Discovering and Triangulating Rogue Cell Towers

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A bit about me: • Started off in Civil Engineering (MS, PE) • Always loved computers • Nerded out on all things wireless • Licensed HAM • I love to automate things • Chicken coop • Sprinklers • Caught the DEF CON bug • Wireless CTF
A bit about what I do: • Security Engineer for Barracuda Networks • Incident Response • Pentesting • Red Team, Blue Team • Social Engineering • Phishing Campaigns • Bug bounty • Infrastructure scanning • Product team relations • 2FA, IPAM
Page 1: Discovering and Triangulating Rogue
Page 5 and 6: What is a rogue cell tower? • A d
Page 7 and 8: How are cell simulators used today?
Page 9 and 10: What’s the IMSI in “IMSI-catche
Page 11 and 12: What’s an IMSI? IMSI = Unique ide
Page 13 and 14: Why you should care? - A short stor
Page 15 and 16: Why build a detector? • There are
Page 17 and 18: How do you detect a rogue cell towe
Page 19 and 20: How do you detect a rogue cell towe
Page 21 and 22: Why locate a tower? • So you’ve
Page 23 and 24: How do you locate a tower? (There
Page 25 and 26: How do you locate a tower? Trilater
Page 27 and 28: Triangulation N Home Store Work
Page 29 and 30: Triangulation N X,Y X,Y X,Y
Page 31 and 32: Triangulation
Page 33 and 34: How do you locate a tower? My detec
Page 35 and 36: How do you locate a tower? Detector
Page 41 and 42: Trilateration Home 1 mile Store 1 m
Page 43 and 44: How do you locate a tower? Power is
Page 45 and 46: How do you locate a tower? (There
Page 47: Brace yourself… this is quite lit
Page 50 and 51: What’s does it cost? • $10 Rasp
Page 52 and 53:
SIM900 or Field test mode • Many
Page 54 and 55:
SIM900 ARFCN Rxl bsic Cell ID MCC M
Page 56 and 57:
GPS Serial NMEA Data - National Mar
Page 58 and 59:
Raspberry Pi 3 • Stock Raspbian O
Page 60 and 61:
Data collection: • Everything dum
Page 62 and 63:
Let’s make it pretty: Wireless CT
Page 64 and 65:
There’s a disturbance in the forc
Page 66:
Want to help? Questions? defconjust
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Discovering and Triangulating Rogue Cell Towers

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