Saturday, June 22, 2024

Web Application Pentesting with Manual SQL Injection – Integer Based

Today we will perform manual SQL injection with an integer-based method for the MySQL database. I hope the last article on error-based string injection is useful to everyone, especially beginners. Now I will quickly drive into yet another writing for SQL injection with the integer-based method.


  • Beginners can use this website to practice skills for SQL injection
  • To Access the LAB Click Here

STEP 1: Breaking the Query

  • Visiting the website 
  • let us add & check a single quote to the existing URL to check whether the website is vulnerable to SQL Injection by adding′
  • Here we are trying to break the query to receive error messages with the database so that we can balance the query.
  • But we are not getting error statements with respect to our input, which means a single quote as input.
  • Now I understand that when the input string is not getting an error with the database, let me try to fix it without a single quote.
  • The above figure shows that the website is getting fixed & we have joined the query with no errors with the integer method. So this is called SQL Injection With Integer Based Method.

STEP 2: Finding the Backend Columns

  • It is time to have a conversation with the database to find the number of columns. To enumerate columns we can use order by command.
  • Let me ask the database for any number so that I can check the column’s availability in the database.
SQL injection
  • Above figure, I have asked for 4 columns, but it throws an error.
  • Keep asking the database, let me ask for 3 columns !!!
SQL injection
  • The above Figure shows no SQL errors, Yes! we have only 3 columns

STEP 3: Finding the Backend Table & Table Names

  • Let us ask the database its table path with the command union all select 
SQL injection
  • The above figure shows the execution of the union all select gives the path of tables.2 & 3 the path of the table.
SQL injection
  • The above figure shows the execution of database() & version() on the path of tables 2 & 3 providing us with the database name and version.
  • So here the database name is accurate and the version is 5.1.73-0ubuntu0.10.04.1

STEP 4: Dumping Database Tables

  • Group_concat() is the function that returns a string with the concatenated non-NULL value from a group.
  • So we can use this Function to list all Tables from the database.
  • In Addition, we can use Information_Schema to view metadata about the objects within a database
SQL injection
  • The Above Figure shows the dump of all tables as carts,categ,featured,guestbook,pictures,products,users

STEP 5: Dumping all Data in Columns of Tables

  • Here I will dump for users in the table
SQL injection
  • The Above Figure shows the dump of all columns of tables contain uname,pass,cc,address,email,name,phone,cart.

STEP 6: Dumping all Usernames & passwords

  • Here we can dump all usernames & passwords in the database.
  • Here we got the username as test and password as test !!!!
  • practice and try to dump all columns of tables containing cc, address, email, name, phone, cart. Happy Hacking !!!

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