What is executable memory?

In computer security, executable-space protection marks memory regions as non-executable, such that an attempt to execute machine code in these regions will cause an exception. It makes use of hardware features such as the NX bit (no-execute bit), or in some cases software emulation of those features.

What is non-executable memory?

Marking memory regions as non-executable means that code cannot be run from that region of memory, which makes it harder for the exploitation of buffer overruns. DEP prevents code from being run from data pages such as the default heap, stacks, and memory pools.

What is page memory in Linux?

More about pages Linux allocates memory to processes by dividing the physical memory into pages, and then mapping those physical pages to the virtual memory needed by a process. It does this in conjunction with the Memory Management Unit (MMU) in the CPU. Typically a page will represent 4KB of physical memory.

What are pages in memory management?

A page, memory page, or virtual page is a fixed-length contiguous block of virtual memory, described by a single entry in the page table. It is the smallest unit of data for memory management in a virtual memory operating system.

What program has executable code?

Executable code generally refers to machine language, which is the set of native instructions the computer carries out in hardware. Executable files in the DOS/Windows world use . EXE and . COM file extensions, while executable files in Mac, Linux and Unix do not require specific extensions.

How do I read an executable code?

Decompiling the code

1. Open dotPeek.
2. File -> Open -> navigate to your project -> select your .DLL/.exe file.
3. Your project will be listed in the projects on our dotPeek under Assembly Explorer.
4. Click your project and find the classes to view the source code.

What is object code and executable code?

The main difference between object code and executable code is that object code is a program or a file that is created after compiling the source code while executable code is a file or a program that indicates tasks according to encoded instructions the CPU can directly execute.