Katy was a crypto 50 question in CSAW. We’re given a 64-bit standard ELF binary. Download from here.
Lets see what IDA has to say:
I participated in the recent Scripting Challenge hosted by Byld. Palash made a nice rev question, which could be solved using z3, so here it is. Let’s try opening up the binary in IDA.
Zwiebel was a pretty interesting reversing task in Tum CTF 2016. I spent around 6 hours solving it.
I found this onion in my kitchen, may I ask you to dissect it? https://www.youtube.com/watch?v=LowwCyZHBBk