Offensive Security

Web Application Pentesting

OWASP-aligned assessments uncovering logic flaws, injection, and auth bypasses.

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What it is

Web application testing against your real business logic, not a scanner sweep. We work authenticated as every role you issue, chase broken access control and privilege boundaries between tenants and users, and prove impact by reaching data or actions the role should never touch. OWASP Top 10 is the floor, not the ceiling.

How we do it

  1. 1

    Role and tenant mapping

    We inventory every role, permission and tenant boundary the application defines, so we can test across them rather than within one account.

  2. 2

    Authenticated crawling

    We map routes, parameters and state transitions as each role, including flows only reachable mid-journey.

  3. 3

    Access control testing

    Horizontal and vertical privilege checks on every object reference — the class of bug scanners miss and attackers find first.

  4. 4

    Injection and input handling

    SQL, NoSQL, template, command and deserialization paths, plus stored and DOM-based cross-site scripting.

  5. 5

    Business logic abuse

    Price manipulation, quantity and coupon abuse, race conditions on balance changes, workflow steps skipped or replayed.

  6. 6

    Proof and retest

    We demonstrate real impact with reproducible steps, then re-verify each fix.

What's included

  • Testing as every role you issue, not just one
  • Cross-tenant access control checks
  • Business logic and workflow abuse cases
  • Authenticated and unauthenticated coverage
  • Reproduction steps with request/response evidence
  • Free retest of fixed findings

Who needs it

  • SaaS teams with multi-tenant data separation to prove
  • Applications handling payments, PII or health records
  • Teams shipping a major release or entering enterprise procurement

Deliverables

  • Findings with full HTTP request/response evidence
  • Access control matrix showing what each role could actually reach
  • Remediation guidance written for the developers who will fix it
  • Retest verification letter

Compliance relevance

OWASP ASVSPCI DSSSOC 2ISO 27001GDPR

Frequently asked questions

We need accounts — ideally one per role. Most serious web findings are authorization flaws, and those are invisible without credentials on both sides of the boundary you want tested.
Staging is preferred if it mirrors production data-flow and configuration. Where staging diverges meaningfully we test production read-only paths under an agreed window.
Destructive actions are agreed in writing before testing. We use dedicated test accounts, tag the records we create, and hand you a cleanup list at the end.
New to penetration testing?

Our complete guide covers methodology, standards, what a good report contains, and how often to test.

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