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Sep102025

BGP at Doors of Autonomous Systems Is Simple

Build VXLAN tunnels and a BGP EVPN control plane in GNS3, the same data center networking techniques major cloud providers run in production.

23 min read

Mar202025

AWS Cloud Practitioner (CLF-C02) Cheat Sheet

AWS Cloud-Practitioner Certification Cheat-Sheet Exam-Guide

Quick reference guide for passing the AWS Certified Cloud Practitioner (CLF-C02) exam with all essential concepts, services, and exam tips.

14 min read

Jan102025

Dynamic Mach-O ARM64 Packer

arm64 malware-dev macho binary-injection

Building a Mach-O packer for macOS ARM64 binaries: dynamic library injection, binary manipulation, and the internal structure of macOS executables.

13 min read

Jan102025

x86-64 ELF Binary Packer

x86-64 malware-dev linux binary-injection

Build your own ELF packer for x86-64 Linux. Learn binary manipulation, shellcode injection, and executable file structure through hands-on implementation.

11 min read

Mar272023

webserv: An HTTP/1.1 Web Server in C++98

C++Networking HTTP Systems-Programming Web-Server

Building a production-grade HTTP/1.1 web server from scratch in C++98: TCP sockets, I/O multiplexing with select(), HTTP parsing, and CGI support.

10 min read

Apr182022

Minishell: Building a Bash Clone in C

C Unix Systems-Programming Shell Process-Management

Building a Bash-like shell from scratch in C: pipes, process management, signal handling, redirections, and command execution.

17 min read

Aug102021

get_next_line: How Static Buffers Work in C

c-programming 42-school get_next_line low-level memory-management

Reading huge files line by line without crashing: how 42 School's get_next_line uses static variables and buffer management to persist memory across calls.

12 min read