/
modbus.py
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/
modbus.py
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from fuzzowski.fuzzers.ifuzzer import IFuzzer
from fuzzowski.mutants.spike import *
from fuzzowski import *
from fuzzowski import Session
class MODBUS(IFuzzer):
"""
MODBUS Fuzzing Module
Use at your own risk, and please do not use in a production environment
@Author: https://github.com/1modm
Based on https://github.com/youngcraft/boofuzz-modbus
and https://github.com/riptideio/pymodbus
virtualenv venv -p python3
source venv/bin/activate
pip install -r requirements.txt
python -m fuzzowski 127.0.0.1 502 -p tcp -f modbus -rt 0.5 -r read_coil
python -m fuzzowski 127.0.0.1 502 -p tcp -f modbus
python -m fuzzowski 127.0.0.1 502 -p tcp -f modbus -rt 1 -m modbusMon
"""
# --------------------------------------------------------------- #
name = 'modbus'
@staticmethod
def get_requests() -> List[callable]:
return [MODBUS.read_coil, MODBUS.read_input, MODBUS.read_holding, MODBUS.read_discrete, MODBUS.single_coil, MODBUS.single_register, MODBUS.multiple_coil, MODBUS.multiple_register, MODBUS.other_operations]
# --------------------------------------------------------------- #
@staticmethod
def define_nodes(*args, **kwargs) -> None:
# ------------------ Read Coil Status (FC=01) ------------------- #
s_initialize("modbus_read_coil")
with s_block("modbus_head"):
s_word(0x0001,name='transId',fuzzable=True)
s_word(0x0000,name='protoId',fuzzable=False)
s_word(0x06,endian='>',name='length')
s_byte(0xff,name='unit Identifier',fuzzable=False)
with s_block('pdu'):
s_byte(0x01,name='funcCode read coil memory',fuzzable=False)
s_word(0x0000,name='start address')
s_word(0x0000,name='quantity')
s_initialize('read_holding_registers')
with s_block("modbus_head"):
s_word(0x0001,name='transId',fuzzable=True)
s_word(0x0002,name='protoId',fuzzable=False)
s_word(0x06,endian='>',name='length')
s_byte(0xff,name='unit Identifier',fuzzable=False)
with s_block('read_holding_registers_block'):
s_byte(0x01,name='read_holding_registers')
s_word(0x0000,name='start address')
s_word(0x0000,name='quantity')
# --------------------------------------------------------------- #
# ------------------ Read Input Status (FC=02) ------------------ #
s_initialize('ReadDiscreteInputs')
with s_block("modbus_head"):
s_word(0x0001,name='transId',fuzzable=True)
s_word(0x0002,name='protoId',fuzzable=False)
s_word(0x06,endian='>',name='length')
s_byte(0xff,name='unit Identifier',fuzzable=False)
with s_block('ReadDiscreteInputsRequest'):
s_byte(0x02,name='funcCode',fuzzable=False)
s_word(0x0000,name='start_address')
s_word(0x0000,name='quantity')
# --------------------------------------------------------------- #
# ---------------- Read Holding Registers (FC=03) --------------- #
s_initialize('ReadHoldingRegisters')
with s_block("modbus_head"):
s_word(0x0001,name='transId',fuzzable=True)
s_word(0x0002,name='protoId',fuzzable=False)
s_word(0x06,endian='>',name='length')
s_byte(0xff,name='unit Identifier',fuzzable=False)
with s_block('ReadHoldingRegistersRequest'):
s_byte(0x03,name='funcCode',fuzzable=False)
s_word(0x0000,name='start_address')
s_word(0x0000,name='quantity')
# --------------------------------------------------------------- #
# ---------------- Read Input Registers (FC=04) ----------------- #
s_initialize('ReadInputRegisters')
with s_block("modbus_head"):
s_word(0x0001,name='transId',fuzzable=True)
s_word(0x0002,name='protoId',fuzzable=False)
s_word(0x06,endian='>',name='length')
s_byte(0xff,name='unit Identifier',fuzzable=False)
with s_block('ReadInputRegistersRequest'):
s_byte(0x04,name='funcCode',fuzzable=False)
s_word(0x0000,name='start_address')
s_word(0x0000,name='quantity')
# --------------------------------------------------------------- #
# ------------------ Force Single Coil (FC=05) ------------------ #
s_initialize('WriteSingleCoil')
with s_block("modbus_head"):
s_word(0x0001,name='transId',fuzzable=True)
s_word(0x0002,name='protoId',fuzzable=False)
s_word(0x06,endian='>',name='length')
s_byte(0xff,name='unit Identifier',fuzzable=False)
with s_block('WriteSingleCoilRequest'):
s_byte(0x05,name='funcCode',fuzzable=False)
s_word(0x0000,name='start_address')
s_word(0x0000,name='quantity')
# --------------------------------------------------------------- #
# ---------------- Preset Single Register (FC=06) --------------- #
s_initialize('WriteSingleRegister')
with s_block("modbus_head"):
s_word(0x0001,name='transId',fuzzable=True)
s_word(0x0002,name='protoId',fuzzable=False)
s_word(0x06,endian='>',name='length')
s_byte(0xff,name='unit Identifier',fuzzable=False)
with s_block('WriteSingleRegisterRequest'):
s_byte(0x06,name='funcCode',fuzzable=False)
s_word(0x0000,name='output_address')
s_word(0x0000,name='output_value')
# --------------------------------------------------------------- #
# ---------------- Force Multiple Coils (FC=15) ----------------- #
s_initialize('WriteMultipleCoils')
with s_block("modbus_head"):
s_word(0x0001,name='transId',fuzzable=True)
s_word(0x0002,name='protoId',fuzzable=False)
s_word(0x06,endian='>',name='length')
s_byte(0xff,name='unit Identifier',fuzzable=False)
with s_block('WriteMultipleCoilsRequest'):
s_byte(0x0f,name='func_code',fuzzable=False)
s_word(0x0000,name='starting_address')
s_dword(0x0000,name='byte_count')
s_size("outputsValue", length=8)
with s_block("outputsValue"):
s_word(0x00,name='outputs_value')
# --------------------------------------------------------------- #
# --------------- Preset Multiple Registers (FC=16) ------------- #
s_initialize('WriteMultipleRegisters')
with s_block("modbus_head"):
s_word(0x0001,name='transId',fuzzable=True)
s_word(0x0002,name='protoId',fuzzable=False)
s_word(0x06,endian='>',name='length')
s_byte(0xff,name='unit Identifier',fuzzable=False)
with s_block('WriteMultipleRegistersRequest'):
s_byte(0x10,name='func_code',fuzzable=False)
s_word(0x0000,name='starting_address')
s_dword(0x0000,name='byte_count')
s_size("outputsValue", length=16, name="outputsValue_1")
s_size("outputsValue", length=8, name="outputsValue_2")
with s_block("outputsValue"):
s_dword(0x0000,name='outputs_value')
# --------------------------------------------------------------- #
# ---------------------------- Other ---------------------------- #
s_initialize('ReadExceptionStatus')
with s_block("modbus_head"):
s_word(0x0001,name='transId',fuzzable=True)
s_word(0x0002,name='protoId',fuzzable=False)
s_word(0x06,endian='>',name='length')
s_byte(0xff,name='unit Identifier',fuzzable=False)
with s_block('ReadExceptionStatusRequest'):
s_byte(0x07,name='funcCode',fuzzable=False)
s_initialize('ReadExceptionStatusError')
with s_block("modbus_head"):
s_word(0x0001,name='transId',fuzzable=True)
s_word(0x0002,name='protoId',fuzzable=False)
s_word(0x06,endian='>',name='length')
s_byte(0xff,name='unit Identifier',fuzzable=False)
with s_block('ReadExceptionStatusErrorRequest'):
s_byte(0x87,name='funcCode',fuzzable=False)
s_initialize('ReportSlaveId')
with s_block("modbus_head"):
s_word(0x0001,name='transId',fuzzable=True)
s_word(0x0002,name='protoId',fuzzable=False)
s_word(0x06,endian='>',name='length')
s_byte(0xff,name='unit Identifier',fuzzable=False)
with s_block('ReportSlaveIdRequest'):
s_byte(0x11,name='func_code',fuzzable=False)
s_initialize('ReadFileSub')
with s_block("modbus_head"):
s_word(0x0001,name='transId',fuzzable=True)
s_word(0x0002,name='protoId',fuzzable=False)
s_word(0x06,name='length')
s_byte(0xff,name='unit Identifier',fuzzable=False)
with s_block('ReadFileSubRequest'):
s_byte(0x06,name='refType',fuzzable=False)
s_word(0x0001,name='fileNumber')
s_word(0x0000,name='recordNumber')
s_word(0x0000,name='recordLength')
s_initialize('ReadFileRecord')
with s_block("modbus_head"):
s_word(0x0001,name='transId',fuzzable=True)
s_word(0x0002,name='protoId',fuzzable=False)
s_word(0x06,endian='>',name='length')
s_byte(0xff,name='unit Identifier',fuzzable=False)
with s_block('ReadFileRecordRequest'):
s_byte(0x14,name='funcCode',fuzzable=False)
s_byte(0x0001,name='byteCount')
s_initialize('WriteFileSub')
with s_block("modbus_head"):
s_word(0x0001,name='transId',fuzzable=True)
s_word(0x0002,name='protoId',fuzzable=False)
s_word(0x06,endian='>',name='length')
s_byte(0xff,name='unit Identifier',fuzzable=False)
with s_block('WriteFileSubRequest'):
s_byte(0x06,name='refType',fuzzable=False)
s_word(0x0001,name='fileNumber')
s_word(0x0000,name='recordNumber')
# ---------------------------------
# s_size is record
s_size('recordData',length=16,name='recordLength')
with s_block("recordData"):
s_word(0x0000,name='recordData_value')
s_word(0x0000,name='recordLength_value')
s_initialize('WriteFileRecord')
with s_block("modbus_head"):
s_word(0x0001,name='transId',fuzzable=True)
s_word(0x0002,name='protoId',fuzzable=False)
s_word(0x06,endian='>',name='length')
s_byte(0xff,name='unit Identifier',fuzzable=False)
with s_block('WriteFileRecordRequest'):
s_byte(0x15,name='funcCode',fuzzable=False)
s_byte(0x00,name='datalength')
s_initialize('MaskWriteRegister')
with s_block("modbus_head"):
s_word(0x0001,name='transId',fuzzable=True)
s_word(0x0002,name='protoId',fuzzable=False)
s_word(0x06,endian='>',name='length')
s_byte(0xff,name='unit Identifier',fuzzable=False)
with s_block('MaskWriteRegisterRequest'):
s_byte(0x96,name='funcCode',fuzzable=False)
s_word(0x0000,name='refAddr')
s_word(0xffff,name='andMask')
s_word(0x0000,name='orMask')
s_initialize('ReadWriteMultipleRegisters')
with s_block("modbus_head"):
s_word(0x0001,name='transId',fuzzable=True)
s_word(0x0002,name='protoId',fuzzable=False)
s_word(0x06,endian='>',name='length')
s_byte(0xff,name='unit Identifier',fuzzable=False)
with s_block('ReadWriteMultipleRegistersRequest'):
s_byte(0x17,name='funcCode',fuzzable=False)
s_word(0x0000,name='readStartingAddr')
s_word(0x0001,name='readQuantityRegisters')
s_word(0x0000,name='writeStartingAddr')
s_size('writeQuantityRegisters', length=16, endian='>')
s_size('writeQuantityRegisters', length=8, endian='>', name="byteCount", math=lambda x:2*x)
with s_block('writeQuantityRegisters'):
s_size('modbus_head',length=2)
# --------------------------------------------------------------- #
# --------------------------------------------------------------- #
@staticmethod
def read_coil(session: Session) -> None:
session.connect(s_get('modbus_read_coil'))
session.connect(s_get('read_holding_registers'))
@staticmethod
def read_discrete(session: Session) -> None:
session.connect(s_get('ReadDiscreteInputs'))
@staticmethod
def read_holding(session: Session) -> None:
session.connect(s_get('ReadHoldingRegisters'))
@staticmethod
def read_input(session: Session) -> None:
session.connect(s_get('ReadInputRegisters'))
@staticmethod
def single_coil(session: Session) -> None:
session.connect(s_get('WriteSingleCoil'))
@staticmethod
def single_register(session: Session) -> None:
session.connect(s_get('WriteSingleRegister'))
@staticmethod
def multiple_coil(session: Session) -> None:
session.connect(s_get('WriteMultipleCoils'))
@staticmethod
def multiple_register(session: Session) -> None:
session.connect(s_get('WriteMultipleRegisters'))
@staticmethod
def other_operations(session: Session) -> None:
session.connect(s_get('ReadExceptionStatus'))
session.connect(s_get('ReadExceptionStatusError'))
session.connect(s_get('ReportSlaveId'))
session.connect(s_get('ReadFileSub'))
session.connect(s_get('ReadFileRecord'))
session.connect(s_get('WriteFileSub'))
session.connect(s_get('WriteFileRecord'))
session.connect(s_get('MaskWriteRegister'))
#session.connect(s_get('ReadWriteMultipleRegisters'))