Unsupported asset bundle type (most likely unity 2.6)

[biplexive]

Hi, I've been trying to extract assets from some asset bundles with DisUnity that were created by a custom version of unity: 2.5.5b4. This version of the editor is, unfortunately, not public. When I run bundle-extract, all I get is a file usually named something like "CustomAssetBundle-X-Y".

I approached the author of QuickBMS for help, and he managed to extract the files (sort of) but they seem to be unusable and he recommended I contact the developer of Disunity instead. His comments were "The format of these bundles are very similar to the previous one and in the script it's enough to search the "0xe" keyword to spot the differences and update the script to support these files. It's quite easy for the disunity developer in my opinion.".

Here is a sample of the bundles: https://www.mediafire.com/?cct8539ch9gcell

Also here is the custom (2.x.x) web player the game used that you may already have from Kris's thread: https://www.mediafire.com/?obiely35pshnpmc

Hope you can help me out, or at least point me in the right direction. Thanks.

[ata4]

Hi, sorry for the delay. These files use 7 as the file format version, but it looks like the format is closer to 6 than 7. I guess it originally used 6 and the format was customized a bit and the number was incremented to 7, which is incompatible to the official Unity file format 7. This could be the reason why most programs can't read these files properly.

With some modifications of the code, I'm currently able to read the header and type tree correctly, but the object info list is somewhat strange... I'll message back once I figured out the format.

[biplexive]

Sounds good, thank you.

[kris689]

Hi, I am also still trying to figure this out, we have the same problem.. please update soon :)