33 writeups across 7 pages
Navigating a height-128 2-isogeny volcano by lifting both endpoints to its unique CM crater
Extracting embedded bit-vector puzzles from a Next.js bundle, solving them with Z3, and rebuilding the flag keystream
Carving an embedded compiled AppleScript and inverting its bytecode-level character transform to recover the hidden payload
Recovering a 150-character AES-CBC secret through UTF-8 and JSON response oracles under a strict decoding barrier
Recovering xorshift128 state from encoded audio tones and removing the PRNG mask to reconstruct the flag