Cheat Engine

[DjSt3rios]

Hello to everyone! I started making an anti-cheat software for a game server I am going to open soon. I am new to C++ though, but I have done some good progress I think. My problem is, I made a new thread in my application, to read a value from the game's memory. My problem is, after the ReadProcessMemory function runs, it screws up some of my variables. For instance I have two global variables declared:

[Dark Byte]

Are those two variables declared inside an union by any chance?

[DjSt3rios]

I am not really sure what this is, but by googling, no. I just declared them on the top of the program and that's all. Its a pretty small application. Now on some forums some people told me that maybe the variable cannot hold the data or something like that, i will make some tests and see how it turns out.

[atom0s]

Mind posting all the code, looks like one of your functions is overflowing into other variable space.

[DjSt3rios]

[atom0s]

Yeah whole thing is fine.

[DjSt3rios]

Okay, it's kinda a mess, since this is my first application, I actually thought I would fail so first I tried to make it work, so variable names etc might be messy, but you can get a general idea of my knowledge etc.

EDIT: Code removed

[atom0s]

If anything I'd say its probably your ReadProcessMemoryString function doing it.

[DjSt3rios]

Hmmm I don't really think so. When I was debugging my program, It was only checking key, and I never received the message to send the username, that basicly means the ReadProcessMemoryString does not run at all, yet it happens.. What should I do? Do you have any advise to give me?

[atom0s]

[atom0s]

Some other possibilities:

Inside CheckInbox, you have:

[DjSt3rios]

Hmmm, Altough these codes does not run for now, cheat engine could actually help me as you said, I will try it, although I am not sure how to proceed, but I will try it and post here! One question, Do you know if there is any program for easier/better debugging? Dev-CPP is pretty okay, but a bit weird/buggy with its debugging system.

EDIT: Hmm so, I did what you said, It seems like there is a function that writes in it, 570 times so far, and another one like 70 times. Is there any way I can find more details from that? Although that pretty much gave me an idea, the CheckKey function must be doing something, I will try to do it again but I will increase the timer, to see ifi t changes more slowly.

EDIT2: Yes CheckKey is for sure one of the problems, I tried to make it run every 100 MS and the count number increased a lot. I guess the playerkey variable which is global, when ReadProcessMemory writes in it, it also writes in Process's ID variable, but I can't understand why...

[atom0s]

[DjSt3rios]

Hmm true, but I remember when I used playerkey[10]; it was even more buggy, I don't remember exactly. Now I should tell you, I made a new project on Visual Studio 2010, and with some modifications I was able to build the project successfully, however when I try to run the application, it just doesn''t work... its icon and size looks fine, but for some reason it doesn't run... maybe I will try it on Visual Studio 2012... Thanks a lot mate, Your help is really appriciated

Edit2: I managed to fix the issue with the application closing, but the thing is, now when I set a few breakpoints just like I did in Dev C++, when the code is about to run, I get blue screen of death. I tried it twice, both times BSOD, and I almost never get BSOD. I will make a test again without debugging, to see if the problem still exists, and maybe search for some tools or something to help fix the memory corruption

Edit3: I run the program without debugging, and seems like the memory corruption does not happen anymore... at least for now. I will see how it goes. As you said, the Dev C++ is using an old compiler, that could be the problem.

[atom0s]