Steganography · Stage 1 live

Silent Ink

Hide encrypted ZIP files inside PNG images

Hide an encrypted ZIP archive inside a PNG image using a lean steganography pipeline, visually indistinguishable to casual inspection.

  • • Encrypt ZIP then embed bits into least significant bits of PNG pixels.
  • • Recover payload without visible artifacts on the carrier image.
  • • Educational CTF-style challenges with real money prizes.
Download v1.0 (Windows) Start Stage 1 — $300 Star on GitHub →

Stage 1 · $300 bounty

Extract the hidden encrypted ZIP from the provided PNG, derive the password, find the flag, and claim $300 USDT.

No brute force required. The key material is derivable if you understand the embedding and generation logic behind Silent Ink.

Go to challenge page →