Hook WinAPI functions used by Valve Anti-Cheat. Log calls and intercept arguments & return values. DLL written in C.

Microsoft Visual Studio 2019 (preferably latest version i.e. 16.1.6), platform toolset v142 and Windows SDK 10.0 are required in order to compile vac-hooks. If you don't have ones, you can download VS here (Windows SDK is installed during Visual Studio Setup).

The very first step in order to compile vac-hooks is to clone this repo from GitHub to your local computer. Git is required to step futher, if not installed download it here. Open git bash / git cmd / cmd and enter following command:

git clone https://github.com/danielkrupinski/vac-hooks.git

vac-hooks folder should have been succesfully created, containing all the source files.

When you have equiped a copy of source code, next step is opening vac-hooks.sln in Microsoft Visual Studio 2019.

Then change build configuration to Release | x86 and simply press Build solution.

If everything went right you should receive vac-hooks.dll binary file.

Open Steam as Administrator, then open your favorite DLL injector (as an admin too) and inject vac-hooks.dll into Steam.exe process.

After injection you should see vac-hooks.txt log file in Steam installation directory (e.g. C:\Program Files (x86)\Steam). The log file contains names of WinAPI functions being called by VAC, their parameters and return values.

• VAC - source code of Valve Anti-Cheat obtained from disassembly of compiled modules