LETS TALK BACNET SCADASIDES LAST MINUTE CHANGE MICHAEL

LET’S TALK BACNET SCADASIDES LAST MINUTE CHANGE MICHAEL TOECKER Mikhail Turcher, big fanci pantsie

L O C O T EW O I R V P R T E E OV N C R A B BE CY Ooooh… Cybah Overfuncher!

BASICS BACnet is short for Building Automation and Control Network • BACnet developed started in 1985, was adopted by ASHRAE in 1995, and is now a major component of most Building Automation systems. • Basically, it’s a protocol used for control, monitoring, and interoperability for automation systems used in buildings • BACnet controllers are basically PLCs, controlling HVAC, Lighting, Security, and other systems you will find in large buildings • BACnet networks are… complicated and strange for IT folks…. More in a few. • Like nearly every ICS protocol, BACnet is also insecure by design • It supports encryption… It does, 56 -Bit DES. Is this really encryption anymore? • You can also set a password. Maybe. Kinda, it’s like 6 characters with no logging, and doesn’t protect against most bacnet commands Basi…. . Sknnnnzzzz….

A S E TH S. . E E N E R B L O F TIT A V E E B H Z I SU L E G O E SIB L H N O T AP IN E S P O E LT R W U E FAH O S T C K E D

PRIOR ART @Warez. Joe - Shmoo. Con 2013: How To Own A Building: Exploiting the Physical World With Bacnet - http: //www. youtube. com/watch? v=d 3 jtmv 6 Y 9 uk Redpoint – Bacnet Discovery NSE - http: //www. digitalbond. com/blog/2014/03/26/redpoint-discoverenumerate-bacnet-devices/ Dis presentation needs more goats

A BACNET CONTROLLER POWAH! Ethernet Port RS 485 RS 232! Digital Inputs ? Universal Inputs Analog Outputs

OTHER BACNET DEVICE I tells him to Pressy the butensies!! Press them!!! He does not.

BACNET NETWORKS

BACNET OBJECTS

CHARACTERISTICS OF BACNET PACKETS ADD WIREHSHARK CAPTURE UDP 47808

WHAT YOU NEED TO COMMUNICATE You need: 1. An Instance ID – An ID that uniquely identifies a device 2. Network ID – Think of it like a subnet, allows separation of groups of devices 3. The Object – A Logical construct holding the data you want After that, you can make a request to a Specific Device on a Specific Network.

CHARACTERISTICS OF BACNET PACKETS Magic Number 0 x 810 A Object-Name Request

CHARACTERISTICS OF BACNET PACKETS Magic Number 0 x 810 A Object-Name Response

INTERESTING THINGS TO DO WITH BACNET REGISTER_FOREIGN_DEVICE()

FOREIGN DEVICE REGISTRATION

59 WILL GET YOU 505 Potential Issues: 1. Requires Spoofing 2. Requires ability to change port numbers.

LOTS OF BACNET ON THE NET

FOCUSED ON THE BACNET NETWORK This opinion is shortsighted. Here’s why….

CONCLUSION Why BACNET? Cause I work on Critical Infrastructure, and it’s nice to pwn something that I don’t get yelled at for owning. Cause it’s interesting, and fun, and gets me some attention to demonstrate I know what I’m doing. Cause it can have some interesting consequences for owners and others. Why not? It’s still ICS

? S N O I T S E U , Q ks n a Th e ik M Heh. Goatsies. Always End with Goatsies.