Holiday Hack Challenge 2023 Report Cody Travis <cwtravis@gmail.com>
Top

Space Island Door Access Speaker

Difficulty:

Description:

There's a door that needs opening on Space Island! Talk to Jewel Loggins there for more information.


Solution

Solution:

The Space Island Door is a locked and requires a WAV audio file upload that will be played to a microphone. The recorded file must be a certain passphrase (supposedly) spoken by a particular person.

Space Island Door Access Speaker

The passphrase was found in a secret directory on a network fileshare. Since I know the passphrase, I can test the person specificness of the door by recording me saying the passphrase and seeing how to door reacts.

My Attempt At Passphrase

Even with the correct passphrase, my voice would not open the door. I know we can do AI voice synthesis using available (even free) services online. We just need a clear sample of the target's voice.


Speech Synthesis

Speech Synthesis:

Turns out if you speak to Wombley Cube in Chiaroscuro City on Film Noir Island, he will give you a recording of his audio book.

Wombley Cube's Audio Book

You can download the audio book recording here:
wombleycube_the_enchanted_voyage.mp3

I took this recording and followed a guide on Youtube regarding AI voice synthesis. I used a platform called "Eleven Labs" which was either free or very cheap, and was able to create a cloned voice of Wombley Cube. I then ran the passphrase through the "Text to Speech" form at the ElevenLabs site.

Text to Speech

The Text to Speech form output an mp3 file of the recording.


Wombley's Passphrase

I used Audacity to convert this file to WAV format for the Space Island Door Access Speaker form.

You can download my synthesized passphrase here:
wombley_passphrase.wav

I used this file on the Space Island Door Access Speaker and it worked! It opened!

Door Opened

Passphrase Success