Steam API Check Bypass

Bypasses Steam API dll integrity/size check by hooking CreateFile API.

Build

• Build with Visual Studio 2022.

Usage

• If you are using x32 version please remove x32 from dll name.

Method 1

• Use CFF Explorer and add SteamAPICheckBypass dll import to game main exe, then put the SteamAPICheckBypass(x32).dll dll beside game exe.

Method 2 (VersionShim) (x64 for pre-built version.dll)

• Put SteamAPICheckBypass.dll version.dll beside game exe.

Configuration (Optional)

• Create SteamAPICheckBypass.json and write file names you want to replace. Example:

{
    "steam_api64.dll":
    {
      "mode": "file_redirect",
      "to": "steam_api64.dll.bak",
      "hook_times_mode": "nth_time_only",
      "hook_time_n": 1
    },
    "game.exe":
    {
        "mode": "file_redirect",
        "to": "game.exe.bak"
    }
}
  

• mode: file_redirect or file_hide.
• to : The target file relative path.
• hook_times_mode: all, nth_time_only or not_nth_time_only.
• hook_time_n: The nth time to hook / not hook. (Start from 1)
• hook time option is useful for game dynamically loads steam_api dll after/before check.

Internal Process

• Please refer to nt_file_dupe Readme for more information.

Dependencies

• https://github.com/Xpl0itR/VersionShim
• https://github.com/otavepto/nt-fs-dupe

Bugs

If You Have Any Bugs, Please Submit a Issue On Github.
cs.rin.ru thread: https://cs.rin.ru/forum/viewtopic.php?f=10&t=136448

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