$ ctf42

#image-reconstruction CTF challenges

4 CTF challenges using image-reconstruction from 3 CTFs (2023–2026), 4 with writeups. Mostly Forensics (50%) and Misc (25%).

Forensics · 2 Misc · 1 Reverse · 1

Often combined with

#verilog 1 #png-ihdr-repair 1 #pdf 1 #base32 1 #vram-dump 1 #fp16 1 #file-format-reversing 1 #sonar 1

Challenges

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Challenge CTF Weight Category Has
Ghost_in_the_GPU Z0d1ak 2026 Quals 25.00 Forensics files wu 1
not_just_a_hobby LA 2026 – Misc files wu 1
brokenimg TCP1P 2023 97.33 Forensics files wu 1
Black_Tide_Survey Z0d1ak 2026 Quals 25.00 Reverse files wu 1