Vulnerability Assessment & Penetration Testing

Web Application Security Assessment

  • May 10, 2025
  • 0

🛡️ Sherlocked Security – Web Application Security Assessment

Proactively Secure Your Web Applications Before They Become a Breach Vector

📄 1. Statement of Work (SOW)

Service Name: Web Application Security Assessment
Client Type: SaaS, FinTech, eCommerce, Government, Startups
Service Model: Manual + Automated Penetration Testing
Compliance Coverage: OWASP Top 10, CWE, SANS 25, PCI-DSS, ISO 27001, SOC 2
Testing Types:

  • Black Box
  • Gray Box (with credentials)
  • White Box (with source code access – optional)

🧠 2. Our Approach

🔹 Hybrid Testing: Manual + AI-Augmented
🔹 Risk-Driven, Business-Logic Focused
🔹 Developer-Friendly Remediation

[Discovery] → [Reconnaissance] → [Automated Scanning] → [Manual Testing] → [Exploitation] → [Risk Mapping] → [Reporting & Walkthrough] → [Retesting & Certification]

🧪 3. Methodology

[Project Kickoff] → [Asset Mapping] → [Threat Modeling] → [Attack Surface Analysis] → [Vulnerability Identification] → [Proof-of-Concept Exploitation] → [Risk Analysis & Reporting] → [Patch Verification] → [Signoff & Certification]

📦 4. Deliverables to the Client

  1. ✅ Vulnerability Risk Matrix Table
  2. 🧾 Statement of Work (SOW)
  3. 🧭 Methodology Document
  4. 📘 Technical Report including:
    • Vulnerability Name
    • Description
    • Severity (CVSS v3.1)
    • Likelihood & Impact
    • Root Cause Analysis
    • Reproducible PoC Screenshots
    • Fix Recommendations
    • References
  5. 📊 Risk Visualizations & Attack Path Diagrams
  6. 📽️ Live Report Walkthrough (Optional Call)
  7. 🧑‍💻 Developer Assistance on Patch Guidance
  8. 🔁 Revalidation & Retesting
  9. 🎓 Final Security Certificate (Post-Fix)

🤝 5. What We Need from You (Client Requirements)

For Gray Box Testing:

  • ✅ URLs to staging/production environments
  • ✅ User roles/credentials (Admin/User/Editor/etc.)
  • ✅ API documentation (Swagger/Postman)
  • ✅ Authentication mechanism details (OAuth, SSO, MFA)
  • ✅ Access window/timings for testing
  • ✅ Primary point-of-contact from Dev or Infra Team
  • ✅ Whitelist our IPs if WAF/CDN is used

🧰 6. Tools & Technology Stack

  • 🔍 Burp Suite Professional
  • 🛠️ OWASP ZAP
  • 🔁 Postman / Insomnia (API Testing)
  • 🧱 Nuclei + Custom Templates
  • 🧬 Nikto / Wfuzz / Dirsearch
  • 🧠 AI-enhanced payload fuzzers
  • 🔐 Gitleaks / TruffleHog (for secrets & repo analysis)

🚀 7. Engagement Lifecycle (Lead → Closure)

1. Discovery Call 2. Problem Scoping & Requirements 3. Proposal + NDA + SoW 4. PO/Contract & Project Kickoff 5. Testing Phase (1-2 Weeks Typical) 6. Draft Report → Review Call 7. Final Report Delivery 8. Revalidation (1 Free Round) 9. Final Certification + Support Handover

🌟 8. Why Sherlocked Security? (Our USP)

Feature Sherlocked Advantage
🔍 Hybrid Testing Manual + AI-powered recon & fuzzing
🧠 Deep Business Logic Analysis Goes beyond standard OWASP checks
📘 Developer-Centric Reporting Fix-focused, CVSS & CWE aligned
🔁 Free Revalidation 1 round included, extra at nominal cost
🤝 Dev & Mgmt Engagement Slack/Teams support during testing
🏆 Security Certificate Provided post revalidation and fix signoff

📚 9. Real-World Case Studies

🛑 Attack in the Wild: IDOR in an eCommerce Giant

Issue: Predictable order IDs allowed full access to other users’ invoices.
Impact: 1.2M customers affected, ₹2.8 Cr penalty, brand damage.

🛠️ Our Fix Journey: HR SaaS Platform

Client: India-UK HRTech Startup
Findings:

  • Persistent XSS via resume uploads
  • Weak session tokens
    Our Role:
  • Delivered patch-focused audit
  • Assisted Dev team via Slack
    Outcome:
  • Cleared ISO 27001 audit
  • Signed long-term security retainer

🛡️ 10. SOP – Standard Operating Procedure

  1. Kickoff call
  2. Information collection & access setup
  3. Define scope (e.g., staging, production)
  4. Perform scanning (automated + custom tools)
  5. Perform manual testing & exploit attempts
  6. Send immediate alerts for critical findings
  7. Report draft delivery & feedback
  8. Final report with walkthrough
  9. Fix support (as needed)
  10. Retesting and final certification

📋 11. Sample Web App Security Checklist (Preview)

# ✅ Web Application Security Checklist (500+ checks total)

## Authentication & Session
- Weak password enforcement
- Session timeout issues
- No session invalidation post logout
- No rate limiting on login

## Access Control
- Insecure Direct Object Reference (IDOR)
- Bypass via parameter tampering
- Horizontal/vertical privilege escalation

## Input Validation
- Reflected/Stored XSS
- SQLi (classic, blind, time-based)
- Command Injection
- Path Traversal

## File Upload
- Upload shell using double extension
- SVG upload with script execution
- MIME type and magic bytes bypass

## API
- Missing authentication headers
- Unfiltered mass assignment
- Rate-limiting missing on sensitive endpoints

## Security Headers
- X-Frame-Options missing
- Content-Security-Policy misconfigured
- Strict-Transport-Security missing

## Business Logic
- Abuse of coupon codes
- Multiple reward generation
- Checkout flow manipulation

_Total Checks: 500+ across OWASP Top 10, CWE, API Sec, and Business Logic_

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