🖲️Vulnerability Scanning

Vulnerability scanning

Vulnerability scanning is a process used to identify security weaknesses in computer systems, networks, and applications. It involves using automated tools to scan for known vulnerabilities, such as outdated software, misconfigurations, and weak passwords. The results help organizations understand where their systems are at risk and take steps to fix these issues before they can be exploited by attackers. This proactive approach is crucial for maintaining a secure IT environment.

Banner Grabbing

• Banner grabbing is an information gathering technique used by penetration testers to enumerate information regarding the target operating system as well as the services that are running on its open ports.

• The primary objective of banner grabbing is to identify the service running on a specific port as well as the service version.

• Banner grabbing can be performed through various techniques:

  • Performing a service version detection scan with Nmap.

  • Connecting to the open port with Netcat.

  • Authenticating with the service (If the service supports authentication), for example; SSH, FTP, Telnet etc.

Few Common tools and techniques to perform banner grabbing include:

• Nmap: Use the following command to perform banner grabbing with Nmap:

  nmap -sV -O --script=banner <Target-IP>

• Netcat (nc): You can utilize Netcat to manually connect to a target IP and port to retrieve banners. The command format is:

  nc <Target-IP> <port>

• Login Attempts: You can also attempt to log in to services with default or known credentials.

Vulnerability Scanning With Nmap Script

There are numerous scripts in Nmap that can assist you in discovering vulnerabilities and enumerating the services running on different ports. You can refer to the Nmap documentation. Additionally, all the Nmap scripts are stored in the directory /usr/share/nmap/scripts.

We have also covered multiple scripts and use cases of Nmap in different sections as per the requirement. A few pages mentioned are below.

💡Assessment Methodologies

🗺️Mapping a Network

🎛️Port Scanning

👣Footprinting & Scanning

🕵️Enumeration

Vulnerability Scanning With Metasploit

The Metasploit Framework is a powerful open-source tool used for developing, testing, and executing exploit code against a remote target. It assists security professionals and penetration testers in identifying vulnerabilities and assessing a system's security. With its vast database of exploits, payloads, and auxiliary modules, Metasploit simplifies the process of identifying and exploiting weaknesses in various software and systems. However, it's crucial to use Metasploit responsibly and legally within authorized environments. For more details you can refer to the following documentation for The Metasploit Framework (MSF) by Rapid7.

💣The Metasploit Framework (MSF)

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Hacker's Mantra:Hackers are people, right? They really are; you know they mow lawns! What’s a hacker documentary? It’s a guy doing his laundry. - Flea