Hiding information in an audio file

Martin W Luis

Apprentice
ULTIMATE
Local
Active Member
Joined
Jan 27, 2025
Messages
73
Reaction score
369
Deposit
140$
I'll tell you how to hide absolutely any information in a song by your favorite artist

Hello everyone, dear friends!

And yet, the best way to protect information is to make sure that the files don't even look encrypted. Steganography is also used for these purposes, that is, the transfer of information by masking the fact of its transfer.

Why is steganography better than a cryptocontainer?
Let's say that you have an ancient CD disk that contains an audio collection of songs from your youth and you decided to transfer an archive of important documents on it, access to which you would like to restrict. If you use a cryptocontainer as one of the files, then under persistent scrutiny it may catch your eye that the file is not played in the audio player - the chance of burning out when viewing manually is quite small, but if automated entropy assessment tools are used, then cryptocontainers are found in no time... And then, if the "enemies" have found the stash, cracking it is a matter of time.

It's a different matter if you have an audio disc on which all the tracks are listened to. The "enemy" will simply have no reason not to trust the files and there is a high probability that attention will be focused on something else.

How is this possible?
It's simple. Modern methods of data representation can be quite redundant, leaving unused data blocks inside the file. Or, in high-density files, you can try to “smear” the foreign file so that the quality of the original donor file suffers only slightly... And then, using automated tools, “pick out” these pieces and assemble our secret file in its original form.

I've seen this in the movies!
That's right, Elliot Aldersen from the Mr. Robot series recorded audio discs with all the dirt on those he hacked. He used the DeepSound program, which will be discussed further.

Action plan
Download the DeepSound 2.0 program.

Download (use existing) music in popular formats.

Open the audio file in the DeepSound program (by clicking the Open carrier files button):

1738085445850.png

You can also select the quality of the output file. The higher the quality, the less the output file will be damaged, but the smaller the amount of data that can be “smeared” inside. The output data format is FLAC / APE / WAV, so it is advisable to look for an input format of the same format (although mp3 will do).

Add our hidden files (Add secret files button):
1738085466907.png

At the same time, we see how the progress bar on the right side is filling up – it will not be possible to exceed the volume – either degrade the quality of the file, or split the data into other audio files.

Click the Encode secret files button


The files will be extracted to the output directory.

Done!

As you can see, there is nothing complicated about it. And yes, the “charged” audio file plays perfectly in the player and does not look suspicious at all.
 
Register
Top