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Underground - Application Patching

July 30th, 2008 by Patchy
Crash Overron’s second Underground video explains how to use Ollydbg to manipulate a simple program. OllyDbg is a debugger that analyzes binary code. Not only does Olly allow you to step through an executable’s assembly code, but also, it can trace registers, recognize procedures, API calls, switches, tables, constants and strings. Crash Overron utilizes a feature in Olly to locate a referenced text string that is displayed when an invalid serial key is entered. Once the string is located, he can find the compare statement that checks the user’s serial key, and change the flow of the program so that his serial key is accepted. Full Scale Video Here
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If you would like to submit a video to Infinity Exists Underground send a email describing your video to underground@infinityexists.com

Posted in Underground |

3 Responses

  1. excid3 Says:

    i liked this, maybe show how to create a simple keygen sometime. take a crackme and show explain a bit on ASM and how they get the sweet music and everything into a tiny like 13kb file ;)

  2. kinetik Says:

    Hey guys I liked this a lot. One question though I can’t seem to reproduce the same results running ms3 in windows. Any idea’s?

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