Camp 2011 - Version 1.4

Chaos Communication Camp 2011
Project Flow Control

Marius Ciepluch
Day Day 1 - 2011-08-10
Room Baikonur
Start time 18:00
Duration 01:00
ID 4453
Event type Lecture
Track Science
Language used for presentation English

Stuff you don't see - every day

GNU Radio Internals - how to use the Framework

Software Defined Radio defines a new approach to analyze signals with software. With the flexibility of software SDR literally opened a new spectrum of hacking.

However the internals of Digital Signal Processing, especially from the perspective of informatics and computer science, are hard to explore. The lecture delivers a case-study on how to analyze 802.15.4 (alias Zigbee, as an easy protocol) with USRPs (modular popular hardware for SDR) on a real-time protocol (for send time verification, sniffing etc.). Furthermore internals on DSP will be explained - as simple as possible. The intent is to also give a non-academic start point and to seed motivation to explore more advanced projects (like osmocom*). So practically the lecture explains what a Software Spectrum Analyzer or a Software Oscilloscope does: from a Hacker's perspective. It gives insight into a USRP(2) internals and goes into programming C++ and Python with GNU Radio.

All demo-analysis will remain within the ISM band. - No GSM/Tetra will be captured. It's about the SDR technology and its use-cases - for a clear and constructive adaption by the Hacker's community to assist interesting making projects (of home-automation devices using 802.15.4 e.g.). In many media articles - especially from last Chaos Congress - a misunderstanding can arise to reduce SDR to (GSM) attack scenarios while this is not the only/general use-case. The lecture however clearly aims to assist any intended understanding how the osmocom* implementations work - for example. Or other projects on cgran[1].


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