Hacking website using SQL Injection -step by step guide
Before we see what SQL Injection is. We should know what SQL and Database are.Database:Database is collection of data.In website point of view, database is used for storing user ids,passwords,web pagedetails and more.
Some List of Database are:
* DB servers,
* MySQL(Open source),
* MSSQL,
* MS-ACCESS,
* Oracle,
* Postgre SQL(open source),
* SQLite,
SQL:
Structured Query Language is Known as SQL. In order to communicate with the Database ,we are using SQL query. We are querying the database so it is called as Query language.Definition from Complete reference :
Simple Basic Queries for
SQL:Select * from table_name :this statement is used for showing the content of tables including column name.For eg: select * from users;Insert into table_name(column_names,…) values(corresponding values for columns): For inserting data to table.For eg:insert into users(username,userid) values(“BreakTheSec”,”break”); I will give more detail and query in my next thread about the SQL QUERY.
What is SQL Injection?
SQL injection is Common and famous method of hacking at present . Using this method an unauthorized person can access the database of the website. Attacker can get all details from the Database.
What an attacker can do?
* ByPassing Logins
* Accessing secret data
* Modifying contents of website
* Shutting down the My SQL server Now let’s dive into the real procedure for the
SQL Injection.Follow my steps.
Step 1: Finding Vulnerable Website:Our best partner for SQL injection is Google. We can find the Vulnerable websites(hackable websites) using Google Dork list. google dork is searching for vulnerable websites using the google searching tricks. There.is lot of tricks to search in google. But we are going to use “inurl:” command for finding the vulnerable websites.
Some Examples:
inurl:index.php?id=
inurl:gallery.php?id=
inurl:article.php?id=
inurl:pageid=
How to use?
copy one of the above command and paste in the google search engine box.Hit enter.You can get list of web sites.We have to visit the websites one by one for checking the vulnerability.So Start from the first website.
Note: if you like to hack particular website,then try this: site:www.victimsite.com dork_list_commands
for eg:
Step 2: Checking the Vulnerability:Now we should check the vulnerability of websites. In order to check the vulnerability ,add the single quotes (‘) at the end of the url and hit enter. (No space between the number and single quotes)
For eg:
If the page remains in same page or showing that page not found or showing some other web pages. Then it is not vulnerable.If it showing any errors which is related to sql query,then it is vulnerable. Cheers..!!
For eg:
Step 3: Finding Number of columns:
Now we have found the website is vulnerable. Next step is to find the number of columns in the table.For that replace the single quotes (‘) with “order byn” statement.(leave one space between number and order byn statement) Change the n from 1,2,3,4,,5,6,…n.
Until you get the error like “unknown column “.
For eg:
change the number until you get the error as “unknown column”
if you get the error while trying the “x”th number,then no of column is “x-1″.
I mean:
so now x=8 , The number of column is x-1 i.e, 7.
Sometime the above may not work. At the time add the “–” at the end of the statement.
For eg:
Step 4: Displaying the Vulnerable columns:
Using “union selectcolumns_sequence” we can find the vulnerable part of the table. Replace the “order by n” with this statement.
And change the id value to negative(i mean id=-2,must change,but in some website may work without changing).
Replace the columns_sequence with the no from 1 to x-1(number of columns) separated with commas(,).
For eg:
if the number of columns is 7,then the query is as follow:
If the above method is not working then try this:
t will show some numbers in the page(it must be less than ‘x’ value, i mean less than or equl to number of columns).Like this:
Now select 1 number.It showing 3,7. Let’s take the Number
3.Step 5: Finding version,database,userNow replace the 3 from the query with “version()”
For eg:
It will show the version as 5.0.1 or 4.3. something like this.
Replace the version() with database() and user() for finding the database,user respectively.
For eg:
If the above is not working,then try this:
Step 6:
Finding the Table Nameif the version is 5 or above. Then follow these steps. Now we have to find the table name of the database. Replace the 3 with “group_concat(table_name) and add the “from information_schema.tables where table_schema=database()”
For eg:
Now it will show the list of table names. Find the table name which is related with the admin or user.
if the version is 4 or some others, you have to guess the table names. (user, tbluser). It is hard and bore to do sql inection with version 4.
Step 7: Finding the Column Name Now replace the “group_concat(table_name) with the “group_concat(column_name)”Replace the “from information_schema.tables where table_schema=database()–” with “FROM information_schema.columns WHERE table_name=mysqlchar–Now listen carefully ,we have to find convert the table name to MySql CHAR() string and replace mysqlchar with that .Find Mysql Char() for Tablename:
First of all install the Hack Bar addon:
Now select
sql->Mysql->MysqlChar()
This will open the small window ,enter the table name which you found. i am going to use the admin table name.
click ok Now you can see the CHAR(numbers separated with commans) in the Hack toolbar.
Copy and paste the code at the end of the url instead of the “mysqlchar”
For eg:
Now it will show the list of columns.
like
admin,password,admin_id,admin_name,admin_password,active,
id,admin_name,admin_pas s,admin_id,admin_name,admin_password,
ID_admin,admin_username,username,password..
etc..
Now replace the replace group_concat(column_name) with group_concat(columnname,0x3a,anothercolumnname).
Colum nname should be replaced from the listed column name.another column name should be replace from the listed column name.
Now replace the ” from information_schema.columns where table_name=CHAR(97, 100, 109, 105, 110)” with the “from table_name”
For eg:
Sometime it will show the column is not found.
Then try another column namesNow it will Username and passwords.
Enjoy..!!cheers..!!If the website has members then jock-bot for you. You will have the list of usernames and password.
Some time you may have the email ids also,enjoy you got the Dock which can produce the golden eggs.
Step 8: Finding the Admin Panel:Just try with url like:
If you have luck ,you will find the admin page using above urls. or try this list .
Here is the list of admin urls:
I 
Note:
This is just for educational purpose only. Discussing or Reading about thief techniqueis not crime but implementing.
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