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Lessons Learned From RITSEC CTF

2026-04-07  ctf
What worked and what didn’t in trying to host a humans-only CTF in the age of LLMs
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Lessons Learned From RITSEC CTF

Using BMP Polyglots to get RCE

2025-08-25  ctf  writeup  web
My solution to the 2025 HITCON CTF challenge “IMGC0NV”
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Using BMP Polyglots to get RCE

UMass CTF Writeups

2025-04-22  ctf  writeup  crypto  web  misc
Winning mental poker using properties of finite fields, deconstructing a zip bomb, and someone put a pyjail in my web
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UMass CTF Writeups

LA CTF 2025 Writeups

2025-02-10  ctf  writeup  rev  web
Reversing a Scratch clone of Celeste and exploiting a NextJS misconfiguration
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LA CTF 2025 Writeups

Srdnlen CTF 2025

2025-01-19  ctf  writeup  pyjail
Two pyjails, log4j, and a usb pcap
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Srdnlen CTF 2025

Simplifying MBA Expressions to Solve a CTF

2025-01-15  ctf  rev  writeup
My solution to the UofTCTF 2025 challenge Bloatware
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Simplifying MBA Expressions to Solve a CTF

Huntress CTF 2024 Writeups

2024-11-02  ctf  writeup  osint  rev
Writeups for my favorite challenges from the 2024 Huntress CTF
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Huntress CTF 2024 Writeups
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© 2025 Sylvie