The Emprisa Maldoc Challenge
How I turned a real-world malicious document exploit into the Emprisa Maldoc CTF on CyberDefenders — 14 questions targeting intermediate maldoc analysts.
Hunt the Kingdom CTF Challenge
How I won the GuideM Hunt the Kingdom blue team CTF — strategy, preparation, and the high-stakes final minutes that came down to four unsolved questions.
CovidScammers writeup (Defcon RTV CTF)
Defcon RTV CTF writeup — reversing a Linux malware binary, bypassing ptrace anti-debugging, and recovering flags from shared memory and rootkit files.