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pepegaswiper69, posted Mon Dec 20, 2021 3:23 am (68382)

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I'm currently messing with an Android game Revived Witch.
Their data files are stored as a custom file system format `.nekodata`. Analysing these files in a hex editor, I figured out that each nekodata file contains the following data:
- `pixelneko filesystem` header at the start
- A lot of UnityFS bundles putting next to each other
- Some form of encrypted metadata at the end
So I tried to extract each UnityFS bundle from a nekodata file and put it in Asset Studio, but all of them faced the same error of "array dimensions exceeded supported range". Any idea why this may happen?

Files: https://drive.google.com/drive/folders/ ... sp=sharing
test.bundle is the first UnityFS file in characters.nekodata

Lico, posted Wed Dec 22, 2021 3:35 pm (68431)

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pepegaswiper69 wrote:

I'm currently messing with an Android game Revived Witch.
Their data files are stored as a custom file system format `.nekodata`. Analysing these files in a hex editor, I figured out that each nekodata file contains the following data:
- `pixelneko filesystem` header at the start
- A lot of UnityFS bundles putting next to each other
- Some form of encrypted metadata at the end
So I tried to extract each UnityFS bundle from a nekodata file and put it in Asset Studio, but all of them faced the same error of "array dimensions exceeded supported range". Any idea why this may happen?

Files: https://drive.google.com/drive/folders/ ... sp=sharing
test.bundle is the first UnityFS file in characters.nekodata

You can use my open sourced tool instead https://github.com/lico-n/unneko