include vc redist and wuaueng.dll repair script
This commit is contained in:
zeffy
23
README.md
23
README.md
@@ -16,9 +16,9 @@ There have even been people with older Intel and AMD systems who have been locke
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## Bad Microsoft!
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<sup>If you are interested, you can read my original write up on discovering the CPU check [here](../../tree/old-kb4012218-19).</sup>
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If you are interested, you can read my original write up on discovering the CPU check [here](../../tree/old-kb4012218-19).
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Basically, inside a file called `wuaueng.dll` there are two functions: [`IsDeviceServiceable(void)`](https://gist.github.com/zeffy/e5ec266952932bc905eb0cbc6ed72185) and [`IsCPUSupported(void)`](https://gist.github.com/zeffy/1a8f8984d2bec97ae24af63a76278694). `IsDeviceServiceable(void)` is essentially a wrapper around `IsCPUSupported(void)` that caches the result it recieves and returns it on subsequent calls.
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Basically, inside a file called `wuaueng.dll` there are two functions: [`IsDeviceServiceable(void)`](https://gist.github.com/zeffy/e5ec266952932bc905eb0cbc6ed72185) and [`IsCPUSupported(void)`](https://gist.github.com/zeffy/1a8f8984d2bec97ae24af63a76278694). `IsDeviceServiceable(void)` is essentially a wrapper around `IsCPUSupported(void)` that caches the result it recieves and recycles it on subsequent calls.
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My patch takes advantage of this result caching behavior by setting the "hasn't run once" value to `FALSE` and the cached result to `TRUE`.
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@@ -28,4 +28,21 @@ My patch takes advantage of this result caching behavior by setting the "hasn't
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- `wufuc` determines what service host process the Windows Update service (`wuauserv`) runs in, and injects itself into it.
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- Once injected, it applies a hook to `LoadLibraryEx` that automatically patches `wuaueng.dll` when it is loaded.
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- Any previously loaded `wuaueng.dll` is also patched.
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- **No system files are modified!**
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### Several improvements over my script-based approach:
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- **No system files are modified!***
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- Heuristic byte signature patching persists over new updates.
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- C is best language.
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- No external dependencies except for Microsoft Visual C++ 2015 Redistributable.
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### How to install/uninstall?
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Just run move the `wufuc` folder to wherever you want and run `install_wufuc.bat` as administrator.
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To uninstall run `uninstall_wufuc.bat` as administrator.
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To temporarily disable the patch, just go to the Task Scheduler and disable the `wufuc.{ ... }` task, then restart your computer.
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### How do I remove your old patch and use this instead?
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I've included a utility script called `repair_wuaueng.dll.bat` that will initiate an sfc scan and attempt to automatically revert any changes made to `wuaueng.dll`.
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@@ -82,9 +82,9 @@ for %%a in (%SUPPORTED_HOTFIXES%) do (
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)
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echo.
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echo Warning - Detected that no supported updates are installed!
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echo WARNING - Detected that no supported updates are installed!
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echo.
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echo This can be a false warning, if you are sure you know you need wufuc you
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echo This can be a false warning, if you are certain that need wufuc then you
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echo can continue (there will be no side effects even if you don't need it)
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set /p CONTINUE=Enter 'Y' if you still want to continue:
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@@ -101,18 +101,26 @@ set /p CONTINUE=Enter 'Y' if you want to install wufuc:
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if /I not "%CONTINUE%"=="Y" goto :cancel
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echo.
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set "vcredist_path=%~dp0_Redist\vcredist_%WINDOWS_ARCHITECTURE%.exe"
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if exist "%vcredist_path%" (
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echo Installing Microsoft Visual C^+^+ 2017 Redistributable ^(%WINDOWS_ARCHITECTURE%^)...
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"%vcredist_path%" /passive /norestart
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goto :install
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)
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echo Couldn't locate and install Microsoft Visual C^+^+ 2017 Redistributable ^(%WINDOWS_ARCHITECTURE%^).
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set /p CONTINUE=Enter 'Y' if you still want to continue:
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if /I not "%CONTINUE%"=="Y" goto :cancel
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echo.
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:install
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set "wufuc_task=wufuc.{72EEE38B-9997-42BD-85D3-2DD96DA17307}"
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schtasks /Create /XML "%~dp0wufuc.xml" /TN "%wufuc_task%" /F
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echo %ERRORLEVEL%
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schtasks /Change /TN "%wufuc_task%" /TR "'%systemroot%\system32\rundll32.exe' """%wufuc_dll%""",Rundll32Entry"
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echo %ERRORLEVEL%
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schtasks /Change /TN "%wufuc_task%" /ENABLE
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echo %ERRORLEVEL%
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rundll32 "%wufuc_dll%",Rundll32Unload
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echo %ERRORLEVEL%
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schtasks /Run /TN "%wufuc_task%"
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echo %ERRORLEVEL%
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echo.
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echo Installed and started wufuc!
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@@ -129,4 +137,4 @@ exit
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echo.
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echo Canceled by user, press any key to exit...
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pause >nul
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exit
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exit
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51
install/repair_wuaueng.dll.bat
Normal file
51
install/repair_wuaueng.dll.bat
Normal file
@@ -0,0 +1,51 @@
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@echo off
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title install wufuc (repair wuaueng.dll) - v0.6
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:: Copyright (C) 2017 zeffy
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:: This program is free software: you can redistribute it and/or modify
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:: it under the terms of the GNU General Public License as published by
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:: the Free Software Foundation, either version 3 of the License, or
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:: (at your option) any later version.
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:: This program is distributed in the hope that it will be useful,
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:: but WITHOUT ANY WARRANTY; without even the implied warranty of
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:: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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:: GNU General Public License for more details.
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:: You should have received a copy of the GNU General Public License
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:: along with this program. If not, see <http://www.gnu.org/licenses/>.
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echo Copyright (C) 2017 zeffy
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echo This program comes with ABSOLUTELY NO WARRANTY.
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echo This is free software, and you are welcome to redistribute it
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echo under certain conditions; see COPYING.txt for details.
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echo.
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fltmc >nul 2>&1 || (
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echo This batch script requires administrator privileges. Right-click on
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echo %~nx0 and select "Run as administrator".
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goto :die
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)
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:confirmation
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echo You may want to use this script if you previously modified wuaueng.dll
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echo with "aio-wuaueng.dll-patch.bat" or by other means.
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echo.
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echo This will run the sfc utility and it will restore any changes that were made.
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set /p CONTINUE=Enter 'Y' if you want to repair wuaueng.dll:
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if /I not "%CONTINUE%"=="Y" goto :cancel
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sfc /SCANFILE="%systemroot%\System32\wuaueng.dll"
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:die
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echo.
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echo Press any key to exit...
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pause >nul
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exit
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:cancel
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echo.
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echo Canceled by user, press any key to exit...
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pause >nul
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exit
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@@ -68,4 +68,4 @@ exit
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echo.
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echo Canceled by user, press any key to exit...
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pause >nul
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exit
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exit
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