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Small Injection Problem

 
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Betcha
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PostPosted: Sat Oct 15, 2016 5:37 am    Post subject: Small Injection Problem Reply with quote

Hello..

Target is in game time ... Day/Night
This is the line when do injection.

fstp dword ptr [eax]
mov eax,0DAB8D20


What writes/access to this address pops up only one thing.
So no other place to do injection, if only do back trace right?
But not about that..

Problem is that the fstp dword ptr [eax]
is surrounded with mov eax,0DAB8D20
If inject one line up will be like this

mov eax,0DAB8D20
fstp dword ptr [eax]


When make any changes on fstp dword ptr [eax]
it will basically kill the mov eax,0DAB8D20
And on script Deactivate time wont work properly.

How or is it possible to do an injection in this place without any harm on those
mov eax,0DAB8D20 ?
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Zanzer
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PostPosted: Sat Oct 15, 2016 6:24 am    Post subject: This post has 1 review(s) Reply with quote

Code:
[ENABLE]
aobscan(INJECT, D9 18 B8 ?? ?? ?? ?? {more bytes to make it unique})
label(code)
label(return)
label(saveme)
newmem:

code:
  fstp dword ptr [eax]
saveme:
  reassemble(INJECT+2)

registersymbol(INJECT)
registersymbol(saveme)
[DISABLE]
INJECT:
  db D9 18
  reassemble(saveme)
unregistersymbol(INJECT)
unregistersymbol(saveme)
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Betcha
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PostPosted: Sat Oct 15, 2016 9:34 am    Post subject: Reply with quote

Zanzer wrote:


Thank you! <3

But still one question:
When i rewrite script with command ''Reassemble''
By pressing ''OK'' it says error on line reassemble(save) below the [DISABLE]
If click yes and activate script it still works..
It must be like that or i miss something?
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Zanzer
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PostPosted: Sat Oct 15, 2016 1:37 pm    Post subject: Reply with quote

Well, my code was called "saveme". Just need to make sure it's the same label in the five places.
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Betcha
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PostPosted: Sat Oct 15, 2016 3:04 pm    Post subject: Reply with quote

After mixing script with ''reassemble'' i came up with this..
When press ok it see problem in ''reassemble(SaveThis)'',
But if press Yes anyways..
Script works without killing ''mov eax,0DAB8D20'' on Deactivate.
''reassemble'' command is new for me..
Crashed game few times before made something work with ''reassemble''. Very Happy
Code:
[ENABLE]

aobscan(Time,D9 18 B8 ?? ?? ?? ?? D9 00 B8)
alloc(ChangeTime,$100)
label(return)
label(SaveThis)

ChangeTime:
  fstp dword ptr [eax]
  mov [eax],(float)210.0
  jmp return

SaveThis:
  reassemble(Time+2)
  jmp return

Time:
  jmp ChangeTime
  nop
  nop
return:
registersymbol(Time)
registersymbol(SaveThis)

[DISABLE]

Time:
  db D9 18
  reassemble(SaveThis)
unregistersymbol(SaveThis)
unregistersymbol(Time)
dealloc(ChangeTime)
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