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 Forums >>  IDA Pro  >>  Looking for value in memory, breakpoint crashing

Topic created on: December 13, 2011 14:17 CST by mcz .

I want to set a read/write breakpoint on specific memory adress. I always know what value it contains but I can't find it using IDA. There is no problem when I look for it with Cheat Engine.

When I try to set hardware (read/write) breakpoint on adress found in CE application crashes with message like:
"Address: The insutrction at 0xAddress referenced memory at 0xSomeOtherAdress. The memory could not be written (...)"

I can't even jump (Jump to adress...) there. I get "Command "JumpAsk" failed" message.

What's wrong?

  NirIzr     January 11, 2012 07:01.39 CST
this is probably because some anti-debugging tricks catch you, and change the program's behavior in a way that doesn't terminates smoothly but triggers an invalid memory access later in code. (for example not allocating a structure and later attempting to access it without validation)

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