502 - Pentesting Modbus

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Basic Information

In 1979, the Modbus Protocol was developed by Modicon, serving as a messaging structure. Its primary use involves facilitating communication between intelligent devices, operating under a master-slave/client-server model. This protocol plays a crucial role in enabling devices to exchange data efficiently.

Default port: 502

PORT    STATE SERVICE
502/tcp open  modbus

Enumeration

nmap --script modbus-discover -p 502 <IP>
msf> use auxiliary/scanner/scada/modbusdetect
msf> use auxiliary/scanner/scada/modbus_findunitid

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