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Misteraaargh
Newbie cheater
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Joined: 20 Dec 2012
Posts: 14
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 Posted: Sun Apr 07, 2013 10:33 pm Post subject: [Q] Reading an address and writing its value to another (?) |
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Hi,
I have two memory addresses of a game ( Permanent pointers to both). What I want to do is to be able to make a script or something that -
1. Reads from address A
2. Does a simple arithmetic operation on the value A
3. Overwrites the value at address B with the result of arithmetic operation.
The idea is to be able to tie A and B together. 'something' read constantly from address A ( + arithematic on A) and keeps writing the value to address B. In case you should know it, A is the location of an object, and B is one of the pre-provided sliders relating to game-physics.
I have no prior programming experience, apart from writing hello world in at least ten languages  . I have basically two questions and would like them to be answered separately.
A) Is there any easy way to achieve this in cheat engine itself?
B) Are there certain languages that are more suited to memory manipulation than others? If yes, then what language would you suggest to a newbie to be able to start making simple scripts to read and write memory as quickly and easily as possible?
I may come up with ingenious ways to do it. As an example of ingenious - I once found a value for Z acceleration. I couldn't reach the actual gravity value for it after trying hard . So I set up -0.1 with a hotkey to Z-accel in CE. Then I downloaded an auto-key-clicker. And I set it to clicking the hotkey again and again. This resulted in creating a high gravity situation.
Though I love these kinds of problem solving ways, I would like to have your advice so that I do not have to create my own methods everytime to do simple memory manipulations..
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Mohsen
Advanced Cheater
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Joined: 04 Apr 2013
Posts: 69
Location: PE
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| Posted: Mon Apr 08, 2013 1:58 am Post subject: |
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A. If this is a AA code then no, otherwise you can read and write memory with cheat engine built in functions.
B. No
I assume the first address is 0xABC and the second 0xDEF
AA code:
Symbol mt is your calculated math with LUA.
| Code: |
push eax
push ebx
mov ebx, [mt]
mov eax, 0xDEF
mov [eax], ebx
pop ebx
pop eax
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Cheat engine functions :
| Code: |
readBytes
writeBytes
readInteger
writeInteger
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>> wiki.cheatengine.org/index.php?title=Lua
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Gniarf
Grandmaster Cheater Supreme
![]() Reputation: 43
Joined: 12 Mar 2012
Posts: 1285
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| Posted: Mon Apr 08, 2013 2:02 am Post subject: Re: [Q] Reading an address and writing its value to another |
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| Misteraaargh wrote: | | A) Is there any easy way to achieve this in cheat engine itself? |
Yes, for example the following lua script:
| Code: | addressA=0x20000;
addressB=0x20004;
if (MyTimer~=nil) then
object_destroy(MyTimer);
MyTimer=nil;
end
MyTimer = createTimer(nil,false)
timer_setInterval(MyTimer, 1000) --1000ms refresh time between calls of DoMyStuff
timer_onTimer(MyTimer, DoMyStuff)
function DoMyStuff(sender) --function that is executed every 1000ms
local VariableA=readInteger(addressA)
VariableA=VariableA+1; --do your maths here...
writeInteger(0x20004,addressB);
end
if (TimerHotkey~=nil) then
object_destroy(TimerHotkey);
TimerHotkey=nil;
end
TimerHotkey=createHotkey(ToggleTimer, VK_F2); --when pressing F2 execute ToggleTimer
function ToggleTimer()
if (MyTimer~=nil) then
if (timer_getEnabled(MyTimer)) then
timer_setEnabled(MyTimer, false)
else
timer_setEnabled(MyTimer, true)
end
end
end |
Paste it in table->show table lua script, edit addressA & addressB, press execute, the press F2. Now every second the value at addressB will be equal to the one at addressA, incremented by 1.
That the simplest way to do your hack, but if you need addressB to be updated more often than every ~10ms, you'll have to use an injected auto assembler script instead.
| Misteraaargh wrote: | | B) Are there certain languages that are more suited to memory manipulation than others?. |
Yes, x86 assembly when hacking, and C/C++ when making your programs. So is my opinion at least.
| Misteraaargh wrote: | | If yes, then what language would you suggest to a newbie to be able to start making simple scripts to read and write memory as quickly and easily as possible? |
To a newbie, err...Well you WILL need assembly for any non-trivial hack, so try to learn that one, but at your pace since it's not a friendly language.
Lua, the language used in the script above is NOT meant for memory manipulation. Lua is mean to manipulate functions of an engine, be it a game engine or a cheat engine. And cheat engine is meant to manipulate memory...
I'm repeating myself, but consider that lua is a way to automate a lot of clicks in cheat engine, most of the time it's not vital/very useful for hacking.
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jucce
Advanced Cheater
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Joined: 02 Apr 2013
Posts: 99
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| Posted: Mon Apr 08, 2013 2:15 pm Post subject: Re: [Q] Reading an address and writing its value to another |
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| Misteraaargh wrote: |
B) Are there certain languages that are more suited to memory manipulation than others? If yes, then what language would you suggest to a newbie to be able to start making simple scripts to read and write memory as quickly and easily as possible? |
I would suggest a language you already know fairly well. Personally I went with C# when I made a simple trainer previously. The reasons were that I knew the language since before, creating GUIs is relatively simple and there already exists classes for modifying memory that other people have made.
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