Começo a usar o SQLMAP no momento 01:02:55 da aula.
O SQLMAP "automatiza" todo o processo porém acho importante você entender o fundamento por trás.



CRUD em PHP: https://www.devmedia.com.br/crud-com-php-pdo/28873

PortSwigger:https://portswigger.net/web-security/sql-injection

MySQL SQL Injection Cheat Sheet: https://pentestmonkey.net/cheat-sheet/sql-injection/mysql-sql-injection-cheat-sheet

SQL injection cheat sheet: https://portswigger.net/web-security/sql-injection/cheat-sheet

SQLMap Cheat Sheet: https://thedarksource.com/sqlmap-cheat-sheet/