02 Jan 2019
In this challenge, we had to obtain remote code execution, simply by
exploiting a 1-day bug that forgot the difference between -0 and
+0. This has probably been one of the most difficult, fun, and
frustrating bugs I have ever exploited.
24 Oct 2018
Last weekend was HITCON CTF 2018, and it was really awesome! I
personally spent time on various super interesting challenges. Below
is just one of them that I happened to solve on the first day. I found
to be particularly interesting to solve since I never have had a
chance to dive into any homomorphic encryption systems before.
31 Dec 2016
This was a great challenge, and I learnt a lot, even though I ended up
spending many hours (over 10 hours!) on it.