muXTCP
- Type
- Slides
- Tags
- TCP/IP
- Authors
- Paul Böhm
- Event
- Chaos Communication Congress 22th (22C3) 2005
- Indexed on
- Mar 27, 2013
- URL
- http://events.ccc.de/congress/2005/fahrplan/attachments/630-muXTCP-22c3.pdf
- File name
- 630-muXTCP-22c3.pdf
- File size
- 1.3 MB
- MD5
- 39c561b37169adaf9e3fc94b952ec624
- SHA1
- 22e439d971bc493fe1b791ec21e79754ed8c4a00
This talk will discuss design approaches for writing flexible userland tcp/ip stacks for network hacking tools. Lots of network hacking tools require the same basic infrastructure: reading, writing, decoding and encoding packets, creating and maintaining protocol state, and some application logic. The muXTCP Project aims to develop a reusable implementation of this basic infrastructure. This talk will present and discuss design approaches for implementing a hacker-friendly tcp/ip protocol stack framework. Based on experiences with prototypes, whose sourcecode will be released at the conference, advantages and disadvantages of composition and inheritance based implementation strategies are discussed. Some attention will then be given to Design Patterns that can help in generalizing the framework, and finally a promising hybrid design that is currently in development will be offered for discussion. The framework is written in Python, using Twisted as asynchronous event framework, and Scapy as networking/decoding backend. The design is loosely based on a 1995 Paper named "A Framework for Network Protocol Software".
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