plaidCTF 2014 - tiffany (re300)
tiffany Reversing (300 pts) ------------------- We want to get access to a server used by The Plague. Maybe if you can find out what key is accepted by this binary you can find out where or when The Plague is...
Yay, a Linux x86_64 executable! Let’s run it and see what happens, because what could possibly go wrong when running a random binary off the internet?
$ ./tiffany This may take a while... ....... Please enter a string: TEST .... Sorry, wrong.
Well, that took 3 seconds to initialize and 5 seconds per input string character. Sure seems to be doing a lot of stuff. Let’s load it into IDA to get a general idea.