Attacking ICS Plant #1

Prompts and answers

• Which is the function used to read holding registers in pymodbus library?
  read_holding_registers
• Which is the function used to write holding registers in pymodbus library?
  write_register
• How many phases can we observe?
  3
• How many sensors can we observe?
  2
• How many actuators can we observe?
  3
• Using the script discovery.py, how many registers can we count?
  16
• After the plant is started and a bottle is loaded, how many registers are continuously changing their values?
  4
• Which is the minimum observed value?
  0
• Which is the maximum observed value?
  1
• Which registry is holding its value?
  16
• Which registries are set to 1 while the nozzle is filling a bottle?
  2 4
• Which registries are set to 1 while the roller is moving the bottles?
  1 3
• Which is the color of the water level sensor?
  red
• Which is the color of the bottle sensor?
  green
• If you observe the plant at the very beginning, which is the registry associated with the roller?
  3
• Based on the previous answer, which is the registry associated with the water level sensor?
  1
• Which is the registry associated with the nozzle?
  4