Exploiting React2Shell Vulnerability {CVE-2025-55182/66478}

In this post, I’ll walk you through a a critical vulnerability in React Server Components (RSC). Tracked as CVE-2025-55182 and widely known as React2Shell, the flaw enables unauthenticated remote code execution (RCE) in applications using the React Server Components Flight protocol. ...

December 8, 2025 · 3 min · Bhagavan Bollina

TL;DR Why you shouldn't doubt yourself while giving OSCP

Preparing for the OSCP can be overwhelming, I totally get it. There are moments where self-doubt creeps in, especially when things don’t go as planned in exam. In this post, I’ll share some tips that helped me push through and pass the exam. Why You Shouldn’t Doubt Yourself While Giving OSCP The OSCP exam is as much a mental battle as it is a technical one. If you’ve ever doubted yourself during this journey, I’ve been there too and this post is for you. I’ll walk you through how I went from completely underprepared to finally cracking the exam after a focused sprint. Maybe this will help you see that it’s never too late to shift gears and get it done. ...

July 22, 2025 · 9 min · Bhagavan Bollina

Abusing Sysmon Driver Altitude to Evade Detection

In this post, I’ll walk you through a stealthy evasion technique that involves modifying the Sysmon driver’s altitude. how altitudes affect kernel monitoring, and how attackers can abuse this mechanism to disable or crash security tools, without ever touching the EDR itself. ...

June 9, 2025 · 4 min · Bhagavan Bollina