Ever so slowly, the main storage in our computers has been moving from spinning disks, to SSDs over SATA, to Flash drives connected to a PCI something or other. The lastest technology is NVMe — Non-Volitile Memory Express — a horribly named technology that puts a memory controller right on the chip. Intel has a PCI-based NVMe drive out, Samsung recently released an M.2 NVMe drive, and the iPhone 6S and 6S Plus are built around this storage technology.
New chips demand a reverse engineering session, and that’s exactly what [Ramtin Amin] did. He took a few of these chips out of an iPhone, created a board that will read them, and managed to analize the firmware.
Any reverse engineering will begin with desoldering the chip. This is easy enough, with the real trick being getting it working again outside whatever system it was removed from. For this, [Ramtin] built his own PCIe card with a ZIF socket. This socket was custom-made, but the good news is you can buy one from ITEAD. Yes, it is expensive — that’s what you get with a custom-made ZIF socket.
With the chip extracted, a custom PCIe card, and a bit of work with the NVMe implementation for Linux, [Ramtin] had just about everything working. Eventually, he was able to dump the entire file system on the chip, allowing anyone to theoretically back up the data on their iPhone or MacBook Air. Of course, and especially for the iPhone, this data is encrypted. It’s not possible to clone an iPhone using this method, but it is a remarkably deep dive into the hardware that makes our storage tick.”