Skill UI

A comprehensive guide to implementing production-ready patterns for the Webflow SDK. Covers essential architectural patterns such as singleton client management, robust typed error handling (including specific HTTP status codes like 401, 403, 429), efficient pagination helpers, rate limit monitoring via raw response access, and multi-tenant client factory setup. Essential for building scalable, enterprise-grade Webflow integrations.

This skill provides a robust mechanism for extending an existing API gateway by adding custom, non-GraphQL HTTP endpoints (GET, POST, PUT, etc.). Developers can implement the Route.Interface and register it using the <Api.Route> component. It supports full Dependency Injection (DI), providing framework-agnostic Request and Reply objects, making it ideal for integrating complex business logic directly into the API structure.

An advanced application framework for Go, combining a reflection-based Dependency Injection (DI) container with robust lifecycle management. It provides features like `fx.Module` for modular composition, signal-aware run loops (handling SIGINT/SIGTERM), and structured hooks (OnStart/OnStop). Ideal for building long-running services, such as daemons, HTTP servers, or workers, ensuring graceful startup and shutdown.

A comprehensive playbook for bypassing 401/403 Forbidden errors. Covers advanced techniques like path normalization tricks (encoding, traversal), HTTP method tampering, IP spoofing headers, and protocol downgrade attacks. Essential knowledge for penetration testing and security auditing.

A detailed playbook covering CRLF (Carriage Return Line Feed) injection techniques. This exploit targets insecure handling of user input within HTTP response headers (e.g., Location, Set-Cookie) or log files. It demonstrates advanced attacks like response splitting, XSS escalation via double CRLF, cache poisoning, and session fixation, essential for deep security testing.

A sophisticated payload bypass technique targeting Java applications. It exploits the silent loss of high 8 bits when 16-bit Java characters are cast or written as 8-bit bytes. This allows attackers to bypass WAF/IDS security measures by making the WAF see harmless Unicode, while the backend service processes the original malicious ASCII byte payload. Ideal for blind SQLi, deserialization RCE, and path traversal. This primitive affects major frameworks like Tomcat, Spring, Jackson, and HttpClient.

A comprehensive playbook detailing how web applications can be vulnerable to attacks by manipulating the HTTP Host header. Covers critical techniques such as password reset poisoning, Web Cache Poisoning, Server-Side Request Forgery (SSRF), and Virtual Host bypass. Essential reading for penetration testers and security researchers.

HTTP Parameter Pollution (HPP) occurs when a single request contains multiple instances of the same parameter key. Different components in the request path (e.g., WAFs, proxies, application frameworks) may parse these duplicate keys using different rules (first value, last value, array join). This skill teaches how to exploit these discrepancies to bypass security checks, execute SSRF, or manipulate business logic.

This expert playbook details advanced attack vectors specific to the HTTP/2 protocol. It covers sophisticated techniques such as h2c smuggling, exploiting pseudo-header discrepancies, HPACK compression vulnerabilities, and abusing stream multiplexing. Use this skill for professional penetration testing and security auditing of H2 services, especially for bypassing proxy-level controls and WAFs.

This expert playbook details advanced techniques for bypassing SSL pinning mechanisms (Certificate, Public Key, SPKI) on mobile applications running on Android and iOS. It provides practical methods using tools like Frida and Objection, covering various frameworks (Flutter, React Native, Xamarin) and multiple pinning types to enable the interception and analysis of encrypted HTTPS traffic.

An expert-level playbook detailing advanced techniques for NTLM relay and authentication coercion. Covers cross-protocol attacks targeting SMB, LDAP, HTTP, and MSSQL. Includes methods like LLMNR poisoning, PetitPotam, and advanced domain privilege escalation to bypass standard authentication controls.

A comprehensive playbook for advanced security testing, focusing on race conditions and TOCTOU (Time-of-check to time-of-use) vulnerabilities in web applications. It guides users to exploit non-atomic, state-changing operations (e.g., coupons, balance deductions, single-use rewards) by sending highly synchronized, parallel requests (including HTTP/2 single-packet attacks). Essential for identifying weaknesses in authorization and transactional integrity.