Hack The Box · Steganography

Milkshake

Using a spectrum view to expose a message hidden inside an audio file.

Challenge details

Name	Milkshake
Hint	Can you bring all the boys to the yard?
Difficulty	Easy · Retired [0]
Rated difficulty
First blood	Cowonaboat
Creator	Arrexel

Inspect the audio

The challenge provides an audio file containing a hidden message. Open the file in Sonic Visualiser and add a spectrum layer to inspect the frequencies visually.

Milkshake audio file opened in Sonic Visualiser — The supplied audio loaded into Sonic Visualiser.

Spectrum layer being added to the audio visualization — Adding a spectrum view exposes structure that is not obvious from the waveform.

Hidden message revealed in the audio spectrum — The hidden message appears directly in the spectrum.

I previously called Hackerman the easiest challenge. This one takes that title.