Intro Reversing 1
ELF x86_64 static analysis to recover a hardcoded password.

Intro to Web 1
Multi-part web challenge (HTML source inspection, JS timer bypass, header exfiltration).

Intro to Web 2
HTTP request tampering (headers, GET/POST switching, query-based auth toggles).

Intro Crypto 1
Nonce reuse in a stream cipher oracle to recover encrypted plaintext.

Intro Forensics 1
Session token extraction from PCAP and reuse for web authentication.

Flaig Checker
Model memorization leak in a fine-tuned LLM served via Ollama.