CSAW 2013 – Reversing Impossible – 500 Points

WTF, his hp is over 9000! Beat the game to get your key.
http://csawctf.poly.edu/writeups/
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Bandit 20

OverTheWire Bandit 20

Level Goal

There is a setuid binary in the homedirectory that does the following: it makes a connection to localhost on the port you specify as a commandline argument. It then reads a line of text from the connection and compares it to the password in the previous level (bandit20). If the password is correct, it will transmit the password for the next level (bandit21). Continue reading