Packet Sender

Layer 2 packet constructor and sender using Python

Table of Contents

• Environment
• Used Library
• Run Directly
• Build Executable
• Folder Structure
• API Reference
• Program Usage

Environment

• Ubuntu Desktop 20.04 with linux kernel 5.4.0-58-generic
• Python 3.8.5

Used Library

• builtin socket library
• netifaces: get local IP and MAC address
• PySide2: official python library of Qt

Run Directly

1. Install requirements inside a virtual environment

nick@nick:~/packet-sender$ sudo pip3 install virtualenv
nick@nick:~/packet-sender$ virtualenv venv
nick@nick:~/packet-sender$ source ./venv/bin/activate
(venv) nick@nick:~/packet-sender$ pip3 install PySide2 netifaces
(venv) nick@nick:~/packet-sender$ deactivate

2. Run ./main.py with sudo using ./venv/bin/python3: sudo ./venv/bin/python3 ./main.py

Build Executable

Don't do this since it'll create a 131MB executable, which is kinda ridiculous.

1. Install pyinstaller: sudo pip3 install pyinstaller
2. Run pyinstall --onefile ./main.py
3. Run ./main with sudo: sudo ./main

Folder Structure

• ./main.py: Program entrance
• ./ICMPexample.py: Example of library usage
• ./lib: Self-defined libraries
  • ./lib/packet.py: Packet factory classes of different protocols
  • ./lib/helper.py: Packet unpack class, constants, helper functions
• ./views: Qt frontend
  • ./views/*.py: Views of different protocols
  • ./views/widgets/info.*.py: Visualization of unpacked data

API Reference

See ./docs/api for library usage

Program Usage

See ./docs/program for program usage