What is the reconnaissance phase in penetration testing, including its techniques and common tools?

Here's an explanation of the reconnaissance phase in penetration testing, based on the provided image:

PEN-TESTING PHASES - Reconnaissance

Reconnaissance is the initial phase of penetration testing where testers gather information about the target system or network. The goal is to collect as much data as possible to understand the target's attack surface and potential vulnerabilities.

• Techniques Used:

  • Open-Source Intelligence (OSINT): This involves collecting information from publicly available sources, such as websites, social media, news articles, and public databases.
  • Signals Intelligence (SIGINT): This is a field of intelligence-gathering that involves intercepting and analyzing signals, which can include communications intelligence (COMINT) and electronic intelligence (ELINT).

• Common Tools Used During This Phase:

  • Shodan: Used for discovering internet-facing assets, such as servers, webcams, and IoT devices, by scanning for open ports and services.
  • Maltego: A tool for mapping relationships between data points, helping to visualize connections between people, companies, domains, and other entities.
  • theHarvester: Used for gathering relationships between data points, specifically focusing on collecting emails and subdomains associated with a target.
  • Whois, nslookup, and Sublist3r: These tools help identify registered domains and subdomains.
    • Whois provides registration details for domain names.
    • nslookup queries DNS servers for domain name or IP address information.
    • Sublist3r enumerates subdomains using various search engines.
  • Google Dorking, recon-ng, and FOCA: These tools assist in gathering metadata.
    • Google Dorking (or Google Hacking) uses advanced search operators to find specific information or vulnerabilities on websites.
    • recon-ng is a full-featured reconnaissance framework designed for web-based open-source reconnaissance.
    • FOCA (Fingerprinting Organizations with Collected Archives) is a tool used to find metadata and hidden information in documents.