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Questions tagged [crackme]

Little Puzzle Applications for Reverse Code Engineers, with the goal to break a protection scheme legally for exercise. These often have a lot of built-in security to prevent attackers from succeeding, at the end the reverse engineer often writes a so-called keygen (key generator) and a paper to show s/he succeeded and how.

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2answers
13k views

Crack Me Material

I'd like to get started with reverse engineering. Some years ago I've seen many many program, so called "crack mes" to crack. When I searched for some this week I've found none. My Question is, can ...
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4answers
4k views

Use OllyDbg to identify what happens when a button is pressed

I am entirely new to reverse engineering, but nonetheless I have been given the challenge by a friend to crack a computer program he wrote. Having never done this before, my research online suggested ...
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1answer
4k views

Fixing corrupt ELF header field “e_shnum” for use in GDB

If the ELF header which usually can be read using readelf has been manually manipulated, let's say by increasing the value for the "Size of section headers" the binary still can be executed and works ...