Network security

Imagine for a moment that you are a hacker, an ethical one. You are called upon by law enforcement to hack into the network of a business known to be engaged in criminal activity for financial gain as its primary activity. Assume you are not to be concerned with any political aspects of the job and that your actions are legal and ethically justified.

This nefarious business takes its own security seriously and, therefore, has implemented several forms of network security, including firewalls, web proxies for its web gateways, and VPNs for remote users. You also know that this business, much like any normal corporation, rents several floors of office space to accommodate between 100 and 200 employees. Also, imagine that the business’s entire network topology is located on-site. Your goal is to infiltrate their security to find evidence of illegal activities in the local MSQL database. You must remain anonymous and operate within the parameters of the law.

Explain your method of attack and operation within the reasonable parameters of the law, citing specific, credible sources that support the method of attack and operation.
Describe a specific malware, social engineering, or other type of attack you would deploy to achieve your desired goals, citing specific, credible sources that support deployment of the attack.
Identify effective techniques for concealing executables and specific tools used for each stage of the attack.
Develop a plan to overcome expected hurdles your attack must overcome to be successful, citing specific, credible sources that support the plan.
Develop an anonymizing strategy, supported by specific, credible sources, that creates a false trail and minimizes the risk of detection.
Cite each source listed on your source page at least on

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Sample Answer

 

 

 

Method of Attack and Operation:

Given the target’s security measures (firewalls, proxies, VPNs), a direct attack on the network perimeter would be challenging. Therefore, a more targeted approach is necessary.

  1. Social Engineering:

    • Phishing: Craft a highly targeted phishing email, mimicking an internal communication or a legitimate business partner. This email could contain a malicious link or attachment.
      • Source: “Social Engineering: The Art of Human Hacking” by Christopher Hadnagy. This book provides in-depth knowledge on social engineering techniques and their applications.

 

Full Answer Section

 

 

 

 

  1. Exploiting Human Factors:

    • Tailgating: If possible, attempt physical access to the building by “tailgating” behind an employee. Once inside, opportunities for Wi-Fi sniffing, data exfiltration via removable media, or even physical access to workstations may arise.

Malware Deployment:

  • Malicious Document: The phishing email could contain a malicious document (e.g., Word document with embedded macros) that, when opened, executes malware on the victim’s computer.
    • Malware Choice: A sophisticated malware like Metasploit could be used. Metasploit is a penetration testing framework that provides a wide range of exploits, payloads, and auxiliary modules for various operating systems.

Concealing Executables:

  • Steganography: Embed the malicious code within seemingly harmless files like images or audio files.
  • Obfuscation: Modify the malware code to make it difficult for antivirus software to detect.
  • Encryption: Encrypt the malicious payload to evade detection by intrusion detection systems.

Overcoming Hurdles:

  • Bypassing Firewalls:
    • Port Scanning: Utilize tools like Nmap to identify open ports and potential vulnerabilities in the firewall.
    • Protocol Spoofing: Attempt to circumvent firewall rules by spoofing legitimate protocols.
  • Evading Intrusion Detection Systems (IDS):
    • Low and Slow Attacks: Conduct attacks slowly and gradually to avoid triggering IDS alerts.
    • Encrypting Traffic: Encrypt network traffic to evade detection by network-based intrusion detection systems.
  • Antivirus Evasion:
    • Polymorphism: Use polymorphic malware that changes its form with each infection, making it difficult for antivirus software to detect.
    • Rootkit Techniques: Use rootkit techniques to hide the malware from the operating system and antivirus software.

Anonymizing Strategy:

  • Tor Network: Utilize the Tor network to anonymize internet traffic and mask the origin of the attack.
    • Source: “Tor: The Second Edition” by Roger Dingledine, Nick Mathewson, and Paul Syverson. This book provides a comprehensive overview of the Tor network and its security implications.
  • Virtual Private Networks (VPNs): Use multiple VPNs to hop between different networks, further obscuring the origin of the attack.
  • Disposable Infrastructure: Use disposable infrastructure, such as temporary email addresses, virtual machines, and disposable SIM cards, to minimize traceability.

Disclaimer:

This information is provided for educational purposes only and should not be used for any illegal activities. Ethical hacking requires proper authorization and should only be conducted within legal and ethical boundaries.

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