This writeup is incomplete and still work-in-progress. This year, I participated as NUS Greyhats in the DSTA’s BrainHack CDDC University Category and we came out first place once again ✌️ nus gr...

The Pwn challenges from CDDC this year were significantly more tedious than past years (every one of the four challenges is stripped and implements its own custom memory allocator), but ended up be...

9 months after my last hardware venture playing around with the Off-By-One Conference Badge, I once again find myself intrigued with yet another conference badge. Although I was initially hesitant...

Foreword The Flare-On Challenge is a single-player series of Reverse Engineering challenges, some of which are inspired from real-world problems faced by the mandiant team during their malware ...

On Windows, the operating system implements its own unique exception handling mechanisms — Structured Exception Handling (SEH) and Vectored Exception Handling (VEH) — which is an extension on top...

The Home Team Science and Technology Agency (HTX) invited me and my friends to compete alongside them in this year’s DEFCON Red Team Village. Although I didn’t get to fly to Las Vegas to experienc...

What are CTFs? 👾 CTFs are gamified cybersecurity competitions, where you solve different challenges for “flags”, or an answer of sorts! In true l33t hacker terms, this would be sort-of hacking an...

Welcome CTF is an annual CTF organized by NUS Greyhats. This beginner-friendly CTF is targetted at NUS Students who are keen in exploring the world of cybersecurity. This CTF consists of challenge...

I attended the first ever Vulnerability Research based cybersecurity conference in Singapore – Off By One organized by Star Labs, Eugene Lim and Sim Cher Boon – and had an amazing time! This confe...

I competed with NUS Greyhats in BrainHack CDDC 2024 Finals and we came out first ✌️ nus greyhats at cddc! Here are some brief writeups on some of the tasks I solved/attempted Pwn - SecretNote ...