Web Application Penetration Testing

  1. Application Logic Testing
    1. Business Logic Vulnerability Identification
      1. Workflow Analysis
        1. Process Flow Mapping
          1. State Transition Validation
            1. Step Sequence Enforcement
            2. Data Validation Logic
              1. Input Boundary Testing
                1. Data Type Validation
                  1. Range and Format Checking
                  2. Authorization Logic Flaws
                    1. Function-Level Access Control
                      1. Data-Level Access Control
                        1. Context-Dependent Authorization
                      2. Common Logic Flaw Patterns
                        1. Race Condition Exploitation
                          1. Time-of-Check Time-of-Use
                            1. Concurrent Request Handling
                              1. Resource Competition
                              2. State Management Issues
                                1. Improper State Transitions
                                  1. State Persistence Problems
                                    1. Client-Side State Manipulation
                                    2. Calculation and Processing Errors
                                      1. Integer Overflow
                                        1. Rounding Errors
                                          1. Currency Manipulation
                                        2. Workflow Bypass Techniques
                                          1. Parameter Manipulation
                                            1. Hidden Field Modification
                                              1. URL Parameter Tampering
                                                1. HTTP Method Manipulation
                                                2. Step Skipping
                                                  1. Direct Object Access
                                                    1. Forced Browsing
                                                      1. State Manipulation
                                                      2. Process Flow Manipulation
                                                        1. Backward Navigation
                                                          1. Parallel Processing
                                                            1. Out-of-Order Execution
                                                          2. Data Integrity Testing
                                                            1. Input Validation Bypass
                                                              1. Client-Side Validation Bypass
                                                                1. Server-Side Validation Flaws
                                                                  1. Data Type Confusion
                                                                  2. Data Tampering
                                                                    1. Form Field Manipulation
                                                                      1. HTTP Header Manipulation
                                                                      2. Data Consistency Checks
                                                                        1. Cross-Field Validation
                                                                          1. Referential Integrity
                                                                            1. Business Rule Enforcement
                                                                          2. Abuse of Functionality
                                                                            1. Feature Misuse
                                                                              1. Legitimate Function Abuse
                                                                                1. Resource Exhaustion
                                                                                  1. Service Disruption
                                                                                  2. Denial of Service via Logic
                                                                                    1. Resource Consumption
                                                                                      1. Infinite Loops
                                                                                        1. Memory Exhaustion
                                                                                        2. Economic Logic Attacks
                                                                                          1. Price Manipulation
                                                                                            1. Discount Abuse
                                                                                              1. Refund Fraud

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                                                                                          8. Authentication and Session Management Testing

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                                                                                          10. Web Services and API Security Testing