I found a way to get Arena Keys, but not at an effective rate.
It's a bit weird.. I apparently am visually picking up Blue wood in a battle instead of coins right now
So I guess I found a method for Item Injection...
Edit 3: Found a Flooz hack
Edit 4: And a Ban hammer haha.
Welp for those wanting to do it themselves in iGG or something...
Find the price to upgrade a cannon (I used the one that costs 100 wood 5 stone) Find the address for the wood with some nifty nearby scans and such.
Once found there is an itemID that will be located 0x30 above it, open up a hex calculator and the Item ID's vary by 0x350 in value each time.
The coin value is 13 positions behind the Wood Item ID so you have to subtract 13 * 0x350 from the item ID for wood that you found.
Scan for the coin ID value in the main loaded memory regions (It was 0x170000000-0x180000000 for me.)
Replace all of them with another value calculated by doing offsets like this.
Using wood as a position to multiply offsets:
-4 H: Chest Arena Key
-1 H: Large Xp Potion
44 H: Flooz 47 H: Battle Energy
Basically the game is no fun since they're actively watching for cheats even though a large part of the game is single player....