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CTF author, malware analyst, compulsive self-hoster.
A multi-category CTF event I wrote and ran, with original challenges across reverse engineering, web exploitation, cryptography, binary exploitation, network forensics and misc.
I take things apart to understand how they work. Reverse engineering, web exploitation, cryptography, binary, network forensics. Over 74 solved and written up so far.
These days more of that time goes into tooling than into the challenges themselves. Scripts that shorten a solve, automation that handles what I used to do by hand, and keeping the server steady for the sites it hosts.