Cheat Engine

lamafao · Posted: Thu Mar 20, 2014 2:13 pm Post subject: fstp & fld

Could someone explain to me what these do, and how or what could i add/modify so that i can change the values they have/send?
fld loads a float value from some magical place and sends it to eax+10?

fstp dword ptr [ecx+10]
fld dword ptr [eax+10]

STN · Posted: Thu Mar 20, 2014 3:11 pm Post subject:

fld loads the value from eax+10

fstp pops the fpu stack and writes the popped value into [ecx+10]

the difference between fld and fstp is basically putting and popping values off the fpu stack. FLD puts new value into stack while fstp pops the value and writes into destination.

what are you trying to do ? if you are trying to the change the value of [ecx+10] do this

fstp dword ptr [ecx+10]
fld [memlocationwithdesiredvalue]
fstp dword ptr [ecx+10]

will load the value from memlocationwithdesiredvalue and write to [ecx+10] .

If you are trying to write to [eax+10], just write a simple mov instruction like
mov [eax+10], somevalue
fld dword ptr [eax+10]

not sure what you are trying to do though

lamafao · Posted: Thu Mar 20, 2014 5:27 pm Post subject:

How do i get memlocation, i mean can i create my own? if so how? I guess i could just do something in newmem?

Nemexia55 · Posted: Sat Dec 20, 2014 12:05 pm Post subject:

STN, Can you please say how you know all these?
i mean where did you learn these?

zm0d · Posted: Sat Dec 20, 2014 12:14 pm Post subject:

Just look at a reference. E.G. http://ref.x86asm.net/coder32.html

Nemexia55 · Posted: Sat Dec 20, 2014 12:43 pm Post subject:

OMG this site is awesome thanks!!! Smile

zm0d · Posted: Sat Dec 20, 2014 2:01 pm Post subject:

You're welcome.. Smile

Also this site has some good explanations to the most used ASM opcodes:
http://www.cs.virginia.edu/~evans/cs216/guides/x86.html

Nemexia55 · Posted: Sat Dec 20, 2014 2:04 pm Post subject:

thanks, and do you know such webpages for LUA?
i think lua is harder than AA Sad

zm0d · Posted: Sat Dec 20, 2014 2:15 pm Post subject:

Nope, sorry. I don't use LUA :/

Nemexia55 · Posted: Sat Dec 20, 2014 2:16 pm Post subject:

thank you anyway.