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

Hook WinAPI functions used by Valve Anti-Cheat. Log calls and intercept arguments & return values. DLL written in C.
https://github.com/danielkrupinski/vac-hooks

anticheat c csgo dll dll-injection hook-winapi-functions hooking injection reverse-engineering reversing steam steam-service vac vac-hooks valve valve-anti-cheat winapi

Last synced: about 21 hours ago
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Hook WinAPI functions used by Valve Anti-Cheat. Log calls and intercept arguments & return values. DLL written in C.

• Host: GitHub
• URL: https://github.com/danielkrupinski/vac-hooks
• Owner: danielkrupinski
• License: mit
• Created: 2019-07-25T19:18:42.000Z (over 5 years ago)
• Default Branch: master
• Last Pushed: 2020-06-12T13:58:51.000Z (over 4 years ago)
• Last Synced: 2024-11-20T14:51:14.191Z (2 months ago)
• Topics: anticheat, c, csgo, dll, dll-injection, hook-winapi-functions, hooking, injection, reverse-engineering, reversing, steam, steam-service, vac, vac-hooks, valve, valve-anti-cheat, winapi
• Language: C
• Homepage:
• Size: 262 KB
• Stars: 164
• Watchers: 13
• Forks: 44
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • Funding: .github/FUNDING.yml
  • License: LICENSE

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README

        
# vac-hooks

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

## Getting started

### Prerequisites

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](https://visualstudio.microsoft.com/) (Windows SDK is installed during Visual Studio Setup).

### Cloning

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](https://git-scm.com). 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.

### Compiling from source

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.

### Loading

Open **Steam** as Administrator, then open your favorite [DLL injector](https://en.wikipedia.org/wiki/DLL_injection) (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.

## See also

- [VAC](https://github.com/danielkrupinski/vac) - source code of Valve Anti-Cheat obtained from disassembly of compiled modules