On Mon, 9 Jan 2012 17:17:42 -0200 Rafael de Oliveira Costa <[email protected]> wrote:
> I think that your another approach about using .data segment is > similar to "Phrack 66: manual binary mangling with radare" mentioned > before. but I really need to add an instruction in some specific > places in a .text segment. In this case how about writing a wrapper application that debugs the target, places breakpoints at the desired offsets, does it's magic and then resumes execution? That would save you the trouble of fixing all non-relative offsets. The downsides are a performance loss and potential anti-debug tricks you'd need to fool... Another approach would be DLL injection on Windows or LD_PRELOAD on *nix if the target is part of a loaded library. I hope this helps, since I ran out of ideas.
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