WEBSITE HACKING WITH DOT NET NUKE EXPLOIT

In this tutorial I will tell you how hackers use a simple dot net nuke exploit to hack a website, Now the exploit I am talking about is found in hundreds and hundreds on DNN applications and it allows the hacker to upload an image on your server, This type of attack is also called one way Hacking and at the end of article I have also posted some countermeasures to help you defend your self against these kinds of attack.

Google Dork

A google dork is an act of using google provided search terms to obtain a specific result and this DNN vulnerability occurs only in those websites which have “/portals/0″ in their navigation, So goahead and search for inurl:”/portals/0″ where inurl asks the google to display all the url’s who have /portals/0 in their navigation
1.Lets say the vulnerable website is:
 www.vulnerablewebsite.com/portals/0
2.Now we will just add Providers/HtmlEditorProviders/Fck/fcklinkgallery.aspx after the url so http://www.vulnerablewebsite.com/portals/0 will become http://www.vulnerablewebsite.com/portals/0Providers/HtmlEditorProviders/Fck/fcklinkgallery.aspx
3.Now a website is vulnerable to this type of attack you will get a similar windows like the below one:

4.Next enter the following Javascript in the address bar:
javascript:__doPostBack(‘ctlURL$cmdUpload’,”)

What this javascript will do is that it will enable us to upload our image to the server:

5.The hacker could upload any image on victims website.
Countermeasures
1.The easiest method is to rename your fcklinkgallery to some thing else but it will not prevent this attack, but you can protect it from script kiddie’s in this way, A skilled hacker can easily find the renamed file by using some Footprinting methods
2.Another way to prevent this attack is to upgrade to IIS 7 or higher and a DNN version of 4.9.4 or higher

LEARN WEBSITE HACKING AND SECURITY WITH DVWA TOOLS

Lots of readers often ask me How can I be good at website hacking and web application security, The thing is that even if you have an idea of how some popular website application attack work but still you need a safe environment to practice what you have learned because you are not allowed to access any website even for testing purposes unless and until you are not authorized to do that, This is where Damn vulnerable web app(DVWA) comes into play
Basically Damn vulnerable web app(DVWA) PHP/MySQL web app which is Damn vulnerable, DVWA web app allows you to learn and practice web application attacks in a safe environment, It’s latest version is DVWA 1.7.

Vulnerabilities

• SQL Injection
• XSS (Cross Site Scripting)
• LFI (Local File Inclusion)
• RFI (Remote File Inclusion)
• Command Execution
• Upload Script
• Login Brute Force
• Blind SQL Injection 

And much more.

Official warning

It should come as no shock..but this application is damn vulnerable! Do not upload it to your hosting provider’s public html folder or any working web server as it will be hacked. It’s recommend that you download and install XAMP onto a local machine inside your LAN which is used solely for testing.