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March 15, 2013 // 8:50 pm - Following up on the previous updates, today PlayStation 3 developer Flat_z has revealed the Sony PlayStation 2 (PS2) Classics algorithm with details below.

Download: Sony PlayStation 2 (PS2) Classics Algorithm

To quote: Ok, guys. Unfortunately I forced to admit that I have no more time to work on PS3 stuff because I'm very busy lately. So I decided to publish all information related to PS2 classics as JuanNadie did with the NPDRM algorithm one year ago.

Firstly I wanted to say that he was the first who started reverse-engineering on this subject and when he left the scene I decided to continue his work to keep it from going to waste. And so I would like to thank JuanNadie for his amazing contribution to the PS3 scene. Besides that, he gave me some piece of information on the subject.

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All PS2 classics runs within the ps2_netemu.self which represents a different kernel for execution these PS2 games but before it started the VSH module loads your individual data for PSN/SEN (such as act.dat and .rif file for your game). It is absolutely the same process as used for usual PSN games and the goal of it is getting the key used for decryption of PS2 content which includes an optional CONFIG file, ISO.BIN.EDAT and ISO.BIN.ENC.

The latest one is the actual encrypted disc image of the game. All mentioned files are encrypted with the same key (called klicensee) which is stored in encrypted form inside .rif file for your game and it decrypted with the specified key from key table stored in act.dat. When you get this key you can decrypt ISO.BIN.EDAT and see if it contains a game title (for example, SLUS-20062 for GTA 3). This will mean that key is correct. Since almost all the information regarding EDATs is known (see ps3devwiki.com/wiki/Talk:EDAT_files and ps3devwiki.com/wiki/Talk:NPDRM_Selfs) I will not going to explain it again.

Well, now there are two another formats along with EDAT. Let's call the first one as ENC (it represents the actual disc image) and the second as VME (encrypted virtual memory cards). They are encrypted using different algorithms. The ENC format is similar to EDAT and the VME format have a simple encryption layer.

As I said before, ENC file is similar to EDAT and it have the header like in EDAT (but with different magic) and composed of segments of 16384 bytes each (you can see it at the header). I just remind you that file header consists of file magic (PS2\x00), version number (major and minor: 01.01), license type (it always 0x02), application type (0x01), content id, QA digest (seems like to be a SHA-1 hash of the non-finalized file generated using the tool from SDK), CID-FN hash (an AES CMAC hash of concatenation of content id and file name using the third NPDRM OMAC key as CMAC key), header hash (an AES CMAC hash of the 0x60 bytes from the beginning of file using xored bytes of the first NPDRM OMAC key and the second NPDRM OMAC key as CMAC key), time information which includes start and end time of the validity period (they are usually zeroed, base ticks = 62135596800000000), file flags (always zeros), segment size (16384 bytes), data size of the file data, two unknown hashes of 16 bytes each, 40 bytes of unknown data (possible another unknown signature) and pair of an ECDSA signature (40 bytes using the second VSH curve and the VSH public key).

I also remind you that two unknown hashes for EDAT case are known and represents meta data sections hash and extended header hash (an AES CMAC hash of 160 bytes from the beginning of file), both hashes uses the hash key as CMAC key and it depends on the file flags and keys). I don't know exactly what hashes are there for ENC format but when we zeroed them it seems like they are not checked on current firmwares. The file header ends at the offset of 256 bytes.

Segments are divided into two types: a meta data section and a file data section. Each meta data section can include 512 entries (max) of 32 bytes each (16384 / 32 = 512) and associates with a particular file data section. So if we have a meta data section which consists of 512 entries then it will mean that there are 512 file data sections after it and each file data section have size of 16384 bytes.

Besides that, the first meta data segment located at the offset of 16384 bytes. I don't know what data are stored before it but we also tried to zero them (these bytes starting at the offset of 256 bytes and ending at the offset of 16384 bytes) and it works as usual. I guess that it can be the encrypted garbage because the alignment of file data should be equal to the segment size.

Now I will explain what keys are used and how they are obtained. ENC/VME files are decrypted using the ENCDEC device so the decryption process are more faster than at EDAT case. While vSH checks files for their validity period, CMAC hashes and ECDSA signature and obtains the key for decryption from .rif file and it makes a system call #475 to LV2 (on older firmwares it was #471) along with the NPDRM information, klicensee, act.dat key and encrypted rif key. LV2 gets your console ID, encrypts the NPDRM constant using it as a key, decrypts the key from act.dat using the encrypted NPDRM constant and finally decrypts klicensee from .rif using the decrypted key from act.dat. Now we have a klicensee which will be used for later decryption process.

For EDAT case we can use free EDATs without .rif but for PS2 classics we should always use paid content and .rif file. So if you want to resign the game you need to generate .rif for the account on your console (I call this process as "personalization"). Don't forget that .rif file should be created for your act.dat (because it shares the account id) and console ID. Let's move on. When the PS3 gets the final decryption key it send a packet to the system manager inside LV1 which sets the inter-lpar parameter of type 3.

This parameter contains a version information and the klicensee. A system manager catches this packet and sends a request to the storage manager inside SS server #1 which then configures ENCDEC keys used for later decryption. It should be kept in mind that keys for decryption differs between CEX and DEX consoles so the storage manager checks the device type and uses different key slots for ENCDEC.

The configuration process started with running isolated SPU SB module which creates the final keys using klicensee as a key seed and send them back to the PPU which then send them to the device directly during the secure session. There are three types of keys: meta key, data key and vmc key and they are configured separately. The process of making keys consists of applying an AES 128 algorithm on the klicensee while using three different keys.

There are SHA-1 hashes of each of three keys (you should decrypt sb_iso_spu_module.self from 4.xx FW and find each of 16 bytes key by its SHA-1 hash):

For CEX mode:

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For DEX mode (you actually don't need it but anyways):

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Now we have all keys which are required to decrypt all files. So what we should also know?

ENC encryption uses an AES algorithm in CBC mode and the initialization vector of all zeros. The actual process of decryption of CONFIG and ISO.BIN.ENC started at seeking to the offset of 16384 bytes. There is a first meta data section so we should use the meta key as key for AES and decrypt the entire segment of 16384 bytes. As I said before each meta data sections contains of some entries and each entry have a size of 32 bytes. Each entry contains a SHA-1 hash (20 bytes) of the corresponding entire encrypted file data section and all these sections are located after this meta data section. After the SHA-1 hash we can see the section index of the corresponding file data section (4 bytes).

The rest is padded of zeros. After decryption of the meta data section we can decrypt all file data sections after it. Now we should use the data key! Before the actual decryption we can check the SHA-1 hash of each encrypted file data section and see if they matched to the hashes at entry table of the meta data section. If the actual file size of the disc image is not a multiple of 16834 bytes then we have less entries inside the latest meta data section.

After we finished the decryption of first 512 file data sections we can started decryption of the second meta data section and set of 512 file data sections after it and so on. I recommend to write decrypted meta data entries to another file than in the same file as file data section. It will make a process more easier. After decryption you should truncate your actual file to the data size specified at the header. Now you got an UDF disc image and you can mount it on your PC, for example.

So what is the next step? The next step is the decryption of encrypted virtual memory cards. Each PS2 classics package contains two empty encrypted virtual memory cards which located at SCEVMC0.VME and SCEVMC1.VME. As far I see they are identical for all games so we can use templates for all new virtual memory cards but only encrypts them with the new klicensee. To decrypt virtual memory cards you need to read an each segment of 16384 bytes and apply an AES encryption in CBC mode too but for this case you should use the VMC key. After decryption you should see Sony PS2 Memory Card Format 1.2.0.0 at the top of file.

Well, I attached a draft script for decryption of ENC/VME files. It was written for Python 2.7 and requires CryptoPlus (can be downloaded from: http://repo.or.cz/w/python-cryptoplus.git) and "ecdsa" (use EasyInstall or another package manager) libraries. I intentionally left all keys as SHA-1 hashes because of legal issues but you can find all keys by yourself using my hints. My script uses CONFIG/ISO.BIN.ENC/SCEVM0.VME/SCEVM1.VME file and klicensee file as input parameters. I hope that someone will create tools for that.

To use the script you need to create a file with name vsh.curves and put the contents of the curve table from VSH (get it from ps3devwiki.com/wiki/Keys at vsh pub + curvetable) and replace all hashes of keys by their real values (see FIXME comments). Also replace three NPDRM OMAC keys and VSH public key by their values from ps3devwiki.com/wiki/Keys.

I think that creation of PS2 remastering tool can lead us to getting the fully working games on our consoles but it requires testing. I recommend to create a static klicensee which can be used to encrypt all images in the same manner (static klicensee can also be implemented by patching VSH/LV2 at runtime, for example). After generating a klicensee you should create all keys based on it.

To build an encrypted disc image you should dump the original disc image and then append zero bytes to the end to make it multiple of 16384 bytes. Then you need to encrypt each of 512 segments using the generated data key. Then you should calculate SHA-1 hashes of each encrypted segment and generate meta data section for each pair of segment hash and segment index. After this you need to encrypt meta data section and so on. At the end you need to write an original disc image size to the header, write a content id for it and generate hashes at the file header.

After building ISO.BIN.ENC file you should create a file with the title id and pad it with zero bytes from the right side to get 12 bytes total. Then you need to create an EDAT container for this file. Hint: you can see a correct title id when mounting a disc image on your PC and looking at SYSTEM.CNF of it.

Unfortunately, I hadn't time to see what the CONFIG file does so I will skip this step. I only know that this file is optional or can be empty inside (after decryption). You are not required (and you simply can't do it) to generate a valid ECDSA signature for files because all custom firmwares are patched to skip the ECDSA check. Will be nice to be able to generate a game package for your PS2 game too if everything will works fine. Remember, that some flags at PS2 pkg format can be different.

Credits to: graf_chokolo, fail0verflow, JuanNadie, ps3dev.net, glevand and all my friends (you know who you are).

Finally, from zecoxao: i found the meta key and data key for cex, as for the vmc key, no clue where it is, the two are both in my previous post. you can check the sha1 of those in any site or with any program that supports it. somebody may post those on the wiki, if they want.

i'm happy... this is good and concise info time to search for more #poop

meta (CEX) : https://mega.co.nz/#!gpdQxZZB!ZlZpYj8luKmJ5K892wHlTHvQ6khvtfEGxba5OJM3-Y4

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data (CEX): https://mega.co.nz/#!B09nwJhQ!TMC3kxaNLKFzYVuSksPs-nEE_AgnAgS2RQ1BzeZBlTM

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From flatz: It is at sb_iso_spu_module.elf too. First two bytes are 64 E3...

VMC key:

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kudos to this man


Sony PlayStation 2 (PS2) Classics Algorithm Revealed by Flat_z

Sony PlayStation 2 (PS2) Classics Algorithm Revealed by Flat_z

Sony PlayStation 2 (PS2) Classics Algorithm Revealed by Flat_z

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#187 - PS4 News - March 13, 2012 // 6:39 am
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Here is mmCM v04.02.02 (20120313) Update for those with the Cobra dongle and the changes outlined below, as follows:

Download: mmCM v04.02.02 Update (20120313) (7.50MB)

mmCM v04.02.02 Update (20120313) Changelog:

  • Added sort options in File Manager:
    -> SELECT+R2 changes sort order: name / date
    -> SELECT+L2 changes sort order: ascending / descending
  • Fixed overlapping of text entries in context menu in File Manager mode
  • Added function to change the font in File Manager mode by pressing [R3]
  • Exiting with {PS} button will save last state and options
  • Added custom commands to FTP (quit/restart the application and shutdown/restart the PS3)
  • Improved font rendering (faster and no more blue-tint artifacts)
  • Improved graphics rendering (no more GUI glitches

#186 - PS4 News - March 7, 2012 // 6:06 am
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Here is mmCM v04.02.01 (20120307) Update for those with the Cobra dongle and the changes outlined below, as follows:

Download: mmCM v04.02.01 Update (20120307) (6.56MB)

mmCM v04.02.01 Update (20120307) Changelog:

  • Improved FTP performance:
    -> 95% of theoretical speed over 100Mbit connection (send/receive)
    -> 90% of theoretical speed over 1Gbit connection (receive) (or 50% of max when sending to PS3)
  • Improved /net_host performance
  • Improved performance when copying files in File Manager mode
  • FTP test results: http://pastie.org/3542821

When viewing the test results above you will see that this 'Minor Update for those who seek the fastest FTP performance on the PS3' infact will get it, as it beats all other 'homebrew' FTP apps like Blackbox, etc. hands down, no contest here.

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#185 - kombat75 - March 1, 2012 // 5:22 am
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Anyone know can i use the deank MM the latest version 04.02.00 ?? because previous MM i having now is the Team Cobra Releases mmCM v04.01.00 ...

Worry it will crash the MM or worst cannot even start the MM Later on after I install the deank MM ..

#184 - mdr3939 - February 29, 2012 // 8:24 am
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Please help !! I installed the latest version (full) of multiman, this went well but when loading the system freezes and shows a screen with a laughing face. When trying to remove this version aI end up with a corrupted icon in the list. I can't install an earlier version because system says that there is already the latest version installed.

How do I completely remove multiman and what can i do to get it working again. I'm on CFW 3.55.

Thnx

#183 - PS4 News - February 29, 2012 // 7:44 am
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Today condorstrike has made available a Metro mmCM PS3 Theme for those interested with details below, as follows:

Download: Metro mmCM PS3 Theme

To quote via tortuga-cove.com/hacking/31-ps3/6572-solar-v41-and-metro-mmcm-theme-released: I took a couple of days off from working on Solar and got bored quickly, so I made an mmCM theme called METRO, 100% compatible with the latest version 04.02.00, but I really don't have time to make themes, so I won't be making any more...

#182 - PS4 News - February 28, 2012 // 5:55 am
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Below is another mmCM v04.02.00 (20120228) Full Update for those with the Cobra dongle and the changes, as follows:

Download: mmCM v04.02.00 Base (20120228) Update / mmCM v04.02.00 Base (20120228) Update (Mirror) / mmCM v04.02.00 Base (20120228) Update (Mirror #2) / mmCM v04.02.00 Full (20120228) Update / mmCM v04.02.00 Full (20120228) Update (Mirror)

28 - 02 - 2012 Changelog:

  • Added new display mode ("TMB" - Top Media Bar) to replace "Box-art" mode
  • Added new option in Settings - "Top Media Bar Color" to set user-defined color for top and bottom stripes in TMB mode
  • Added new background image in the original theme (TMBBG.JPG) for TMB display mode
  • Improved speed when copying files
  • Optimized memory usage (another 10MB of RAM available for operations)
  • Added support for scanning /dev_usb010 to /dev_usb099 for PSX/PS2/PS3/PSP/BD/DVD ISO files
  • Added four (4) new colors to SIDE/TMB color setting options and two options in COLOR.INI to set side/tmb colors from themes
  • Added function to "Quit to XMB" if [CIRCLE] (or [CROSS] if X/O swap is set in options) button is held pressed
  • Added visual slider indication when scrolling trough a lot of entries (XMMB, TMB and XBDM modes + when browsing devices)
  • Reminder for BD-Remote colored keys: RED - Quit, GREEN - Screen Saver, YELLOW - Restart, BLUE - To File Manager and back

#181 - PS4 News - February 23, 2012 // 8:43 am
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Below is mmCM v04.01.04 Full (20120223) for those with the Cobra dongle and the changelog, as follows:

Download: mmCM v04.01.04 Base (20120223) (21 MB - showTIME, ps3NETSRV, lastGAME, bdRESET) / mmCM v04.01.04 Full (20120223) (296 MB - showTIME, ps3NETSRV, lastGAME, bdRESET, 1 motion background, 10 themes, 7020 game covers)

23 - 02 - 2012 - mmCM ver 04.01.04 Full Changelog:

  • Improved FTP transfer speed even more
  • Improved FTP compatibility with certain clients (wininet)
  • Improved "Game list (4x2)" display mode
  • Improved "Game list (poster)" display mode
  • Improved overall speed and stability and fixed some GUI glitches
  • Optimized memory usage (10MB more RAM available for operations)
  • Optimized caching procedure for game icons and backgrounds (ICON0/PIC1.PNG) - faster and less HDD space used
  • Added "Group Titles by Genre" option in the SIDE menu and changed the function of [SQUARE] button: now opens "Game Settings" menu.

#180 - Tidusnake666 - February 22, 2012 // 7:22 am
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Hello,

Anyone kind enough to link me to new LAST GAME app for mmCM v4?

I had mine from v2, and now when updater to v4, last game app just refuses to work

UPD: Okay, found it. It's LASTGAMEv2.pkg inside "Base" 4.01.00 distro

#179 - PS4 News - February 17, 2012 // 1:00 am
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Another multiMAN Cobra Manager (mmCM) v04.01.03 update for those with the dongle and the changes, as follows:

Download: multiMAN v04.01.03 Update (20120217) (4.88 MB)

17 - 02 - 2012 Changelog:

  • Changed: 4x2 display mode is rewritten to use XMMB engine which makes it 5x faster and allows access to all content (Games/Music/Video/Photo/Retro/ISO)

  • Added "4.11" option in "System Firmware Version" to spoof reported version to the latest OFW 4.11

  • Added support for loading network PSX/PS3/BD/DVD ISO/BIN+CUE images to lastGAME2 application

  • Added proper support for covers in "Coverflow" mode, without affecting XMMB and other display modes (covers in Coverflow/4x2 modes and icons in BOARD mode)

  • Added PIN-protected option "Reset Options to Default" in SETTINGS (press [TRIANGLE] to access it in the SIDE menu). Default PIN is "0000".

  • Added support for forcefully resetting mM to default during boot if L2+R2+L3+R3 buttons are pressed

  • Changed: PIN-protected options will not prompt for PIN code if using the default PIN "0000". If "Parental Level" is set, games which require higher level will still require PIN.

#178 - PS4 News - February 13, 2012 // 12:27 pm
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Below is another multiMAN Cobra Manager (mmCM) v04.01.02 update for those with the dongle and the changes, as follows:

Download: multiMAN v04.01.02 Update (20120213) (4.52 MB - Can be used to update 04.xx.xx to 04.01.02) / multiMAN v02.09.02 Full (20111011) (106.18 MB - 3090 covers - showTIME lastGAME bdRESET ebootFIX ebootMOD ps3SERV)

13 - 02 - 2012 - Changelog:

  • Added support for creating ISO/BIN+CUE images from PS2 CD and PS1/PSX CD *directly* to remote host

  • Added automatic extraction of thumbnails after ISO/BIN+CUE is created (PS3/PS2/PSX/BD/DVD)

  • Added support for displaying coverart/jacket for Blu-ray and AVCHD discs (if /HDAVCTN or /BDMV/META/DL folders contain jpg jacket-image)

  • Added support for creating ISO files from folders to remote host (ISO is cached to internal HDD and then moved to remote host)

  • Improved FTP transfer speed (up to 10MB/s over 100Mbit connection)

  • Improved transfer speed from and to remote hosts (/net_host) (up to 10MB/s over 100Mbit connection)

  • Improved scanning of remote host content folders

  • Added support to set "External Game Data" for games/applications installed under /dev_hdd0/game or /dev_usbxxx/GAMEI (RELOAD.SELF required)

  • Fixed few issues introduced in 04.01.01, related to displaying/refreshing Retro/Music/Photo columns