about

i'm gatekeeperr, a young security researcher into binary exploitation and malware analysis. this site collects my writeups on real-world bugs, ctf challenges and blog posts about pwn and malware.

latest

blog · 2026-05-18 · 3 min read

Binary Security Mechanisms: PIE + ASLR

A breakdown of PIE + ASLR, what they do, how they're connected, and how to bypass them.

blog · 2026-05-17 · 3 min read

Binary Security Mechanisms: RELRO

A breakdown of RELRO, what it does, and how it can be bypassed.

writeup · 2026-05-13 · 2 min read

you-know-0xdiablos - HackTheBox (pwn, Easy)

HackTheBox easy pwn challenge - ret2win with stack-based buffer overflow and parameter passing.

blog · 2026-05-10 · 3 min read

What is libc, GOT and PLT?

Explaining libc, GOT, and PLT and how attackers exploit them for ROP.

writeup · 2026-04-17 · 4 min read

Malware Analysis: Simple Linux Reverse Shell in C

A detailed analysis of a simple Linux reverse shell written in C.

writeup · 2026-04-08 · 4 min read

Heap 0 - picoCTF (pwn, Easy)

picoCTF easy pwn challenge — introduction to heap buffer overflows.