Penetration Testing Methodology

Penetration Testing Methodology

Manual penetration testing complements automated tools by finding complex vulnerabilities that require human intuition and creativity.

Mobile Penetration Testing Checklist:

// iOS - Penetration testing framework
import Foundation

class PenetrationTestFramework {
    
    enum TestCategory {
        case authentication
        case authorization
        case dataStorage
        case cryptography
        case networkCommunication
        case platformInteraction
        case codeQuality
        case resilience
    }
    
    struct TestCase {
        let id: String
        let category: TestCategory
        let name: String
        let description: String
        let severity: SecurityIssue.Severity
        let testMethod: () -> TestResult
    }
    
    struct TestResult {
        let passed: Bool
        let findings: [String]
        let evidence: [String: Any]
        let remediation: String?
    }
    
    // Authentication test cases
    func getAuthenticationTests() -> [TestCase] {
        return [
            TestCase(
                id: "AUTH-001",
                category: .authentication,
                name: "Biometric Bypass Test",
                description: "Attempt to bypass biometric authentication",
                severity: .critical,
                testMethod: testBiometricBypass
            ),
            TestCase(
                id: "AUTH-002",
                category: .authentication,
                name: "Session Fixation",
                description: "Test for session fixation vulnerabilities",
                severity: .high,
                testMethod: testSessionFixation
            ),
            TestCase(
                id: "AUTH-003",
                category: .authentication,
                name: "Brute Force Protection",
                description: "Test account lockout mechanisms",
                severity: .medium,
                testMethod: testBruteForceProtection
            )
        ]
    }
    
    // Data storage test cases
    func getDataStorageTests() -> [TestCase] {
        return [
            TestCase(
                id: "STOR-001",
                category: .dataStorage,
                name: "Keychain Security",
                description: "Test keychain item protection levels",
                severity: .high,
                testMethod: testKeychainSecurity
            ),
            TestCase(
                id: "STOR-002",
                category: .dataStorage,
                name: "File System Encryption",
                description: "Verify file system encryption implementation",
                severity: .high,
                testMethod: testFileSystemEncryption
            ),
            TestCase(
                id: "STOR-003",
                category: .dataStorage,
                name: "Cache Data Exposure",
                description: "Check for sensitive data in caches",
                severity: .medium,
                testMethod: testCacheDataExposure
            )
        ]
    }
    
    // Example test implementation
    private func testBiometricBypass() -> TestResult {
        var findings: [String] = []
        var evidence: [String: Any] = [:]
        
        // Test 1: Check if app allows fallback to weaker authentication
        let biometricManager = BiometricAuthManager()
        
        // Simulate biometric failure
        evidence["biometric_type"] = biometricManager.biometricType
        evidence["fallback_available"] = true // Check actual implementation
        
        // Test 2: Check if biometric can be bypassed by killing app
        // This would involve more complex runtime manipulation
        
        // Test 3: Check for timing attacks
        let authStartTime = Date()
        // Perform authentication attempt
        let authEndTime = Date()
        let authDuration = authEndTime.timeIntervalSince(authStartTime)
        evidence["auth_duration"] = authDuration
        
        if authDuration < 0.1 {
            findings.append("Authentication completes too quickly, possible bypass")
        }
        
        return TestResult(
            passed: findings.isEmpty,
            findings: findings,
            evidence: evidence,
            remediation: findings.isEmpty ? nil : "Implement proper biometric authentication with secure fallback"
        )
    }
    
    // Execute all tests
    func runPenetrationTests() -> PenTestReport {
        let allTests = getAuthenticationTests() + getDataStorageTests()
        var results: [TestCategory: [TestResult]] = [:]
        
        for test in allTests {
            let result = test.testMethod()
            
            if results[test.category] == nil {
                results[test.category] = []
            }
            results[test.category]?.append(result)
        }
        
        return PenTestReport(
            timestamp: Date(),
            results: results,
            summary: generateSummary(from: results)
        )
    }
    
    struct PenTestReport {
        let timestamp: Date
        let results: [TestCategory: [TestResult]]
        let summary: String
    }
}