THJCC 2026 CTF Writeup
Amir Aliu|25/02/26|1 min read
CTF Event Info
| CTF Organizer | CTF Team | CTFTime URL | CTF Platform |
|---|---|---|---|
| Taiwan High School Joint Cyber Championship | KSAL Cyber Team | ctftime.org/event/3088 | ctf2026.thjcc.org |
This was my first CTF, and of course I had guests over at the same time, so I didn't get to do much. I mostly stuck to forensics and steganography since they're easier to work on. Not really, but still.
I ended up solving these two:
- CoLoR iS cOdE
- SSTV Audio Challenge
Challenges
Showing 2 of 2
25/02/26 | 2 mins read
CoLoR iS cOdE
Breaking ZipCrypto with known plaintext, then combining metadata and pixel-frequency encodings.
ForensicsSteganographyZipCrypto
25/02/26 | 1 min read
SSTV Audio Challenge
Identifying SSTV audio patterns in a spectrogram and forcing the right decoder mode.
ForensicsSteganographyAudio