If you are interested in experimenting with steganography and my tools, I propose the following challenge.
This GitHub project is for a steganography tool. It has a PNG image of a stegosaurus with an encoded message.
The challenge is to use my tools to decode the message.
The steganographic algortihm is a bit different than the one I described in diary entry “Steganography Analysis With pngdump.py: Bitstreams”.
If you are stuck and need a hint (ROT13): zngevk genafcbfvgvba
Next Saturday, I will post my solution.
Didier Stevens
Senior handler
blog.DidierStevens.com