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Automating Reconnaissance in Penetration Testing

How to save time by combining repetitive recon steps into a single Bash tool.

Why Automate?

Reconnaissance is the most repetitive phase of a penetration test. Running the same commands by hand for every target wastes time and invites mistakes.

Core Flow

A good recon chain includes:

  • Subdomain discovery
  • Live host detection
  • Port and service scanning
  • Directory/file brute-force
#!/usr/bin/env bash
TARGET="$1"
nmap -sV -oN scan.txt "$TARGET"
gobuster dir -u "http://$TARGET" -w wordlist.txt

Conclusion

Automation doesn't replace thinking; it takes over the repetitive work so you can spend more time on analysis. Always verify the output manually.