In the original game you could press B I and G to give yourself full health, this no longer seems to work.

I've just tried hacking the exe with a memory address scanner and found two memory address for Kashes and Health. 08EB5DEC, setting a new value for this sets the amount of Kashes in Twinsens inventory. 08A3251C, changing values for this gave me more or less health and I guess infinite health by freezing it.

Unfortunately my poking aorund in the games memory caused it to crash just I discovered the memory address for health but when I restarted those memory addresses no longer work.

The game must use a different address each time because changing the values of those addresses now no longer work. Maybe this is why there as never been a trainer made for it?

You can use a Save Editor to give you full health and money.

LBA Trainer: https://forum.magicball.net/showthread.php?p=458695#post458695 - it allows you to hack money, health, and other things too in real time