WRC 5 PC [.PAC/.PWS], Someone ?

[RageX]

WRC 5 is released today on PC and as we know the developer is no longer Milestone who used to build WRC games with their MIX file format. The developer, Kylotonn behind WRC 5 used PAC/PWS file format for the game.

Can anyone please check the files and hopefully write unpacker/repacker for the game ?

PAC file sample :-

Code: Select all

https://www.dropbox.com/s/r1vp7wd6r2uva6w/PAC.7z?dl=0

PWS file sample :-

Code: Select all

https://www.dropbox.com/s/eatozdwkwmf6wef/PWS.7z?dl=0

[aluigi]

type1.pac is probably an obfuscated/encrypted zip file
type2.pac is just a normal zip file
For the PWS files my suggestion is to use offzip at the moment.

[markfiter]

aluigi
A decryptor\encryptor is needed here. Most of files are encrypted.

[aluigi]

If the key is fixed, this script can do the job:
http://aluigi.org/bms/wrc5_paczip.bms

[aluigi]

So any feedback?

[TheRanger]

So any feedback?

It works bro as usual, any way to encrypt the unpacked zip back into pac ? And what about PWS ?

[aluigi]

Cool.

To re-encrypt your new zip file just reuse the same script.
It automatically checks if the extension is ZIP and in that case encrypts and creates a PAC file, otherwise decrypts the PAC in a ZIP.

As suggested in my first post, currently offzip is the best and easiest solution for the PWS archives.

[spider91]

No need to reencrypt zip's. Game should work with normal zip's renamed to pac.

Also key for the odd bytes at the end seems to be diferent for some pac's, but it steel can be unpacked with your's zip.bms.

[aluigi]

If you can provide one of these pac with bad bytes at the end, I can fix the script.

[spider91]

http://www36.zippyshare.com/v/rY3enan5/file.html

[aluigi]

Fixed in 0.1.1, thanks

[RageX]

Fixed in 0.1.1, thanks

Thanks aluigi, you are an absolute perfectionist when it comes to this

[rallyart04]

Hi guys. It's my problem or is normal from .pac it becomes .tmp ?

example

quickbms + XXX.pac = XXX.tmp

[aluigi]

Check if you have quickbms 0.6.7a and script 0.1.1.
I have checked from both command-line and double-click and it works ever correctly assigning the ZIP extension.

[rallyart04]

script 0.1.1.
quickbms 0.6.7.97

[aluigi]

Uhmmm I have rechecked the script and it's all ok, the extensions are hardcoded so you can't get a ".tmp" that doesn't exist: it's ".pac" or ".zip".

[aluigi]

Any way to replicate the issue?

[rallyart04]

maybe i do something wrong check it please

[aluigi]

Yeah, you have correctly obtained the ZIP archive, the TMP file you see is inside the decrypted zip
So it's correct.

I checked these TMP files and they appear to be archives so I wrote a script on the fly:
http://aluigi.org/bms/wrc5_tmp.bms

[rallyart04]

WOW Aluigi are you an alien? lol I have always used your programs, but I have ever written here and I want to congratulate you thanks so much alien