# Third Eye

## Challenge:

This beat is making me see things that I didn't think I could see...

third_eye.mp3: https://drive.google.com/file/d/13Je41zqYscApr-f6GJ5kC8RjeRP6hjUi/view?usp=sharing

## Solution:

The audio file sounds normal. We can open it up in [Sonic Visualizer](https://www.sonicvisualiser.org/) to take a closer look.

At first glance, everything looks normal:

But if we add a spectrogram, we can see something that looks out of place:

With a little adjustment, we can see some hidden hex:


And that decodes to our flag: `DawgCTF{syn3sth3s1acs}`.

Original writeup (https://github.com/mcmahoniel/ctf_write-ups/blob/main/2021/dawgctf/audio_radio/third_eye/README.md).