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ufrisk / pcileech-fpga

FPGA modules used together with the PCILeech Direct Memory Access (DMA) Attack Software
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Does the PCIe Squirrel Card Function During Pre-Boot Stage (MRC or PEI) before Booting Up to DXE or OS phase #137

Closed sridhaleech closed 10 months ago

sridhaleech commented 1 year ago

Hi Frish,

I'm using the PCIe Squirrel 64-bit Card for my testing.

My test scenario involves the system booting in the initial stage( BIOS ) and attempting to perform a DMA attack during stages like PEI (Pre-EFI Initialization Phase) and MRC (Memory Reference Code).

Question 1: Is it expected that DMA to DRAM will get any meaningful data during the MRC and PEI stages?

Question 2: How can I confirm whether my PCIe Squirrel card is being really detected during the MRC and PEI stages?

Question 3: Does the absence of detection in the PCI information below indicate that the PCIe Leech card is not being recognized?

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ufrisk commented 1 year ago

I haven't researched this topic. But best wishes with your research 👍