Editing Bluray disc
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== Overview == | == Overview == | ||
* [http://www.osta.org/specs/pdf/udf260.pdf UDF] filesystem (a profile of [http://www.ecma-international.org/publications/files/ECMA-ST/Ecma-167.pdf ECMA-167]) | * [http://www.osta.org/specs/pdf/udf260.pdf UDF] filesystem (a profile of [http://www.ecma-international.org/publications/files/ECMA-ST/Ecma-167.pdf ECMA-167]) | ||
* | * UDF filesystem itself is in cleartext | ||
* some files are encrypted | * some files are not encrypted | ||
* Some regions of the disc are encrypted (sector by sector) which maps to some files on the filesystem | |||
* | * One sector is 2048 bytes | ||
* The first sector describes which part of the disc is encrypted (see below) | |||
* The second sector has information about the disc | |||
== Disc Info == | == Disc Info == | ||
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</pre> | </pre> | ||
* The first 16 bytes | * The first 16 bytes identidy a PS3 disc. | ||
* The next 32 bytes are the disc ID (with space padding) | * The next 32 bytes are the disc ID (with space padding) | ||
* 0x840: ? | * 0x840: ? | ||
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* with the IV 0x69474772af6fdab342743aefaa186287 | * with the IV 0x69474772af6fdab342743aefaa186287 | ||
* no padding | * no padding | ||
* data1 is available in the IRD file | |||
* alternatively data1 can be found on the disc with a bunch of SCSI commands. | |||
* | |||
=== Sector encryption === | === Sector encryption === | ||
Each | Each sector is encrypted with AES CBC: | ||
* using the disc key | * using the disc key | ||
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== IRD file == | == IRD file == | ||
3k3y generates [http://jonnysp.bplaced.net/ IRD files] which contains some information about the disc. In particular, it contains "data1" which is used to | 3k3y generates [http://jonnysp.bplaced.net/ IRD files] which contains some information about the disc. In particular, it contains "data1" which is used to derived the disc AES encryption key. | ||
The file is: | The file is: | ||
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* Integer are in little endian format: | * Integer are in little endian format: | ||
* Variable length strings use a [https://msdn.microsoft.com/fr-fr/library/system.io.binaryreader.readstring(v=vs.110).aspx compressed length prefix]. | * Variable length strings use a [https://msdn.microsoft.com/fr-fr/library/system.io.binaryreader.readstring(v=vs.110).aspx compressed length prefix]. | ||
Compressed data are compressed with gzipped and prefixed with a length (uint32). | |||
The format is (v6 to v9): | The format is (v6 to v9): | ||
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!Example | !Example | ||
!Versions | !Versions | ||
|- | |- | ||
|4B | |4B | ||
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|Magic string ("3IRD") | |Magic string ("3IRD") | ||
|3IRD | |3IRD | ||
| | | | ||
|- | |- | ||
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|Version | |Version | ||
|6, 7, 8, 9 | |6, 7, 8, 9 | ||
| | | | ||
|- | |- | ||
|9B | |9B | ||
|string | |string | ||
| | |Game ID | ||
|BCES01584 | |BCES01584 | ||
| | | | ||
|- | |- | ||
|var | |var | ||
|string | |string | ||
| | |Game name | ||
|The Last Of Us | |The Last Of Us | ||
| | | | ||
|- | |- | ||
|4B | |4B | ||
|string | |string | ||
| | |Update version | ||
|4.41 | |4.41 | ||
| | | | ||
|- | |- | ||
|5B | |5B | ||
|string | |string | ||
| | |Game version | ||
|4.41 | |4.41 | ||
| | | | ||
|- | |- | ||
|5B | |5B | ||
|string | |string | ||
| App version | |App version | ||
|01.00 | |01.00 | ||
| | | | ||
|- | |- | ||
|4B | |4B | ||
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| | | | ||
|v=7 | |v=7 | ||
|- | |- | ||
|var | |var | ||
|compressed | |compressed | ||
|Header | |Header | ||
| | | | ||
| | | | ||
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|compressed | |compressed | ||
|Footer | |Footer | ||
| | | | ||
| | | | ||
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|uint | |uint | ||
|Region count | |Region count | ||
| | | | ||
| | | | ||
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|… | |… | ||
|… | |… | ||
|- | |- | ||
|4B | |4B | ||
|uint | |uint | ||
|File count | |File count | ||
| | | | ||
| | | | ||
| Line 372: | Line 342: | ||
| | | | ||
| | | | ||
|- | |- | ||
|16B | |16B | ||
| Line 385: | Line 354: | ||
|… | |… | ||
|… | |… | ||
|- | |- | ||
|115B | |115B | ||
| Line 398: | Line 360: | ||
| | | | ||
|v=9 | |v=9 | ||
|- | |- | ||
|16B | |16B | ||
|bytes | |bytes | ||
|Data 1 | |Data 1 | ||
| | | | ||
| | | | ||
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|bytes | |bytes | ||
|Data 2 | |Data 2 | ||
| | | | ||
| | | | ||
| Line 419: | Line 378: | ||
| | | | ||
|v<9 | |v<9 | ||
|- | |- | ||
| | |2B | ||
|uint/bytes | |uint/bytes | ||
|UID | |UID | ||
| | | | ||
| | | | ||
|} | |} | ||
== References == | == References == | ||
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* 3k3y IsoTools, this is a .NET program available in binary form. The [https://github.com/icsharpcode/ILSpy ILspy] decompiler produces a very readable output. | * 3k3y IsoTools, this is a .NET program available in binary form. The [https://github.com/icsharpcode/ILSpy ILspy] decompiler produces a very readable output. | ||
* PS3 ISO Patcher by BlackDaemon, is a .NET program available in source code | * PS3 ISO Patcher by BlackDaemon, is a .NET program available in source code | ||
{{Reverse engineering}}<noinclude>[[Category:Main]]</noinclude> | {{Reverse engineering}}<noinclude>[[Category:Main]]</noinclude> | ||