Ports Galore

This flag shall test your knowledge of networking tools such as Nmap and Netcat as well as your ability to communicate with servers using server-client communication.

The Tools:

Nmap: Nmap is a versatile network scanning tool used for discovering hosts and services on a computer network. It sends packets to target hosts and analyzes the responses to determine which ports are open, what services are running, and various other details about the network. Nmap allows you to

Netcat (nc): Netcat, often abbreviated as nc, is a networking utility used for reading from and writing to network connections. It can act as a simple TCP or UDP server or client, allowing you to connect to ports on remote systems, send and receive data, and much more.

Important Note:

• Take your time to understand how Nmap and Netcat work. Experiment with different options and commands to gather information and interact with services.
• Be respectful and responsible in your exploration. Do not perform any unauthorized actions or attacks against the server.
• If you encounter any issues or need assistance, feel free to ask for hints or clarification.

The Challenge

Your objective is to leverage Nmap to identify the open ports on a remote server and use Netcat to interact with a mysterious service running on one of those ports to find the flag.