#smod smod is a modular framework with every kind of diagnostic and offensive feature you could need in order to pentest modbus protocol. It is a full Modbus protocol implementation using Python and Scapy. This software could be run on Linux/OSX under python 2.7.x.
##Summery SCADA (Process Control Networks) based systems have moved from proprietary closed networks to open source solutions and TCP/IP enabled networks steadily over recent years. This has made them vulnerable to the same security vulnerabilities that face our traditional computer networks.
The Modbus/TCP protocol was used as the reference protocol to display the effectiveness of the test bed in carrying out cyber attacks on a power system protocol. Modbus/TCP was chosen specifically for these reasons:
- modbus is still widely used in power systems.
- modbus/TCP is simple and easy to implement.
- modbus protocol libraries are freely available for utilities to implement smart grid applications.
You can use this tool to vulnerability assessment a modbus protocol.
##Demo Just a little demo showing off the basics
root@kali:~/smod# python smod.py
_______
< SMOD >
-------
\ ^__^
\ (xx)\_______
(__)\ )\/\
U ||----w |
SMOD >help
Command Description
------- -----------
back Move back from the current context
exit Exit the console
exploit Run module
help Help menu
show Displays modules of a given type, or all modules
set Sets a variable to a value
use Selects a module by name
SMOD >show modules
Modules Description
------- -----------
modbus/function/readCoils Fuzzing Read Coils Function
modbus/function/readDiscreteInput Fuzzing Read Discrete Inputs Function
modbus/function/readHoldingRegister Fuzzing Read Holding Registers Function
modbus/function/readInputRegister Fuzzing Read Input Registers Function
modbus/function/writeSingleCoils Fuzzing Write Single Coil Function
modbus/function/writeSingleRegister Fuzzing Write Single Register Function
modbus/scanner/discover Check Modbus Protocols
modbus/scanner/getfunc Enumeration Function on Modbus
modbus/scanner/uid Brute Force UID
SMOD >
Brute Force Modbus UID
SMOD >use modbus/scanner/uid
SMOD modbus(uid) >show options
Name Current Setting Required Description
---- --------------- -------- -----------
Function 1 False Function code, Defualt:Read Coils.
Output True False The stdout save in output directory
RHOSTS True The target address range or CIDR identifier
RPORT 502 False The port number for modbus protocol
Threads 1 False The number of concurrent threads
SMOD modbus(uid) >set RHOSTS 192.168.1.6
SMOD modbus(uid) >exploit
[+] Module Brute Force UID Start
[+] Start Brute Force UID on : 192.168.1.6
[+] UID on 192.168.1.6 is : 10
SMOD modbus(uid) >
Enumeration Function on Modbus
SMOD >use modbus/scanner/getfunc
SMOD modbus(getfunc) >show options
Name Current Setting Required Description
---- --------------- -------- -----------
Output True False The stdout save in output directory
RHOSTS True The target address range or CIDR identifier
RPORT 502 False The port number for modbus protocol
Threads 1 False The number of concurrent threads
UID None True Modbus Slave UID.
SMOD modbus(getfunc) >set RHOSTS 192.168.1.6
SMOD modbus(getfunc) >set UID 10
SMOD modbus(getfunc) >exploit
[+] Module Get Function Start
[+] Looking for supported function codes on 192.168.1.6
[+] Function Code 1(Read Coils) is supported.
[+] Function Code 2(Read Discrete Inputs) is supported.
[+] Function Code 3(Read Multiple Holding Registers) is supported.
[+] Function Code 4(Read Input Registers) is supported.
[+] Function Code 5(Write Single Coil) is supported.
[+] Function Code 6(Write Single Holding Register) is supported.
[+] Function Code 7(Read Exception Status) is supported.
[+] Function Code 8(Diagnostic) is supported.
[+] Function Code 15(Write Multiple Coils) is supported.
[+] Function Code 16(Write Multiple Holding Registers) is supported.
[+] Function Code 17(Report Slave ID) is supported.
[+] Function Code 20(Read File Record) is supported.
[+] Function Code 21(Write File Record) is supported.
[+] Function Code 22(Mask Write Register) is supported.
[+] Function Code 23(Read/Write Multiple Registers) is supported.
SMOD modbus(getfunc) >
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