How to extract game files from Android .obb files (for Order and Chaos Duels)?

I have a general question and hope to get some feedback. I love the game Order and Chaos Duels and wanted to ask if any of you have ever managed to unzip the .obb file so that you can read the image files and language-specific explanatory text of the cards in a standard format? I see that there is a fandom page here with all the cards shown. Does anyone know how to get the source files so you can create such a page? I have found the .obb file on the android device, but I have been unsuccessful in unzipping the file. Or is there another way to get the card source files (images, texts, maybe effects)? Can anyone help me here?