NDH-Intercoms_presentation_Dudek(1).pdf

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House intercoms attacks

When frontdoors become backdoors

Presented the

02/07/2016

NDH 2016

Sébastien Dudek

For

About me



Company: Synacktiv

Interests: radio-communications (Wi-Fi,

RFID, GSM, PLC...), networking, web,

Linux security… and intercoms!

Do Red Team tests!



Red team tests at Synacktiv



And can get spotted sometimes...

Our story with intercoms



Synacktiv’s team got bigger

→ moved to another place



The new place got new toys

→ access control systems,

alarms, and a

digital intercom...

This kind of intercom...



Features:



Pass code

Vigik

Call a resident on his

phone

When calling a resident, this intercoms use the mobile network

→ that explains the (+33)6 prefix displayed on the resident’s phone

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