$ ctf42

#metadata CTF challenges

6 CTF challenges using metadata from 6 CTFs (2020–2026), 5 with writeups. Mostly Forensics (50%) and OSINT (33%).

Forensics · 3 OSINT · 2 Misc · 1

Often combined with

#exif 3 #spectrogram 1 #audio-steganography 1 #osint 1 #qr-code 1 #pdf-forensics 1 #dicom 1

Challenges

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Challenge CTF Weight Category Has
2_-1_Senses CSS 2026 – OSINT files wu 1
Last_chance KubSTU 2026 24.83 Forensics files wu 1
Melankonimir FortID 2026 45.00 OSINT files wu 1
Hidden_Data WolvCTF 2024 35.25 Forensics files wu 1
The_DCM_Meta Wargames.MY 2024 – Misc files wu 1
Meta Mountains HSCTF 2020 – Forensics files src