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Hacking For Beginners – Manthan Desai 2010 Step 11:- Now send this file to your friends and see what happens to his/her PC. “Do not use this hacks & trick in any criminal activities like phishing bank websites and please do not destroy any ones account this is only for educational purpose”. w w w . h a c k i n g t e c h . c o . t v Page 146
Hacking For Beginners – Manthan Desai 2010 26. SQL injection for website hacking In this tutorial I will describe how sql injection works and how to use it to get some useful information. First of all: What is SQL injection? It's one of the most common vulnerability in web applications today. It allows attacker to execute database query in url and gain access to some confidential Information etc...( In shortly). 1. SQL Injection (classic or error based) 2. Blind SQL Injection (the harder part) So let's start with some action Step 1:- Check for vulnerability Let's say that we have some site like this http://www.site.com/news.php?id=5 Now to test if is vulnerable we add to the end of url ' (quote), and that would be http://www.site.com/news.php?id=5' so if we get some error like "You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right etc..." Or something similar That means is vulnerable to sql injection :) Step 2:- Find the number of columns To find number of columns we use statement ORDER BY (tells database how to order the result) so how to use it? Well just incrementing the number until we get an error. http://www.site.com/news.php?id=5 order by 1/*
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