Cheat Engine

[Eurochron89]

Hello.

I am currently trying to find a jump right in front of a call, within the game watch dogs.
For my own progress I want to learn to find the right spot via the debugger (or with other methods).
So far my knowledge includes scan for values, finding static pointers and/or use AOB scans and using them for my C# created trainer.
I now want to know how to find specific "functions" within the game, so I can trigger them or prevent them with my trainer.

Information about the game:
- the game does most of its work within the "Disrupt_b64.dll" - which is indeed 64bit
- i already know how to read out the game memory and use pointers with the base address of the DLL + Offsets.
- In watch dogs you can turn of the engine of the car by pressing the [F]-key.
- You can also toggle it back on again by pressing the [W]-key.

Here is what I want to do:
- I want to be able to find the jump/call which triggers this beahavior
- I also want to be able to manually turn off the engine, without pressing [F] ingame
- And I want to be able to prevent the engine from turning back on, when [W] is pressed
-> In other words, I want to change the jump condition and therefore prevent the engine to turn back on
-> And I want to be able to trigger the call, so the engine gets turned of when I want it.

Here is what I have so far:
- I used the scan to find a value which is changed when the engine is on/off
- Then I used "find out what writes to this address" and got one opcode.
- From this opcode I used the Breakpoint and Trace function to find all the calls and jumps
- I also narrowed it down to a specific call, but within this call there many more calls, going very very deep

I now have a basic idea where the engine gets started, but there are so many calls within the call i found,
that it would take very long to find that specific call and the jump in front of it.

The game seems to trigger a lot of things when the engine is turned back on.
The lights of the car; The sound of the car; etc.


Please help me and point out some methods I can use to find the right call.
I am sure Cheat Engine has some usefull functions that I don't even know of right now.

If you have a link to any tutorials for this topic, I would glady look into it aswell.

[justa_dude]

When the breakpoint on your opcode fires, you can use the stack trace in the debug window to determine which function called the one you're currently in.

[Eurochron89]