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UEFI Utility to Read TPM 1.2 PCRs

In this post, I provide the source code for a UEFI shell utility to print out all the Platform Configuration Registers (PCRs) for a TPM 1.2 (Trusted Platform Module, version 1.2) and briefly discuss SRTM versus DRTM.

Examining Intel Microcode in Lenovo Firmware Updates

This post demonstrates how to extract Intel microcode updates from a Lenovo firmware update using UEFItool and subsequently use an 010 Editor template to extract useful information from the extracted Intel microcode updates.

RNG Protocol Error in Lenovo ThinkPad Firmware

This post discusses the UEFI 2.4 Random Number Generator protocol and Lenovo’s current implementation of the protocol and suggests there is an error in their implementation.

Lenovo ThinkPwn POC Ported to UDK2015

This blog contains the source code for my UDK2015 port of the ThinkPwn Oday proof of concept demonstration.

UEFI-based Windows 10 Platform - Failure to Boot Due to Missing or Corrupt BCD

This post describes the role of the BCD store in booting Windows 10 on a UEFI-based platform. It describes a number of other files used in the boot process and a workaround for booting your system from the UEFI shell should you encounter the 0xc0000034 error code.