Vibe Shell

bug-makers

Task: a netcat service that executes each input line as a fresh shell command and reveals only a boolean (Good Vibes/Bad Vibes) reflecting exit code 0 vs non-zero. Solution: turn the exit-status oracle into a byte-leak primitive via binary search and the printf '%d' ASCII trick, bypass a /sys flag decoy, enumerate the single real .txt file, and read it byte-by-byte.