geosn0w/reverse-engineering-tutorials

Some Reverse Engineering Tutorials for Beginners

Reverse-Engineering-Tutorials

Some Reverse Engineering Tutorials from a beginner for beginners interested in INFOSEC.

I group them by levels, I usually provide a compiled crack-me tool that you need to practice on and a tutorial. The source code for the crack-me is most of the times available in the level folder. I sometimes also provide precompiled macOS binaries.

Tools you might need during this:

• Radare2: http://radare.org
• Python: https://www.python.org/
• Hopper Disassembler: https://www.hopperapp.com/

Programming knowledge is not required for the lower levels, but might help a lot as you proceed.

~GeoSn0w (@FCE365)

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reverse-engineering-tutorials's Issues

crack-me cannot compile because "system" was not declared in the scope

I'm on linux and had to also include cstdlib to compile crack-me in the first tutorial

✗ g++ crack-me.cpp -o crack-me
crack-me.cpp: In function ‘void secret()’:
crack-me.cpp:17:23: error: ‘system’ was not declared in this scope
    system("uname -a\n");

Added and it compiles correctly with g++ 5.4.0

#include <cstdlib>

Maybe my g++ version is too old.

ld: symbol(s) not found for architecture i386 clang: error: linker command failed with exit code 1 (use -v to see invocation)

This command does not work

 $ g++ crack-me.cpp -o crack-me -m32

It gives me an error

ld: symbol(s) not found for architecture i386
clang: error: linker command failed with exit code 1 (use -v to see invocation)

What should I do?