Learning operating system development using Linux kernel and Raspberry Pi

A Compiler Writing Journey

tinyproxy - a light-weight HTTP/HTTPS proxy daemon for POSIX operating systems

OSSEC is an Open Source Host-based Intrusion Detection System that performs log analysis, file integrity checking, policy monitoring, rootkit detection, real-time alerting and active response.

Tutorial: Writing a "bare metal" operating system for Raspberry Pi 4

A hacker's userspace TCP/IP stack

Bare metal Raspberry Pi 3 tutorials

LKM rootkit for Linux Kernels 2.6.x/3.x/4.x/5.x/6.x (x86/x86_64 and ARM64)

In-a-Dyn is a dynamic DNS client with multiple SSL/TLS library support

Azazel is a userland rootkit based off of the original LD_PRELOAD technique from Jynx rootkit. It is more robust and has additional features, and focuses heavily around anti-debugging and anti-dete…

An LKM rootkit targeting Linux 2.6/3.x on x86(_64), and ARM

BACnet Protocol Stack library provides a BACnet application layer, network layer and media access (MAC) layer communications services.

Quagga Tracking repository - Master is at http://git.savannah.gnu.org/cgit/quagga.git

《ORANGE’S：一个操作系统的实现》源码

JynxKit2 is an LD_PRELOAD userland rootkit based on the original JynxKit. The backdoor has been replaced with an "accept()" system hook.

Raspberry Pi Zero baremetal examples

Copy: Linux process monitoring (exec, fork, exit, set*uid, set*gid)