Topic: Xbox 360 Game Disc Authentication (Read 197 times)

xbfan703 · « **on:** March 25, 2006, 09:33:00 AM »

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Xbox 360 Game Disc Authentication
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In order for an xbox 360 game disc to be detected by the xbox 360 as a 'dvdxbox360' disc

it must pass a challenge/ response session between the game disk and the dvd rom drives

firmware.

(1) The xbox 360 (kernal) retrieves the first 0x661 bytes of the security sector (SS) from

the game disk using the ReadDVDStructure Command.

(2) This is then decrypted and the xbox 360 has a set of Challenges and Responses (CRs).

(3) The xbox 360 Challenges are issued to the dvd rom drive in the form of a Challenge ID

(CID) and 4 bytes of Challenge Data (CD).

(4) The xbox 360 sends a Challenge ID (CID) + challenge to the dvd rom drive then the dvd

rom drive firmware looks up the challenge and the response from the table by using the

Challenge ID (CID).

(5) The dvd rom drive responds to the xbox 360 and the drives Response is compared with the

decrypted table.

(5) There are 6 Challange/Response (CR)s exchanged during authentication of a game disc out

of a total of 9.

(6) If all checks pass the drive unlocks and the game boots. The xbox 360 swaps to the

game partition after the authentication has succeeded.

xbfan703 · « **Reply #1 on:** March 25, 2006, 08:05:00 PM »

No Comments? Does no one see the significance of this information towrds hacking the Hitachi xbox 360 dvd drives firmware ?

tWiZtEr_RX · « **Reply #2 on:** March 25, 2006, 07:47:00 PM »

I sure do, but the lack of an XBOX360 and the required technical skills are keeping me from making any progress with the fine information you have provided

MacDennis · « **Reply #3 on:** March 29, 2006, 04:35:00 AM »

QUOTE(xbfan703 @ Mar 26 2006, 04:36 AM)

No Comments? Does no one see the significance of this information towrds hacking the Hitachi xbox 360 dvd drives firmware ?

That's just a summary of some information posted on xboxhacker.net: thread
Nothing new ..

flashfreak · « **Reply #4 on:** March 29, 2006, 05:37:00 AM »

Yeah I'd read that one b4 too

jizmo · « **Reply #5 on:** March 29, 2006, 05:13:00 AM »

QUOTE(xbfan703 @ Mar 26 2006, 05:36 AM)

No Comments? Does no one see the significance of this information towrds hacking the Hitachi xbox 360 dvd drives firmware ?

Copy/paste here some random old info about x360 signature and check back tomorrow if anyone has been able to tackle the key for you.

xbfan703 · « **Reply #6 on:** March 29, 2006, 05:20:00 PM »

Amazing how bad attitudes on here are at times. I tried to gather together info from the xbox hacker forums and organize it into an understandable fassion in hopes of stimulating a team work enviroment and just get shot down for trying... it is clear they will never call this team xbox scene. The hackers accomplished what they did through working as a team, sharing info and insights but that will never happen here, every attempt by myself and others here has turned into a arguing match which contained insulting remarks. Relax I am convinced do not try to bring cooperation or stimulate working together or sharing of info here beacuse it will not work here. The vast majority of the time I have ever posted on xbxo scene forums was in the Newbie Forums trying to help others solve problems with their xboxs. If I had seen interest it was my intention to continue posting other topics comprised of info from xbox kacker but that would be useless.

Joshua Wood · « **Reply #7 on:** March 30, 2006, 06:45:00 PM »

You have good intentions, but as I said in your other post, the hack has been done. And regardless of what anyone thinks or likes about it, it will eventually be released, for good or for bad. Xecuter seemed to make it pretty clear that they're working hard on doing something about this. And if they don't, there are many massive pirate rings that will. It's too much money loss for them not to. Let's hope it doesn't kill the 360.

mrpowerbook345 · « **Reply #8 on:** March 30, 2006, 07:01:00 PM »

do you guys think it'd be safe to advertise the xbox360 mod on public websites like craigslist, or should i mod xboxs like i'm dealing drugs and be very cautious about law enforcement?

PedrosPad · « **Reply #9 on:** March 31, 2006, 02:41:00 AM »

QUOTE(mrpowerbook345 @ Mar 31 2006, 02:32 AM)

do you guys think it'd be safe to advertise the xbox360 mod on public websites like craigslist, or should i mod xboxs like i'm dealing drugs and be very cautious about law enforcement?

Depends on the distribution format and the law in your country of residence I suspect.

If a PC utility, dumps the DVD drives flash, verifies it via a checksum, patches it, and re-flashes, the distribution wouldn't contain any copyright code.

If youre providing a modification service, the areas is even greyer. XBOX1 mod-shops can claim to be a repair or update services, as typically they only flash with Cromwell (i.e. they repair your console to be able to run Linux) which doesnt allow piracy (off the bat).

The current X360 hack doesn't have any legitimate purpose yet!

This post has been edited by PedrosPad: Mar 31 2006, 10:47 AM

mrpowerbook345 · « **Reply #10 on:** March 31, 2006, 05:07:00 PM »

damn that sucks! well i'm definetly not doing it now..

;-)

Wolves · « **Reply #11 on:** April 18, 2006, 11:07:00 PM »

This thread brings me to think, at some point, the sacred key MS uses to sign their dvd's is transferred between the DVD drive and the 360. Is there anyway to capture it?

This post has been edited by Wolves: Apr 19 2006, 06:07 AM

MacDennis · « **Reply #12 on:** April 19, 2006, 02:01:00 AM »

QUOTE(Wolves @ Apr 19 2006, 06:38 AM)

This thread brings me to think, at some point, the sacred key MS uses to sign their dvd's is transferred between the DVD drive and the 360.

Incorrect.

QUOTE(Wolves @ Apr 19 2006, 06:38 AM)

Is there anyway to capture it?

No. The dvd's arent signed, the executables are.

n8thegr8 · « **Reply #13 on:** April 19, 2006, 03:56:00 PM »

QUOTE(PedrosPad @ Mar 31 2006, 10:12 AM)

The current X360 hack doesn't have any legitimate purpose yet!

Except for the fact that it would allow one to modify unsigned files on the disk to take advantage of an exploit, opening the doors for a soft mod to allow homebrew, but I guess that isn't significant enough to mention...

stowelly · « **Reply #14 on:** April 19, 2006, 04:05:00 PM »

QUOTE(n8thegr8 @ Apr 19 2006, 11:03 PM)

Except for the fact that it would allow one to modify unsigned files on the disk to take advantage of an exploit, opening the doors for a soft mod to allow homebrew, but I guess that isn't significant enough to mention...

being able to modify oblivion would be quite nice too

Author Topic: Xbox 360 Game Disc Authentication (Read 197 times)