2020 EUROPEAN CYBER SECURITY CHALLENGE

3-7 November 2020

Vienna, Austria

Embedded Crypto

Event HACKFEST2020
Tags Crypto Forensics Network traffic
Difficulty
Easy
Additional Info
Description

An embedded device serves as an electronic bank teller. You’ve managed to get your hands on a dump of the flash attached to it and the communication performed against the back-office.

The challenge is based on a network capture file and a memory dump. The capture file contains one encrypted (TLS ) communication stream. The memory dump contains several hints and required information for decrypting the stream and cipher.

Tasks

Can you get the secret account number?