#osintindustries

7 writeups ·all writeups

• A Taste of Influence, Part 1 — The Flag in the Avatar

  2026-08-14/easysocmint/#image-analysis#reverse-image-search#osintindustries

  A ten-second solve of the OSINT challenge A Taste of Influence Part 1: the flag was in the Gronda profile picture, and the stylised logo pins the year.

• A Taste of Influence, Part 2 — Name to Registrant Record

  2026-08-14/mediumsocmint/#cross-platform-pivot#osintindustries

  Part 2 of the A Taste of Influence OSINT challenge: name to city to business project to a pre-GDPR WHOIS record, and why the phone number is the part that matters.

• A Taste of Influence, Part 4 — Finding the Strava Account

  2026-08-14/easysocmint/#cross-platform-pivot#image-analysis#osintindustries

  The final part of the A Taste of Influence OSINT challenge: finding a subject's Strava account through public athlete search, and disambiguating on the profile photo.

• READONLY — The Man Who Escaped Reality

  2026-08-11/mediumctf/#steganography#image-analysis#osintindustries

  A hand-drawn QR code carries two payloads: one is the vault, the other is the keys. The chain opens as a supermax jailbreak and closes somewhere much stranger.

• Holehe & The Secret Email — Dating a ProtonMail Account via Its PGP Key

  2026-08-06/mediumosint/#cross-platform-pivot#osintindustries

  ProtonMail never publishes account creation dates. It publishes a PGP key for every address, and that key carries a timestamp — one HKP query away.

• Nothing To See Here — PDF → Mastodon → SSTV → QR

  2026-08-06/hardosint/#steganography#image-analysis#cross-platform-pivot#osintindustries

  A passive-OSINT challenge that chains white-on-white PDF text, an emoji substitution cipher, a Morse-tagged Robot 36 SSTV transmission and a QR code into a physical meeting location.

• packet.bspak — Three Channels, Two Decoys, One Stereogram

  2026-08-05/hardosint/#steganography#image-analysis#geolocation#osintindustries

  Breaking a layered OSINT packet: binary-ASCII JSON, a QR code that isn't a QR code, and a Vocaroo spectrogram that hands you a Google Maps pin.