Game packages (UPKs)

[HexPa5]

Hello everyone, Im really interested in modding games on Unreal Engine 3, expecialy Batman Arkham City. What I want, is open Package file called 'Playable_Batman_Year_One_SF' by UDK Editor (Unreal Development Kit). The problem is, I can't open it correctly. It always say Load Error. I know what reason is, these files are protect and encrypted. My goal is decrypt them via HEX EDITOR, but I don't know how to do.

Looking forward to help, step by step.

[HexPa5]

Recently, I decided to install quickBMS. I know how it work, anyway I don't need check every time if ALL files fit to my specific upk package and game. This is Batman Arkham City game, developed by Rocksteady Games on Unreal Engine 3 or UDK, whatever, I check three last, condemned2, fear, and yoyogames and I can't decrypt it.

HELP!

[DJ Normality]

Try to use the unpacker from Injustice 2. That does the decryption of .UPK/.UND files.
viewtopic.php?t=7037
I know for a fact you can unpack this game because I have already have. That was about 2 years ago though so not sure how I did it.

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