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
Polluting a Python module global through a recursive merge to flip the give_flag switch and unlock the flag
Beating an event-handler blocklist and a strict CSP with an onfocus payload and a top-level navigation leak
Bypassing a no-lowercase no-symbol bash jail with tilde-plus and question-mark globs to run the flag script
