Address Inquiry

Okay so, lets say I have an integer. When I execute the program, that integer gets an address.

Makes sense.

But, there is many programs out there. Lets see, when creating any game hack, lets say minesweeper I find address of where that data stored and change it.

But... That hack, that simple hack which just changing some address... Works on every computer and every-time.

The question is,开发者_如何学Go that data is getting same address every-time. And on my computer, there is about 30 exe running now. Don't other programs want that address ? What If they want that address ? Why that hack works every-time ? Why other programs dont want that very same address ? How its working every-time ?

Every application gets it's own virtual addressing space (4GB on 32 bit machines) to overcome that problem in a multitasking operating system.

Here is a pretty good article covering the subject.

Your "hack" is probably locating a process using something like OpenProcess and editing the memory using WriteProcessMemory. That's why it works on "all" machines.

Basically, you need to read about virtual memory. The purpose of virtual memory is to abstract away the physical address space, and give each process (i.e. each application) its own "virtual" address space, which avoids the problem that you're describing.

If your minesweeper hack consists of manipulating data stored on a specified static address, there's no way it would work on every computer.. Program memory allocation is OS dependent.