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
- httplib2: comprehensive HTTP client library that supports many features left out of other HTTP libraries
Debugging and reverse engineering
- Paimei: reverse engineering framework, includes PyDBG, PIDA, pGRAPH
- Immunity Debugger: scriptable GUI and command line debugger
- 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
- diStorm64: 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
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
- antiparser: fuzz testing and fault injection API
- TAOF, 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)
- FileP: file fuzzer. Generates mutated files from a list of source files and feeds them to an external program in batches
- 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 anzano
Web
- 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
- Windmill: web testing tool designed to let you painlessly automate and debug your web application
- FunkLoad: functional and load web tester
Forensics
- Volatility: extract digital artifacts from volatile memory (RAM) samples
- SandMan: read the hibernation file, regardless of Windows version
- LibForensics: library for developing digital forensics applications
- TrIDLib, identify file types from their binary signatures. Now includes Python binding
Malware analysis
- pyew: command line hexadecimal editor and disassembler, mainly to analyze malware
- Didier Stevens' PDF tools: analyse, identify and create PDF files (includes PDFiD, pdf-parser and make-pdf and mPDF)
- Origapy: Python wrapper for the Origami Ruby module which sanitizes PDF files
- 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
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
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)
- pyparsing: general parsing module
- lxml: most feature-rich and easy-to-use library for working with XML and HTML in the Python language
- 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
