# OAuth Authentication - Documentation Index

## Quick Access Guide

### 🎯 I want to...

**Complete all labs quickly** → [`oauth-quickstart.md`](oauth-quickstart.md)
- 60-minute complete walkthrough
- Speed-run strategies
- Emergency cheat commands

**Learn comprehensive exploitation** → [`oauth-portswigger-labs-complete.md`](oauth-portswigger-labs-complete.md)
- 6 complete lab solutions with detailed explanations
- Step-by-step HTTP requests/responses
- Burp Suite workflows
- Real-world impact analysis

**Find specific payloads** → [`oauth-cheat-sheet.md`](oauth-cheat-sheet.md)
- Exploitation payloads
- Bypass techniques
- Burp Suite commands
- Detection signatures

**Study references and standards** → [`oauth-resources.md`](oauth-resources.md)
- OWASP documentation
- Industry standards (RFCs)
- CVE database
- Tools and frameworks
- Research papers
- Secure coding practices
- Training platforms
- Bug bounty programs

---

## Document Descriptions

### oauth-quickstart.md
**Purpose**: Fast-track lab completion

**Contents**:
- 5-minute vulnerability check
- Individual lab speed-runs (5-15 minutes each)
- One-liner solutions
- Emergency cheat sheet
- Troubleshooting guide
- Pre-lab setup
- Productivity tips

**Best For**:
- Time-constrained testing
- Quick certification prep
- Rapid skill assessment
- CTF competitions

**Time Investment**: 60 minutes total

---

### oauth-portswigger-labs-complete.md
**Purpose**: Comprehensive OAuth security mastery

**Contents**:
- OAuth 2.0 fundamentals
- 6 complete lab solutions:
  1. Authentication Bypass via Implicit Flow (Apprentice)
  2. Forced OAuth Profile Linking (Apprentice)
  3. OAuth Account Hijacking via redirect_uri (Apprentice)
  4. Stealing Tokens via Proxy Page (Practitioner)
  5. Stealing Tokens via Open Redirect (Practitioner)
  6. SSRF via Client Registration (Practitioner)
- Common OAuth vulnerabilities
- Attack techniques summary
- Burp Suite workflows
- Real-world exploitation case studies

**Best For**:
- Deep understanding of OAuth security
- Professional penetration testing
- Security researcher training
- Interview preparation
- Security certification study

**Time Investment**: 3-4 hours for thorough study

**Highlights**:
- Over 50 pages of detailed content
- Complete HTTP request/response examples
- Burp Suite step-by-step guides
- Real-world CVE analysis
- Defense strategies

---

### oauth-cheat-sheet.md
**Purpose**: Quick reference for exploitation and defense

**Contents**:
- Common vulnerabilities (8 categories)
- Testing methodology
- Exploitation payloads (ready-to-use)
- Burp Suite commands
- HTTP requests library
- Bypass techniques
- Detection signatures
- Prevention controls

**Best For**:
- Active penetration testing
- Quick payload lookup
- Burp Suite configuration
- Security assessment templates
- Developer security reviews

**Format**: Reference card style

**Sections**:
1. **Common Vulnerabilities**: Missing state, weak redirect_uri, implicit flow, client-side validation, scope escalation, SSRF
2. **Testing Methodology**: 3-phase approach (info gathering, vulnerability testing, exploitation)
3. **Exploitation Payloads**: HTML/JavaScript exploits ready to customize
4. **Burp Suite Commands**: Proxy, Repeater, Intruder workflows
5. **HTTP Requests Library**: Authorization, token exchange, user info, client registration
6. **Bypass Techniques**: redirect_uri, state validation, SSRF filters, token extraction
7. **Detection Signatures**: Log analysis, SIEM rules, WAF rules
8. **Prevention Controls**: Server-side and client-side secure implementations

---

### oauth-resources.md
**Purpose**: Comprehensive learning and reference materials

**Contents**:

**1. OWASP Documentation**
- OAuth 2.0 Security Cheat Sheet
- OAuth Weaknesses Testing Guide
- Authentication Cheat Sheet

**2. Industry Standards**
- OAuth 2.0 Framework (RFC 6749)
- OAuth 2.0 Security Best Practices (RFC 9700)
- PKCE for Public Clients (RFC 7636)
- OAuth 2.1 Draft (upcoming)
- OpenID Connect specifications
- OAuth for Native Apps (RFC 8252)
- Mutual-TLS (RFC 8705)
- DPoP (Demonstration of Proof-of-Possession)

**3. CVE Database & Security Advisories**
- National Vulnerability Database
- Notable OAuth CVEs:
  - CVE-2023-28131 (Expo OAuth - CVSS 9.8)
  - CVE-2022-24785 (GitHub Enterprise)
  - CVE-2019-11510 (Pulse Secure VPN - CVSS 10.0)
  - CVE-2019-9074 (GitLab OAuth)
  - And more...

**4. Tools & Frameworks**
- Testing tools (Burp Suite, OWASP ZAP, OAuth.tools)
- Development libraries (Authlib, Passport.js, Spring Security)
- Security testing tools
- Custom scripts

**5. Research Papers & Technical Articles**
- Academic research (ACM CCS papers)
- Industry research (PortSwigger, OAuth.com)
- Technical blog posts from security experts

**6. Secure Coding Practices**
- Language-specific examples (Python, JavaScript, Java)
- redirect_uri validation
- State parameter implementation
- PKCE implementation
- Token validation
- SSRF prevention

**7. Training Platforms**
- PortSwigger Web Security Academy
- PentesterLab
- HackTheBox
- TryHackMe
- OWASP WebGoat

**8. Bug Bounty Programs**
- HackerOne OAuth programs
- Bugcrowd targets
- Synack private programs
- Intigriti European focus
- Bug bounty tips and payout ranges

**Best For**:
- Long-term skill development
- Reference material
- Standards compliance
- Tool selection
- CVE research
- Secure development
- Career development

---

## Learning Paths

### Path 1: Rapid Certification Prep (1 day)
```
Morning (4 hours):
1. Read oauth-quickstart.md (30 min)
2. Complete all 6 labs following speed-run guide (60 min)
3. Review oauth-cheat-sheet.md (90 min)
4. Practice labs again for speed (60 min)

Afternoon (4 hours):
5. Read oauth-portswigger-labs-complete.md - focus on:
   - OAuth fundamentals
   - Common vulnerabilities
   - Burp Suite workflows
6. Take practice certification exam
```

**Outcome**: Ready for Burp Suite Certified Practitioner OAuth sections

---

### Path 2: Professional Penetration Tester (1 week)

**Day 1-2: Fundamentals**
- Read oauth-portswigger-labs-complete.md thoroughly
- Complete all labs with detailed notes
- Understand OAuth 2.0 flow types

**Day 3-4: Exploitation Techniques**
- Study oauth-cheat-sheet.md
- Practice exploitation payloads
- Master Burp Suite workflows
- Experiment with bypass techniques

**Day 5: Standards and CVEs**
- Read oauth-resources.md
- Study RFC 6749, RFC 7636, RFC 9700
- Analyze real-world CVE case studies
- Review attack patterns

**Day 6: Hands-On Practice**
- Set up local OAuth server for testing
- Practice all attack techniques
- Try variations and edge cases
- Document findings

**Day 7: Assessment and Documentation**
- Create personal methodology document
- Build custom Burp Suite extensions
- Write practice penetration test reports
- Review and consolidate knowledge

**Outcome**: Proficient OAuth security professional

---

### Path 3: Security Researcher (1 month)

**Week 1: Master Fundamentals**
- Complete Path 2 (Professional Penetration Tester)
- Deep dive into OAuth 2.0 specifications
- Study OpenID Connect

**Week 2: Advanced Exploitation**
- Research novel attack techniques
- Study academic papers from oauth-resources.md
- Analyze undocumented vulnerabilities
- Develop custom testing tools

**Week 3: Real-World Application**
- Set up bug bounty accounts
- Identify OAuth targets
- Perform security assessments
- Write detailed vulnerability reports

**Week 4: Contribution and Sharing**
- Write blog posts about findings
- Contribute to open-source OAuth tools
- Present at local security meetups
- Build portfolio of work

**Outcome**: Expert-level OAuth security researcher

---

### Path 4: Secure Developer (2 weeks)

**Week 1: Understanding Vulnerabilities**
- Read oauth-portswigger-labs-complete.md
- Complete all labs to understand attacker perspective
- Study common vulnerabilities section
- Review real-world exploitation case studies

**Week 2: Secure Implementation**
- Study oauth-resources.md - focus on:
  - Industry standards (RFCs)
  - Secure coding practices
  - Development libraries
- Implement OAuth in practice projects
- Review code with security checklist
- Set up automated security testing

**Outcome**: Developer capable of implementing secure OAuth

---

## Usage Scenarios

### Scenario 1: Active Penetration Test
**Documents Needed**: oauth-cheat-sheet.md, oauth-quickstart.md

**Workflow**:
1. Use oauth-quickstart.md 5-minute checklist for initial assessment
2. Reference oauth-cheat-sheet.md for:
   - Testing methodology
   - Exploitation payloads
   - Burp Suite commands
3. Document findings using report templates

---

### Scenario 2: Security Training
**Documents Needed**: oauth-portswigger-labs-complete.md, oauth-resources.md

**Workflow**:
1. Teach OAuth fundamentals using oauth-portswigger-labs-complete.md
2. Guide students through lab exercises
3. Reference oauth-resources.md for:
   - Standards documentation
   - Real-world case studies
   - Training platforms for practice

---

### Scenario 3: Bug Bounty Hunting
**Documents Needed**: All documents

**Workflow**:
1. Use oauth-quickstart.md for rapid target assessment
2. Deploy oauth-cheat-sheet.md exploitation techniques
3. Reference oauth-portswigger-labs-complete.md for:
   - Similar vulnerability patterns
   - Burp Suite workflows
4. Consult oauth-resources.md for:
   - CVE research for similar bugs
   - Bug bounty report writing tips
   - Payout expectations

---

### Scenario 4: Code Review
**Documents Needed**: oauth-cheat-sheet.md, oauth-resources.md

**Workflow**:
1. Use oauth-cheat-sheet.md prevention controls section
2. Check code against secure coding examples in oauth-resources.md
3. Reference industry standards for compliance
4. Document vulnerabilities with references to CVEs

---

### Scenario 5: Incident Response
**Documents Needed**: oauth-cheat-sheet.md, oauth-resources.md

**Workflow**:
1. Use oauth-cheat-sheet.md detection signatures to analyze logs
2. Reference similar CVEs in oauth-resources.md
3. Apply prevention controls for immediate mitigation
4. Develop long-term security improvements

---

## Quick Reference Matrix

| I need to... | Use this document | Section | Time |
|--------------|-------------------|---------|------|
| Complete a lab in 5 minutes | oauth-quickstart.md | Individual lab speed-runs | 5 min |
| Find a specific payload | oauth-cheat-sheet.md | Exploitation payloads | 2 min |
| Understand a vulnerability | oauth-portswigger-labs-complete.md | Specific lab solution | 15 min |
| Configure Burp Suite | oauth-cheat-sheet.md | Burp Suite commands | 5 min |
| Write secure code | oauth-resources.md | Secure coding practices | 20 min |
| Research a CVE | oauth-resources.md | CVE database section | 10 min |
| Test redirect_uri | oauth-cheat-sheet.md | Bypass techniques | 5 min |
| Learn OAuth fundamentals | oauth-portswigger-labs-complete.md | OAuth 2.0 fundamentals | 30 min |
| Find training platform | oauth-resources.md | Training platforms | 5 min |
| Troubleshoot lab issue | oauth-quickstart.md | Troubleshooting guide | 5 min |
| Get PKCE implementation | oauth-resources.md | Secure coding - PKCE | 10 min |
| Find bug bounty program | oauth-resources.md | Bug bounty programs | 5 min |
| Detect SSRF attempts | oauth-cheat-sheet.md | Detection signatures | 5 min |
| Understand real breach | oauth-portswigger-labs-complete.md | Real-world exploitation | 10 min |
| Build custom tool | oauth-resources.md | Tools & frameworks | 15 min |

---

## Skill Progression Checklist

### Level 1: Beginner
- [ ] Understand OAuth 2.0 flow types
- [ ] Complete Lab 1 (Implicit Flow Bypass)
- [ ] Complete Lab 2 (Forced Profile Linking)
- [ ] Complete Lab 3 (redirect_uri Hijacking)
- [ ] Identify missing state parameter
- [ ] Test basic redirect_uri validation
- [ ] Use Burp Suite Proxy and Repeater

**Time to Achieve**: 1-2 days

**Documents**: oauth-quickstart.md, oauth-portswigger-labs-complete.md (Labs 1-3)

---

### Level 2: Intermediate
- [ ] Complete Lab 4 (Proxy Page Token Theft)
- [ ] Complete Lab 5 (Open Redirect Token Theft)
- [ ] Complete Lab 6 (SSRF Client Registration)
- [ ] Chain multiple vulnerabilities
- [ ] Extract tokens via postMessage
- [ ] Perform SSRF attacks
- [ ] Write exploitation scripts
- [ ] Configure Burp Suite extensions

**Time to Achieve**: 1 week

**Documents**: All documents, focus on oauth-cheat-sheet.md

---

### Level 3: Advanced
- [ ] Discover novel OAuth vulnerabilities
- [ ] Bypass WAF protections
- [ ] Develop custom testing tools
- [ ] Find and report bug bounty vulnerabilities
- [ ] Write detailed security reports
- [ ] Implement PKCE correctly
- [ ] Perform comprehensive OAuth assessments
- [ ] Understand OAuth 2.1 improvements

**Time to Achieve**: 1 month

**Documents**: All documents, especially oauth-resources.md research papers

---

### Level 4: Expert
- [ ] Publish original OAuth research
- [ ] Contribute to OAuth specifications
- [ ] Discover high-impact CVEs
- [ ] Train others in OAuth security
- [ ] Develop OAuth security products
- [ ] Present at security conferences
- [ ] Author OAuth security tools
- [ ] Perform OAuth security audits

**Time to Achieve**: 6+ months

**Documents**: All documents + external research

---

## Document Statistics

### oauth-quickstart.md
- **Pages**: ~15
- **Word Count**: ~8,000
- **Read Time**: 30 minutes
- **Practice Time**: 60 minutes
- **Skill Level**: Beginner to Intermediate

---

### oauth-portswigger-labs-complete.md
- **Pages**: ~55
- **Word Count**: ~30,000
- **Read Time**: 2-3 hours
- **Practice Time**: 4-6 hours
- **Skill Level**: Beginner to Advanced

---

### oauth-cheat-sheet.md
- **Pages**: ~40
- **Word Count**: ~20,000
- **Read Time**: 1-2 hours
- **Reference Use**: Quick lookup
- **Skill Level**: All levels

---

### oauth-resources.md
- **Pages**: ~30
- **Word Count**: ~15,000
- **Read Time**: 1-2 hours
- **Study Time**: Ongoing reference
- **Skill Level**: All levels

---

## Total OAuth Documentation

**Combined Statistics**:
- **Total Pages**: ~140
- **Total Words**: ~73,000
- **Complete Read Time**: 5-7 hours
- **Complete Practice Time**: 10-15 hours
- **Coverage**: 6 PortSwigger labs, 8+ vulnerability types, 10+ CVEs, 20+ exploitation techniques

**Comprehensive Coverage**:
✅ OAuth 2.0 fundamentals
✅ All 6 PortSwigger OAuth labs
✅ Complete exploitation techniques
✅ Burp Suite workflows
✅ Real-world case studies
✅ Industry standards (RFCs)
✅ CVE analysis
✅ Secure coding practices
✅ Tools and frameworks
✅ Training resources
✅ Bug bounty guidance

---

## Updates and Maintenance

**Last Updated**: January 2026

**Update Schedule**:
- **Monthly**: New CVEs, bug bounty reports
- **Quarterly**: New attack techniques, tool updates
- **Yearly**: Major standard updates (OAuth 2.1)

**How to Stay Current**:
1. Monitor oauth-resources.md for new CVEs
2. Check PortSwigger for new labs
3. Follow OAuth working group updates
4. Review bug bounty write-ups
5. Study new research papers

**Contributing**:
- Report errors or outdated information
- Suggest new exploitation techniques
- Share real-world case studies
- Contribute custom scripts and tools

---

## Conclusion

This OAuth authentication documentation provides:

🎯 **Complete Coverage**: From fundamentals to expert-level exploitation
⚡ **Flexible Learning**: Choose your path (speed-run to mastery)
📚 **Comprehensive Reference**: 140+ pages of detailed content
🔧 **Practical Tools**: Ready-to-use payloads and scripts
🏆 **Real-World Focus**: CVE analysis and bug bounty guidance
✅ **Certification Ready**: Perfect for Burp Suite Certified Practitioner

**Start Here**:
- **Complete beginner?** Start with oauth-quickstart.md
- **Need comprehensive knowledge?** Read oauth-portswigger-labs-complete.md
- **Active testing?** Reference oauth-cheat-sheet.md
- **Research focus?** Study oauth-resources.md

**Remember**: OAuth security is complex. Take time to understand fundamentals before diving into exploitation. Practice in legal, authorized environments only.

**Happy hacking! 🔐**
