Cheat Engine

Fresco

"Find out what addresses this instruction accesses" crashes the game ... sorry for the incorrect main title Embarassed

the code is not in the codelist; the instruction is being continuously executed and accesses multiple addresses.

when i click "stop" (stop tracing addresses)[changed addresses window] one random address starts drastically to increase "count" (how many times the address is being accessed) in the meanwhile game is stopped (can't do anything, just playing an replaying a little loop of the music ) then when i click close:

cheat engine give a message

Dark Byte · Posted: Sat Feb 18, 2012 3:55 pm Post subject:

Try the VEH debugger interface instead of the normal windows debugger. (change it in settings and before you attach the debugger)

Kavvman · Posted: Sat Feb 18, 2012 4:02 pm Post subject:

Which game is it that you are trying to hack ?

Fresco · Posted: Sat Feb 18, 2012 4:20 pm Post subject:

same proble with VEH Debugger

seems like kernelmode works

but i don't get what's the difference ...

Dark Byte · Posted: Sun Feb 19, 2012 12:28 pm Post subject:

The clicking stop bug is a know issue on instructions that get called too often.

The different debugger interfaces just handle events differently and the reason why it won't crash lies in the way the kernelmode debugger continues the process instead of the other two

Anyhow an explanation about the debugger interfaces:
When a program hits a breakpoint it triggers an interrupt (Kernelmode debugger hook here)
When the interrupt is not caught and handled windows will send the interrupt message to the exception handler of the thread that caused the interrupt to trigger (VEH Debug here)
And if that doesn't get handled properly windows will check if there is an windows api based debugger attached to the process. (Windows debugger here)

64-Bit users can not use Kernelmode debugging without having quite specific hardware

Fresco · Posted: Sun Feb 19, 2012 1:28 pm Post subject:

i have found this browsing:
http://win32assembly.online.fr/Exceptionhandling.html

but i never really understood how to use the exception handler.
...sorry i know that this is the second time i ask for an explanation example on how to manage an invalid pointer with an if condition...

[EDITED] ... and here's my explanation: http://forum.cheatengine.org/viewtopic.php?t=548162