[TippeX]

i dont do requests, and i also do not have to prove myself.. been there, done that

if you push / pop a register then yes, it will be preserved, thats the whole poinf of the opcode, when coding especially at asm level, the register preservation (and in some cases) flags are for YOU to maintain... most api's will definately destroy eax, ecx and edx.. ebx is usually used within windows messaging and within callback procedures..

fundamental flaws in the code would be your looping
inc eax, could lead you well out of the memory boundaries that would be my only cricicism.. but in trainers, especially with what you're doing its important to preserve / set the flags
take for example your little bit of code, see the sub at the end, thats going to effect the flags and could well screw the game up, as it might branch when it shouldnt etc.. thats where the difference between good code and bad code comes in.... stack balancing + register preservation, is very important