Redefine methods that classes have on Unity

Post by **DhaosCollider** » Sat Aug 10, 2024 5:20 pm

Intro:

I ran into a problem where for some reason some classes on Unity game could not be reverse referenced.
mono_findClass/mono_findMethod methods did not work and did not even allow code injection.
It took days of sleepless nights to identify all possible causes, fainally I succeeded in making code injection onto method abominable class.
This contribution is a by-product of that.
The cause appears to be when the data reference source is other than Assembly-CSharp.dll.
If no referent is specified, Cheat Engine may not be able to reverse reference the image.
It doesnt seem to matter whether its Mono-compiled or IL2CPP-compiled.

Download:

Notes:

mono_findClassByImage("imageName", "className")
Return class id using image name, class name. Assign "Assembly-CSharp" if the image name is "".

mono_findMethodByImage("imageName", "className", "methodName")
Return method id using image name, class name, method name.

mono_findMethodBySignature("imageName", "className", "methodName", "signature")
1st argument is the image name. Functionally identical to this.
mono_registerMethodSignatures(classId)
Registers the methods of given class with signature.
Symbol is classname_methodname_signature to distinguish it from existing mono symbols and to avoid problems with AA script syntax.
CombatEvent.ApplyMultipliers(damage: DamageMultiplier; flatMultiplier: single&):System.Void would look like:
Code: Select all
```
define(address, CombatEvent_ApplyMultipliers_DamageMultiplier_single&)
aobscanregion(SymbolName, CombatEvent_ApplyMultipliers_DamageMultiplier_single&, CombatEvent_ApplyMultipliers_DamageMultiplier_single&+100, AOBString)
```
Use either of the above codes, everyone doesn't suffer from method overloading.

mono_registerMethodSignaturesByImage("imageName")
Registers all methods of all classes the image has with signature symbol.
Operation is terribly slow, so not recommended for use.

mono_symbolsFullyLoaded
Wait until monoSymbolList is fully loaded. Requires Cheat Engine 7.4/later.

mono_FunctionsHighlight
Highlight global mono_functions on AA Editor and Lua Engine.

Links to references:

FearLess Cheat Engine