Difference between revisions of "Xbox Game Disc"

Revision as of 14:15, 4 June 2017

Xbox games are shipped on DVDs. They are commonly referred to as Xbox Game Discs (XGD).

Visible information on ring

The DVD inner ring usually contains:

(The examples are from a German FIFA Soccer 2003 disc)

An outer portion with labels:

• Outer ring Layer 1
  • Code 39 Barcode of the the Mastering Code (*EA02302E L1*)
  • Text for Mastering code ("EA02302E L1 02 0MM", where "02" is a smaller font and slightly higher than the previous baseline, followed by "0MM" on the original baseline)
  • Mastering SID Code ("IFPI L126")
• Inner ring for Layer 0
  • Code 39 Barcode of the the Mastering Code (*EA02302E L0*)
  • Text for Mastering code ("EA02302E L0 06", where "06" is a smaller font and slightly higher than the previous baseline)
  • Mastering SID Code ("IFPI L126")

An inner porition with Xbox logo:

• 3 times "XBOX" text with "X Logo" in the background on each side
• 1 time "XBOX" text with blank background
• 3 times "XBOX" text with "X Logo" in the background on each side
• Another tiny pattern segmented into 7 portions in alternating position,(opposite of the "XBOX" text without logo)
  • 4 times a Xbox logo
  • 2 times the word "genuine"
  • and in the middel the word ASPnnnn where n is a number^{[citation needed]}

ASP code

Detail of the DVD hologram, reflecting the ASP5080 by the flash of the camera. found on a demodisk (IM00113E-IM)

The following table lists known ASPnnnn numbers found on Xbox dvd disks, they are also on 360 disks but we dont list those in this wiki. The games listed are examples, its known for sure more disks can have these numbers and further research can be done, to determine the meaning. It is rumoured it might be a version string of some sorts slowly raising in xbox years old. ^{[citation needed]}

Dumps

Files

Disc Manufacturing Information (DMI.bin)

2048 Bytes

READ DVD STRUCTURE with format 0x04

Physical Format Information (PFI.bin)

2048 Bytes Read from the Lead-In.

READ DVD STRUCTURE with format 0x00

Security Sectors (SS.bin)

Challenge entry (11 Bytes):

Security sector range (9 Bytes)

Unknown1 (44 Bytes)

Complete format (2048 Bytes):

All other fields are assumed to be zero!

Decryption of challenge entries

Starting at offset 1183, a 44 byte SHA-1 hash is generated. The resulting hash - the first part of it, to be exact - is fed as the key into RC4 decryption. The output of SHA-1 contains 160 bits of information. 160 / 8 = 20 bytes of information. To express this as a printable hex digest requires 40 characters. The SHA-1 hash is converted to a hex digest and then the first 7 of the characters are fed into the RC4 initialization function as the key. Then, the RC4 decrypter does its work on the 253 Bytes of the challenge entries (Offset 770).

There'll only be a handful of valid entries in the challenge entries. However there'll be at least 2.

Dumping

To dump Xbox Game Discs you need one of the following drives / firmwares:

Please note that the modified firmwares are based on copyrighted material and can therefore not be legally shared here. Patch files to patch original firmwares into dumping-firmwares would be appreciated.

Flashing software:

• TSDNMAC for MacOS
• SFDNWIN for Microsoft Windows 2000 and XP
• TSDNWIN for Microsoft Windows Vista and 7
• Dell SFDNDOS and the newer TSDNDOS for Microsoft DOS

For current dumping instructions see the Dumping Guide by the Redump Project.

Xbox related commands

Enable Unlock 1 (xtreme) state

Supported by: Kreon 1.00

FF 08 01 01

Enable Unlock 1 (xtreme) state' as we already know it from the 360 xtreme modded drives. This command is supported for legacy reasons only. Custom applications should use the new 'Set Lock State' instead.

Set Lock State

Supported by: Kreon 1.00

FF 08 01 11 xx

• xx=00 - Drive locked (no unlock state)
• xx=01 - Unlock State 1 (xtreme) enabled
• xx=02 - Unlock state 2 (wxripper) enabled

SS extract command

Supported by: Kreon 1.00

AD 00 FF 02 FD FF FE 00 08 00 xx C0

This is the well known from the xtreme firmware.

Get Feature List

Supported by: Kreon 1.00

FF 08 01 10

This command will return a list of the additional features supported by the drive. All values returned are 16 bit values, and the list is terminated with null (0x0000). The two first words of the returned list always reads as 0xA55A 0X5AA5 in order to guarantee that a reply from a drive not supporting this command correctly isn't mistaken for a feature list.

An example feature list could be: 0xA55A, 0x5AA5, 0x0100, 0xF000, 0xF001, 0x0000

This list would indicate that the drive supports XBOX360 Unlock 1, Lock and Error Skip, as it can be seen from the values defined below:

XBOX 360 related features:

• 0x0100 : The drive supports the unlock 1 state (xtreme)
• 0x0101 : The drive supports the unlock 2 state (wxripper)
• 0x0120 : The drive can read and decrypt the SS
• 0x0121 : The drive has full challenge response functionality

XBOX related features:

• 0x0200 : The drive supports the unlock 1 state (xtreme)
• 0x0201 : The drive supports the unlock 2 state (wxripper)
• 0x0220 : The drive can read and decrypt the SS
• 0x0221 : The drive has full challenge response functionality

General drive features:

• 0xF000 : The drive supports the lock (cancel any unlock state) command
• 0xF001 : The drive supports error skipping

This is the complete list of defined features at the moment. If you're working on a custom application you might want to contact me in order to get the latest list.

References and links

• http://dark.ellende.eu/public/360DVDfirmwareRelatedInfo.pdf
• Overview of the challenge/response security protocol
• Xbox Game Discs preserved by the Redump Project
• Missing Xbox Game Disc dumps at Redump Project