Evolve (.PAK)

[Splasher9]

Hello there, Xentax veterans. :D

As you probably know there was an open alpha run of the game Evolve made by Turtle Rock Studios, which also made Left 4 Dead. Pretty interesting content though. It's been only an alpha, but if anyone already wish try to open game archives .pak files, here they are:

<removed due forum rules>

As i get it the developers promise to add content to the game gradually.

And here is some pics from the game, if someone is interested:
https://mega.co.nz/#F!khoVmQAa!o3puUf8pVBKHKhwzHhJvLQ

[Sir Kane]

It's almost identical to Crysis 3.

[Splasher9]

So, it's a good news then, right?

I've tried Crysis 3 pak extractor, CryUnpack and PakDecrypt on archives, but it didn't work out. So I guessing we need some fixed crysis 3 bms script for Evolve. Maybe someone good with coding will give us a hand then.

[ProdigySim]

I would also be interested in this. If we assume that it's just a different decryption key, is there any documentation/references for how the key was found for other cryengine games? I've got some RE background and might be able to work on this with a little background information to jump start the process.

[Splasher9]

From this topic viewtopic.php?f=10&t=9818&start=15:

>They keys (there's 16 of them) and IV are the PAK. But they're RSA encrypted with a fixed key (found inside the exe).

>As said Aluigi, author of quickbms, encryption key was stored in CrySystem.dll

Don't know, may help. If needed, I can upload any other files from alpha.

[fu0]

There's what looks to be a 140 word encryption key in Bin64_SteamRetail/StaticLauncher64.exe at the address $02B1D450, not gonna post it here because that's against the rules. Using that key in the Crysis 3 PakDecrypt just gives me 0kb zip files when they're extracted though, so I'm probably missing something else.

[Kein]

Bumping this one. Interested as well

[Ekey]

Using that key in the Crysis 3 PakDecrypt just gives me 0kb zip files when they're extracted though, so I'm probably missing something else.

Because modified ZIP structure and modified XXTea Keys.

1) ASR yeK

2)

Code: Select all

XXTea_Delta = 0x9E3779B9;

XXTea_Keys:
sub     ecx, 4E0AD646h
add     eax, 1691828Dh
add     ecx, 1A09D20Ch
add     eax, 171B8BBCh

[Flackjack]

Ok guys,I'm new here ,I love this game and would love to get my hands on some of the sound files for ringtones and whatnot for ex
I have tried these so called .Pak extractors and the thing I noticed is these extractors don't work. It has to be something made for the specific game,I bet you all know this since I'm the noob here.

Is there a way or software that would let me view and open this games files? I was assuming since it uses cry engine the crysis extractor would work but that failed also.

Keeping an eye out for this since I cannot do anything by myself yet due to lack of knowledge.
Any help from you guys would be awesome and if I can help in any way let me know.

[Kein]

As far as I understood it is encrypted so there is no way to unpack it.

[Flackjack]

Isn't that true for most game releases nowadays?
Somehow people get around it.

[volfin]

As stated it's Cryengine 3, so you just need to recompile the PakDecrypter from Cryengine 3 (viewtopic.php?f=10&t=9818&start=30 ) but using the key Ekey provided. (and a small code change I guess per Item 2)

[Kein]

Anyone up to the task if it is not that hard as volfin mentioned?

I don't have VistualStudio or any suitable compiler installed and even if I did i have no idea what changes required anyway.

[Splasher9]

Yeah, agree with Kein.

I can barely into coding, so if anyone can help with the PakDecrypt for Evolve, will be grateful.

[Kein]

bump?