Outlast 2 .UPK

[Sajjad_Rahim]

Hi
i usually use offzip to decrypt upk files but with this game i cant
if anyone can help i will e thankful

here a sample file

[Ekey]

http://gildor.org/downloads

[Sajjad_Rahim]

http://gildor.org/downloads

already tried this but no luck... this game use modified version of unreal engine 3

[Sajjad_Rahim]

game released, here some files hope someone can help

https://mega.nz/#!9UIT3D4a!AIhAr4z5KBoQ ... 5hNZkIJMRo

[rdlady]

I'm having a similar problem trying to extract upk files from a game called Nosgoth. I tried umodel but had similar errors, and Nosgoth is not in the list of priorities of umodel developer.

If I use offzip, I'm able to extract a bunch of dat files, but they don't seem to make sense at all, looks like the upk files are encrypted.
I know it is possible to develop an algorithm to decrypt those files, one guy on Steam forums was able to build an upk decryptor for Rocket League, a game developed by the same company that developed the Nosgoth game.

I have experience in C# and C++ so I could try to develop a tool if I know where to look for learning more about upk decryption.
Anyone knows where I can find some nice content to start learning about how to decrypt upk files?

Thanks!