Common Binary File Formats
Explore the structure of popular executable file formats such as ELF, PE, and Mach-O, and their key sections.
What are Binary Formats?
When you compile a program, it becomes a binary file. This isn't just a random collection of bytes! It's structured in a specific way, following a binary file format.
These formats are like blueprints. They tell the operating system (OS) how to load, link, and execute the program correctly. Understanding them is crucial for reverse engineering.
Why File Formats are Key
Binary formats define where different parts of a program live: the actual executable code, initialized data, read-only data, resources, and more.
As a reverse engineer, knowing the file format allows you to navigate the binary, locate functions, extract strings, and identify important data structures within the file.
All lessons in this course
- CPU Architectures Overview
- Data Representation in Binaries
- Common Binary File Formats
- Endianness & Byte Ordering