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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
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8 Replies
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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.
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https://www.callboxlive.com -
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
https://download.videohelp.com/r0lZ/pgcedit/index.html
Mac:
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You guys beat me to it. How is this possible? Please share with the group.
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Most players sore disc ID and resume info, some for up to 30 discs. So there MAY be a way to access that info. Take a look at the VM code and please post your findings!
Max
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Blu-ray producer
New York
Area4.tv -
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
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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.
https://www.callboxlive.com -
DVD Reauthor
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Labuan blog reading a little, I can not be much the direction of the thread here I propose. On Reverse Engineering desifrando I've been coding and am working in a virtual coding which reduces the bandwidth used in the transmission of a file and therefore increases the speed of Transmission,(implications: No duplication or replication-speed Internet…) I hope someone is interested in the virtual coding can help me in this investigation that is consuming me a long time… My mail is ReMaker.Engineer @ gmail.com
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