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Simple Buffer Overflow Exploit Payload Example

Disclaimer: This code is a basic example intended for educational purposes only. Real-world security practices and exploitation techniques can be much more complex. Always use your knowledge responsibly and only on systems for which you have explicit permission.

Overview

This Python script demonstrates a simple buffer overflow exploit payload construction. It is meant to illustrate the concept of constructing and sending an exploit payload to a target system. The code allows you to customize the payload to suit your needs for experimentation and learning.

Prerequisites

  • Python 3.x
  • Knowledge of buffer overflow concepts and memory management (for educational purposes)
  • A target system for experimentation (make sure you have appropriate permissions)

Usage

  1. Customize the following variables in the code according to your needs:

    • NOP_PADDING_NB: Adjust the number of NOP (No-Operation) bytes for padding if needed.
    • OFFSET_NB: Find the offset where the program breaks (you can find it using tools like msf_pattern and dynamic debugging tools).
    • TARGET_IP: Set the target IP address where the exploit payload will be sent.
    • TARGET_PORT: Set the target port where the exploit payload will be sent.
    • esp_addr: Set the address of the return function. Ensure it is written in reverse if the target system is little-endian.
    • buf: Input your encoded exploit payload (e.g., generated using msfvenom).

  2. Run the script with the following command:

    python3 bof.py