Topic: Change Dvd Drive Firmware To Return False Mediacheck? (Read 172 times)

iquid-!ce · « **on:** January 04, 2006, 10:56:00 AM »

its been mentioned, theres already 4 or 5 threads about a supposed modchip avaidable in 2 weeks that does just that... but most think its bogus

jameswalter · « **Reply #1 on:** January 04, 2006, 11:43:00 AM »

QUOTE(umdkappy @ Jan 4 2006, 09:36 AM)

I don't think anyones mentioned it here yet, but is the DVD Drive's firmware or bios encrpted or accessable at all? The DVD drive is checking the media type and returning whether it is an original disc or not - can it be modifyed to always return a 'disc is authentic' value? Granted this doesn't help out with being able to run unsigned code, but it would allow for backups and perhaps grant more access to the system since the disc its reading it thinks is real.

Even if the drive's firmware is encrpted, it'll probably be easier to hack then the 360 itself, IE: modchip for the drive....

Try checking the 25+ page thread over at xbox-hacker.net. They have been going into detail on firmware specifics and breaking down the code.

fandabidozi · « **Reply #2 on:** January 04, 2006, 11:48:00 AM »

I dont think that will work at all unless M$ has the worst copy protection ever and i dont think they have..

jameswalter · « **Reply #3 on:** January 04, 2006, 11:57:00 AM »

QUOTE(fandabidozi @ Jan 4 2006, 10:55 AM)

I dont think that will work at all unless M$ has the worst copy protection ever and i dont think they have..

Why not....Right now it seems that the media check is the only thing preventing backups from running. Some sort of hardware/software(firmware) hack may be quite possible.

Edit: Idea I metioned about this same type of thing

82ross · « **Reply #4 on:** January 04, 2006, 04:31:00 PM »

No "sig key" has ever been leaked for the Xbox why would we be so lucky this time round

jameswalter · « **Reply #5 on:** January 04, 2006, 08:18:00 PM »

QUOTE(-NEUTRINO- @ Jan 4 2006, 02:27 PM)

just a matter of time... I figure a disgruntle M$ employee will export the sig key within a few months or so...
-NEUTRINO-

Yeah...I'm sure MS is careless with the 2048 bit key used for signing...they probably even through it away...maybe we can go dumpster diving at MS to get it.

Angerwound · « **Reply #6 on:** January 04, 2006, 09:25:00 PM »

QUOTE(82ross @ Jan 4 2006, 04:38 PM)

No "sig key" has ever been leaked for the Xbox why would we be so lucky this time round

There are more then one signing key for the xbox console.
The private/public key combos were used for the encryption of executables.

There is also an XBOX Cert Key, which is used for gamesave signing (Hash CertKey and .XBE SigKey to produce the Auth Key used to resign gamesaves) and producing the contentmeta.xbx SHA1 hash(hash done on HDD Key when installing content). They however didn't use this type of META file for xbox 360. Everything is done with PIRS files.

The XBOX Cert Key, was never officially leaked in it's retail form. A debug form of it can be found within the leaked kernel source code but thats of no use to retail console users. Retail Cert Key must be sniffed out of the kernel itself.

jameswalter · « **Reply #7 on:** January 04, 2006, 10:12:00 PM »

QUOTE(Angerwound @ Jan 4 2006, 08:32 PM)

The private/public key combos were used for the encryption of executables.

Not encryption....signing. Digital signature is created with the private key.

Angerwound · « **Reply #8 on:** January 05, 2006, 03:49:00 AM »

QUOTE(jameswalter @ Jan 4 2006, 10:19 PM)

Not encryption....signing. Digital signature is created with the private key.

Forgive my wording. The point was they are "signed" with that key combo

massareal · « **Reply #9 on:** January 05, 2006, 04:45:00 AM »

Sounds maybe wierd, but calculating the key cost loads of time and CPU.
Why not try it with: http://boinc.berkeley.edu/

This must run on a Linux server....best would probable be in Australia.....because the law there is more easy than europe or the states.

armless · « **Reply #10 on:** January 06, 2006, 11:53:00 PM »

QUOTE(wmadoss @ Jan 5 2006, 12:55 PM)

Sure if we have a few billion years we might find the key...

true dat
double true

jameswalter · « **Reply #11 on:** January 07, 2006, 11:30:00 AM »

QUOTE(massareal @ Jan 5 2006, 03:52 AM)

Sounds maybe wierd, but calculating the key cost loads of time and CPU.
Why not try it with: http://boinc.berkeley.edu/

This must run on a Linux server....best would probable be in Australia.....because the law there is more easy than europe or the states.

People need to learn exactly how long brute forcing actually takes.

myst1x · « **Reply #12 on:** January 07, 2006, 02:57:00 PM »

QUOTE(jameswalter @ Jan 7 2006, 01:37 PM)

People need to learn exactly how long brute forcing actually takes.

And also learn just how big a 2048 really is...

Author Topic: Change Dvd Drive Firmware To Return False Mediacheck? (Read 172 times)