Monthly Archives: February 2017

Codegate 2017 Prequals – BabyPwn

This was a straightforward ROP challenge, which was made difficult on our side due to bandwidth issues. Interestingly enough, every time we tried to leak the stack cookie it started with a null byte. We have a read primitive (actually … Continue reading

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Codegate 2017 Prequals – EasyCrack 101

We are presented with a zip file containing a bunch of ELF executables which serve as crackmes as well as a web server to submit the flags to each crackme. Doing some reverse engineering, we discover that one instruction always … Continue reading

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