QEMU
iPhone 11 emulated on QEMU
...It extends QEMU’s general-purpose machine emulation capabilities by introducing support for Apple-specific hardware components and boot processes. The project enables researchers to boot and run versions of iOS, including the ability to restore firmware images and interact with the system through debugging tools. It relies on dynamic binary translation and system-level emulation to simulate the ARM-based architecture used in modern iPhones. Due to the complexity of Apple’s ecosystem, the emulator requires extensive patching of the kernel and firmware to function correctly, making it primarily a research and experimentation tool. It has been used in security research contexts to explore iOS internals, including kernel behavior and system services.