lit3r4lly/discordoverlayhookingresearch

A research about Discord overlay hooking library with implementation of written abuse module which made an "hook to hook" situation.

DiscordOverlayHookingResearch

This research is about Discord overlay hooking library within written abuse module which made an "hook to hook" situation because Discord's hook module uses the Minhook library, including Pattern scanning technique we can find the functions addresses (minhook calls).
After we get these addresses we can call these functions and hook the original functions. Bottom line, we getting code execution by the discord hook module which make us available to make cheats undetectable (couple of AC's already patched the Discord's overlay feature and have blocked this..).

Remarks

• Build only for x64 bit (debug or release mode)
• Inject only into processes that are x64 bit

Usage

1) Build the dll
2) Inject the dll to the target
Enjoy!

What is Pattern Scanning

Pattern Scanning is a technique which made for extracting addresses from modules contents.
We are implementing this technique by looking for the surrounding instructions code (bytes) and by that getting the functions addresses.

For pattern scanning we need two main elements:
Pattern - a pattern is a number of instructions that are represented by a byte sequence and includes a specific r/m64 instruction that contains the offset as mentioned above.
Mask - a mask defines which bytes of your pattern are wildcards and which are not, by using the characters '?' and 'x'.
The character 'x' means 'byte must match with the one from the module content' and the character '?' means 'the index of where we can find the offset in the module content respectively with the pattern'

For example:
Pattern - \xA1\x00\x00\x00\x00\x33\xD2\x6A\x00\x6A\x00\x33\xC9\x89\xB0
Mask - x????xxxxxxxxxx

Build

DiscordOverlyHooking can be built with Visual Studio 2019, by opening the .sln file and build the project (Ctrl+Shift+B) in a Release Mode or Debug Mode, whatever you want to (x64)

Issues

If you have any issues with this tool, you can ping me on Discord: Lit3r4lly#8336
If you have some critical bug, open an PR/Issue ticket