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PostPosted: Tue Apr 16, 2019 10:28 pm 

Joined: Tue Apr 16, 2019 9:55 pm
Posts: 4
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:
 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.
Image
I opened the original archeage game_pak file with a hexadecimal editor and see the following.
Image
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.


Last edited by rade006 on Fri Apr 19, 2019 12:49 pm, edited 1 time in total.

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PostPosted: Tue Apr 16, 2019 10:48 pm 

Joined: Sat Apr 13, 2019 4:19 pm
Posts: 12
Can you share the archerage file?


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PostPosted: Fri Apr 19, 2019 12:45 pm 

Joined: Tue Apr 16, 2019 9:55 pm
Posts: 4
Hi,

this is the download link


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PostPosted: Sat Jun 01, 2019 3:59 pm 
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Joined: Wed Jul 30, 2014 9:32 pm
Posts: 10569
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


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PostPosted: Tue Jun 11, 2019 6:14 pm 

Joined: Tue Apr 16, 2019 9:55 pm
Posts: 4
Hi, I used the filecutter script and these are the two files that it generated.

here

Regards.


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PostPosted: Wed Jun 12, 2019 1:50 pm 
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Joined: Wed Jul 30, 2014 9:32 pm
Posts: 10569
I bet it's just a different encryption key.
I doubt someone is interested in reverse engineering it.


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PostPosted: Wed Jun 12, 2019 3:18 pm 

Joined: Tue Apr 16, 2019 9:55 pm
Posts: 4
Do you have a link out there that will help me start with the reverse engineering of this file?


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PostPosted: Wed Jun 12, 2019 7:49 pm 
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Joined: Wed Jul 30, 2014 9:32 pm
Posts: 10569
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.


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