Skill UI

A comprehensive framework for penetration testing APIs, designed to detect and exploit critical injection flaws. It covers SQL injection (SQLi), NoSQL injection, OS command injection, LDAP injection, and Server-Side Request Forgery (SSRF). This skill guides the testing of all input vectors—including path parameters, headers, query strings, and request bodies—to assess input validation and backend security posture against industry standards like OWASP.

This skill automates the process of testing for Broken Function Level Authorization (BFLA) vulnerabilities in APIs. It simulates attempts by low-privilege users to access or execute administrative functions and privileged endpoints by manipulating HTTP methods, paths, and credentials. It is essential for comprehensive API security audits and validating Role-Based Access Control (RBAC) enforcement.

This skill guides security testers in identifying excessive data exposure in REST and GraphQL APIs. It involves intercepting API responses and analyzing them for leaked Personally Identifiable Information (PII), internal identifiers, or sensitive business data that the client UI does not display but the API transmits. It maps directly to OWASP API3:2023 Broken Object Property Level Authorization, helping prevent data leaks via over-fetching.

A detailed guide on discovering and exploiting Mass Assignment vulnerabilities in REST APIs. Users learn to inject unexpected parameters into API requests (POST, PUT, PATCH) to bypass authorization controls, escalate privileges (e.g., changing 'role'), and modify sensitive fields (e.g., 'balance', 'isAdmin') during security assessments and bug bounty hunting.

This skill guides security analysts through advanced threat-hunting methodologies focused on detecting DNS-based persistence. It analyzes passive DNS history, zone file audits, and API data (like SecurityTrails) to identify unauthorized record modifications, subdomain takeovers, and DNS hijacking attempts that bypass traditional security controls. Ideal for SOC analysts and threat hunters.

This skill provides advanced threat hunting capabilities to detect NTLM relay attacks within Active Directory environments. It analyzes critical Windows Security Event 4624 logs, specifically focusing on logon type 3 using NTLMSSP authentication. The detection logic identifies suspicious patterns, including IP-to-hostname mismatches, rapid multi-host authentications, and lack of SMB signing enforcement, helping SOC analysts pinpoint unauthorized credential access attempts.

This guide details the implementation of robust API abuse detection mechanisms. It covers advanced rate limiting techniques, such as the Token Bucket and Sliding Window algorithms, to defend APIs against DDoS attacks, brute force attempts, and credential stuffing. It emphasizes using distributed stores like Redis for accurate, scalable, and adaptive security controls in an API gateway context.

This comprehensive guide details how to implement centralized security controls at the API gateway layer. It covers critical functionalities such as JWT authentication enforcement, advanced rate limiting, request/response validation against OpenAPI specs, and integrating Web Application Firewalls (WAF). The process is applicable across major platforms like Kong, AWS API Gateway, and Azure APIM, ensuring robust defense in depth for microservices architecture.

Implements comprehensive security controls for the entire API key lifecycle, including secure generation, hashing, storage, rotation, and revocation. This skill involves designing keys with sufficient entropy, enforcing per-key scoping, setting rate limits, and building automated workflows to prevent leakage and unauthorized access. Essential for robust server-to-server authentication.

This guide details how to implement robust API schema validation using OpenAPI Specification (OAS) and JSON Schema. It enforces strict input/output contracts, preventing critical vulnerabilities such as injection attacks (SQLi, XSS), data leakage, and mass assignment by validating data types and structure at the API gateway or development level.

API Security Posture Management (API-SPM) provides continuous, unified visibility into an organization's entire API attack surface. It automatically discovers, classifies, and risk-scores all APIs—including internal, external, and shadow endpoints. By aggregating findings from various sources (DAST, SAST, runtime logs), it helps enforce security policies, detect configuration drift, and maintain compliance across the entire API lifecycle.

This guide details how to implement comprehensive API security testing using the 42Crunch platform. It performs static audits of OpenAPI specifications (API Audit) and dynamic vulnerability scanning (Conformance Scan) against live APIs. Supports integration into CI/CD pipelines to proactively discover OWASP API Top 10 vulnerabilities, enabling a Shift-Left security approach.