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RageX, posted Fri Oct 09, 2015 3:40 pm (8267)

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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:

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

PWS file sample :-

Code:

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

aluigi, posted Sat Oct 10, 2015 8:20 am (8300)

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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, posted Mon Oct 19, 2015 7:44 pm (8654)

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

aluigi, posted Mon Oct 19, 2015 11:58 pm (8659)

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

aluigi, posted Thu Oct 22, 2015 8:35 am (8762)

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So any feedback?

TheRanger, posted Thu Oct 22, 2015 8:42 am (8764)

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aluigi wrote:

So any feedback?

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

aluigi, posted Thu Oct 22, 2015 9:00 am (8766)

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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, posted Thu Oct 22, 2015 8:11 pm (8797)

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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, posted Thu Oct 22, 2015 8:33 pm (8800)

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

spider91, posted Fri Oct 23, 2015 7:29 am (8818)

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

aluigi, posted Fri Oct 23, 2015 7:41 am (8819)

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Fixed in 0.1.1, thanks

RageX, posted Fri Oct 23, 2015 8:59 am (8820)

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aluigi wrote:

Fixed in 0.1.1, thanks

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

rallyart04, posted Fri Oct 23, 2015 9:07 pm (8827)

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

example

quickbms XXX.pac = XXX.tmp

aluigi, posted Fri Oct 23, 2015 9:48 pm (8829)

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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, posted Fri Oct 23, 2015 9:54 pm (8830)

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script 0.1.1.
quickbms 0.6.7.97

aluigi, posted Fri Oct 23, 2015 9:57 pm (8831)

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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, posted Fri Oct 23, 2015 10:00 pm (8832)

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Any way to replicate the issue?

rallyart04, posted Fri Oct 23, 2015 10:03 pm (8833)

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maybe i do something wrong check it please

aluigi, posted Fri Oct 23, 2015 10:13 pm (8835)

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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, posted Fri Oct 23, 2015 10:18 pm (8836)

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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

aluigi, posted Fri Oct 23, 2015 10:33 pm (8837)

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rallyart04, posted Fri Oct 23, 2015 10:51 pm (8838)

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aluigi the ptx file need another script ?

aluigi, posted Fri Oct 23, 2015 10:59 pm (8839)

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I have various ptx files in engine.pac and they are just text.
Have you opened it with a text editor?

rallyart04, posted Fri Oct 23, 2015 11:04 pm (8840)

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yes but nothing happen i think they are texture with extension .ptx