Reverse Engineering Virtual Machine coding

Hi,

As I posted before, I am looking in a way to store data in a DVD that can survive ejects. Or whatever gets closer.

Now I got a DVD with a poor's man DRM "read once" feature. That is, after you watch it it wont play again.

As expected, if you change the player, it will play again, and it wont work in a software player.

However, I am interest in the technique used to flag the dvd as read.

So is there any tool I can use to reverse engineer the VM code (not interest in ripping the video) or at least a good start. Something better that hexdump :)


Thanks,

Raul Dias