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KusanagiRuiz, posted Wed Oct 23, 2019 7:31 pm (51703)

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Hi everyone, I have a problem at the moment when I open some files in Unity Asset Bundle Extractor.

There are two versions of the Game from which I want to open the files, Global and Japanese.

When I open these files of the global version I can see the images that it hides:



But when I open Japanese File I can't view the content:



Is there a way for decrypt?

Acewell, posted Thu Oct 24, 2019 2:20 am (51708)

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your Japanese sample has 2 UnityFS files which current tools won't detect.
you can split it by hand using a hex editor though.
copy the first 1334 bytes to new file and open with AssetStudio.
delete those same bytes from sample and save it then open that file with AssetStudio.

KusanagiRuiz, posted Thu Oct 24, 2019 8:55 am (51712)

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Acewell wrote:

your Japanese sample has 2 UnityFS files which current tools won't detect.
you can split it by hand using a hex editor though.
copy the first 1334 bytes to new file and open with AssetStudio.
delete those same bytes from sample and save it then open that file with AssetStudio.

I will try!

KusanagiRuiz, posted Fri Oct 25, 2019 10:56 am (51731)

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I tried what you told me, it worked, even for some files that have the same structure but obviously the number of bytes changes, there will be a script that deletes that first part until it detects the second "UnityFS '"

Acewell, posted Sun Dec 08, 2019 1:13 am (52452)

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yeah here is a bms script to automate splitting the files for you:

Code:

# script for QuickBMS http://aluigi.altervista.org/quickbms.htm

endian big
get FSIZE asize
get FOLDER basename
string FOLDER > 2
print "%FOLDER% :name"
idstring "UnityFS"
goto 0x0
savepos OFFSET
math i = 1
do
    goto 0x1e 0 seek_cur
    get SIZE long
    string NAME p "%s\%s" FOLDER i
    log NAME OFFSET SIZE
    math OFFSET   SIZE
    goto OFFSET
    math i   1
while OFFSET 

KusanagiRuiz, posted Sun Dec 08, 2019 6:31 am (52455)

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Acewell wrote:

yeah here is a bms script to automate splitting the files for you:

Code:

# script for QuickBMS http://aluigi.altervista.org/quickbms.htm

endian big
get FSIZE asize
get FOLDER basename
string FOLDER > 2
print "%FOLDER% :name"
idstring "UnityFS"
goto 0x0
savepos OFFSET
math i = 1
do
    goto 0x1e 0 seek_cur
    get SIZE long
    string NAME p "%s\%s" FOLDER i
    log NAME OFFSET SIZE
    math OFFSET   SIZE
    goto OFFSET
    math i   1
while OFFSET 

Thanks