This is an archive copy of the completed 2022 Dialed Up CTF.

#DialedUpCTF is now complete! Thanks for playing!

Summary

Dialed Up CTF is a music and phreaking themed mini-CTF that is completely self-contained in an .mp3 file. To just listen to the song check it out on soundcloud, or for the full video check here.

This mini-CTF is jeopardy style with 10 challenges. The challenges are puzzle based and generally involve music or phreaking related themes. No software or binary exploitation skills are required, but some challenges are significantly easier to solve with coding/scripting.

Key Formats and submitting results

Keys are in the format of {DialedUpCTF}<16 hex nibbles> (e.g. {DialedUpCTF}ab12cd34ef56gh78) and are case insensitive.
Almost all keys will have the {DialedUpCTF} prefix when found in game, but any that do not will be clearly marked in the challenge description.
Teams could share an account if desired.
Winners with correct answers were chosen by earliest submission time.

About the song

We tried to add a wide array of phreaking related sounds and samples including ~30 different ring tones, DTMF, a rotary phone, lots of modem noises and carrier recording samples. Hope you like it, we had fun with it :).

The official contest version of the song file can be found here. You can also listen to the song on soundcloud, but note that only the official .mp3 has the CTF contest data encoded in it. It’s benign and does not contain any exploits or malicious payloads — other than some extra embedded metadata, it’s a normal mp3 file and safe to open.

Greetz

Thanks to drifter for providing some of the infrastructure, play testing and general feedback!
Thanks to jxs, jpgleg, World Hacker League, archer and others for play testing!
Thanks to twpyhr from thisisarecording.com for letting us use some cool samples from the site for the song and various places in the CTF

File Hashes

SHA1 hashes:

Version 0.1 5e7245252fba802fe69888273f42171c0338a68a
Version 0.2 4df91f5a20d934f6215ae29fbfde5de03aaaf312
Version 0.3 d7e5a628326ebeaec0079803a351f5ab9eb963a3
Version 0.4 4243542a4a8de0d2b2287918d12a997481f84584
Version 0.5 527c44d3c9ed8d33276c777292f54530428778e3