A thick client, also known as a fat client or rich client, is a type of software application that is designed to run on a client's computer, rather than on a remote server. Thick clients are typically large, complex programs that perform many functions locally, and require significant resources and processing power on the client side.

Thick client pentesting involves both local and server-side processing and often uses proprietary protocols for communication.

ARCHITECTURE OF THICK CLIENT

Two-Tier Architecture

In two-tier architecture, the thick client application implements client-to-server communication. The application is installed on the client computer and, in order to work, will need to communicate with a database server.  

Three-Tier Architecture

In three-tier architecture, the client communicates with an application server, which in turn talks to the database in a manner similar to a regular web application. The most common communication method in these applications may be carried out using HTTP/HTTPS. Three-tier architecture has a security advantage over two-tier architecture because it prevents the end-user from communicating directly with the database server.

 

Key Benefits

Protects sensitive data from breaches.

Reduces risk from both internal and third-party sources.

Avoid costly service interruptions by preventing infections and exploits

No Business Disruptions

Keeps customer data secure and builds customer confidence.

Approach & Methodology

  • Reconnaissance:
  • Planning and Analysis:
  • Vulnerability Detection:
    • Identifying potential threats to resources.
    • Use of automated scanners to find out signature based vulnerabilities like XSS, SQL, LFI,etc.
    • Manual methods are used to find out the business logic errors which might compromise the application.
    • While automated tool testing enables efficiency, it effectively provides areas of interest to further explore through manual testing.
    • We follow standards like Open Web Application Security Project OWASP Top 10(Web/Mobile/API), SANS 25, etc.
  • Exploitation:
    • Piece of software or script used to exploit the vulnerability.
    • Gather and log evidence that can be used to prove the exploitation with the help of screenshots.
    • Chaining of vulnerabilities to leverage the impact.
    • We aim to manually exploit the vulnerability identified in the previous steps in order to determine its potential impact and its risk.
  • Initial Reporting:
    • Severity and impact of vulnerability.
    • Detailed description of the vulnerability such as affected endpoints, evidences.
    • Recommendations to address the vulnerability.
    • Risk Evaluation.
  • Patching:
    • Client development team addresses the vulnerabilities
  • Confirmatory Test & Reporting:
    • Perform the former method (VA-PT) in terms of Revalidation.
    • Bypassing of vulnerabilities to check where the patching is robust enough.
    • Report with OPEN/Closed status corresponding to the vulnerability.
  • Closure of Execution:
    • Closing meeting
    • Submission of final Report with way ahead.
    • Based on the client requirement Regulator certificate such as Cert-In.

Deliverables

As a leading cyber security firm, Secure n Comply emphasizes fully communicating the value of its service and findings.

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  • Executive Report
  • Remediation
  • Compliance Certificate
  • Support by Technical Experts
  • Suggestions as per Industry Best Practices


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