Hi! My name is Abdullah Hamdan. I’m passionate about cybersecurity and spend a lot of time participating in Capture The Flag (CTF) competitions. I mainly focus on binary exploitation and reverse engineering, but I may also start learning web security soon.

This page contains my write-ups for various CTF challenges I’ve tackled, as well as some blog posts. My nickname is a.b.h.a, taken from my name Abdullah and my surname Hamdan.