🦑🔍 Mastering DNS & DHCP Penetration Testing: Protect Your Network’s Core!

DNS (Domain Name System) and DHCP (Dynamic Host Configuration Protocol) are foundational to network operations. However, their vulnerabilities can make them prime targets for cyberattacks. Understanding how to test and secure these protocols is a critical skill for any cybersecurity professional.

Common DNS Vulnerabilities & Attacks:

1️⃣ DNS Spoofing/Poisoning: Alters DNS responses to redirect users to malicious websites.
2️⃣ DNS Tunneling: Exfiltrates data or establishes backdoors via DNS queries.
3️⃣ Cache Poisoning: Manipulates DNS cache entries to disrupt or redirect traffic.
4️⃣ Zone Transfer Exploitation: Misuses misconfigured servers to access sensitive DNS records.

Common DHCP Vulnerabilities & Attacks:

1️⃣ DHCP Starvation Attack: Exhausts IP leases, causing network disruptions.
2️⃣ Rogue DHCP Server Attack: Deploys unauthorized DHCP servers to provide malicious configurations.
3️⃣ Man-in-the-Middle (MITM) Attacks: Exploits DHCP to intercept sensitive data.
4️⃣ IP Address Spoofing: Mimics authorized devices to gain network access.

Steps to Perform DNS & DHCP Penetration Testing:

1️⃣ Reconnaissance:
• Use tools like Dig, DNSRecon, and Fierce to identify DNS configurations.
• Scan for active DHCP servers using DHCPig or Yersinia.

2️⃣ Vulnerability Analysis:
• Check for weak configurations in DNS records (e.g., open zone transfers).
• Identify rogue DHCP servers or insufficient IP allocations.

3️⃣ Exploitation:
• Simulate DNS Spoofing or Cache Poisoning to test resilience.
• Perform DHCP Starvation or Rogue Server attacks in a controlled environment.

4️⃣ Remediation:
• Harden DNS configurations (disable unused services, restrict zone transfers).
• Enable DHCP snooping and IP source guard to prevent rogue DHCP servers.

Pro Tip for Defenders:
• Implement DNSSEC (Domain Name System Security Extensions) to validate DNS responses.
• Regularly monitor and test DHCP and DNS servers for vulnerabilities.

📌 Remember: Always test ethically with proper authorization!

🔐 DNS and DHCP are the backbone of every network. Securing them not only prevents breaches but ensures smooth operations for businesses.

⚡️ #Windows 11 Gets a Much-Needed Webcam Upgrade

https://undercodenews.com/windows-11-gets-a-much-needed-webcam-upgrade/

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⚡️ A Transatlantic Dream: Musk's Vision for a New York-London Tunnel

https://undercodenews.com/a-transatlantic-dream-musks-vision-for-a-new-york-london-tunnel/

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🦑Cookie stealer which can then be used for session hijacking and Bypassing 2 Factor Authentication:

>> How Does it work?
Big-Papa utilizes malicious javascript code injection...and then makes a GET Request(with cookies) to the Python Web server running on the attacker machine

Note That you need to be man in the middle in order to inject the malicious javascript Code and then steal cookies of the website that the victim is currently visting

For testing purposes copy the Javascript code from the bgp.js file without the script tags and execute in the console of the browser

You can use Bettercap in-order to become man-in-the-middle using bettercap or use arp spoof and then run Big-Papa to inject Javascript

>> For HTTPS?
Big-Papa will work Perfectly against HTTP websites but For HTTPS you can use sslstrip to Downgrade it to HTTP and then utilize Big-Papa

*SSLstrip --> https://github.com/moxie0/sslstrip.git

Still some websites use HTTP and thus their data including Passwords can be read in Clear text but we need to steal cookies in some cases in order to Bypass 2-Factor-Authentication

🄸🄽🅂🅃🄰🄻🄻🄸🅂🄰🅃🄸🄾🄽 & 🅁🅄🄽 :

1️⃣ git clone https://github.com/vrikodar/Big-Papa.git

2️⃣cd Big-Papa

3️⃣chmod +x install.sh

4️⃣ ./install.sh

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🚨 Why Breaches Happen: Uncovering the Hidden Vulnerabilities

https://undercodenews.com/why-breaches-happen-uncovering-the-hidden-vulnerabilities/

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🛡️ Shield Your Etsy Shop: A Guide to Outsmarting Scammers

https://undercodenews.com/shield-your-etsy-shop-a-guide-to-outsmarting-scammers/

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A Glimpse into the Future: Innovation, Challenges, and #AI

https://undercodenews.com/a-glimpse-into-the-future-innovation-challenges-and-ai/

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⚡️ The Wall Street Journal Launches a New Brand Campaign

https://undercodenews.com/the-wall-street-journal-launches-a-new-brand-campaign/

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Climate Change and the Urgent Need for Action

https://undercodenews.com/climate-change-and-the-urgent-need-for-action/

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Useful ?

🚨 A New Stealthy Threat: Borealis Stealer

https://undercodenews.com/a-new-stealthy-threat-borealis-stealer/

@Undercode_News

⚡️ #WhatsApp for #iOS 242580: A New Era for Photo and Video Albums

https://undercodenews.com/whatsapp-for-ios-242580-a-new-era-for-photo-and-video-albums/

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Threads Surges: Daily Active Users Exceed 100 Million

https://undercodenews.com/threads-surges-daily-active-users-exceed-100-million/

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🦑𝗦𝗢𝗣𝘀 (𝗦𝘁𝗮𝗻𝗱𝗮𝗿𝗱 𝗢𝗽𝗲𝗿𝗮𝘁𝗶𝗼𝗻 𝗣𝗿𝗼𝗰𝗲𝗱𝘂𝗿𝗲𝘀) / 𝗣𝗹𝗮𝘆𝗯𝗼𝗼𝗸𝘀 / 𝗥𝘂𝗻𝗯𝗼𝗼𝗸𝘀✨

A playbook, also known as a standard operating procedure (SOP), consists of a set of guidelines to handle security incidents and alerts in the SOC.

Incident response methodologies typically involve creating standard operating procedures (SOPs), playbooks, and runbooks to guide teams through the incident response process.

These gudelines provide easy to use operational incident best practices. These cheat sheets are dedicated to incident handling and cover multiple fields in which a CERT team can be involved.

Source: https://lnkd.in/eudq_jJi
Thanks to Societe Generale

✅Worm Infection: https://lnkd.in/ez-kq98Y
✅Social Engineering: https://lnkd.in/e_FJbxDP
✅Information Leakage: https://lnkd.in/eeN8KX8g
✅Insider Abuse: https://lnkd.in/ep4p_THk
✅Customer Phishing: https://lnkd.in/ekTfY7vz
✅Scam: https://lnkd.in/eUHwG3fF
✅Trademark infringement: https://lnkd.in/e3P3xfeb
✅Phishing: https://lnkd.in/eYTi3RQ8
✅Ransomware: https://lnkd.in/eRkctdQn
✅Large_scale_compromise: https://lnkd.in/eYFF43b4
✅3rd-party_compromise: https://lnkd.in/e8SAu5MT
✅Windows Intrusion: https://lnkd.in/eXCpcx9V
✅Unix Linux lntrusionDetection: https://lnkd.in/eHkm6MMe
✅DDOS: https://lnkd.in/eQ7zZzVt
✅MaliciousNetworkBehaviour: https://lnkd.in/ewVZy2cs
✅Website-Defacement: https://lnkd.in/eraNiHcH
✅WindowsMalwareDetection: https://lnkd.in/ewEx_C6Y
✅Blackmail: https://lnkd.in/eW3zGcPs
✅SmartphoneMalware.pdf: https://lnkd.in/ezjyY4G9

Ref:
@UndercodeCommunity
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EU Slams the Brakes on Russian Cyber Warfare

https://undercodenews.com/eu-slams-the-brakes-on-russian-cyber-warfare/

@Undercode_News