N Arun Kumar | Penetration Tester

About Me

> Education

Bachelor of Computer Applications

Cloud Technology & Information Security

Assam Down Town University

CGPA 8.01 | 2024 – Present

I am a passionate Penetration Tester and Security Researcher focusing on Web Application Security and Active Directory. My objective is to identify and mitigate vulnerabilities before they can be exploited.

Currently focused on preparing for CPTS, mastering advanced Active Directory exploitation, and contributing to the security community through responsible disclosure on platforms like HackerOne and Intigriti.

Experience

Dec 2024 – Jun 2025

VAPT Intern

ZeroRisk Labs

Web Application Penetration Testing
Network Penetration Testing
Vulnerability Assessment & Security Reporting
Utilized Burp Suite, Nmap, Nessus, Metasploit

Ongoing

Independent Security Research

HackerOne & Intigriti

Responsible Disclosure and Reconnaissance
Manual Testing for XSS, IDOR, Authentication Flaws
Detailed Security Reporting

Skills & Toolkit

> Core

Web App Security Network Security Active Directory OWASP Top 10 Responsible Disclosure

> OS & Scripting

Python Bash PowerShell Linux Windows

> Toolkit

Burp Suite

Nmap

Nessus

Metasploit

SQLMap

Nuclei

ffuf

BloodHound

Projects

Automated Payload Testing Script

Custom Python automation script designed to streamline the testing of various payloads during web application assessments.

Python | Automation

PortSwigger Labs

Continuous practice and mastery of web application vulnerabilities through extensive lab environments.

WebSec | Burp Suite

HTB Active Directory Labs

Practical exploitation of complex Active Directory environments, focusing on lateral movement and privilege escalation.

AD | BloodHound

Certifications

01

eJPTv2

Junior Penetration Tester

02

Certified AppSec Practitioner

Application Security

03

Jr Penetration Tester

Training

Hack The Box Academy

Rank: Top 5%

Completed: 181+ Labs

Pursuing CPTS (Certified Penetration Testing Specialist).

Establish Connection

Open to new opportunities, collaborations, and responsible disclosure discussions.

06n.arun@gmail.com