222 lines
7.5 KiB
HTML
222 lines
7.5 KiB
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<title>subfinder Cheatsheet - Cheatsheets - Launch Pad</title>
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<h1 class="blog-page-title">subfinder Cheatsheet</h1>
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</div>
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</div>
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<div class="blog-post-container">
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<div class="blog-posts-container" style="max-width: 900px; margin: 0 auto;">
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<p><a href="index.html">← Back to cheatsheets</a></p>
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<p><a href="../index.html">← Home</a></p>
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<hr>
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<p>Subfinder is a fast passive subdomain enumeration tool by ProjectDiscovery. It uses passive sources to discover subdomains without sending any traffic to the target.</p>
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<hr>
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<h2>Basic Usage</h2>
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<ul>
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<li>subfinder -d <domain> - Basic subdomain enumeration</li>
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</ul>
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<ul>
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<li>subfinder -dL domains.txt - Enumerate from domain list</li>
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</ul>
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<hr>
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<h2>Input Options</h2>
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<ul>
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<li>-d, -domain - Target domain</li>
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</ul>
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<ul>
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<li>-dL, -list - File containing list of domains</li>
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</ul>
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<hr>
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<h2>Output Options</h2>
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<ul>
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<li>-o, -output - Output file</li>
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</ul>
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<ul>
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<li>-oJ, -json - JSON output</li>
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</ul>
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<ul>
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<li>-oD, -output-dir - Directory for output files</li>
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</ul>
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<ul>
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<li>-cs, -collect-sources - Include source info in output</li>
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</ul>
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<ul>
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<li>-oI, -ip - Include IP addresses in output</li>
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</ul>
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<hr>
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<h2>Configuration</h2>
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<ul>
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<li>-config - Config file path</li>
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</ul>
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<ul>
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<li>-pc, -provider-config - Provider config file</li>
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</ul>
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<ul>
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<li>-r, -resolver - Comma separated resolvers</li>
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</ul>
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<ul>
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<li>-rL, -resolver-list - File containing resolvers</li>
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</ul>
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<ul>
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<li>-active - Verify subdomains via DNS resolution</li>
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</ul>
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<hr>
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<h2>Source Options</h2>
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<ul>
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<li>-s, -sources - Specific sources to use (comma separated)</li>
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</ul>
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<ul>
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<li>-recursive - Use recursive sources only</li>
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</ul>
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<ul>
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<li>-all - Use all sources</li>
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</ul>
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<ul>
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<li>-es, -exclude-sources - Exclude specific sources</li>
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</ul>
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<ul>
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<li>-ls, -list-sources - List all available sources</li>
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</ul>
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<hr>
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<h2>Rate Limiting</h2>
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<ul>
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<li>-t, -threads - Concurrent threads (default 10)</li>
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</ul>
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<ul>
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<li>-rl, -rate-limit - Max requests per second</li>
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</ul>
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<ul>
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<li>-timeout - Timeout in seconds (default 30)</li>
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</ul>
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<hr>
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<h2>Other Options</h2>
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<ul>
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<li>-silent - Only show subdomains in output</li>
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</ul>
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<ul>
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<li>-v, -verbose - Verbose output</li>
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</ul>
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<ul>
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<li>-version - Show version</li>
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</ul>
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<ul>
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<li>-nc, -no-color - Disable color output</li>
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</ul>
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<hr>
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<h2>Configuration File</h2>
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<h3>Location</h3>
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<ul>
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<li>~/.config/subfinder/provider-config.yaml - API keys config</li>
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</ul>
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<h3>Example Config</h3>
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<pre><code>securitytrails:
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- your_api_key_here
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shodan:
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- your_api_key_here
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virustotal:
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- your_api_key_here
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chaos:
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- your_api_key_here
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github:
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- your_github_token</code></pre>
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<hr>
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<h2>Common Examples</h2>
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<h3>Basic Scan</h3>
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<pre><code>subfinder -d example.com</code></pre>
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<p>Quick passive subdomain enumeration.</p>
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<h3>Save to File</h3>
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<pre><code>subfinder -d example.com -o subdomains.txt</code></pre>
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<p>Save results to file.</p>
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<h3>JSON Output with Sources</h3>
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<pre><code>subfinder -d example.com -oJ -cs -o results.json</code></pre>
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<p>JSON output with source information.</p>
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<h3>Silent Mode for Piping</h3>
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<pre><code>subfinder -d example.com -silent | httpx</code></pre>
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<p>Pipe to httpx for live domain checking.</p>
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<h3>Multiple Domains</h3>
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<pre><code>subfinder -dL domains.txt -o all_subs.txt</code></pre>
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<p>Enumerate multiple domains from file.</p>
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<h3>With IP Resolution</h3>
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<pre><code>subfinder -d example.com -oI -o subs_with_ips.txt</code></pre>
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<p>Include IP addresses in output.</p>
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<h3>Specific Sources</h3>
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<pre><code>subfinder -d example.com -s shodan,virustotal,securitytrails</code></pre>
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<p>Use only specific sources.</p>
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<h3>Active Verification</h3>
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<pre><code>subfinder -d example.com -active</code></pre>
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<p>Verify subdomains via DNS resolution.</p>
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<hr>
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<h2>Tips</h2>
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<ul>
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<li>Configure API keys for significantly better results</li>
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</ul>
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<ul>
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<li>Use -silent for clean output suitable for piping</li>
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</ul>
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<ul>
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<li>Combine with httpx for live domain verification</li>
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</ul>
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<ul>
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<li>Use -all to enable all sources (slower but thorough)</li>
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</ul>
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<ul>
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<li>Fast and lightweight compared to amass</li>
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</ul>
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<ul>
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<li>Great for quick reconnaissance before deeper scanning</li>
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</ul>
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<ul>
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<li>Passive only - won't trigger IDS/IPS</li>
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</ul>
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<ul>
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<li>Part of ProjectDiscovery toolkit - integrates well with nuclei, httpx</li>
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</ul>
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<hr>
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<p><a href="index.html">← Back to cheatsheets</a></p>
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<p><a href="../index.html">← Home</a></p>
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