> For the complete documentation index, see [llms.txt](https://moharat.gitbook.io/cylabs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://moharat.gitbook.io/cylabs/cyber-security-assessment/exploitation/attack-surface-and-target-prioritization/running-services.md).

# Running Services

#### Prioritizing Target Attacks in Penetration Testing

**Analyzing Running Services**

1. **Identify Services**: Enumerate running services on the target system using tools like Nmap.
2. **Assess Vulnerabilities**: Determine known vulnerabilities associated with these services using databases like CVE or vulnerability scanning tools like Nessus.
3. **Evaluate Criticality**: Consider the criticality of each service based on its role in the organization’s operations.

**Suggested Tools and Usage**

1. **Nmap**:
   * **Usage**: Scans for open ports and services.
   * **Command**: `nmap -sV target_ip`
   * **Purpose**: Identifies open ports and associated services, aiding in the initial enumeration.
2. **Nessus**:
   * **Usage**: Performs comprehensive vulnerability assessments.
   * **Command**: Initiate a scan via Nessus web interface.
   * **Purpose**: Identifies vulnerabilities and provides detailed reports on each finding.
3. **Metasploit**:
   * **Usage**: Exploits identified vulnerabilities to assess impact.
   * **Command**: `msfconsole`, followed by specific exploit commands.
   * **Purpose**: Verifies the exploitability of vulnerabilities and helps prioritize based on exploit success.
4. **Nikto**:
   * **Usage**: Scans web servers for vulnerabilities.
   * **Command**: `nikto -h target_ip`
   * **Purpose**: Identifies web server misconfigurations, outdated software, and other vulnerabilities.
5. **OpenVAS**:
   * **Usage**: Conducts extensive vulnerability scanning.
   * **Command**: Initiate a scan via OpenVAS web interface.
   * **Purpose**: Provides a comprehensive analysis of vulnerabilities across the network.

#### Steps for Prioritizing

1. **Critical Services**: Focus on services critical to business operations or containing sensitive data.
2. **High-Severity Vulnerabilities**: Prioritize vulnerabilities with high CVSS scores.
3. **Exploit Availability**: Target vulnerabilities with known exploits.
4. **Exposure**: Consider external exposure and ease of exploitation.

#### References

* [CISA Cybersecurity Best Practices](https://www.cisa.gov/cybersecurity-best-practices)
* [NIST SP 800-115: Technical Guide to Information Security Testing and Assessment](https://csrc.nist.gov/publications/detail/sp/800-115/final)
* [Microsoft Security Vulnerability Management](https://docs.microsoft.com/en-us/microsoft-365/security/defender-endpoint/vulnerability-management?view=o365-worldwide)

By using these tools and methodologies, penetration testers can effectively prioritize targets, ensuring that the most critical vulnerabilities are addressed first.