Steal Secrets From The Web: Master Parameter Fuzzing | Recon Part 9

Methods to parse hidden/secret parameters from the target

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Hi geeks, it4chis3c (Twitter) came-up with another bounty earning write-up in the Bug Bounty Hunting Series:

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Credit: DALL-E

Why Parameters Matter

Parameter extraction/parsing is the process of identifying and analyzing parameters (e.g., ?id=123, POST data, headers) in web applications to uncover vulnerabilities. Parameters are often the entry point for attacks like SQLi, XSS, SSRF, and IDOR. Missing a parameter can mean missing a critical bug. This write-up combines theory, tools, and secret tips to level up your recon game.

1. Attack Surface: Parameters define how data flows between client and server.
2. Hidden Endpoints: Parameters like debug=true or admin=1 often expose hidden functionality.
3. Input Validation Flaws: Misconfigured parameters are low-hanging fruit for exploitation.

1. Passive Recon: Harvesting…