Tuesday, September 24, 2013

CSAW 2013 Reversing 100

Reversing 100 CSAW 2013

Credit to Ryan

This challenge was fairly simple you are given a .NET executable that prompts you for a password:

To see the password check function we used .NET reflector to view the source code. The source code is as follows:

All we needed to do to get the program to print the key is to find the result of num2 ^  num3 which is 13371337255. From here we put in 13371337255 and had the program print the key.

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