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All cops are broadcasting

Obtaining the secret TETRA primitives after decades in the shadows

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Video duration
00:47:29
Language
English
Abstract
In this talk we will discuss the radio jailbreaking journey that enabled us to perform the first public disclosure and security analysis of the proprietary cryptography used in TETRA (Terrestrial Trunked Radio): a European standard for trunked radio globally used by government agencies, police, prisons, emergency services and military operators. Besides governemental applications, TETRA is also widely deployed in industrial environments such as factory campuses, harbor container terminals and airports, as well as critical infrastructure such as SCADA telecontrol of oil rigs, pipelines, transportation and electric and water utilities.

For over two decades, the underlying algorithms have remained secret and bound with restrictive NDAs prohibiting public scrutiny of this highly critical technology. As such, TETRA was one of the last bastions of widely deployed secret proprietary cryptography. We will discuss in detail how we managed to obtain the primitives and remain legally at liberty to publish our findings.

This journey has involved reverse-engineering and exploiting multiple zero-day vulnerabilities in the highly popular Motorola MTM5x00 TETRA radio and its TI OMAP-L138 trusted execution environment (TEE) and covers everything from side-channel attacks on DSPs, through writing decompilers headache-inducing DSP architectures, all the way to exploiting ROM vulnerabilities in the Texas Instruments TEE.

No description available.

Talk ID
camp2023-57100
Event:
camp2023
Day
3
Room
Milliways
Start
3 p.m.
Duration
00:45:00
Track
Milliways
Type of
Talk
Speaker
Jos Wetzels
Carlo Meijer
Wouter Bokslag
Talk Slug & media link
camp2023-57100-all_cops_are_broadcasting
English
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