In September 2025, I started my Fellowship at Opswat, which is my first job. There my task was to reproduce and give details analysis on CVE. At the time I was doing Flare-On and almost missed the ...

This year, I qualified for the Group A Final of the Cybersecurity Student Contest Vietnam(CSCV) 2025 as team HCMUT.i_dont_think_we_have_a_name. Here is my write-up for 2/3 jeopardy reverse engineer...

Flare On 12 This is my first year playing Flare On challenge after nearly one year of learning Reverse Engineering, and luckily despite company’s tasks and schoolwork, I’ve managed become one of ma...

PwnMe CTF 2025 Quals WU This is the write up for 4/5 Reverse Engineering challenge (Including the Insange challenge :3) Back to the past Challenge Description Using the provided binary and the e...

Easy Cuda Rev Challenge Description(English translated): Recently, inspired by DeepSeek’s direct use of PTX assembly to write optimized portions of cuda code, a simple cuda inverse question was des...

LACTF 2025 rev/javascryption Challenge description: You wake up alone in a dark cabin, held captive by a bushy-haired man demanding you submit a “flag” to leave. Can you escape? And here is the ...