Question

the following piece of code works fine when i use it among some code

MOV ECX,DWORD PTR DS:[0x41154]  //Address

but when i try to set that address in my application as a varable and then do something like

MOV ECX,DWORD PTR DS:[PointerAddress]

the application crashes when the code is executed, PointerAddress is currently initialized as

DWORD    PointerAddress = 0x41154;

can anyone spot what’s wrong?

Answer 1

Here

[PointerAddress]

PointerAddress is treated as a pointer, not as a DWORD value.

It’s like

*(DWORD*)PointerAddress

and not like

PointerAddress

You perform a double dereference, thus the crash.

Try using

mov eax, PointerAddress
mov ecx, dword ptr ds:[eax]