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how to multiply a value before adding operation?

 
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tdef
How do I cheat?
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Joined: 14 Sep 2024
Posts: 2
PostPosted: Sat Sep 14, 2024 6:41 am    Post subject: how to multiply a value before adding operation? Reply with quote
hello i'm trying to make something to increase the speed of how much a skill increases
after finding and editing values by hand with the usual search and compare addresses i found out that all skills have their value written into from this specific bit of code

Code:
add [rax],r12d


i know nothing of assembler but since according to debugger that r12d value seems to always be the amount of how much skill increases whenever it's called, i think that to make skills grow faster i just need to multiply that value before doing this operation, the question is how do i do it?
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Game Hacking Dojo
Master Cheater
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Joined: 17 Sep 2023
Posts: 250
PostPosted: Sat Sep 14, 2024 9:35 am    Post subject: Reply with quote
You can change the operands

Code:
push rdx
push rbx
push rax

mov eax, 1         //operand 1
mov edx,r12d      //operand 2
mul edx
mov rbx,rax

pop rax
mov [rax],rbx
pop rbx
pop rdx
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tdef
How do I cheat?
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Joined: 14 Sep 2024
Posts: 2
PostPosted: Sat Sep 14, 2024 11:06 am    Post subject: Reply with quote
how do i do that? i see how to change that specific line but how do i add multiple ones?
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ParkourPenguin
I post too much
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Joined: 06 Jul 2014
Posts: 4718
PostPosted: Sat Sep 14, 2024 11:09 am    Post subject: Reply with quote
Use code injection. See the CE tutorial. There are plenty of walkthroughs if you're having trouble.

Alternative using floating point arithmetic:
Code:
alloc(newmem,2048)
alloc(skillMultiplier,8)

skillMultiplier:
  dq (double)2

newmem:
  cvtsi2sd xmm0,r12d
  mulsd xmm0,[skillMultiplier]
  cvttsd2si r12d,xmm0
// original code
  add [rax],r12d
  jmp return

...

registersymbol(skillMultiplier)
`registerSymbol` is so you can add that address to the address list and change it dynamically at runtime. (no need to disable the script, edit it, then reenable it)
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