Steganography for the lazy

Alright, I saw this on shell-fu today and thought it’s probably the easiest way to hide things.

Say, you want to hide a rar archive inside a png image:

cat picture.png archive.rar > hidden_archive_in_pic.png

This also works with music files.

cat song.mp3 archive.rar > hidden_archive_in song.mp3

However, what I’ve noticed is that your application might try to play the junk at the end (with terrible squeaky noise) or just crash (errrm, most windows apps?), so be careful if you are playing those songs at parties.