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HellBound Hackers | Challenges | Patching

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App patching 1


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Posted on 26-08-08 19:18
Hi, I found the pass which was really obvious and I just have a question:
I have found (I think) which jmp I need to NOP but do I have to NOP it first and then run the app and insert the password or do i have to run it --> insert password and then NOP the jump. No matter what I have tried, nothing works. Also, how would I get the checksum with olly? Is it possible or do I have to save the changes to the file and then check it?

Thanks in advance for any help.


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RE: App patching 1


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Posted on 26-08-08 20:00
It doesn't matter when you NOP the jump. You need to save the changes to the file, either with Olly or a hex editor and then use md5sum or something to get the checksum.