Final Fantasy VI Modding

[en.wikipedia.org]

So, Final Fantasy VI released on Steam today! I decided it might be worth looking into doing character sprite replacement in this release since it's already been done for the PC version of V. In this game, characters typically use the same sprite sheet throughout the entire game, so I figured it might not be as daunting a task as V which would require every character/job combination to be replaced.Anyway, much to my dismay it appears that unlike V, VI was released using the Android version as it's base. As such, the majority of the data is stored and encrypted using an Opaque Binary Blob file (main.obb).I've attempted decompiling this file using the Android SDK jobb utility, but it's throwing errors because the secret key (password used for encryption) is not correct.I'm wondering if anyone else has had any luck with this or perhaps someone with more Android experience could shed some light on whether or not it's even possible to decompile/recompile this container.