Decoding a flag from the red channel of every frame in an mp4
Escaping a space-stripping shell with no PATH using brace expansion and absolute paths
Five git forensics challenges on one repo: hidden commit messages, odd authorship, mistagged releases, deleted blobs, and replace refs
Carving a PNG plus ZIP plus PDF polyglot to reassemble a three-part flag
Bypassing a no-lowercase no-symbol bash jail with tilde-plus and question-mark globs to run the flag script
Writeup for Map data from NDIAS Automotive/IoT CTF 2026. Streaming a million-tile 7z archive through a fixed-size PNG splitter and using a label-pixel anomaly check to find the one tile whose label starts with FLAG.
Writeup for Weird config updater from NDIAS Automotive/IoT CTF 2026. A ZIP parser-differential between the validation and extraction paths lets a debug config slip through a release-only check.
Writeup for Breathing Void from EHAX CTF 2026. A miscellanious forensics challenge involving isolating covert timing channels from huge pcap noise.
Writeup for #808080 from EHAX CTF 2026. A miscellanious challenge requiring generation of a 5-bit Gray Code sequence to decode a custom Caesar cipher.
Writeup for Chusembly from EHAX CTF 2026. A miscellanious challenge involving sandbox escape and arbitrary Python code execution via an unrestricted custom assembly interpreter.
Writeup for Keep Scripting from PascalCTF 2026. A Misc challenge involving KTANE simulation and networking.
Writeup for SurgoCompany from PascalCTF 2026. A Misc challenge involving Python RCE via email attachment and Roundcube automation.
Writeup for the HashCashSlash challenge from 0xL4ugh CTF V5. A Medium Misc challenge involving restricted shell escape and local privilege escalation via hidden socat service.
Writeup for the Invisible Ink challenge from 0xL4ugh CTF V5. An Easy Misc challenge involving stegonography using Unicode Tag Characters, Zlib decompression, and Ascii85 decoding.
