$ ctf42

#spectrogram CTF challenges

2 CTF challenges using spectrogram from 2 CTFs (2023–2026), 2 with writeups.

Forensics · 2

Often combined with

#audio-steganography 1 #sstv 1 #pcap 1 #network-forensics 1

Challenges

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Challenge CTF Weight Category Has
loud_packets
#network-forensics#pcap#spectrogram
 TJCTF 2026 – Forensics files wu 1
Sonic_Hide_and_Seek
#audio-steganography#spectrogram#sstv
 BackdoorCTF 2023 – Forensics files wu 1