Data Sections

Sections in an asm file are a way to organize a program. Sections have the following syntax:

section SECTION_NAME [data, code, readable, writable, executable]

The SECTION_NAME could be anything but by conventions it's usually .data, .bss and .text and .idata.

• .data sections includes initialized data.
• .bss sections include uninitialized (future) data.
• .text includes the code.
• .idata connects us to external modules (imports).

Portable Executable Format

When opening an executable with a hex viewer, we're able to see that the sections include information about different memory location references.