Help with .bin and .exe file extraction

[G Utopia]

Hi,

Im currently working on the Kirigiri Sou tlp but I came to a dead end. It turned out that non method I could find will work. I guess thats because of the game's own nature.

Does someone know something I could maybe try?

To the outside file structure:

It only consists of an exe, few dll files, some .mov videos and a big .bin file.

I tried everything but somehow it doesnt work. 

I would be gratefull for every help.