Introduction

Microsoft Internet Information Services (IIS) is widely used to host enterprise applications, APIs and internal services. Because of its popularity, misconfigurations and legacy features sometimes create security gaps that can be identified during reconnaissance and assessment. This article walks through a clear, structured methodology for identifying IIS exposure and potential weaknesses, starting with Recon and moving step by step into more powerful fuzzing and real-world testing methods.

Phase 1: Mass Reconnaissance (Dorking)

Before we jump into testing, we first need to find some potential targets. Using simple but focused search dorks, we can quickly discover publicly accessible IIS servers, including those that may be outdated or exposed to known vulnerabilities.

Google Dorks

These dorks search for the phrase “IIS Windows Server” within a target’s subdomains by checking the page text, URL and title. This helps quickly identify IIS servers that may be publicly exposed and revealing server…