Cheat Engine

[mousesex1]

Hi db,
I use my own cheatengine modified from ce5.2 ,and it works well .

But now I use it in some game, the kernelmode debugger was useless.

When I set Global Debug routines,it works . But if we don't set Global Debug routines, "GeneralHandler function" of int1 don't launched.

Is there anyway to solve it ?
or how to find out the cause of int1 GeneralHandler function failure?
or what cause cpu registers interrupt 1 not fire on ?

if CE's interrupt1 GeneralHandler function blocked by other progam ?

thanks.

[Dark Byte]

Are you sure you mean 5.2 and not 6.2?

If it only works with global debug then that means that setting of the debug registers in the target threads is being blocked. Either a hook on the usermode or kernelmode side of setthreadcontext is preventing the debugregisters from being set (Global debug does tasksurfing and thus is capable of setting the debug registers using the hardware instead of windows api's)

Also, if global debug works then what is the issue? (This function is there specifically for these cases)

if 6.2 and gd isn't used, an alternate reason could be that ce can't find a proper debug register to use. In that case either go to settings->debugger options, and tick "Override existing breakpoints", or go to the threadlist and clear the debug registers of individual threads

[mousesex1]

hi Db,

I'm sure I used CE5.2 .

Ce5.2 setthreadcontext in usermode. How to setthreadcontext in kernelmode ?

Is there anyway to set thread context in kernelmode without windows api's ?


Thanks.

[Dark Byte]

Without windows api you suspend the process and then manually adjust the kernelmode stackframes of the threads
Or use global debug and tasksurf till the cpu hits all the threads and during that time sets the debug registers

With windows api not sure. The system may need in a specific state to use the undocumented psSetThreadContext