ROM Hack Citra dlc cia decrypting

[madah123]

Hello,

It seems citra now supports installing cia DLC, but is there any source of decrypted cia DLC? As I don't have a 3ds atm. I tried using ctrtool to decrypt the encrypted cia dlc files but I don't think it's working, though that might be due to my misuse I am not sure?

 

[madah123]

bump

 

[Subötaï]

CIA content decryption tool:
https://www.google.fr/search?q="decrypt_v2.zip"

How to rebuild the CIA file from extracted content files:

makerom -f cia -rsf rom.rsf -o Rebuilded-DLC.cia -ckeyid 0 -major 0 -minor 10 -micro 0 -DSaveSize=0 -dlc -i c.0000.0000005b:0x0000:0x0000005b -i c.0001.00000017:0x0001:0x00000017 -i c.0002.00000018:0x0002:0x00000018

Where c.0000.0000005b, c0001.00000017, c.0002.00000018 is extracted and decrypted content files

rom.rsf:

Option:
  MediaFootPadding: true
  EnableCrypt: false
SystemControlInfo:
  SaveDataSize: $(SaveSize)K

 

[Deleted User]

If it's Encrypted DLC in a CIA file, then I don't believe you'll be able to use HackingToolkit9DS to extract the contents, going by the README. I doubt that ctrtool is going to be of much help either.

Sorry to say, but you're going to need a 3DS with B9S and GodMode9 in order to decrypt the file at this point.

 

[BlackSKirito]

Yeah it sucks, you need a real 3DS to dump DLC now. DLC work with Citra now but require dump with Godmode9 + the latest fix in Citra PR. I posted a post to see if someone kind enough to dump DLCs but has been no luck for 1 day

 

[Subötaï]

You doesn't need a real 3ds. All you need is download the DLC from nintendo CND, decrypt its content and rebuild the CIA file as a wrote earlier

 

[BlackSKirito]

You doesn't need a real 3ds. All you need is download the DLC from nintendo CND, decrypt its content and rebuild the CIA file as a wrote earlier

Well, many people in Citra 4rum said Citra can only read DLCs dumped by Godmode9 + the latest fixed link in the Citra PR so i guess real 3DS only.

--------------------- MERGED ---------------------------

You doesn't need a real 3ds. All you need is download the DLC from nintendo CND, decrypt its content and rebuild the CIA file as a wrote earlier

Here's the link : https://github.com/citra-emu/citra/pull/3917

 

[Subötaï]

there is no difference between nintendo's cdn cia and godmode9 dumps, lol. the cia format is the same.

--------------------- MERGED ---------------------------

they are afraid of legal suits from nintendo, this is the only reason why are they says this

 

[BlackSKirito]

there is no difference between nintendo's cdn cia and godmode9 dumps, lol. the cia format is the same.

Don't know much about dumping so i guess i won't talk about it much. Just 1 more question, if they are the same then why their DLCs worked on Citra but the DLCs i got from other place didn't ?

 

[Subötaï]

DLCs i got from other place didn't ?

E-N-C-R-Y-P-T-Y-O-N

 

[BlackSKirito]

E-N-C-R-Y-P-T-Y-O-N

I have no idea what encryption is ^^!! guess i will just wait and read some more

 

[Deleted User]

I have no idea what encryption is ^^!! guess i will just wait and read some more

Rereading through the thread, what I believe he wants you to do is do a Google search for this decryption tool (as it probably can't be linked here), use it to decrypt the file and extract the contents, then use a tool called makerom to rebuild a decrypted CIA from the extracted file contents. Said decrypted CIA can then be installed with Citra.

Makerom requires an RSF file, which was also posted earlier in the thread.

Not sure what's the point in downloading the titles from the CDN is if you already have the encrypted files on you, though.

 

[randomguy6197]

i have a 3ds with gm9, so if someone shows me how to decrypt titles and their dlc cia files and repack them into one i would be glad to post roms for citra

 

[Deleted User]

i have a 3ds with gm9, so if someone shows me how to decrypt titles and their dlc cia files and repack them into one i would be glad to post roms for citra

You can't post any ROMs here at all. It goes against the site rules.

That said, follow these instructions for dumping physical game carts, and follow these instructions for descrypting CIA files. Decrypting DLC files works the same as for any other title, though you may need to check the Title ID for the DLC you want to dump first.

 

[SonsofOcelot]

CIA content decryption tool:
https://www.google.fr/search?q="decrypt_v2.zip"

How to rebuild the CIA file from extracted content files:

makerom -f cia -rsf rom.rsf -o Rebuilded-DLC.cia -ckeyid 0 -major 0 -minor 10 -micro 0 -DSaveSize=0 -dlc -i c.0000.0000005b:0x0000:0x0000005b -i c.0001.00000017:0x0001:0x00000017 -i c.0002.00000018:0x0002:0x00000018

Where c.0000.0000005b, c0001.00000017, c.0002.00000018 is extracted and decrypted content files

rom.rsf:

Option:
  MediaFootPadding: true
  EnableCrypt: false
SystemControlInfo:
  SaveDataSize: $(SaveSize)K

Hey @Subötaï I can't seem to get the rebuild to work for my DLC and I'm certain it's because I'm screwing up somewhere. I only got decrypted .cxi files when I used the decrypt_v2 tool and I don't have anything resembling the decrypted content file examples you listed. Do I need to do something else with these cxi files?

 

[Subötaï]

makerom -f cia -rsf rom.rsf -o NewDLC.cia -ckeyid 0 -major 0 -minor 12 -micro 0 -DSaveSize=0 -dlc -i 00000062.cxi:0x0000:0x00000062 -i 00000002.cxi:0x0002:0x00000002 -i 00000003.cxi:0x0003:0x00000003 -i 00000048.cxi:0x0009:0x00000048 -i 00000045.cxi:0x000a:0x00000045 -i 00000049.cxi:0x000b:0x00000049 -i 00000046.cxi:0x000c:0x00000046 -i 0000004b.cxi:0x000d:0x0000004b -i 0000003b.cxi:0x000e:0x0000003b -i 0000004d.cxi:0x000f:0x0000004d -i 0000004e.cxi:0x0010:0x0000004e -i 00000050.cxi:0x0027:0x00000050 -i 00000052.cxi:0x0028:0x00000052 -i 00000054.cxi:0x0031:0x00000054 -i 00000057.cxi:0x0032:0x00000057 -i 00000055.cxi:0x0033:0x00000055 -i 00000059.cxi:0x0035:0x00000059 -i 0000006b.cxi:0x0036:0x0000006b -i 0000006c.cxi:0x0037:0x0000006c -i 0000005c.cxi:0x0038:0x0000005c -i 0000005d.cxi:0x0039:0x0000005d -i 0000005e.cxi:0x003a:0x0000005e -i 00000063.cxi:0x003b:0x00000063 -i 00000064.cxi:0x003c:0x00000064 -i 00000065.cxi:0x003d:0x00000065

 

[SonsofOcelot]

makerom -f cia -rsf rom.rsf -o NewDLC.cia -ckeyid 0 -major 0 -minor 12 -micro 0 -DSaveSize=0 -dlc -i 00000062.cxi:0x0000:0x00000062 -i 00000002.cxi:0x0002:0x00000002 -i 00000003.cxi:0x0003:0x00000003 -i 00000048.cxi:0x0009:0x00000048 -i 00000045.cxi:0x000a:0x00000045 -i 00000049.cxi:0x000b:0x00000049 -i 00000046.cxi:0x000c:0x00000046 -i 0000004b.cxi:0x000d:0x0000004b -i 0000003b.cxi:0x000e:0x0000003b -i 0000004d.cxi:0x000f:0x0000004d -i 0000004e.cxi:0x0010:0x0000004e -i 00000050.cxi:0x0027:0x00000050 -i 00000052.cxi:0x0028:0x00000052 -i 00000054.cxi:0x0031:0x00000054 -i 00000057.cxi:0x0032:0x00000057 -i 00000055.cxi:0x0033:0x00000055 -i 00000059.cxi:0x0035:0x00000059 -i 0000006b.cxi:0x0036:0x0000006b -i 0000006c.cxi:0x0037:0x0000006c -i 0000005c.cxi:0x0038:0x0000005c -i 0000005d.cxi:0x0039:0x0000005d -i 0000005e.cxi:0x003a:0x0000005e -i 00000063.cxi:0x003b:0x00000063 -i 00000064.cxi:0x003c:0x00000064 -i 00000065.cxi:0x003d:0x00000065

Ok so that's good to know I need the index and ID... But how does one go about getting those? I'd usually just use my o3ds for this but it's broken ATM and I'm clueless. Thanks for your help so far.

EDIT: Wait is the ID just the title ID of the dlc? Pretty sure it is but wanted to be clear.

EDIT: I seem to have gotten it to work by just setting the cmd as you listed and specifying the cxi's as

-i "file.cxi:0:0" -i "file.cxi:1:1" etc.

I'll start a new thread if I encounter any issues. Thank you!

 

[John1234]

Can anyone upload a video of how to use makerom. Not good at using cmd.