SCADAShutdownTool is an industrial control system testing tool designed for security research and assessment of SCADA environments. The tool provides capabilities for enumerating slave controllers within industrial networks and accessing controller register data. It can read existing register values and modify register data for testing purposes. The tool operates in multiple modes to accommodate different testing scenarios: - Safe-mode for basic enumeration and read operations - Real-mode for standard testing procedures - Aggressive-mode for comprehensive security assessments SCADAShutdownTool is specifically developed for research purposes and security testing of industrial control systems. The tool is intended for authorized security professionals and researchers working on SCADA security assessments.