ULTIMATE COURSE Stealing Data with Wireshark: A Guide to Network Packet Sniffing

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Steps to Capture and Analyze Network Traffic with Wireshark

1. Install Wireshark:
   • Download and install Wireshark from the official website. It is available for Windows, macOS, and Linux.
     
2. Select Network Interface:
   • Open Wireshark and select the network interface you want to capture traffic from. This could be a wired or wireless interface.
     
3. Start Capture:
   • Click on the shark fin icon or press 
     Code:

     Ctrl+E
      to start capturing packets. Wireshark will begin displaying packets in real-time.
     
4. Apply Filters:
   • Use display filters to narrow down the traffic to only what you need. For example, to focus on HTTP traffic, you can use the filter 
     Code:

     http
     .
     
   • Other useful filters include 
     Code:

     dns
      for DNS traffic, 
     
     Code:

     tcp
      for TCP traffic, and 
     
     Code:

     udp
      for UDP traffic.
     
5. Capture Sensitive Information:
   • Look for packets containing sensitive information, such as login credentials, session cookies, or personal data. These are often found in HTTP POST requests or other unencrypted protocols.
     
   • Example filter for HTTP login traffic: 
     Code:

     http.request.method == "POST"
     .
     
6. Save Capture File:
   • Save the captured packets to a file for later analysis. This allows you to review the data offline and share it with others if needed.
     
7. Analyze Captured Data:
   • Use Wireshark’s analysis tools to inspect the captured packets. This can include following TCP streams, examining packet details, and extracting sensitive information.
     
   • To follow a TCP stream, right-click on a packet and select 
     Code:

     Follow
      > 
     
     Code:

     TCP Stream
     . This will show you the entire conversation between two endpoints.
     
8. Extract Files:
   • Wireshark can extract files from captured traffic. Go to 
     Code:

     File
      > 
     
     Code:

     Export Objects
      > 
     
     Code:

     Saved Packets
      to save the extracted files.
     

Examples of Sensitive Information You Can Capture

• Login Credentials: Capture usernames and passwords sent over unencrypted HTTP connections.
  
• Session Cookies: Intercept session cookies to hijack user sessions and gain unauthorized access to web applications.
  
• Personal Data: Capture personal information such as names, addresses, and phone numbers transmitted over the network.
  
• Financial Information: Steal credit card numbers, bank account details, and other financial data sent over unsecured connections.
  

Tips for Successful Data Theft

• Use a Comprehensive Wordlist: For brute-force attacks, a large and comprehensive wordlist increases your chances of success.
  
• GPU Acceleration: Tools like Hashcat can utilize GPU power to speed up the cracking process.
  
• Practice: The more you practice, the better you’ll get. Try capturing and analyzing traffic on various networks to improve your skills.
  

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