I am Setsuna (Encrypt/Decrypt)

[makc_ar]

Game: http://store.steampowered.com/app/441830/

All files ...Message: https://mega.nz/#!NwZgiCDY!ei_JlAGIYCS6 ... uUNxPf3Y3A
parameter.cpk unpacked: https://mega.nz/#!kwY3ybKC!6PeX_xOD_-zq ... Pjo0Jma1d8

[Ogoshi]

Hey man, how can i translate this game with this archives?

[makc_ar]

Hey man, how can i translate this game with this archives?

I don't know how to translate, sorry.

[Ogoshi]

Theses files are all localization of the game?

Alluigi can help me?

[aluigi]

Maybe someone with the game will have some fun finding the key and the encryption algorithm.

[Ekey]

AES
Key: 8xTD|EgD|b?07QDj
Vector: /]s@*CxLzM!9Qd%(

[Ogoshi]

AES
Key: 8xTD|EgD|b?07QDj
Vector: /]s@*CxLzM!9Qd%(

What is this? x_x

[happydance]

just wondering how do you guys get those encryption algorithm?

[aluigi]

script for quickbms:

Code: Select all

encryption aes "8xTD|EgD|b?07QDj" "/]s@*CxLzM!9Qd%("
get SIZE asize
get NAME filename
string NAME + "_decrypt"
log NAME 0 SIZE

[GrandGTO]

Hello,

Are you sure about the AES key ?
Because with quickbms and the script, I still can't read the dialogue file.

[aluigi]

The key and ivec that Ekey provided work perfectly with the messages.rar samples provided by makc_air, the decrypted files contain binary data and unicode strings.

[GrandGTO]

OK I have this :
http://www.noelshack.com/2016-30-1469631238-capture.png

What software could work better to edit dialogue lignes ?

Then, How makc_ar get these files ?

[aluigi]

I guess he got the files from parameter.cpk using the cpk.bms script.

Without a custom solution to parse and edit that specific type of files, the only "solution" is using a hex editor without modifying the size of the strings and file itself.

[GrandGTO]

Thanks for your help. Yes that's it !

- Ok I have decrypted the cpk file thanks to your script. Now I have several files of dialogue like makc_ar have sent.

- I use the script that you have posted to decrypt all these files. I can read some words on these files.

- Now I think I have to do the way back ? I mean I have to encrypt all files like they were before, and make a new cpk files. Is It possible ? And how ?

[aluigi]

Sure:

Code: Select all

encryption aes "8xTD|EgD|b?07QDj" "/]s@*CxLzM!9Qd%(" 1
get SIZE asize
get NAME filename
string NAME - "_decrypt"
log NAME 0 SIZE

It saves the file without the "_decrypt" suffix so it will have just the original name.

[GrandGTO]

That's fine ! Now just miss to make the new cpk file from all files.

[aluigi]

That's something hard... in fact the script is partially valid for reimporting because the compressed files will fail when the game reads them (there is a note in quickbms.txt when you search cpk_compress)

[AnonBaiter]

(there is a note in quickbms.txt when you search cpk_compress)

Speaking of that, have you ever tried to contact CRIWARE to obtain an SDK? It might have some tools necessary for researching purposes.

[aluigi]

Have you read the note? There is no problem with the compression itself, the problem is the same of lz4 in reimport mode with the original ZSIZE differing than the new one due to the lack of end markers in the specifications of the algorithm.

[AnonBaiter]

Well I wasn't aware of that, but I'm talking about archives in which cpk.bms can't otherwise handle.