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PCI Express DIY hacking toolkit

This repository contains a set of tools and proof of concepts related to PCI-E bus and DMA attacks. It includes HDL design which implements software controllable PCI-E gen 1.1 endpoint device for Xilinx SP605 Evaluation Kit with Spartan-6 FPGA. In comparison with popular USB3380EVB this design allows to operate with raw Transaction Level Packets (TLP) of PCI-E bus and perform full 64-bit memory read/write operations. It’s early version of my first much or less complicated FPGA project, so the speed is quite slow (around 1-2 Mb/s), but in upcoming releases it will be significantly increased by connecting PCI-E endpoint to MicroBlaze soft processor with AXI DMA engine. However, even such low speed is more than enough for reliable implementation of various practical attacks over PCI-E bus: to demonstrate applied use cases of the design, there’s a tool for pre-boot DMA attacks on UEFI based machines which allow executing arbitrary UEFI DXE drivers during platform init. Another example shows how to use pre-boot DMA attacks to inject Hyper-V VM exit handler backdoor into the virtualization-based security enabled Windows 10 Enterprise running on UEFI Secure Boot enabled platform. Provided Hyper-V backdoor PoC might be useful for reverse engineering and exploit development purposes, it provides an interface for inspecting of hypervisor state (VMCS, physical/virtual memory, registers, etc.) from guest partition and perform the guest to host VM escape attacks.

https://github.com/Cr4sh/s6_pcie_microblaze

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