The Bug Hunter’s Methodology Jason Haddix

Bug bounty veteran and cybersecurity educator Jason Haddix presents version 4 of The Bug Hunter's Methodology, focusing on wide-scope reconnaissance and modern web application asset discovery [00:00]. Haddix provides an exhaustive, structured guide to discovering an organization's true digital attack surface before probing individual applications for vulnerabilities.

The presentation breaks down external reconnaissance into sequential stages. Haddix begins with organization identification and Autonomous System Number (ASN) mapping, using tools like Amass to discover associated IP ranges and seed domains [37:39]. He details advanced subdomain enumeration pipelines, chaining passive Certificate Transparency logs with active DNS brute-forcing tools like subfinder, massdns, and alteration generators like dnsgen and altdns [50:54]. Moving to web discovery, he covers port scanning with masscan and nmap, rapid HTTP probing using httpx, and technology fingerprinting to locate forgotten staging servers and legacy admin panels.

Haddix demonstrates automation workflows, showing how to pipe command-line inputs between tools, parallelize scans using custom scripts, and discover hidden API endpoints and parameters with tools like Arjun [01:03:41]. The session provides bug hunters and red teamers with a repeatable, battle-tested blueprint for discovering critical assets overlooked by other researchers [01:16:06].

(AI summary — Gemini Flash)