PPreetimantinpreetimant.hashnode.dev·4d ago · 11 min readUnderstanding PLC Ladder Logic and Modbus RTU - HTB FactoryFactory starts with a water-storage facility in a bad state: the HMI is unavailable, the high and low-level sensors are corrupted, and the PLC is no longer controlling the tank safely. HTB gives us a 00
PPreetimantinpreetimant.hashnode.dev·Sep 15 · 14 min readUnderstanding Modbus/TCP Through Packet Analysis — HTB Watch TowerWhile working through Hack The Box's ICS/SCADA track, I completed Watch Tower, an introductory packet-analysis lab built around Modbus/TCP traffic. The challenge itself was fairly short: a PCAP captur00
