BACnet (Building Automation)
BACnetBuilding Automation and Control Network
BACnet is a communication protocol for building automation and control networks. It is used in HVAC, lighting, and access control systems.
Ports
| Port | Protocol | Description |
|---|---|---|
| 47808 | tcp/udp | BACnet (0xBAC0) |
Fingerprints
| Banner / Probe | Expected Response |
|---|---|
nmap -sV -p <port> <target> | Service banner and version info |
nc -nv <target> <port> | Raw banner grab |
Key Files
| Path | Description |
|---|---|
/etc/passwd | List of system users |
/etc/shadow | Password hashes for local users |
/etc/ssh/sshd_config | SSH server configuration |
~/.ssh/id_rsa | SSH private key |
Default Credentials
| Username | Password | Context |
|---|---|---|
admin | admin | Generic admin account |
root | root | Generic root account |
Known CVEs
| Identifier | Type | Description |
|---|---|---|
— | Info | BACnet devices publicly exposed |
Exploitation Primitives
| Technique | Tool / Command | Result |
|---|---|---|
| Recon | nmap -sV -sC -p- <target> | Full port/service scan |
| Enumeration | nmap --script <service>-* -p <port> <target> | Service-specific NSE scripts |
Notes
Always start with full port scan: `nmap -sV -sC -p- <target>`.
Check for default credentials before brute-forcing.
Use service-specific NSE scripts: `nmap --script <service>-* -p <port> <target>`.
Remember to check both IPv4 and IPv6 if applicable.
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References