How to extract sprites from Naruto Mobile?

[m61u31]

How to extract sprites from Naruto Mobile?
I found some files like this:

584242547.assetbundle

I tried tools like:


AssetStudio → can’t open
Disunity → “invalid signature” error
uTinyRipper → can’t read

Looks like they’re encrypted or use a custom format.
Has anyone managed to extract sprites or images from these?

Hello, you managed to extract the assets. I have the same problem as you. None of the extractors worked.