One Article Review
| Source |  AlienVault Lab Blog |
|---|---|
| Identifiant | 8471442 |
| Date de publication | 2024-03-27 10:00:00 (vue: 2024-03-27 16:08:28) |
| Titre | Techniques avancées de numérisation NMAP Advanced Nmap Scanning Techniques |
| Texte | The content of this post is solely the responsibility of the author. AT&T does not adopt or endorse any of the views, positions, or information provided by the author in this article.
Beyond its fundamental port scanning capabilities, Nmap offers a suite of advanced techniques designed to uncover vulnerabilities, bypass security measures, and gather valuable insights about target systems. Let\'s take a look at these techniques:
1. Vulnerability Detection
Syntax: nmap -sV --script=vulners
Nmap\'s vulnerability detection feature, facilitated by the \'vulners\' script, enables users to identify outdated services susceptible to known security vulnerabilities. By querying a comprehensive vulnerability database, Nmap provides valuable insights into potential weaknesses within target systems.
2. Idle Scanning
Syntax: nmap -sI
Idle scanning represents a stealthy approach to port scanning, leveraging a "zombie" host to obfuscate the origin of scan requests. By monitoring changes in the zombie host\'s IP identification number (IP ID) in response to packets sent to the target, Nmap infers the state of the target\'s ports without direct interaction.
3. Firewall Testing (Source Port Spoofing)
Syntax: nmap --source-port
This technique involves testing firewall rules by sending packets with unusual source ports. By spoofing the source port, security professionals can evaluate the effectiveness of firewall configurations and identify potential weaknesses in network defenses.
4. Service-Specific Probes (SMB Example)
Syntax: nmap -sV -p 139,445 --script=smb-vuln*
Nmap\'s service-specific probes enable detailed examination of services, such as the Server Message Block (SMB) protocol commonly used in Windows environments. By leveraging specialized scripts, analysts can identify vulnerabilities and assess the security posture of target systems.
5. Web Application Scanning (HTTP title grab)
Syntax: nmap -sV -p 80 --script=http-title
Web application scanning with Nmap allows users to gather information about web servers, potentially aiding in vulnerability identification and exploitation.
By analyzing HTTP response headers, Nmap extracts valuable insights about target web applications and server configurations.
Nmap Scripting Engine:
One of the standout features of Nmap is its robust scripting engine (NSE), which allows users to extend the tool\'s functionality through custom scripts and plugins. NSE scripts enable users to automate tasks, perform specialized scans, gather additional information, and even exploit vulnerabilities in target systems.
nmap --script-help scriptname Shows help about scripts. For each script matching the given specification, Nmap prints the script name, its categories, and its description. The specifications are the same as those accepted by --script; so, for example if you want help about the ssl-enum-ciphers script, you would run nmap --script-help ssl-enum-ciphers
Users can leverage existing NSE scripts or develop custom scripts tailored to their specific requirements. |
| Envoyé | Oui |
| Condensat | 139 445 ability about accepted additional adopt advanced against aiding allows analysts analyzing any application applications approach are article assess assessment at&t author automate battle beyond block bypass bypassing can capabilities categories changes ciphers command: commonly companion compliance comprehensive configurations content continues custom cybersecurity database defenses description designed detailed detect detection develop direct does each effectively effectiveness emerging empower enable enables endorse engine engine: enhance ensuring enum environments ethical ethically evaluate even evolve examination example existing exploit exploitation extend extracts facilitated feature features firewall following from functionality fundamental gather given grab guidelines headers help host however http identification identify idle imperative infers information infrastructures insights interaction involves its known landscape legal let leverage leveraging look mastering matching measures message might mitigate monitoring name network networked nmap not nse number obfuscate offers one ongoing origin outdated overall packets perform plugins port ports positions post posture potential potentially prints probes professionals protect protocol provided provides querying reconnaissance remains represent represents requests requirements response responsibility responsibly robust rules run same scan scanning scans script script; script=http script=smb script=vulners scripting scriptname scripts security sending sent server servers service services shows smb solely sophisticated source specialized specific specification specifications spoofing ssl standout state steadfast stealthy strengthening such suite susceptible syntax: systems tailored take target tasks technique techniques techniques: testing thereby these those threats through title tool toolkit uncover uncovering unusual use used users using valuable views vuln vuln* vulnerabilities vulnerability vulners want weaknesses web which windows within without would zombie |
| Tags | Tool Vulnerability Threat |
| Stories | |
| Notes | ★★★ |
| Move | 
|
L'article ne semble pas avoir été repris aprés sa publication.
L'article ne semble pas avoir été repris sur un précédent.