This project demonstrates techniques used in binary manipulation, specifically targeting ELF (Executable and Linkable Format) executables. This tool encrypts the .text section of an ELF executable, injects a custom payload written in Assembly into a code cave, and modifies the entry point to execute the injected payload first. Upon execution, the payload will display a message, decrypt the .text section, and then execute the original program.

Introduction

The Malicious-Packer is a program written in C that showcases how to encrypt, inject, and manipulate ELF executables. The injected payload performs two main actions:

• Prints a custom message.
• Decrypts the .text section and transfers control to the original entry point of the executable.

Usage

1. Compile the project

   make

2. Run the packer on a target program (ELF executable binary)

   ./woody-woodpacker target_program

3. Run the infected program