Just to let you guys know;
I played with CE and Bluestacks and here are my results (thanks to
Babybuuuo and wallance13)
Tried to edit all shop/in-game currency/power-ups etc.
Manage to find the addresses for them but when spending the quantity you don't have will give you "Failed to initialize.... Return to Main Menu" -ish popup and it automatically takes you back.
Conclusion:
-Gils, powerups, memories, crystals, rubies, weapon/materia enhancements, draw tickets, etc. = All Server-Sided (reverts back to your 'earned' amount)
-Able to edit HP of your characters to be invincible; WORKS however, it is not a single constant hash address it uses throughout the opening of your game app.
-Essentially Every Battle produces different hash so you will have to scan for your character HP every battle (there are 2 addresses for each character that is constant but editing them is pointless as it only reflects to the main address which changes every battle)
-Every game mode, every battle, you have to scan yourself which is a pain in the a&&.
That's all my findings for now...