Team Asia secured 2nd place at the ICC 2024 Chile regional team CTF! 1st: Team Europe 2nd: Team Asia 3rd: Team Oceania Congratulations for Team Asia, and Big thanks to @trabodalabs for their dedicated challenge creation! #acsc #icc #ic3games #ctf #TeamAsia #cybersecurity

I attended the SECCON finals with "ADA INDONESIA COY", really enjoyed the CTF day and was happy to meet some friends there!

Just finished writeup about reverse engineering Unity game and XDP program (eBPF). Interesting challenge from DeadSec CTF 2025, check my writeup below : blog.ryukk.dev/write-up/2025/… (previous tweet wrong URL lol, can't edit)

Last month, I created a writeup about how to reverse engineering binary compiled with QuickJS JS Engine. My approach was to modify the QuickJS codebase to force it to dump opcodes by providing bytecode from compiled binary. Check out the details at kos0ng.gitbook.io/ctfs/write-up/… #CTF

Tried out Harmony for the first time. It’s super handy for reverse engineering obfuscated C# binaries, especially when it comes to automation. I used to struggle automating steps in dnSpy, but Harmony made it seamless. Checkout my writeup on Securinets CTF kos0ng.gitbook.io/ctfs/write-up/…