Basic to Advanced WAF Bypassing Methods « G.N.A. Team. Today I am going to show you how to bypass Web Application Firewalls (WAF).
I will demonstrate from the Simpliest and most Basic Techniques to the Most Advanced ones! NOTE: SQL Injection is not demonstrated here! If you don’t know SQL Injection, read this first… What is WAF? WAF stands for Web Application Firewall. Let’s Begin! The SQL Injection Knowledge Base. Default Databases Testing Injection False means the query is invalid (MySQL errors/missing content on website) True means the query is valid (content is displayed as usual) Given the query SELECT * FROM Table WHERE id = '1';
Website Hacked By Bitire215. Vulnerability analysis, Security Papers, Exploit Tutorials. Hacking website using SQL Injection -step by step guide. What is SQL Injection?
SQL injection is one of the popular web application hacking method. Using the SQL Injection attack, an unauthorized person can access the database of the website. Attacker can extract the data from the Database. What a hacker can do with SQL Injection attack? * ByPassing Logins * Accessing secret data * Modifying contents of website * Shutting down the My SQL server So, here we go. Step 1: Finding Vulnerable Website: To find a SQL Injection vulnerable site, you can use Google search by searching for certain keywords. Some Examples: inurl:index.php? Here is the huge list of Google Copy one of the above keyword and paste in the google. Note:if you like to hack particular website,then try this: site:www.victimsite.com dork_list_commands for eg: site:www.victimsite.com inurl:index.php? Step 2: Checking the Vulnerability: Now let us check the vulnerability of the target website.
For eg: If the page remains in same page or showing that page not found, then it is not vulnerable. [SQLi] Union Select/Union All Select - Sup3r C0w. WAF Bypass: SQL Injection (forbidden or not ?) This is such a wide Topic, but today were going to examine WAF bypas and SQL injection What is a WAF?
A WAF is a Web Application Firewall used to filter certain malicious requests and/or keywords. Is a WAF a safe way to protect my Website? Well, thats a tough question. A WAF alone will not protect your website if your code is vulnerable, but a WAF and secure coding will. A WAF should be used as a tool in your tool shed, but you should never count on a WAF to keep attackers out because most, if not all WAF’s can be bypassed with the time and brains.Today,we will take a look into how exactly to do this 1)Comments: SQL comments are a blessing to us SQL injectors. 2)Case Changing: Some WAF’s will filter only lowercase attacks As we can see we can easily evade this by case changing: Possible Regex filter: /union\sselect/g.
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SQLi Tutorial. December « 2010 « Reiners’ Weblog. This week I presented my experiences in SQLi filter evasion techniques that I have gained during 3 years of PHPIDS filter evasion at the CONFidence 2.0 conference.
You can find the slides here. For a quicker reference you can use the following cheatsheet. More detailed explaination can be found in the slides or in the talk (video should come online in a few weeks). Basic filter Comments ‘ or 1=1# ‘ or 1=1– - ‘ or 1=1/* (MySQL < 5.1) ' or 1=1;%00 ' or 1=1 union select 1,2 as ` ' or#newline 1='1 ' or– -newline 1='1 ' /*! Prefixes + – ~ !
Operators ^, =, ! Whitespaces %20 %09 %0a %0b %0c %0d %a0 /**/ ‘or+(1)sounds/**/like“1“–%a0- ‘union(select(1),tabe_name,(3)from`information_schema`. Strings with quotes SELECT ‘a’ SELECT “a” SELECT n’a’ SELECT b’1100001′ SELECT _binary’1100001′ SELECT x’61′ Strings without quotes ‘abc’ = 0×616263 Aliases select pass as alias from users select pass aliasalias from users select pass`alias alias`from users Function filter. SQL Injection - Hakipedia. SQL Injection is one of the more popular application layer hacking techniques that is used in the wild today.
It is a trick that exploits poorly filtered or not correctly escaped SQL queries into parsing variable data from user input. The idea behind SQL injection is to convince the SQL application (whether MySQL, MSSQL, PostgreSQL, ORACLE etc) to run an SQL string that was not premeditated. Severity Relatively High Exploit Likeliness Moderate.