Posts categorized under: ctf

usd hacking challenge 2016 writeup: token 5

The last token was hidden in a downloadable binary. It was announced on the challenge website as "reversing" and as "harder" than the other challenges. By many people's standards it probably was not really that hard, however, I never had any 1337 r3v3R1ng sk1llz to begin with, and my knowledge of assembly and using gdb is decidedly rusty, so finding this token certainly took me a while.

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