.texb/.imag file help? (love live! school idol festival, ios)

[umisonoda]

okay so i've been wanting to rip some renders/sprites from love live! school idol festival. i'm kind of new to ripping files but i've ripped from other apps before, but the files in llsif are all .texb and .imag files (from what i've seen the image data is in the .texb files) i have no clue where the ones i want are (the girls from the in-game cards without the card background) but i can probably find them. does anyone know how i could work with the files to get the full images? i don't care if it's hard, i'm fine with a challenge.

[Daxar]

Looks like the format is described here, it shouldn't be too terribly hard to make a program for extracting the images, though it's worth a check around to see if some such program exists already.

EDIT: This folder's KLBToolHost.exe looks promising as far as tools go, but I can't test for myself. If the program doesn't work or you want me to look at the .texb files myself, I'd be happy to.

[umisonoda]

Looks like the format is described here, it shouldn't be too terribly hard to make a program for extracting the images, though it's worth a check around to see if some such program exists already.

EDIT: This folder's KLBToolHost.exe looks promising as far as tools go, but I can't test for myself. If the program doesn't work or you want me to look at the .texb files myself, I'd be happy to.

i tried that one out and it said it didn't support those files. hm.
i'm not exactly sure how to make a program for extracting images, but if it's not too hard to do i can definitely try.
anyway, here's a folder ripped from the game if you want to check them out yourself. 

edit: i did some research and apparently the images are encrypted. i think you have to know javascript to get them out? i'm not sure though