Binary Digits — Binary-Encoded JPEG Image
Binary string (71,192 bits) decoded to a JPEG image containing the flag in visible text — picoCTF Forensics writeup by A...
Forensics
4 writeups covering binary-encoded image recovery, JPEG steganography extraction, multi-stage Base64 encoding chains hidden in log files, and PDF metadata analysis. All challenges from picoCTF picoGym.
Hidden in Image — Steganography with Steghide
Steghide password recovered from a Base64-encoded JPEG comment field — hidden data extracted from JPEG using steghide. p...
Logs Analysis — Base64 PNG in a Log File
Base64-encoded PNG image extracted from a log file, OCR'd to recover a hex string which decoded to the flag. Multi-stage...
PDF Metadata — Flag in Author Field
Flag decoded from a Base64-encoded value in the PDF Author metadata field using pdfinfo. picoCTF Forensics writeup by Aj...