Joseph Ravichandran

fractal. Fractal is an operating system for microarchitecture reverse engineering

PacmanKit. An IOKit kext designed for microarchitectural security research on M1

PacmanAttack. Defeating Pointer Authentication on the Apple M1 with Hardware Attacks

CVE-2024-27815. macOS/ XNU kernel buffer overflow. Introduced in macOS 14.0 (xnu-10002.1.13), fixed in macOS 14.5 (xnu-10063.121.3)

CVE-2025-24118. An XNU kernel race condition bug

mock-kernel-2023. Official Solution and Source Code for the "Mock Kernel" challenge from UIUCTF 2023

PacmanPatcher. Patch your macOS kernel to enable support for the high-resolution timers on M1

PacmanOS. M1 bare metal project in Rust

DEFCON30-PACMAN. Materials from the DEF CON 30 talk on PACMAN

how-to-install-snow-leopard-in-qemu. How to install OS X 10.6 (the best OS ever made) in Qemu with OSX-KVM and OpenCore

pretty-secure-processor. A security oriented SoC featuring a custom pipelined RISC-V core and LCD-TFT controller

CVE-2022-29968. Exploit PoC for CVE-2022-29968 by Joseph Ravichandran and Michael Wang

PacmanFinder. A Ghidra static analysis tool for locating PACMAN Gadgets

skybolt. The Skybolt Operating System

CVE-2024-54507. An integer type confusion in XNU

mad22-labs. Microarchitectural Attacks and Defenses - ISCA 2022

pwn-docker. Docker for pwn challenges

applesi-paging-demo. Demonstrating 4K vs 16K paging on Apple Silicon Macs

osdev-cheatsheet. A reference guide comparing register names and calling conventions across ISAs

ipsw. iOS/macOS Research Swiss Army Knife

SecureHW-RISCV-Warmup. Warmup RISC-V programming and binary exploitation exercises for Secure Hardware Design at MIT

mad23-labs. Microarchitectural Attacks and Defenses - ISCA 2023

linux-patches. My patches to Linux

context-switching-tutorial. C

OSX-KVM. Run macOS on QEMU/KVM. With OpenCore + Monterey + Ventura + Sonoma support now! Only commercial (paid) support is available now to avoid spammy issues. No Mac system is required.

darwin-xnu-build. XNU kernel, Kernel Collection and CodeQL build scripts

pwnyOS-uiuctf-2020. A custom x86 32-bit Operating System used as a challenge in UIUCTF 2020

qemu-arm-fuzzer. Official QEMU mirror. Please see http://wiki.qemu.org/Contribute/SubmitAPatch for how to submit changes to QEMU. Pull Requests are ignored. Please only use release tarballs from the QEMU website.

modelsim_docker. Dockerfile and libraries necessary for Modelsim ASE on Ubuntu 18.04