Unreal Engine 4 pak-file Unpacker / unreal_tournament_4.bms [UE4 global topic]

Extraction and unpacking of game archives and compression, encryption, obfuscation, decoding of unknown files
aluigi
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Re: Unreal Engine 4 pak-file Unpacker

Post by aluigi »

uasset is stuff for Gildor's umodel: http://www.gildor.org/en/projects/umodel
aluigi
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Re: Unreal Engine 4 pak-file Unpacker

Post by aluigi »

Script 0.4.5 with the key for Gal*Gun VR
Ehnoah
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Re: Unreal Engine 4 pak-file Unpacker

Post by Ehnoah »

aluigi wrote:uasset is stuff for Gildor's umodel: http://www.gildor.org/en/projects/umodel


His tool can just view Models / Textures. I am more interested to Modify the UI of that game, so it would require me to extract uasset or at least modify it some way. I think Umodel cant do that. At least I didnt find out .

With -export you cant extract Functions etc.
Avatarchik
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Re: Unreal Engine 4 pak-file Unpacker

Post by Avatarchik »

Hi!Who can help find the aes key for playerunknown's battlegrounds?
aluigi
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Re: Unreal Engine 4 pak-file Unpacker

Post by aluigi »

Can you upload the big game executable?
Avatarchik
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Re: Unreal Engine 4 pak-file Unpacker

Post by Avatarchik »

aluigi wrote:Can you upload the big game executable?

Hi! https://cloud.mail.ru/public/DiXA/dH58xfbrF
file TslGame.exe
aluigi
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Re: Unreal Engine 4 pak-file Unpacker

Post by aluigi »

Are you sure that the archives are really encrypted?
Use http://aluigi.org/bms/filecutter.bms with a MEGABYTES variable set to 10 instead of 2 (open the script with a text editor), run the script on the big pak archive and upload the 2 files generated by it
Avatarchik
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Re: Unreal Engine 4 pak-file Unpacker

Post by Avatarchik »

There are only 87 files protected
umodel - > https://monosnap.com/file/gobcrng5C72xx ... HUD4B0JzIK
hELLBLADE
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Re: Unreal Engine 4 pak-file Unpacker

Post by hELLBLADE »

Hello again, thank for reply.

So aain i test twinmotion 2018 , as you might now it uses UE core and it has such huge library of materials and models.
so i unpacked the pak file of gb, but when i opened it inside UE 4.16.2 and it just crash, i think the pak was cooked using older version v 4.15.1.
So does it really work if i try to open the library using 4.15.1 ?
aluigi
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Re: Unreal Engine 4 pak-file Unpacker

Post by aluigi »

@Avatarchik
Unfortunately I need files, not an useless image.
Use the unreal script script for Quickbms on the pak archive, after many files it will ask you to insert a key for the encrypted files, just press RETURN and then upload the encrypted files it extracted (they are probably all the ini files containing garbage data in them)
Avatarchik
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Re: Unreal Engine 4 pak-file Unpacker

Post by Avatarchik »

aluigi wrote:@Avatarchik
Unfortunately I need files, not an useless image.
Use the unreal script script for Quickbms on the pak archive, after many files it will ask you to insert a key for the encrypted files, just press RETURN and then upload the encrypted files it extracted (they are probably all the ini files containing garbage data in them)

Hi! Here I poured out the .pak file and files that I gave to the file cutter https://cloud.mail.ru/public/DiXA/dH58xfbrF
aluigi
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Re: Unreal Engine 4 pak-file Unpacker

Post by aluigi »

It's a fake encryption just like the one that was used in Lineage 2.
When you use my script press RETURN (no key) when it asks for the password.
zhuang
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Re: Unreal Engine 4 pak-file Unpacker

Post by zhuang »

Great!

How to unrack this pak?
First thank you!
aluigi
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Re: Unreal Engine 4 pak-file Unpacker

Post by aluigi »

@zhuang
Name of the game?
You must also upload the big game executable because the files are encrypted.
TaylorMouse
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Re: Unreal Engine 4 pak-file Unpacker

Post by TaylorMouse »

Anyone tried this on Fortnite?

T.
ahmadabubaker
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Re: Unreal Engine 4 pak-file Unpacker

Post by ahmadabubaker »

Hello,

I am a little lost to the location of the unpacked files. I just unpacked a .pak but the at the end of the process the software did not prompt me to open the unpacked file folder nor were there any way of finding the location of the unpacked files. The files were definitely unpacked as is reflected by my hardware size change. How do i find out the folder for the unpacked files.

Thanks.
MerlinSVK
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Re: Unreal Engine 4 pak-file Unpacker

Post by MerlinSVK »

They are unpacked into the root folder of the game. So it is not one folder, but many.
Nobody
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Re: Unreal Engine 4 pak-file Unpacker

Post by Nobody »

. can you update the script to unpak .pak of Friday The 13th? thanks
godskin
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Re: Unreal Engine 4 pak-file Unpacker

Post by godskin »

Nobody wrote:. can you update the script to unpak .pak of Friday The 13th? thanks


use umodel
lol

Image
aluigi
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Re: Unreal Engine 4 pak-file Unpacker

Post by aluigi »

@Nobody
Do you mean that my script http://aluigi.org/papers/bms/others/unr ... ment_4.bms version 0.4.7 doesn't work? I doubt.