help me :D

[Hatish]

Hi how i can change register with ollydbg?
for example i want to change a register at this addres 0012412(is not real)
for example eax register... how i can? and how i can save the file with register at location change?

[2n0w]

Just doubleclick the register in the registers window to edit it.
To save this, you must use a mov instruction, I think.

[tnd0]

You cannot safe the register at a location. You can only modify the code where you want a register to have a certain value by replacing opcodes with <mov eax, yourvalue> (or any other suitable way like pop).

[MrSm!th]

Or you place a breakpoint and do it manually via OllyDbg

[Hatish]

Originally Posted by MrSm!th

Or you place a breakpoint and do it manually via OllyDbg

and how? i place breakpoint and how i can do it manually?

[tnd0]

I think what he wants is to 'save' the registerchange he made in OllyDbg to the executable. And that does not work unless you modify the opcodes or leave OllyDbg running every time you launch your application.

[MrSm!th]

Well, since he still asks how to do it manually, he might just want to edit it temporarily.

@Topic:

You can edit the value of a register by doubleclicking on the register you want to edit in the top right corner of ODbg.
If you want to make that change "permanent" so that it is always done automatically without you having to start Olly, then you have to patch at the address and place a "mov register_to_edit, value", as the others already mentioned.