Help to Unpack archeage game_pak file

[rade006]

Hello,

I am trying to open the game_pak file of the archerage game (archeage's private server).
I used the dms file archeage.bms but it throws me the error:

Code: Select all

 offset           filesize   filename
--------------------------------------

- signature of 4 bytes at offset 0x0000000000000000 doesn't match the one
  expected by the script:

  this one: "ʏ"
  bd a0 ca 8f                                       ....

  expected: "WIBO"
  57 49 42 4f                                       WIBO

- 0 files reimported in 0 seconds
  coverage file 0     0%   512        39044838400 . offset 000000091740f400
  coverage file -1    0%   4          512        . offset 0000000000000004

I opened the game_pak (archerage) file with a hexadecimal editor and I see the following.

I opened the original archeage game_pak file with a hexadecimal editor and see the following.

I have modified the file archeage.bms without achieving results.
From what I see the file that I want to unpack (archerage) is not encrypted so it should be easier, but still I do not get good results.

Can you help me create the bms script to unpack the game_pak file?

Thank you.

[IDontKnowMuch]

Can you share the archerage file?

[rade006]

Hi,

this is the download link

[aluigi]

Wow over 36 Gb, I guess it's a new record here

Maybe you can use the filecutter script on that giant file and upload the 2 files it generates:
http://aluigi.org/bms/filecutter.bms

[rade006]

Hi, I used the filecutter script and these are the two files that it generated.

here

Regards.

[aluigi]

I bet it's just a different encryption key.
I doubt someone is interested in reverse engineering it.

[rade006]

Do you have a link out there that will help me start with the reverse engineering of this file?

[aluigi]

Reverse engineering a software is not something that you can learn with a link on the fly.
Considering this is a private server it may even be protected against debugging and so on.