d", lpbCachedResult, *lpbCachedResult);
}
return TRUE;
}
HMODULE WINAPI _LoadLibraryExA(
_In_ LPCSTR lpFileName,
_Reserved_ HANDLE hFile,
_In_ DWORD dwFlags
) {
HMODULE result = LoadLibraryExA(lpFileName, hFile, dwFlags);
if (IsWUModule(result)) {
PatchWUModule(result);
}
return result;
}
HMODULE WINAPI _LoadLibraryExW(
_In_ LPCWSTR lpFileName,
_Reserved_ HANDLE hFile,
_In_ DWORD dwFlags
) {
HMODULE result = LoadLibraryExW(lpFileName, hFile, dwFlags);
if (IsWUModule(result)) {
PatchWUModule(result);
}
return result;
};

17
wufuc/core.h Normal file
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#pragma once
DWORD WINAPI NewThreadProc(LPVOID lpParam);
BOOL PatchWUModule(HMODULE hModule);
HMODULE WINAPI _LoadLibraryExA(
_In_ LPCSTR lpFileName,
_Reserved_ HANDLE hFile,
_In_ DWORD dwFlags
);
HMODULE WINAPI _LoadLibraryExW(
_In_ LPCWSTR lpFileName,
_Reserved_ HANDLE hFile,
_In_ DWORD dwFlags
);

19
wufuc/dllmain.c Normal file
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#include <Windows.h>
#include "core.h"
BOOL APIENTRY DllMain(HMODULE hModule, DWORD ul_reason_for_call, LPVOID lpReserved) {
switch (ul_reason_for_call) {
case DLL_PROCESS_ATTACH:
{
DisableThreadLibraryCalls(hModule);
HANDLE hThread = CreateThread(NULL, 0, NewThreadProc, NULL, 0, NULL);
CloseHandle(hThread);
break;
}
case DLL_PROCESS_DETACH:
break;
default:
break;
}
return TRUE;
}

41
wufuc/entrypoint.c Normal file
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#include <Windows.h>
#include <TlHelp32.h>
#include <tchar.h>
#include "service.h"
#include "process.h"
#include "util.h"
void CALLBACK Rundll32Entry(HWND hwnd, HINSTANCE hinst, LPSTR lpszCmdLine, int nCmdShow) {
HANDLE hEvent = OpenEvent(SYNCHRONIZE, FALSE, _T("Global\\wufuc_UnloadEvent"));
if (hEvent) {
CloseHandle(hEvent);
return;
}
SC_HANDLE hSCManager = OpenSCManager(NULL, SERVICES_ACTIVE_DATABASE, SC_MANAGER_CONNECT);
TCHAR lpGroupName[256];
DWORD dwProcessId;
BOOL result = QueryServiceProcessId(hSCManager, _T("wuauserv"), &dwProcessId);
if (!result && GetServiceGroupName(hSCManager, _T("wuauserv"), lpGroupName, _countof(lpGroupName))) {
result = FindServiceGroupProcessId(hSCManager, lpGroupName, &dwProcessId);
}
CloseServiceHandle(hSCManager);
if (!result) {
return;
}
TCHAR lpLibFileName[MAX_PATH + 1];
GetModuleFileName(HINST_THISCOMPONENT, lpLibFileName, _countof(lpLibFileName));
HANDLE hProcess = OpenProcess(PROCESS_ALL_ACCESS, FALSE, dwProcessId);
InjectLibrary(hProcess, lpLibFileName, _countof(lpLibFileName));
CloseHandle(hProcess);
}
void CALLBACK Rundll32Unload(HWND hwnd, HINSTANCE hinst, LPSTR lpszCmdLine, int nCmdShow) {
HANDLE hEvent = OpenEvent(EVENT_MODIFY_STATE, FALSE, _T("Global\\wufuc_UnloadEvent"));
if (hEvent) {
DbgPrint("Setting wufuc_UnloadEvent...");
SetEvent(hEvent);
CloseHandle(hEvent);
}
}

3
wufuc/exports.def Normal file
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EXPORTS
Rundll32Entry
Rundll32Unload

674
wufuc/install/COPYING.txt Normal file
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GNU GENERAL PUBLIC LICENSE
Version 3, 29 June 2007
Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
Everyone is permitted to copy and distribute verbatim copies
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give under the previous paragraph, plus a right to possession of the
Corresponding Source of the work from the predecessor in interest, if
the predecessor has it or can get it with reasonable efforts.
You may not impose any further restrictions on the exercise of the
rights granted or affirmed under this License. For example, you may
not impose a license fee, royalty, or other charge for exercise of
rights granted under this License, and you may not initiate litigation
(including a cross-claim or counterclaim in a lawsuit) alleging that
any patent claim is infringed by making, using, selling, offering for
sale, or importing the Program or any portion of it.
11. Patents.
A "contributor" is a copyright holder who authorizes use under this
License of the Program or a work on which the Program is based. The
work thus licensed is called the contributor's "contributor version".
A contributor's "essential patent claims" are all patent claims
owned or controlled by the contributor, whether already acquired or
hereafter acquired, that would be infringed by some manner, permitted
by this License, of making, using, or selling its contributor version,
but do not include claims that would be infringed only as a
consequence of further modification of the contributor version. For
purposes of this definition, "control" includes the right to grant
patent sublicenses in a manner consistent with the requirements of
this License.
Each contributor grants you a non-exclusive, worldwide, royalty-free
patent license under the contributor's essential patent claims, to
make, use, sell, offer for sale, import and otherwise run, modify and
propagate the contents of its contributor version.
In the following three paragraphs, a "patent license" is any express
agreement or commitment, however denominated, not to enforce a patent
(such as an express permission to practice a patent or covenant not to
sue for patent infringement). To "grant" such a patent license to a
party means to make such an agreement or commitment not to enforce a
patent against the party.
If you convey a covered work, knowingly relying on a patent license,
and the Corresponding Source of the work is not available for anyone
to copy, free of charge and under the terms of this License, through a
publicly available network server or other readily accessible means,
then you must either (1) cause the Corresponding Source to be so
available, or (2) arrange to deprive yourself of the benefit of the
patent license for this particular work, or (3) arrange, in a manner
consistent with the requirements of this License, to extend the patent
license to downstream recipients. "Knowingly relying" means you have
actual knowledge that, but for the patent license, your conveying the
covered work in a country, or your recipient's use of the covered work
in a country, would infringe one or more identifiable patents in that
country that you have reason to believe are valid.
If, pursuant to or in connection with a single transaction or
arrangement, you convey, or propagate by procuring conveyance of, a
covered work, and grant a patent license to some of the parties
receiving the covered work authorizing them to use, propagate, modify
or convey a specific copy of the covered work, then the patent license
you grant is automatically extended to all recipients of the covered
work and works based on it.
A patent license is "discriminatory" if it does not include within
the scope of its coverage, prohibits the exercise of, or is
conditioned on the non-exercise of one or more of the rights that are
specifically granted under this License. You may not convey a covered
work if you are a party to an arrangement with a third party that is
in the business of distributing software, under which you make payment
to the third party based on the extent of your activity of conveying
the work, and under which the third party grants, to any of the
parties who would receive the covered work from you, a discriminatory
patent license (a) in connection with copies of the covered work
conveyed by you (or copies made from those copies), or (b) primarily
for and in connection with specific products or compilations that
contain the covered work, unless you entered into that arrangement,
or that patent license was granted, prior to 28 March 2007.
Nothing in this License shall be construed as excluding or limiting
any implied license or other defenses to infringement that may
otherwise be available to you under applicable patent law.
12. No Surrender of Others' Freedom.
If conditions are imposed on you (whether by court order, agreement or
otherwise) that contradict the conditions of this License, they do not
excuse you from the conditions of this License. If you cannot convey a
covered work so as to satisfy simultaneously your obligations under this
License and any other pertinent obligations, then as a consequence you may
not convey it at all. For example, if you agree to terms that obligate you
to collect a royalty for further conveying from those to whom you convey
the Program, the only way you could satisfy both those terms and this
License would be to refrain entirely from conveying the Program.
13. Use with the GNU Affero General Public License.
Notwithstanding any other provision of this License, you have
permission to link or combine any covered work with a work licensed
under version 3 of the GNU Affero General Public License into a single
combined work, and to convey the resulting work. The terms of this
License will continue to apply to the part which is the covered work,
but the special requirements of the GNU Affero General Public License,
section 13, concerning interaction through a network will apply to the
combination as such.
14. Revised Versions of this License.
The Free Software Foundation may publish revised and/or new versions of
the GNU General Public License from time to time. Such new versions will
be similar in spirit to the present version, but may differ in detail to
address new problems or concerns.
Each version is given a distinguishing version number. If the
Program specifies that a certain numbered version of the GNU General
Public License "or any later version" applies to it, you have the
option of following the terms and conditions either of that numbered
version or of any later version published by the Free Software
Foundation. If the Program does not specify a version number of the
GNU General Public License, you may choose any version ever published
by the Free Software Foundation.
If the Program specifies that a proxy can decide which future
versions of the GNU General Public License can be used, that proxy's
public statement of acceptance of a version permanently authorizes you
to choose that version for the Program.
Later license versions may give you additional or different
permissions. However, no additional obligations are imposed on any
author or copyright holder as a result of your choosing to follow a
later version.
15. Disclaimer of Warranty.
THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
16. Limitation of Liability.
IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
SUCH DAMAGES.
17. Interpretation of Sections 15 and 16.
If the disclaimer of warranty and limitation of liability provided
above cannot be given local legal effect according to their terms,
reviewing courts shall apply local law that most closely approximates
an absolute waiver of all civil liability in connection with the
Program, unless a warranty or assumption of liability accompanies a
copy of the Program in return for a fee.
END OF TERMS AND CONDITIONS
How to Apply These Terms to Your New Programs
If you develop a new program, and you want it to be of the greatest
possible use to the public, the best way to achieve this is to make it
free software which everyone can redistribute and change under these terms.
To do so, attach the following notices to the program. It is safest
to attach them to the start of each source file to most effectively
state the exclusion of warranty; and each file should have at least
the "copyright" line and a pointer to where the full notice is found.
<one line to give the program's name and a brief idea of what it does.>
Copyright (C) <year> <name of author>
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
Also add information on how to contact you by electronic and paper mail.
If the program does terminal interaction, make it output a short
notice like this when it starts in an interactive mode:
<program> Copyright (C) <year> <name of author>
This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
This is free software, and you are welcome to redistribute it
under certain conditions; type `show c' for details.
The hypothetical commands `show w' and `show c' should show the appropriate
parts of the General Public License. Of course, your program's commands
might be different; for a GUI interface, you would use an "about box".
You should also get your employer (if you work as a programmer) or school,
if any, to sign a "copyright disclaimer" for the program, if necessary.
For more information on this, and how to apply and follow the GNU GPL, see
<http://www.gnu.org/licenses/>.
The GNU General Public License does not permit incorporating your program
into proprietary programs. If your program is a subroutine library, you
may consider it more useful to permit linking proprietary applications with
the library. If this is what you want to do, use the GNU Lesser General
Public License instead of this License. But first, please read
<http://www.gnu.org/philosophy/why-not-lgpl.html>.

132
wufuc/install/install_wufuc.bat Normal file
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@echo off
title wufuc installer - v0.6
:: Copyright (C) 2017 zeffy
:: This program is free software: you can redistribute it and/or modify
:: it under the terms of the GNU General Public License as published by
:: the Free Software Foundation, either version 3 of the License, or
:: (at your option) any later version.
:: This program is distributed in the hope that it will be useful,
:: but WITHOUT ANY WARRANTY; without even the implied warranty of
:: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
:: GNU General Public License for more details.
:: You should have received a copy of the GNU General Public License
:: along with this program. If not, see <http://www.gnu.org/licenses/>.
echo Copyright (C) 2017 zeffy
echo This program comes with ABSOLUTELY NO WARRANTY.
echo This is free software, and you are welcome to redistribute it
echo under certain conditions; see COPYING.txt for details.
echo.
fltmc >nul 2>&1 || (
echo This batch script requires administrator privileges. Right-click on
echo %~nx0 and select "Run as administrator".
goto :die
)
echo Checking system requirements...
if /I "%PROCESSOR_ARCHITECTURE%"=="AMD64" (
goto :is_x64
) else (
if /I "%PROCESSOR_ARCHITEW6432%"=="AMD64" (
goto :is_x64
)
if /I "%PROCESSOR_ARCHITECTURE%"=="x86" (
set "WINDOWS_ARCHITECTURE=x86"
set "wufuc_dll=%~dp0wufuc32.dll"
goto :check_ver
)
)
goto :unsupported_os
:is_x64
set "WINDOWS_ARCHITECTURE=x64"
set "wufuc_dll=%~dp0wufuc64.dll"
:check_ver
wmic /output:stdout os get version | findstr "^6\.1\." >nul && (
set "WINDOWS_VER=6.1"
set "SUPPORTED_HOTFIXES=KB4019265 KB4019264 KB4015552 KB4015549 KB4015546 KB4012218"
echo Detected supported operating system: Windows 7 %WINDOWS_ARCHITECTURE%
goto :check_hotfix
)
wmic /output:stdout os get version | findstr "^6\.3\." >nul && (
set "WINDOWS_VER=8.1"
set "SUPPORTED_HOTFIXES=KB4019217 KB4019215 KB4015553 KB4015550 KB4015547 KB4012219"
echo Detected supported operating system: Windows 8.1 %WINDOWS_ARCHITECTURE%
goto :check_hotfix
)
:unsupported_os
echo Detected that you are using an unsupported operating system.
echo.
echo This patch only works on the following versions of Windows:
echo.
echo - Windows 7 (x64 and x86)
echo - Windows 8.1 (x64 and x86)
echo - Windows Server 2008 R2
echo - Windows Server 2012 R2
goto :die
:check_hotfix
for %%a in (%SUPPORTED_HOTFIXES%) do (
wmic /output:stdout qfe get hotfixid | find "%%a" >nul && (
set "INSTALLED_HOTFIX=%%a"
echo Detected installed supported update: %%a
goto :confirmation
)
)
echo.
echo Warning - Detected that no supported updates are installed!
echo.
echo This can be a false warning, if you are sure you know you need wufuc you
echo can continue (there will be no side effects even if you don't need it)
set /p CONTINUE=Enter 'Y' if you still want to continue:
if /I not "%CONTINUE%"=="Y" goto :cancel
:confirmation
echo.
echo wufuc disables the "Unsupported Hardware" message in Windows Update,
echo and allows you to continue installing updates on Windows 7 and 8.1
echo systems with Intel Kaby Lake, AMD Ryzen, or other unsupported processors.
echo.
set /p CONTINUE=Enter 'Y' if you want to install wufuc:
if /I not "%CONTINUE%"=="Y" goto :cancel
echo.
:install
set "wufuc_task=wufuc.{72EEE38B-9997-42BD-85D3-2DD96DA17307}"
schtasks /Create /XML "%~dp0wufuc.xml" /TN "%wufuc_task%" /F
echo %ERRORLEVEL%
schtasks /Change /TN "%wufuc_task%" /TR "'%systemroot%\system32\rundll32.exe' """%wufuc_dll%""",Rundll32Entry"
echo %ERRORLEVEL%
schtasks /Change /TN "%wufuc_task%" /ENABLE
echo %ERRORLEVEL%
rundll32 "%wufuc_dll%",Rundll32Unload
echo %ERRORLEVEL%
schtasks /Run /TN "%wufuc_task%"
echo %ERRORLEVEL%
echo.
echo Installed and started wufuc!
goto :die
:die
echo.
echo Press any key to exit...
pause >nul
exit
:cancel
echo.
echo Canceled by user, press any key to exit...
pause >nul
exit

71
wufuc/install/uninstall_wufuc.bat Normal file
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@@ -0,0 +1,71 @@
@echo off
title wufuc uninstaller - v0.6
:: Copyright (C) 2017 zeffy
:: This program is free software: you can redistribute it and/or modify
:: it under the terms of the GNU General Public License as published by
:: the Free Software Foundation, either version 3 of the License, or
:: (at your option) any later version.
:: This program is distributed in the hope that it will be useful,
:: but WITHOUT ANY WARRANTY; without even the implied warranty of
:: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
:: GNU General Public License for more details.
:: You should have received a copy of the GNU General Public License
:: along with this program. If not, see <http://www.gnu.org/licenses/>.
echo Copyright (C) 2017 zeffy
echo This program comes with ABSOLUTELY NO WARRANTY.
echo This is free software, and you are welcome to redistribute it
echo under certain conditions; see COPYING.txt for details.
echo.
fltmc >nul 2>&1 || (
echo This batch script requires administrator privileges. Right-click on
echo %~nx0 and select "Run as administrator".
goto :die
)
if /I "%PROCESSOR_ARCHITECTURE%"=="AMD64" (
goto :is_x64
) else (
if /I "%PROCESSOR_ARCHITEW6432%"=="AMD64" (
goto :is_x64
)
if /I "%PROCESSOR_ARCHITECTURE%"=="x86" (
set "WINDOWS_ARCHITECTURE=x86"
set "wufuc_dll=%~dp0wufuc32.dll"
goto :confirmation
)
)
goto :die
:is_x64
set "WINDOWS_ARCHITECTURE=x64"
set "wufuc_dll=%~dp0wufuc64.dll"
:confirmation
set /p CONTINUE=Enter 'Y' if you want to uninstall wufuc:
if /I not "%CONTINUE%"=="Y" goto :cancel
echo.
:uninstall
set "wufuc_task=wufuc.{72EEE38B-9997-42BD-85D3-2DD96DA17307}"
rundll32 "%wufuc_dll%",Rundll32Unload
schtasks /Delete /TN "%wufuc_task%" /F
echo.
echo Unloaded and uninstalled wufuc!
:die
echo.
echo Press any key to exit...
pause >nul
exit
:cancel
echo.
echo Canceled by user, press any key to exit...
pause >nul
exit

BIN
wufuc/install/wufuc.xml Normal file
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139
wufuc/process.c Normal file
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#include <windows.h>
#include <stdio.h>
#include <TlHelp32.h>
#include <tchar.h>
#include "util.h"
#include "process.h"
VOID DetourIAT(HMODULE hModule, LPSTR lpFuncName, LPVOID *lpOldAddress, LPVOID lpNewAddress) {
LPVOID *lpAddress = FindIAT(hModule, lpFuncName);
if (!lpAddress || *lpAddress == lpNewAddress) {
return;
}
DWORD flOldProtect;
DWORD flNewProtect = PAGE_READWRITE;
VirtualProtect(lpAddress, sizeof(LPVOID), flNewProtect, &flOldProtect);
if (lpOldAddress) {
*lpOldAddress = *lpAddress;
}
DbgPrint("%S %p => %p", lpFuncName, *lpAddress, lpNewAddress);
*lpAddress = lpNewAddress;
VirtualProtect(lpAddress, sizeof(LPVOID), flOldProtect, &flNewProtect);
}
LPVOID *FindIAT(HMODULE hModule, LPSTR lpFuncName) {
PIMAGE_DOS_HEADER dos = (PIMAGE_DOS_HEADER)hModule;
PIMAGE_NT_HEADERS nt = (PIMAGE_NT_HEADERS)((LPBYTE)dos + dos->e_lfanew);
PIMAGE_IMPORT_DESCRIPTOR desc = (PIMAGE_IMPORT_DESCRIPTOR)((LPBYTE)dos + nt->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_IMPORT].VirtualAddress);
for (PIMAGE_IMPORT_DESCRIPTOR iid = desc; iid->Name != 0; iid++) {
for (int i = 0; *(i + (LPVOID*)(iid->FirstThunk + (SIZE_T)hModule)) != NULL; i++) {
LPSTR name = (LPSTR)(*(i + (SIZE_T*)(iid->OriginalFirstThunk + (SIZE_T)hModule)) + (SIZE_T)hModule + 2);
const uintptr_t n = (uintptr_t)name;
if (!(n & (sizeof(n) == 4 ? 0x80000000 : 0x8000000000000000)) && !_stricmp(lpFuncName, name)) {
return i + (LPVOID*)(iid->FirstThunk + (SIZE_T)hModule);
}
}
}
return NULL;
}
BOOL FindPattern(LPCBYTE lpBytes, SIZE_T nNumberOfBytes, LPSTR lpszPattern, SIZE_T nStart, SIZE_T *lpOffset) {
SIZE_T nPatternLength = strlen(lpszPattern);
SIZE_T nMaskLength = nPatternLength / 2;
if (nMaskLength > nNumberOfBytes || nPatternLength % 2) {
return FALSE;
}
LPBYTE lpPattern = malloc(nMaskLength * sizeof(BYTE));
BOOL *lpbMask = malloc(nMaskLength * sizeof(BOOL));
LPSTR p = lpszPattern;
BOOL valid = TRUE;
for (SIZE_T i = 0; i < nMaskLength; i++) {
if (lpbMask[i] = strncmp(p, "??", 2)) {
if (sscanf_s(p, "%2hhx", &lpPattern[i]) != 1) {
valid = FALSE;
break;
}
}
p += 2;
}
BOOL result = FALSE;
if (valid) {
for (SIZE_T i = nStart; i < nNumberOfBytes - nStart - (nMaskLength - 1); i++) {
BOOL found = TRUE;
for (SIZE_T j = 0; j < nMaskLength; j++) {
if (lpbMask[j] && lpBytes[i + j] != lpPattern[j]) {
found = FALSE;
break;
}
}
if (found) {
*lpOffset = i;
result = TRUE;
break;
}
}
}
free(lpPattern);
free(lpbMask);
return result;
}
BOOL InjectLibrary(HANDLE hProcess, LPCTSTR lpLibFileName, DWORD cb) {
LPVOID lpBaseAddress = VirtualAllocEx(hProcess, NULL, cb, MEM_RESERVE | MEM_COMMIT, PAGE_READWRITE);
if (!WriteProcessMemory(hProcess, lpBaseAddress, lpLibFileName, cb, NULL)) {
return FALSE;
}
DWORD dwProcessId = GetProcessId(hProcess);
HANDLE hSnap = CreateToolhelp32Snapshot(TH32CS_SNAPMODULE, dwProcessId);
MODULEENTRY32 me;
me.dwSize = sizeof(me);
Module32First(hSnap, &me);
do {
if (!_tcsicmp(me.szModule, _T("kernel32.dll"))) {
break;
}
} while (Module32Next(hSnap, &me));
CloseHandle(hSnap);
DbgPrint("Injecting %s into process %d", lpLibFileName, dwProcessId);
HANDLE hThread = CreateRemoteThread(hProcess, NULL, 0, (LPTHREAD_START_ROUTINE)GetProcAddress(me.hModule, _CRT_STRINGIZE(LoadLibrary)), lpBaseAddress, 0, NULL);
CloseHandle(hThread);
return TRUE;
}
VOID SuspendProcess(HANDLE *lphThreads, SIZE_T dwSize, SIZE_T *lpcb) {
HANDLE hSnap = CreateToolhelp32Snapshot(TH32CS_SNAPTHREAD, 0);
THREADENTRY32 te;
te.dwSize = sizeof(te);
Thread32First(hSnap, &te);
DWORD dwProcessId = GetCurrentProcessId();
DWORD dwThreadId = GetCurrentThreadId();
SIZE_T count = 0;
do {
if (te.th32OwnerProcessID != dwProcessId || te.th32ThreadID == dwThreadId) {
continue;
}
lphThreads[count] = OpenThread(THREAD_SUSPEND_RESUME, FALSE, te.th32ThreadID);
SuspendThread(lphThreads[count]);
count++;
} while (count < dwSize && Thread32Next(hSnap, &te));
CloseHandle(hSnap);
*lpcb = count;
DbgPrint("Suspended other threads.");
}
VOID ResumeAndCloseThreads(HANDLE *lphThreads, SIZE_T cb) {
for (SIZE_T i = 0; i < cb; i++) {
ResumeThread(lphThreads[i]);
CloseHandle(lphThreads[i]);
}
DbgPrint("Resumed threads.");
}

20
wufuc/process.h Normal file
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@@ -0,0 +1,20 @@
#pragma once
VOID DetourIAT(HMODULE hModule, LPSTR lpFuncName, LPVOID *lpOldAddress, LPVOID lpNewAddress);
#define DETOUR_IAT(x, y) \
LPVOID __LPORIGINAL##y; \
DetourIAT(x, #y, &__LPORIGINAL##y, &_##y)
#define RESTORE_IAT(x, y) \
DetourIAT(x, #y, NULL, __LPORIGINAL##y)
LPVOID *FindIAT(HMODULE hModule, LPSTR lpFuncName);
BOOL FindPattern(LPCBYTE lpBytes, SIZE_T nNumberOfBytes, LPSTR lpszPattern, SIZE_T nStart, SIZE_T *lpOffset);
BOOL InjectLibrary(HANDLE hProcess, LPCTSTR lpLibFileName, DWORD cb);
VOID SuspendProcess(HANDLE *lphThreads, SIZE_T dwSize, SIZE_T *lpcb);
VOID ResumeAndCloseThreads(HANDLE *lphThreads, SIZE_T dwSize);

15
wufuc/resource.h Normal file
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@@ -0,0 +1,15 @@
//{{NO_DEPENDENCIES}}
// Microsoft Visual C++ generated include file.
// Used by version.rc
//
// Next default values for new objects
//
#ifdef APSTUDIO_INVOKED
#ifndef APSTUDIO_READONLY_SYMBOLS
#define _APS_NEXT_RESOURCE_VALUE 101
#define _APS_NEXT_COMMAND_VALUE 40001
#define _APS_NEXT_CONTROL_VALUE 1000
#define _APS_NEXT_SYMED_VALUE 101
#endif
#endif

97
wufuc/service.c Normal file
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@@ -0,0 +1,97 @@
#include <windows.h>
#include <tchar.h>
#include "util.h"
#include "service.h"
BOOL QueryServiceBinaryPathName(SC_HANDLE hSCManager, LPCTSTR lpServiceName, LPTSTR lpBinaryPathName, SIZE_T dwSize) {
HANDLE hService = OpenService(hSCManager, lpServiceName, SERVICE_QUERY_CONFIG);
if (!hService) {
return FALSE;
}
DWORD cbBytesNeeded;
QueryServiceConfig(hService, NULL, 0, &cbBytesNeeded);
LPQUERY_SERVICE_CONFIG sc = malloc(cbBytesNeeded);
BOOL result = QueryServiceConfig(hService, sc, cbBytesNeeded, &cbBytesNeeded);
int a = GetLastError();
CloseServiceHandle(hService);
if (result) {
_tcscpy_s(lpBinaryPathName, dwSize, sc->lpBinaryPathName);
}
LocalFree(sc);
return result;
}
BOOL QueryServiceProcessId(SC_HANDLE hSCManager, LPCTSTR lpServiceName, DWORD *lpdwProcessId) {
SC_HANDLE hService = OpenService(hSCManager, lpServiceName, SERVICE_QUERY_STATUS);
if (!hService) {
return FALSE;
}
SERVICE_STATUS_PROCESS lpBuffer;
DWORD cbBytesNeeded;
BOOL result = FALSE;
if (QueryServiceStatusEx(hService, SC_STATUS_PROCESS_INFO, (LPBYTE)&lpBuffer, sizeof(lpBuffer), &cbBytesNeeded) && lpBuffer.dwProcessId) {
*lpdwProcessId = lpBuffer.dwProcessId;
result = TRUE;
DbgPrint("Found %s pid %d", lpServiceName, *lpdwProcessId);
}
CloseServiceHandle(hService);
return result;
}
BOOL GetServiceGroupName(SC_HANDLE hSCManager, LPCTSTR lpServiceName, LPTSTR lpGroupName, SIZE_T dwSize) {
TCHAR lpBinaryPathName[0x8000];
if (!QueryServiceBinaryPathName(hSCManager, lpServiceName, lpBinaryPathName, _countof(lpBinaryPathName))) {
return FALSE;
}
int numArgs;
LPWSTR *argv = CommandLineToArgv(lpBinaryPathName, &numArgs);
if (numArgs < 3) {
return FALSE;
}
TCHAR fname[_MAX_FNAME];
_tsplitpath_s(argv[0], NULL, 0, NULL, 0, fname, _countof(fname), NULL, 0);
BOOL result = FALSE;
if (!_tcsicmp(fname, _T("svchost"))) {
LPWSTR *p = argv;
for (int i = 0; i + 1 < numArgs; i++) {
if (!_tcsicmp(*(p++), _T("-k"))) {
_tcscpy_s(lpGroupName, dwSize, *p);
result = TRUE;
DbgPrint("Found %s svc group: %s", lpServiceName, lpGroupName);
break;
}
}
}
return result;
}
BOOL FindServiceGroupProcessId(SC_HANDLE hSCManager, LPTSTR lpServiceGroupName, DWORD *lpdwProcessId) {
DWORD uBytes = 0x100000;
LPBYTE pvData = malloc(uBytes);
RegGetValue(HKEY_LOCAL_MACHINE, _T("SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\Svchost"), lpServiceGroupName, RRF_RT_REG_MULTI_SZ, NULL, pvData, &uBytes);
LPTSTR ptr = (LPTSTR)pvData;
BOOL result = FALSE;
while (*ptr) {
DWORD dwProcessId;
if (QueryServiceProcessId(hSCManager, ptr, &dwProcessId)) {
TCHAR group[256];
GetServiceGroupName(hSCManager, ptr, group, _countof(group));
result = !_tcsicmp(group, lpServiceGroupName);
}
if (result) {
DbgPrint("Found %s pid %d", lpServiceGroupName, dwProcessId);
*lpdwProcessId = dwProcessId;
break;
}
ptr += _tcslen(ptr) + 1;
}
LocalFree(pvData);
return result;
}

9
wufuc/service.h Normal file
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@@ -0,0 +1,9 @@
#pragma once
BOOL QueryServiceBinaryPathName(SC_HANDLE hSCManager, LPCTSTR lpServiceName, LPTSTR lpBinaryPathName, SIZE_T dwSize);
BOOL QueryServiceProcessId(SC_HANDLE hSCManager, LPCTSTR lpServiceName, DWORD *lpdwProcessId);
BOOL GetServiceGroupName(SC_HANDLE hSCManager, LPCTSTR lpServiceName, LPTSTR lpGroupName, SIZE_T dwSize);
BOOL FindServiceGroupProcessId(SC_HANDLE hSCManager, LPTSTR lpServiceGroupName, DWORD *lpdwProcessId);

27
wufuc/util.c Normal file
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@@ -0,0 +1,27 @@
#include <Windows.h>
#include <VersionHelpers.h>
#include <tchar.h>
#include "util.h"
BOOL IsWindows7Or8Point1(void) {
return IsWindows7() || IsWindows8Point1();
}
BOOL IsWindows7(void) {
return IsWindows7OrGreater() && !IsWindows8OrGreater();
}
BOOL IsWindows8Point1(void) {
return IsWindows8Point1OrGreater() && !IsWindows10OrGreater();
}
//#ifdef _DEBUG
VOID _DbgPrint(LPCTSTR format, ...) {
TCHAR buffer[0x1000];
va_list argptr;
va_start(argptr, format);
_vstprintf_s(buffer, _countof(buffer), format, argptr);
va_end(argptr);
OutputDebugString(buffer);
}
//#endif

24
wufuc/util.h Normal file
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@@ -0,0 +1,24 @@
#pragma once
EXTERN_C IMAGE_DOS_HEADER __ImageBase;
#define HINST_THISCOMPONENT ((HINSTANCE)&__ImageBase)
BOOL IsWindows7Or8Point1(void);
BOOL IsWindows7(void);
BOOL IsWindows8Point1(void);
//#ifdef _DEBUG
VOID _DbgPrint(LPCTSTR format, ...);
#define DbgPrint(format, ...) \
_DbgPrint(_T(__FUNCTION__) _T(": ") _T(format), ##__VA_ARGS__)
//#else
//#define DbgPrint(format, ...)
//#endif
#ifdef UNICODE
#define CommandLineToArgv CommandLineToArgvW
#else
#define CommandLineToArgv CommandLineToArgvA
#endif // !UNICODE

BIN
wufuc/version.rc Normal file
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Binary file not shown.

190
wufuc/wufuc.vcxproj Normal file
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@@ -0,0 +1,190 @@
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