I have no idea how you would solve this with a forensics tool, I did it all manually and as far as I can tell it was all identical to a certain cipher that is crypto 101… I guess I took the hard route, although once I realized the initial “cipher” it took me about 3 minutes max.
I’ve done that strange challenge. Any byte was taken… Its more crypto than forensics. After small hint i do this manually in simple python oneliner.
If you wanna help - just PM me
Solved it by treating each bit as a coin. But can’t see where the ‘single byte’ clue comes in handy. I added nothing to the original file. All the required data is in the original.
I actually don’t get it why people have the interest to solve such a challenge using a magic tool; as soon as one gets a clue and then trying to script or program the solution it is quite simple… the hint with the coin is quite good.
Thank you guys for the subtle hints! With the right tool this was quite quick to resolve.
But doing it with custom code/script should not be that hard too…
If you are stuck, go through the comments again. There are only 2 pages and there is more than you need to get this done.