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Raunak Gupta

Security Researcher

Freelance security researcher and bug bounty hunter specializing in Android, Web, and API security. Passionate about open-source, AI, and LLMs. Legally helps companies secure their digital assets through ethical hacking & responsible disclosure.

Recent Activities

Bug Bounty

Reported critical vulnerabilities in multiple corporate web applications.

Tool Release

Developed and published multiple original tools focused on Android and web application security testing.

Blog Post

Covered topics like Broken Access Control, Injection Vulnerabilities, and Business Logic Flaws.

Security Projects

Bug Bounty Findings

Exploiting Broken Access Control to Access My College Panel

A detailed write-up on how I discovered and exploited a vulnerability to access my college's internal panel without needing any credentials.

Critical View Report

Comment Section Takeover via IDOR on GeeksForGeeks.com

A write-up on how a single unauthorized request exploiting Insecure Direct Object Reference (IDOR) allowed me to take control of the comment section on the GFG platform.

Security Tools

Elite Google Dorks Search by Biscuit

A powerful search tool by Biscuit to uncover sensitive files, login panels, and vulnerable parameters using curated Google dorks.

Google Dorks Recon Information Gathering
View on GitHub
Launch App

Automation Scripts

BugBash One

A one-stop script to set up essential bug bounty tools instantly. Simplifies your recon and automation setup in a single run.

View on GitHub

Android Export Viewer

A lightweight tool to extract and display exported components from Android apps, helping identify exposed activities, services, and receivers for security analysis.

View on GitHub

Blogs & Proof of Concepts

Blog cover
May 7, 2025 2 min read

From JS Recon to HTML Injection

A quick walkthrough on how JS recon uncovered an HTML injection vulnerability for potential exploitation.

HTML Injection Client-Side
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Blog cover
May 6, 2025 2 min read

Hacking Hospital: Mass PII Leak

A case study on how a vulnerability in a hospital system led to unauthorized access and exposure of sensitive patient information.

PII Exposure Healthcare Data Leak
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Nov 10, 2024 4 min read

30 Must-Read Books to Learn Hacking

A curated list of 30 essential books covering ethical hacking, web security, networking, malware analysis, and more for all skill levels.

Hacking Books Cybersecurity Learning Resources
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Nov 5, 2024 5 min read

55 YouTube Channels to Learn Hacking

A curated list of the best YouTube channels to learn ethical hacking, bug bounty, and cybersecurity from experts around the world.

YouTube Hacking Tutorials Cybersecurity
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Infosec Documentation

Vulnerabilities

Insecure Direct Object References (IDOR)

Detailed writeup on identifying and exploiting IDOR vulnerabilities with mitigation strategies.

Read Documentation

WordPress Pentesting Guide

Guide to identifying and exploiting common WordPress issues like vulnerable plugins, weak admin panels, and misconfigurations with remediation tips.

Read Documentation

GraphQL API Security Testing

Short guide on exploiting GraphQL flaws like introspection, unauthorized access, and data leaks, with tips for secure implementation.

Read Documentation

Security Tools

Burp Suite

Complete guide to using Burp Suite for web application security testing.

Read Documentation

Browser Extension for Bug Bounty

A handpicked list of browser extensions that enhance productivity, automation, and reconnaissance during bug bounty hunting.

Read Documentation

Hall of Fame

Company Logo

Supabase

High
Reported: April 2025
BAC Insecure API

Discovered multiple issues in Supabase APIs and business logic, including lack of rate limiting and input handling flaws. These findings allowed abuse of user invitation flow and potential phishing vectors.

View Acknowledgement
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Zerodha

High
Reported: April 2025
Insecure API Server-side Issues

Reported multiple issues in Zerodha's Android apps and website, targeting business logic and security misconfigurations. Findings affected core functionalities and exposed potential risks to user privacy and app integrity.

View Acknowledgement
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inflectra.com

Normal
Reported: March 2025
Input Validation Open Redirect PII Leak

Improper validation in social media link fields allowed insertion of arbitrary URLs instead of usernames. This business logic flaw enabled user tracking and privacy violations through redirection to external tracking domains.

View Acknowledgement
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wibmo.com

Medium
Reported: April 2025
IDOR Insecure API Email Disclosure

Discovered an IDOR vulnerability in the email update functionality, where changing the user ID in the request exposed other user's email addresses without proper authorization checks.

View Acknowledgement