Is it possible to read application data in RAM?

Question

linux

Hello!

Is it possible to read application data in RAM?

For example, applications run and store data in RAM, and is it possible to hack the process and read data from RAM? Is it possible? I will not get this data from the code or from an HTTP request, but I will generate a random code via UUID4, for example, and store it in a variable, and the value will only be available inside the application, and is it possible to get the value of this variable from another process or application?

Answer 1

it all depends on the programming language and operating system.
some allow these tricks, some create obstacles.

Answer 2

here is a classic example of a program that does this: https://www.artmoney.ru/rus.htm

Answer 3

In order for a single process A to read process B's memory, modern operating systems require process A to be running with privileges.
Usually, programs for this build their drivers into the kernel (debuggers, all sorts of cheatengine / artmoney), etc.