Dynamic code

[Holus]

Maybe a stupid question, but is there a way (in protected mode) to determine your the EIP?

I want to change some code based on the place I’m executing.
But this code is generated so it’s no option to make a label to determine it.

Is there an other way?

[XanClic]

Code: Select all

db 0xE8
dd 0x00000000
pop eax

This is a relative call with offset 0, so the EIP will effectively not be changed, however, it will be pushed onto the stack, so EAX will contain the address of the POP EAX instruction after executing it.

[Holus]

Code: Select all

db 0xE8
dd 0x00000000
pop eax

Pfff sometimes a little code can make a big deference.

I tested it and EAX = Where code "0xE8" is + 3.
Now i can start calculating!!

Thanks!!!