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nbbmcll1994, posted Sat Mar 20, 2021 3:20 pm (62949)

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Anyone can help me? I think they are unity files, however, the header is "PM03PM03FS" instead of "UnityFS".
game:https://dream.163.com/baidupzpc/

corruptturret, posted Sun Mar 21, 2021 8:47 am (62956)

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It's a bunch of renamed bundles packed together, an initial PM03 then a bunch of concatenated archives with UnityFS replaced with PM03FS (as far as I can tell. I don't know if anything else is different from the unity spec).
There's an xor key in the global-metadata.dat file for the manifests (u32 count, [?32, u32 offset, ?32] * count), I think 110 bytes at 0x29384 works.

I attached a program to split bundles up and rename the header. It depends on the manifests and global-metadata.dat. It's also easy to not use those. But I used them.

Code:

Fenghua.exe  [-o 
] -- 

net472.7z

nbbmcll1994, posted Wed Apr 14, 2021 10:23 am (63366)

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corruptturret wrote:

It's a bunch of renamed bundles packed together, an initial PM03 then a bunch of concatenated archives with UnityFS replaced with PM03FS (as far as I can tell. I don't know if anything else is different from the unity spec).
There's an xor key in the global-metadata.dat file for the manifests (u32 count, [?32, u32 offset, ?32] * count), I think 110 bytes at 0x29384 works.

I attached a program to split bundles up and rename the header. It depends on the manifests and global-metadata.dat. It's also easy to not use those. But I used them.

Code:

Fenghua.exe  [-o 
] -- 

Thanks for your help. Unfortunately, the splited files can not be opened with Asset Studio as well as UABE, so how to do with it?

yuehen, posted Tue Jan 04, 2022 9:29 am (68661)

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Here is the decryption tool, tested to decrypt all Asssetbundle.

DecryptionTool.rar