New Encrypted FSB Format (Xbox360)? by placedo at 3:19 AM EDT on September 8, 2010
recently got a new game for the 360 & went to extract the audio files but before you can do any of that process, you have to decrypt them, i tried using guessfsb 0.3 on all of them but no success so not sure if they are using a different kind of scheme for the keys, but there still FSB4 files as the sfx in the game are not decrypted & the header was the same as any other multichannel FSB4 files so assume these are too.
I'd like to point out that guessfsb is just an automated way to do it, usually/previously fsb keys are worked out by hand, and guessfsb relies on a couple of assumptions that a clever inspection can work around. In any case, the megaupload link isn't working for me, so who knows.
feel free to delete any of the older posts from this thread as i'm taking them up, but try this one, it uploads the file to a load of servers, hopefully one of them won't be on the fritz :)
Ok, got it. At this point I can pretty much just confirm that I don't know what's going on. It'd be nice to have a hex editor with, say, Lua support, so I could just poke at this and see what patterns arise.
i'll have a look at the other file's associated with them & see if there the key is contained in any of them, doubt i'll have any luck as i'm no good at this sort of thing & thanks for looking into it, i couldn't see any patterns after looking at it at all, but as i said, i'm really bad at this sort of thing