CAR++ Android assets file (Unity 2018)

[rifky99]

App Name : CAR++
Package Name : com.cheyoujia.carplusplus
Unity Version : 2018.4.18f1

I already tried to open it with UABE and AssetStudio, and these progam can't reads it. Anyone can help me ?

The attachment is some file from data folder (not in .apk) located in Android/data/com.cheyoujia.carplusplus/files/temporary/

Thank you in advance for your help

[aluigi]

Those files with "FFFFFFFF11000000FFFFFFFF" in the names are just PNG images.
The big file looks encrypted so I don't have ideas.