Hidden Writings of the Wizard

hackerlab

Task: a chain of JPEG files hides the next step in metadata comments, then finishes with a steghide-protected image containing a Vigenère-obfuscated flag-like string. Solution: decode Base64 and ROT13 from EXIF comments, extract secret.txt from the final JPEG with an empty passphrase, and apply the key KNOWLEDGE to recover the final flag.