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include vc redist and wuaueng.dll repair script

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zeffy
2017-06-04 13:33:13 -07:00
parent 9ceec98964
commit 2276f86a04
4 changed files with 88 additions and 12 deletions
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README.md
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@@ -16,9 +16,9 @@ There have even been people with older Intel and AMD systems who have been locke
## Bad Microsoft!
<sup>If you are interested, you can read my original write up on discovering the CPU check [here](../../tree/old-kb4012218-19).</sup>
If you are interested, you can read my original write up on discovering the CPU check [here](../../tree/old-kb4012218-19).
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.
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.
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`.
@@ -28,4 +28,21 @@ My patch takes advantage of this result caching behavior by setting the "hasn't
- `wufuc` determines what service host process the Windows Update service (`wuauserv`) runs in, and injects itself into it.
- Once injected, it applies a hook to `LoadLibraryEx` that automatically patches `wuaueng.dll` when it is loaded.
- Any previously loaded `wuaueng.dll` is also patched.
- **No system files are modified!**
### Several improvements over my script-based approach:
- **No system files are modified!***
- Heuristic byte signature patching persists over new updates.
- C is best language.
- No external dependencies except for Microsoft Visual C++ 2015 Redistributable.
### How to install/uninstall?
Just run move the `wufuc` folder to wherever you want and run `install_wufuc.bat` as administrator.
To uninstall run `uninstall_wufuc.bat` as administrator.
To temporarily disable the patch, just go to the Task Scheduler and disable the `wufuc.{ ... }` task, then restart your computer.
### How do I remove your old patch and use this instead?
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`.