If you have found sql injection attacks to be confusing and are preparing for oscp but your manual sql injection part is not clear,I am sure this blog will help you.These are the resources which i have personally used to clear Manual Sql injection.I will not cover any automated tool like sqlmap which is out of usage for oscp exam.This blog is a guide for step by step resources which you can use to clear the topic.
Until you know basic SQL syntax, you will not understand any of the attacks.Start with this video
Portswigger labs contains currently the best free labs and materials to cover all types of web attacks.It assumes you have zero knowledge
You will find that the difficulty keeps increasing and i will Highly suggest you to watch Rana Khalil’s youtube tutorials where she solves every lab of sql injection of Portswigger labs.This is the main resource where you will learn most of the stuff including Blind sql injection,Union based , time based, boolean based all manually without any tool all from scratch.
https://www.youtube.com/watch?v=X1X1UdaC_90&list=PLuyTk2_mYISItkbigDRkL9BFpyRenqrRJ
This is for more Practice. You can always watch videos for solution.
LINK TO REDTIGER LABS- redtiger.labs.overthewire.org/
(This is a very less known but really fun sql injection lab with 10 levels.Try solving till level 7)
Level 14, 15, 17 of Natas which is a type of online CTF contains SQL injection vulnerability.For reference you are suggested to watch the solution by Chris Dale who is a highly experienced Pentester, a SANS Instructor and a good friend of mine.His way of teaching is amazing and you can also try solving the complete Natas Ctf if you wish to.
This is for extra knowledge(beyond oscp). Now since you are familiar with the topic,you can read some sql injection Reports from Books like Web Hacking 101.Or even find many poc videos online.There are many other vulnerable platforms to practice too, like OWASP Juice Shop.Any many ctfs as well.
I hope you found this article super helpful and if you find any other useful resources, feel free to comment it down below.
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