Homebrewed PS3 System File Editor v0.80 Arrives

[idone]

^^^
Not to be "Mr. Obvious" but DRMDIR seems to be in direct reply to a certain method to decrypt the hdd being published to the web...

Just a little fyi on what happens as a result of "public" study

[cfwprophet]

u have documents certified it?always talk but never with documents

What? On the Wii there is no single document that give infos about a .tik/.tmd/.cert and team twiizers have to unlock the secrets by here own. By the way he is talking about the PS3 not the PSP.Becouse the PSP dont have a hdd as you, for sure, know.

At least as long we dont have a way to fake sign the puplic key or get hands on it trough hacking/exploiting the hardware or some other ways , we cant test it.

Best way would be to alter a .pkg before installing it.For what i have seen the file sys of a WAD from the Wii and a PKG of the PS3 is quite the same.Sure a few things are diff like SHA1 for Wii vs. SHA256 for PS3.

What for the Wii will be the .tik and .tmd will be the param.sfo for the PS3.To think it could be simply swapped without (maybe) re-signing or without (maybe) altering a specific file would be to easy. (We talk off the files from the HDD!!)

[DSpider]

Originally Posted by CJPC I suppose you could decrypt your retail PS3's HDD, fiddle with the SFO, put it back - but its pretty much pointless - there is nothing to accomplish by doing it.

Pointless ? No, not necessarily. If developers could have access to save games... Maybe a buffer overflow in a certain game could result in running unsigned code. Remember GTA: LCS or Lumines on the PSP ? Gripshift ?

Originally Posted by Mathieulh 2. Since 2.80 there is a nice new protection added called DRMDIR, basically they add a directory under the titleid folder (on the hdd) called DRMDIR which contains hashes of the PARAM.SFO and EBOOT.BIN files) This folder is created upon package install and will of course prevent you from replacing the PARAM.SFO (which is too bad since the database issue could have been bypassed after rebuilding it)

Well, we could use that Infectus something-something to go back to 2.70 or similar and replace .sfo files at will !

Originally Posted by Mathieulh UPDATE: For those who wonder why not just replace the DRMDIR folder, its content is not viewable under user/game priviledges, also the hashes stored there are not the standard md5 or sha1 you are used to see but based on a hmac algorithm.

Could it be viewable with kernel privileges ? Once we do something with those modified .sfo files, of course.

Originally Posted by Mathieulh Anyway this idea is stupid and wont work. (not to mention you would need to go through the hassle of decrypting, encrypting your hdd (which would take hours for each step) etc etc each time you want to change your game. Not worth the trouble, you are better off purchasing your games than doing this.

Not if you buy an external HDD (which are pretty cheap now). You could transfer the backups to the internal HDD and let the PS3 encrypt the data on the fly. But my best bet would be a "redirection" of the BluRay drive to an SSD (1ms access time). Even tho their a bit pricey, they will probably provide much much better loading speeds than the BR drive. Again, kinda like the PSP with the UMD format. Games would load faster and perform better.

[Mathieulh]

Originally Posted by DSpider Pointless ? No, not necessarily. If developers could have access to save games... Maybe a buffer overflow in a certain game could result in running unsigned code. Remember GTA: LCS or Lumines on the PSP ? Gripshift ?

The ps3 is not a psp, period.

Originally Posted by DSpider Well, we could use that Infectus something-something to go back to 2.70 or similar and replace .sfo files at will !

No you could not, ever since 2.10 you can no longer use infectus to downgrade even if you possess a nand dump from your own ps3 (not to mention that the new ps3s have /dev_flash stored on the hdd), beside even if you could, can you imagine the hassle it would be to do that all the time ?

Originally Posted by DSpider Could it be viewable with kernel privileges ? Once we do something with those modified .sfo files, of course.

Yes you could but then what would be the point ? There would be more efficient ways of running backups then.

Originally Posted by DSpider Not if you buy an external HDD (which are pretty cheap now). You could transfer the backups to the internal HDD and let the PS3 encrypt the data on the fly. But my best bet would be a "redirection" of the BluRay drive to an SSD (1ms access time). Even tho their a bit pricey, they will probably provide much much better loading speeds than the BR drive. Again, kinda like the PSP with the UMD format. Games would load faster and perform better.

Aren't you forgetting something ? The bluray disc binaries aren't signed to run from the hard disc and even if they were, the paths still point to dev_bdvd
beside the loading speed wouldn't be that better considering most games sport hdd installs, so that excuse holds on psp but certainly not on ps3.

Originally Posted by DemonHades u have documents certified it?always talk but never with documents

A log is worth more than a thousand words (see below), but perhaps you could just install something on 2.80+ and decrypt the harddrive, then you will figure it out. And of course there are not any kind of public documentation regarding this point. It is not like sony is handling a ps3 wiki.

/dev_hdd0/game/TEST00000 entry:                                                 
                                                                                
d: .                                                                            
d: ..   
d: DRMDIR                                                                       
f: PS3LOGO.DAT                                                                  
f: PARAM.SFO                                                                    
f: ICON0.PNG                                                                    
d: USRDIR

Last edited by CJPC; 10-16-2009 at 02:00 PM. Reason: Fixed bad quote tag

[DemonHades]

thx math,how tell u from msn sorry for the coments,that explanation is best and good words

1saludo