Advanced API Penetration Testing

We don't just scan APIs - we think and operate like sophisticated attackers to uncover critical vulnerabilities that automated tools miss.

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Our API Pentest Expertise

We focus on identifying exploitable vulnerabilities that pose real business risk to your API infrastructure

Beyond Automated Scans

While we use tools for initial discovery, our real value comes from:

  • Manual API endpoint discovery
  • Business logic vulnerability testing
  • Authentication/authorization bypass
  • Custom payload creation
  • Chained attack scenarios

Comprehensive API Testing

We assess all aspects of your API security:

  • REST API security testing
  • GraphQL API vulnerabilities
  • SOAP API security flaws
  • WebSocket security issues
  • gRPC API testing

Real-World Attack Simulation

We demonstrate actual risk, not just theoretical vulnerabilities:

  • Data exposure scenarios
  • Account takeover techniques
  • Privilege escalation paths
  • Mass assignment vulnerabilities
  • Server-side request forgery

Why Choose Our API Pentest Services

We deliver more value than automated scanners or checklist testers

API-Specific Focus

We specialize in API security, understanding the unique challenges and attack vectors that APIs present compared to traditional web applications.

Business Logic Testing

We focus on finding flaws in your API's business logic that automated tools can't detect, which often lead to the most severe vulnerabilities.

No Noise, Just Risk

We filter out false positives and low-risk findings to focus your remediation efforts on what actually matters to your business.

Actionable Reporting

Our reports include detailed attack paths, business impact analysis, and clear remediation guidance for your development team.

Our API Pentest Methodology

A strategic approach designed to uncover your most critical API vulnerabilities

1

API Discovery & Documentation Review

We identify all API endpoints (documented and undocumented) and analyze API documentation to understand intended functionality.

2

Authentication & Authorization Testing

We test API authentication mechanisms, token handling, and authorization controls to identify privilege escalation opportunities.

3

Input Validation & Injection Testing

We test for all forms of injection (SQLi, NoSQLi, command injection, etc.) and input validation flaws that could lead to API compromise.

4

Business Logic Testing

We analyze API workflows to identify logic flaws that could allow bypassing of security controls or unauthorized access to data.

5

Reporting & Remediation

Detailed reporting with risk-prioritized findings, clear remediation steps, and follow-up verification testing.

Our API Testing Services

Comprehensive assessments tailored to your API security needs

REST API Pentest

Comprehensive security assessment of RESTful APIs:

  • Authentication/authorization testing
  • Input validation testing
  • HTTP verb tampering
  • Mass assignment testing
  • Rate limiting testing

GraphQL API Pentest

Specialized testing for GraphQL APIs:

  • Introspection query analysis
  • Query complexity attacks
  • Field duplication attacks
  • Directive abuse testing
  • Batch query attacks

SOAP API Pentest

Security assessment for SOAP-based APIs:

  • XML injection testing
  • XXE vulnerability testing
  • WS-Security testing
  • SOAP action tampering
  • WSDL analysis

Our API Pentest Toolkit

Tools are just the starting point - our expertise is in manual analysis and exploitation

Burp Suite

Postman

GraphQLmap

OWASP ZAP

SoapUI

Custom Scripts

Advanced API Testing Techniques

We employ sophisticated techniques to uncover deep API vulnerabilities

JWT Attacks

Testing for JWT implementation flaws including algorithm confusion, weak secrets, and missing validation.

Mass Assignment

Identifying endpoints vulnerable to mass assignment attacks that could allow property overwrites.

BOLA Testing

Comprehensive testing for Broken Object Level Authorization vulnerabilities.

BFLA Testing

Testing for Broken Function Level Authorization vulnerabilities in API endpoints.

IDOR Testing

Identifying Insecure Direct Object References that could lead to data exposure.

Rate Limit Bypass

Testing for methods to bypass API rate limiting controls.

Ready for an API Pentest That Actually Improves Your Security?

We focus on finding the vulnerabilities that matter, with clear guidance on how to fix them.

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Sarsolutionz Pentest