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Matherz
Newbie cheater
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Joined: 25 Aug 2012
Posts: 15
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 Posted: Mon Sep 03, 2012 11:56 am Post subject: [Help] Increase value (mov[...) |
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Hi,
In Cheat Engine tutorial step 7 was code like this when I auto assemble app with code injection.
| Code: |
....
newmem: //this is allocated memory, you have read,write,execute access
//place your code here
originalcode:
dec [rbx+00000760]
....
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So I easily finish TUT when I do this
| Code: | | add [rbx+00000760], 3 |
But in many apps there are code like this with move command and I don't know how add some value. Example:
| Code: |
newmem: //this is allocated memory, you have read,write,execute access
//place your code here
originalcode:
mov [ecx+00004214],eax
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I tried sone like add[ecx+00004214], 1 but with no success.
Sorry for ma eng and thax for help.
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Corruptor
Advanced Cheater
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Joined: 10 Aug 2011
Posts: 84
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| Posted: Tue Sep 04, 2012 7:57 am Post subject: |
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mov [x], eax means that he writes the value in eax (its a register, like a generally used variable) into the variable located at x. In your code, eax contains the value that will be written into your variable (maybe because more calculations then a simple add were applied to it), so you have to increase eax before he does so.
| Code: | newmem: //this is allocated memory, you have read,write,execute access
add eax, 3 //adds 3 to the value that will be written soon
originalcode:
mov [ecx+00004214],eax |
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Matherz
Newbie cheater
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Joined: 25 Aug 2012
Posts: 15
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| Posted: Tue Sep 04, 2012 12:28 pm Post subject: |
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| Ok dude I will try It I'am noobie in ASM and memory stuff. I read some tutorials but I'am still uncertain with some thing. Thanx lot of.
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Studio80
Advanced Cheater
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Joined: 12 Sep 2012
Posts: 83
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| Posted: Wed Sep 12, 2012 12:19 pm Post subject: |
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If you want to have a permanent value into a adress just use the MOV command.
| Code: | newmem: //this is allocated memory, you have read,write,execute access
//place your code here
originalcode:
mov [ecx+00004214],eax |
Stuff like that ^^ would be very easy. EAX holds the value of the pointer ecx+00004214. What you want to do is to write a new value which is EAX. So:
I'm just using 63 as a value example. But with this code the value will ALWAYS be 63.
About the CheatEngine tut:
| Code: | ....
newmem: //this is allocated memory, you have read,write,execute access
//place your code here
originalcode:
dec [rbx+00000760]
.... |
You can do the same, you have to write it a little bit different. You need to force the value into the pointer adress in this case. So:
| Code: | | MOV [rbx+00000760],63 |
I'm planning to make a very detailed Code Injection video tutorial, its not so hard as it looks. I hope this helped you out.
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