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Stopping an Address from being written to
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ParkourPenguin
I post too much

Reputation: 146

Joined: 06 Jul 2014
Posts: 4495

Posted: Tue Oct 01, 2024 11:27 am Post subject:

The easiest thing is to set it to a constant value.

Code:

...
newmem:
cmp eax,008C775C
jne exit
mov ecx,(float)67.46270752
exit:
mov [eax+08],ecx
ret 0004
...

You could also change this so that it sets ecx to the value of a registered symbol so you can control it from the address list.

If you need the game to control it, that's going to be annoying. I don't think what you're trying will work- I'd guess the `fld` / `fsub` instructions that access that address probably indirectly affect the value being written to that same address in the `mov` instruction.

Perhaps one of those two instructions is used to render the view, while the other is used to update the value.
Try injecting code at `fld dword ptr [ecx+08]` instead (again, use either the full injection or the aobscan templates). The injected code will look something like this:

Code:

alloc(newmem,2048)
alloc(offsetVal,4)

label(exit)

registersymbol(offsetVal) // don't forget `unregistersymbol` in disable

offsetVal:
dd (float)30

newmem:
fld dword ptr [ecx+08]
cmp ecx,008C775C // this might not be necessary if the previous `fld` doesn't access any other addresses
jne exit
fadd dword ptr [offsetVal]
exit:
// other original code here
jmp return

...

(try only this- don't have other code injections active)

If that doesn't work, you could try the same thing on the `fsub` instruction, but instead of `fadd dword ptr [offsetVal]` you'd use `fsub dword ptr [offsetVal]` (because `a - ( b + c ) == a - b - c`)
_________________

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