On 12/24/05, [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote:
> I think you got it wrong a bit:
>
> - The XBOX cpu has no direct access to the DVD-ROM media.. it requires
> asking  the DVD-ROM Drive for any bit of information it wants..
>
> - Asking this information is done using SATA....
>

Yep, but after initial authentication operating system continues
further authentication, comparable a bit to PC protections like
Securom etc..
It uses rather large protection data blocks.
To emulate it we need something more than DVDrom firmware patching.
More simple way is and additional chipmodding..

> - The DVD-ROM Drive has it's own firmware... and it's own cpu
> - Theoretically, we could mimic every response the XBOX 360 Wants..
>
> This will result in running backup games.
>

Yes, that is the point.. I agree.

> Then we could create Authenticated "Modified" DVD-R's Also...
>
> That is... if some files, placed on a DVD-R Media are not Signed
> themselves..
>

XEX files are signed... and that is the next problem..

> This could lead to an exploit eventually, if time passes by.

Really hope so...


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