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Passive Information Gathering.md

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Passive Information Gathering

Google Hacking

  • finds all sites that require user input vulnerable to SQL injection
  • Visit Google Hacking Database for more SQL queries.
S.No Google Hacking Commands Output
1. inurl : "index.php?id=" finds out links that ends with "index.php?id=";
e.g https://www.atmarine.fi/?id=2
2. inurl:"/fuel/login" Pages containing login pages;
http://lcp.loctell.com/dy-fuel/login
3. inurl:users.json + "username" Pages containing password;
https://github.com/get/homeslice/blob/master/users.json

Nikto Basics

  • Nikto is a popular web scanner software.
  • This testing service can be used to test a Web Site, Virtual Host and Web Server for known security vulnerabilities and mis-configurations.
  • Below is a command to scan a particular IP-address -
run nikto
provide <target-host/IP-address>
nikto -h <target-host/IP-address>

EmailHarvester

  • EmailHarvester tool to retrieve Domain email addresses from Search Engines.
S.No EmailHarvester commands Description
1. ./EmailHarvester.py -d example.com -e google Search in Google
2. ./EmailHarvester.py -d example.com -e googleplus Search in site using Search engines
3. ./EmailHarvester.py -d example.com -e all -r twitter,ask Search in all engines/sites but exclude some

Shodan Search Engine

Shodan is a search engine that lets user find specific types of computers connected to internet using variety of filters.

DNS Zone transfers with Dig

  • Dig command reads the /etc/resolv.conf file and querying the DNS servers listed there. The response from the DNS server is what dig displays.
  • Using dig (domain information groper), attackers can make use of replication for primary and secondary DNS servers in order to be synchronized.
  • From secondary server, attackers can ask for data from primary server.
  • Primary server answers with copy of database which has IP-address and host names.
  • If attackers get hold of all your DNS records, they can use those records to replicate DB across group of DNS servers
  • Sample commands -
S.No Dig commands Description
1. dig yahoo.com +short Query Domain “A” Record with +short
2. dig yahoo.com MX Querying MX Record for Domain
3. dig yahoo.com SOA Querying SOA Record for Domain