Human Machine Interface (HMI) systems can be found in SCADA networks regularly and they do not necessarily operate on the same ports as other ICS/SCADA devices. (However, some HMIs use ICS protocols). For example, Sielco Sistemi Winlog is a simple but very popular HMI software for PCs that has remote exploits publicly available.
This recipe shows you how to identify Sielco Sistemi Winlog instances (and HMI systems in general) on the network with Nmap.
To find Sielco Sistemi Winlog instances, run the following command:
$ nmap -Pn -sT -p46824 <target>Server instances running on TCP port 46824 might indicate that this is a Sielco Winlog server.
Sielco Sistemi Winlog's server runs on TCP port 46824 and it has been found to be susceptible to a critical remote code execution vulnerability. We used the nmap-Pn -sT -p46824 <target> command to identify if the target is running a server on port 46824 (-p46824). Once you have identified this...