business-logic-testing

Name: business-logic-testing
Availability: InStock
Author: Q16G

Detect and verify business-logic security flaws in web application workflows.

83|8|Updated May 6, 2026

Search Tags:#business-logic #pentest #security-testing #race-condition #toctou #notification-abuse #registration-abuse

Ready to run

npx skills add https://github.com/Q16G/aster --skill business-logic-testing-q16g

💬 Prompt for ChatGPT / Claude Chat▼

Please help me install this Agent Skill.
Skill: business-logic-testing
Source: https://github.com/Q16G/aster/tree/main/skills/pentest/business-logic-testing
Command: npx skills add https://github.com/Q16G/aster --skill business-logic-testing-q16g

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Business logic vulnerabilities can undermine security even when code looks correct. This skill provides a structured approach to identify, reproduce, and verify business-logic vulnerabilities in real-world workflows such as notifications, registrations, and concurrent resource usage.

Core Features & Use Cases

Checklist-driven testing: guides testers through common business-logic vulnerability classes (notification abuse, registration abuse, race conditions).
Modular sub-skills: loads dedicated checks for each scenario and aggregates results.
Deterministic execution: supports controlled, repeatable test runs and clear evidence collection.

Quick Start

Load this skill against your target application and supply the target URL to start a structured business-logic security assessment.

Frequently Asked Questions about business-logic-testing

High-intent search queries and answers about installing and using this skill.

FAQPage Schema

How do I test for business-logic vulnerabilities in web applications?▼

Testing for business-logic vulnerabilities involves automating detection and verification of logic errors in workflows like notifications and registrations. A structured, checklist-driven assessment identifies exploitable flaws where logic errors enable abuse.

What is a race condition and TOCTOU vulnerability in security testing?▼

A race condition or TOCTOU vulnerability in security testing is a timing flaw in concurrent resource usage that enables abuse. Detection applies deterministic testing workflows to reproduce and verify these business-logic security flaws under controlled conditions.

How do I detect notification and registration abuse in web applications?▼

Detecting notification and registration abuse requires applying modular sub-skills to test specific workflows for logic errors. This structured approach executes dedicated checks for each scenario and aggregates results to verify exploitable business-logic vulnerabilities.

Can I perform a pentest with deterministic and repeatable test runs?▼

Yes, you can perform a pentest with deterministic and repeatable test runs for business-logic security flaws. This approach supports controlled execution and clear evidence collection to reliably reproduce race conditions and logic errors.

What are the limitations of checklist-driven business-logic testing?▼

The limitation of checklist-driven business-logic testing is that it specifically targets known vulnerability classes like notification abuse, registration abuse, and race conditions. It may not detect novel logic flaws outside these predefined concurrent resource usage and workflow scenarios.