This is a posthumous writeup of the rao_bash challenge hosted by NorthSec 2017. It features a recompiled and backdoored bash with a broken ELF header. This was solved after the CTF, because a small hint was dropped to us afterwards.
May 23, 2017 | Reverse-engineering
April 19, 2017 | Binary-exploitation
This weekend we played in BCTF, though we took it a little easy in preparation for upcoming CTFs. However, we were able to solve a challenge with only one other solve, so we decided to write up our progress on it. It essentially boiled down to a sandbox escape.
February 27, 2017 | Binary-exploitation
This is a writeup for the pwn 200 binary exploitation challenge “hiddensc” we solved during Boston Key Party 2017.