Individual skill
performing-zero-day-vulnerability-discovery
Systematic methodology for discovering novel vulnerabilities through manual code auditing, fuzzing, reverse engineering, and creative attack chaining during authorized security assessments.
internal/tools/skills/data/offensive-security/performing-zero-day-vulnerability-discovery/SKILL.md
Source commit d42f381ad34843e71a42658e5c57290c713e85af
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- Matches the observed repository HEAD
- Yes
- Scanner rules are current
- Yes
- Repository scan complete
- No
- Skill scan complete
- No
- Observed behavior
- Network or broad shell
- Last checked
- Nov 9, 2026
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Repository context
- Repository stars (not skill ratings)
- 1,316
- Repository last updated
- Nov 8, 2026
- License
- Apache-2.0
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- cybersecurity Repository topic
- security Repository topic
- bug-bounty Repository topic
- automation Repository topic
- autonomous-pentesting Repository topic
- ai-agent Repository topic
- ai-security Repository topic
- ethical-hacking Repository topic
- golang Repository topic
- penetration-testing Repository topic
- penetration-testing Declared skill tag
- zero-day Declared skill tag
- fuzzing Declared skill tag
- vulnerability-research Declared skill tag
- exploit-development Declared skill tag
- bug-bounty Declared skill tag
- security Derived category
- engineering Derived category
- testing Derived category
- research Derived category
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# Performing Zero-Day & Novel Vulnerability Discovery
## When to Use
- When standard vulnerability scanners and known CVE checks return no results
- During deep-dive penetration tests where the client expects original research
- For custom-built applications with no public CVE history
- When testing proprietary software, APIs, or firmware
- During bug bounty hunting where unique/novel findings earn higher payouts
- After exhausting all known attack vectors in earlier phases
## Most Often Missed & How to Confirm
- Business-logic and authorization flaws: scanners can't see them, so they're the highest-value miss. Confirm IDOR/BOLA by replaying a request with a second valid account's token and proving you read/modify the first user's data — never infer from status codes alone.