Network

Scapy: send, sniff and dissect and forge network packets. Usable interactively or as a library

pypcap, Pcapy and pylibpcap: several different Python bindings for libpcap

libdnet: low-level networking routines, including interface lookup and Ethernet frame transmission

dpkt: fast, simple packet creation/parsing, with definitions for the basic TCP/IP protocols

Impacket: craft and decode network packets. Includes support for higher-level protocols such as NMB and SMB

pynids: libnids wrapper offering sniffing, IP defragmentation, TCP stream reassembly and port scan detection

Dirtbags py-pcap: read pcap files without libpcap

flowgrep: grep through packet payloads using regular expressions

Knock Subdomain Scan, enumerate subdomains on a target domain through a wordlist

Mallory, extensible TCP/UDP man-in-the-middle proxy, supports modifying non-standard protocols on the fly

Pytbull: flexible IDS/IPS testing framework (shipped with more than 300 tests)

Debugging and reverse engineering

Paimei: reverse engineering framework, includes PyDBG, PIDA, pGRAPH

Immunity Debugger: scriptable GUI and command line debugger

mona.py: PyCommand for Immunity Debugger that replaces and improves on pvefindaddr

IDAPython: IDA Pro plugin that integrates the Python programming language, allowing scripts to run in IDA Pro

PyEMU: fully scriptable IA-32 emulator, useful for malware analysis

pefile: read and work with Portable Executable (aka PE) files

pydasm: Python interface to the libdasm x86 disassembling library

PyDbgEng: Python wrapper for the Microsoft Windows Debugging Engine

uhooker: intercept calls to API calls inside DLLs, and also arbitrary addresses within the executable file in memory

diStorm: disassembler library for AMD64, licensed under the BSD license

python-ptrace: debugger using ptrace (Linux, BSD and Darwin system call to trace processes) written in Python

vdb / vtrace: vtrace is a cross-platform process debugging API implemented in python, and vdb is a debugger which uses it

Androguard: reverse engineering and analysis of Android applications

Fuzzing

Sulley: fuzzer development and fuzz testing framework consisting of multiple extensible components

Peach Fuzzing Platform: extensible fuzzing framework for generation and mutation based fuzzing (v2 was written in Python)

antiparser: fuzz testing and fault injection API

TAOF, (The Art of Fuzzing) including ProxyFuzz, a man-in-the-middle non-deterministic network fuzzer

untidy: general purpose XML fuzzer

Powerfuzzer: highly automated and fully customizable web fuzzer (HTTP protocol based application fuzzer)

SMUDGE

Mistress: probe file formats on the fly and protocols with malformed data, based on pre-defined patterns

Fuzzbox: multi-codec media fuzzer

Forensic Fuzzing Tools: generate fuzzed files, fuzzed file systems, and file systems containing fuzzed files in order to test the robustness of forensics tools and examination systems

Windows IPC Fuzzing Tools: tools used to fuzz applications that use Windows Interprocess Communication mechanisms

WSBang: perform automated security testing of SOAP based web services

Construct: library for parsing and building of data structures (binary or textual). Define your data structures in a declarative manner

fuzzer.py (feliam): simple fuzzer by Felipe Andres Manzano

Fusil: Python library used to write fuzzing programs

Web

Requests: elegant and simple HTTP library, built for human beings

HTTPie: human-friendly cURL-like command line HTTP client

ProxMon: processes proxy logs and reports discovered issues

WSMap: find web service endpoints and discovery files

Twill: browse the Web from a command-line interface. Supports automated Web testing

Ghost.py: webkit web client written in Python

Windmill: web testing tool designed to let you painlessly automate and debug your web application

FunkLoad: functional and load web tester

spynner: Programmatic web browsing module for Python with Javascript/AJAX support

python-spidermonkey: bridge to the Mozilla SpiderMonkey JavaScript engine; allows for the evaluation and calling of Javascript scripts and functions

mitmproxy: SSL-capable, intercepting HTTP proxy. Console interface allows traffic flows to be inspected and edited on the fly

pathod / pathoc: pathological daemon/client for tormenting HTTP clients and servers

Forensics

Volatility: extract digital artifacts from volatile memory (RAM) samples

LibForensics: library for developing digital forensics applications

TrIDLib, identify file types from their binary signatures. Now includes Python binding

aft: Android forensic toolkit

Malware analysis

pyew: command line hexadecimal editor and disassembler, mainly to analyze malware

Exefilter: filter file formats in e-mails, web pages or files. Detects many common file formats and can remove active content

pyClamAV: add virus detection capabilities to your Python software

jsunpack-n, generic JavaScript unpacker: emulates browser functionality to detect exploits that target browser and browser plug-in vulnerabilities

yara-python: identify and classify malware samples

phoneyc: pure Python honeyclient implementation

PDF

Didier Stevens' PDF tools: analyse, identify and create PDF files (includes PDFiD, pdf-parser and make-pdf and mPDF)

Opaf: Open PDF Analysis Framework. Converts PDF to an XML tree that can be analyzed and modified.

Origapy: Python wrapper for the Origami Ruby module which sanitizes PDF files

pyPDF: pure Python PDF toolkit: extract info, spilt, merge, crop, encrypt, decrypt...

PDFMiner: extract text from PDF files

python-poppler-qt4: Python binding for the Poppler PDF library, including Qt4 support

Misc

InlineEgg: toolbox of classes for writing small assembly programs in Python

Exomind: framework for building decorated graphs and developing open-source intelligence modules and ideas, centered on social network services, search engines and instant messaging

RevHosts: enumerate virtual hosts for a given IP address

simplejson: JSON encoder/decoder, e.g. to use Google's AJAX API

PyMangle: command line tool and a python library used to create word lists for use with other penetration testing tools

Hachoir: view and edit a binary stream field by field

py-mangle: command line tool and a python library used to create word lists for use with other penetration testing tools

Other useful libraries and tools

IPython: enhanced interactive Python shell with many features for object introspection, system shell access, and its own special command system

Beautiful Soup: HTML parser optimized for screen-scraping

matplotlib: make 2D plots of arrays

Mayavi: 3D scientific data visualization and plotting

RTGraph3D: create dynamic graphs in 3D

Twisted: event-driven networking engine

Suds: lightweight SOAP client for consuming Web Services

M2Crypto: most complete OpenSSL wrapper

NetworkX: graph library (edges, nodes)

Pandas: library providing high-performance, easy-to-use data structures and data analysis tools

pyparsing: general parsing module

lxml: most feature-rich and easy-to-use library for working with XML and HTML in the Python language

Whoosh: fast, featureful full-text indexing and searching library implemented in pure Python

Pexpect: control and automate other programs, similar to Don Libes `Expect` system

Sikuli, visual technology to search and automate GUIs using screenshots. Scriptable in Jython

PyQt and PySide: Python bindings for the Qt application framework and GUI library





If you are involved in vulnerability research, reverse engineering or penetration testing, I suggest to try out the Python programming language. It has a rich set of useful libraries and programs. This page lists some of them.Most of the listed tools are written in Python, others are just Python bindings for existing C libraries, i.e. they make those libraries easily usable from Python programs.