Hacking Web Applications

Hacking web applications involves identifying and exploiting vulnerabilities in web-based software. Web applications are prime targets because they're publicly accessible and often contain sensitive data. Common attack vectors include: 1. SQL Injection: Manipulating input fields to execute database commands, potentially accessing unauthorized data or gaining system control. 2. Cross-Site Scripting (XSS): Injecting malicious scripts that execute when users visit a compromised page, stealing cookies or session data. 3. Cross-Site Request Forgery (CSRF): Tricking authenticated users into performing unwanted actions on websites they're logged into. 4. Broken Authentication: Exploiting weak credential management to compromise user accounts. 5. Security Misconfigurations: Leveraging improperly configured web servers, databases, or application platforms. 6. Sensitive Data Exposure: Targeting inadequately protected sensitive information like passwords or financial data. 7. XML External Entity (XXE) Attacks: Exploiting vulnerable XML processors to access server files or perform server-side request forgery. Penetration testers use tools like Burp Suite, OWASP ZAP, SQLmap, and Metasploit to identify and exploit these vulnerabilities. The testing process typically involves: - Reconnaissance: Gathering information about the target application - Scanning: Finding entry points and vulnerabilities - Exploitation: Attempting to compromise the application - Maintaining Access: Establishing persistence (for authorized tests) - Covering Tracks: Removing evidence of intrusion Defense strategies include input validation, output encoding, using parameterized queries, implementing proper authentication and session management, keeping systems updated, and applying the principle of least privilege. Responsible vulnerability testing follows strict ethical guidelines and legal boundaries, requiring proper authorization and scope definition, and aims to improve security rather than cause harm.

Hacking web applications involves identifying and exploiting vulnerabilities in web-based software. Web applications are prime targets because they're publicly accessible and often contain sensitive …

Concepts covered: Web App Security, Web App Concepts, Web API, Webhooks, and Web Shell, Attack Session Management Mechanism, Bypass Client-Side Controls, Web App Threats, Web App Hacking Methodology, Footprint Web Infrastructure, Analyze Web Applications, Attack Authentication Mechanism, Attack Authorization Schemes, Attack Access Controls, Perform Injection Attacks, Attack Application Logic Flaws, Attack Shared Environments, Attack Database Connectivity, Attack Web App Client, Attack Web Services