Reverse Engineering Virtual Machine coding

	Reverse Engineering Virtual Machine coding by Raul Dias on Mar 5, 2009 at 1:22:36 pm 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 Respond to this post   •   Return to posts index

	Re: Reverse Engineering Virtual Machine coding by Noah Kadner on Mar 5, 2009 at 3:57:35 pm Huh- how does that work? You actually have a DVD that only plays once in a single player. That sounds kinda impossible. Noah Check out My My FCP Blog and my new RED Blog. Unlock the secrets of the DVX100, HVX200 and Apple Color. Now featuring the Sony EX1 Guidebook, DVD Studio Pro and How to Light Interviews. http://www.callboxlive.com Respond to this post   •   Return to posts index

	Re: Reverse Engineering Virtual Machine coding by eric pautsch on Mar 5, 2009 at 4:07:14 pm Which title are you talking about? There's no player in world that supports this feature....unless Im missing something in what you're trying to describe? The DVD spec does not support it. Once you eject a disc, the player spec mandate to default all registers. You can check your VM code with several free tools - here's one I like for the pC http://download.videohelp.com/r0lZ/pgcedit/index.html Mac: http://dvdafteredit.com/ Respond to this post   •   Return to posts index

	Re: Reverse Engineering Virtual Machine coding by Michael Sacci on Mar 5, 2009 at 4:30:16 pm You guys beat me to it. How is this possible? Please share with the group. Respond to this post   •   Return to posts index

	Re: Reverse Engineering Virtual Machine coding by Raul Dias on Mar 5, 2009 at 11:49:53 pm The title is specific to marketing research and not a working title. I will try PgcEdit next week on it to see what I can findout, any other debugging tool suggestion is welcome. -rsd Respond to this post   •   Return to posts index

	Re: Reverse Engineering Virtual Machine coding by Noah Kadner on Mar 5, 2009 at 11:56:32 pm If that ever gets out of the lab and into the wild, we're all DEAD!!!! :) -Noah Check out My My FCP Blog and my new RED Blog. Unlock the secrets of the DVX100, HVX200 and Apple Color. Now featuring the Sony EX1 Guidebook, DVD Studio Pro and How to Light Interviews. http://www.callboxlive.com Respond to this post   •   Return to posts index