A hacker from doom9 forum, Arnezami has published a crack for extracting the processing key from a high definition player. This key will enable it to gain access to all Blu-Ray and HD-DVD’s. Previously another from the same forum, Muslix64 had broken both Blu-Ray and HD-DVD by extracting the volume keys for each disc. It is a cumbersome process. Muslix64 work is now used to break AACS discs which took years to develop and is broken within weeks. An extract from the hacker:-
“But then I realized why I first didn't find the Media Key: it was removed from memory after the Volume ID was retrieved and the VUK calculated. I also saw that in my "corrupt" memdump the VUK, Vol ID, Media Key and the Title Key MAC were all closely clustered in memory: in the first 50kb (of the entire multi megabyte file!) but there were large empty parts around it. Almost as if it was cleaned up.
This gave me an idea: what I wanted to do is "record" all changes in this part of memory during startup of the movie. Hopefully I would catch something insteresting. In the end I did something a little more effiecient: I used the hd dvd vuk extractor (thanks ape!) and adapted it to slow down the software player (while scanning its memory continously) and at the very moment the Media Key (which I now knew: my bottom-up approach really paid off here) was detected it halted the player. I then made a memdump with WinHex. I now had the feeling I had something.
And I did. Not suprisingly the very first C-value was a hit. I then checked if everyting was correct, asked for confirmation and here we are.”
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