Welcome to the Enterprise Shell Command Scanner! This powerful system administration tool is designed to help network administrators execute diagnostic commands on remote systems. The scanner provides a user-friendly interface for running various shell commands to gather system information, check network connectivity, and perform security assessments across your infrastructure.

• Master command injection attack techniques and vectors
• Learn to exploit unsafe system command execution in web applications
• Practice bypassing input validation and filtering mechanisms
• Understand the critical security risks of executing user-controlled commands

The Shell Command Scanner features a dropdown menu with pre-approved commands for system diagnostics. However, the application's implementation contains critical security flaws that allow attackers to execute arbitrary system commands. Your mission is to identify these vulnerabilities, bypass the security controls, and use command injection techniques to retrieve the hidden flag from the server.

Command injection vulnerabilities occur when applications execute system commands using user-supplied data without proper validation or sanitization. Attackers can exploit these flaws by injecting shell metacharacters and command separators to execute additional commands beyond what the application intended, potentially leading to complete system compromise.