steam game overlay (GameOverlayUI.exe) hook example⚡

vgui2.dll hook example

use any usermode injector to inject into gameoverlayui. then using memory share to render your items.

screenshot

NOTE

1. hook VGUI_Surface039->PaintTraverse to render on screen.

2. source is building on Visual Studio 2017 Release x86. not sure about other platform.

3. alloc a free memory to create a shared memory field for communication.

4. the original steam overlay are not support DrawLine or DrawOutlinedCircle and some functions, so in this source DrawLine and DrawCircle is based on DrawFilledRect.(Bresenham algorithm)

5. do not using too much draw-functions in one loop maybe cause GameOverlayUI.exe crash.

inject a specific game

1. on usermode inject GameOverlayUIHook.dll from directory \Release to GameOverlayUI.exe.

todo

1. is this can bypass BE/EAC anti-cheat system? the answer is: idk.

2. this is an example. there are lots of ways to achieve hook PaintTraverse. using veh or other virtual table.