CVE-2021-3972

CVE-2021-3972 poc code without other thing BYTE value = 0x1; SetFirmwareEnvironmentVariableExT"ChgBootSecureBootDisable",T"6ACCE65D-DA35-4B39-B64B-5ED927A7DC7E",&value,sizeofBYTE,0x7;...

CustomProcessingUnit

Custom Processing Unit Custom Processing Unit is the first dynamic analysis framework able to hook, patch and trace CPU microcode at the software level. It works by leveraging undocumented instructions in Intel CPUs that allow access to the CRBUS. Using our microcode decompiler we reverse...

ida-efitools2

About It is an IDA plugin for extending UEFI reverse engineering capabilities. Based on ida-efitools with a bunch of fixes and new features. Works with both Python 2 and Python 3. Supports outdated versions of IDA Pro 7.x with no guarantees. Features GUIDs defining Structures propagating register...

edk2

============== EDK II Project A modern, feature-rich, cross-platform firmware development environment for the UEFI and PI specifications from www.uefi.org. .. image::...

bitpixie

bitpixie Full blog post here Main References syss blog post Syss's Github repository Bitpixie BitLocker Exploit Implementation Virtual machine reproduction. The local machine attacker machine uses Ubuntu 22.04.5 LTS system, while the victim machines are Windows 10 21H2 19041.1 and Windows 11 21H2...

Silverseal

Silverseal - Linux Bootkit and Rust Kernel Rootkit Framework Silverseal is an open-source Linux bootkit research framework written in Rust. It demonstrates how a UEFI bootkit can hook the early Linux kernel boot process to persistently and stealthily load a Rust-based kernel module rootkit. The...

CVE-2026-25250

🕷️ CVE-2026-25250: Improper Trusted Bootloader Chain Validation A Microsoft-signed third-party bootloader that loads a secondary EFI binary with no signature or integrity verification, collapsing the Secure Boot chain of trust from within. 📑 Table of Contents Research Context Official References...

virt-firmware

Tools for ovmf / armvirt firmware volumes This is a small collection of tools for edk2 firmware images. They support decoding and printing the content of firmware volumes. Variable stores OVMFVARS.fd can be modified, for example to enroll secure boot certificates. virt-fw-dump Decodes and prints...

CVE-2022-34303

🕷️ CVE-2022-34303 - CryptoPro Boot Loader Vulnerability CryptoPro Secure Disk UEFI Shell - Bring Your Own Vulnerable UEFI Application BYOVUA - Secure Boot bypass via signed UEFI Shell and gSecurity2 corruption. 📑 Table of Contents Overview Background Bring Your Own Vulnerable UEFI Application The...

CVE-2022-34301

🕷️ CVE-2022-34301 - Eurosoft Boot Loader Vulnerability Eurosoft Pc-Check UEFI Diagnostics Shell - Bring Your Own Vulnerable UEFI Application BYOVUA - Secure Boot bypass via signed UEFI Shell and gSecurity2 corruption. 📑 Table of Contents Overview Background Bring Your Own Vulnerable UEFI...

UEFI-Security-Research-Howyar-SysReturn-NetCopy

🌊 UEFI Security Research - Howyar SysReturn NetCopy Under the cloak of Secure Boot, some architectures sink deeper than the vulnerabilities that exposed them. Some binaries are revoked. Some patches are shipped. But deep below the surface, old habits leave traces. This is what remains when a...

SmmBackdoor

SMM backdoor for UEFI based platforms !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! This is legacy abandoned project, for current version of the backdoor check SMM Backdoor Next Gen project page and its documentation: https://github.com/Cr4sh/SmmBackdoorNg...

CVE-2026-79298

🐞 CVE-2026-79298: Incomplete Remediation of UEFI Secure Boot Bypass in Howyar SysReturn A vulnerability was patched. A binary was revoked. But only half the architecture was fixed. Eighteen months later, the IA-32 boot path still carried the same custom PE loader, the same bypassed Secure Boot...

uefi_retool

uefiretool A tool for UEFI firmware reverse engineering. UEFI firmware analysis with uefiretool script Usage: Copy idaplugin/uefianalyser.py script and idaplugin/uefianalyser directory to IDA plugins directory Edit config.json file PEDIR is a directory that contains all executable images from the...

ghidra-firmware-utils

Ghidra Firmware Utilities Various modules for Ghidra to assist with PC firmware reverse engineering. This was accepted as a coreboot project for GSoC 2019. Features PCI option ROM loader Implements a FS loader for PCI option ROMs handles hybrid ROMs with multiple images, e.g. legacy x86 + UEFI...

shim-review

This repo is for review of requests for signing shim. To create a request for review: clone this repo preferably fork it edit the template below add the shim.efi to be signed add build logs add any additional binaries/certificates/SHA256 hashes that may be needed commit all of that tag it with a...

efi_fuzz

efifuzz A simple, coverage-guided fuzzer for UEFI NVRAM variables. Based on Qiling and AFL++. Written by Itai Liba @liba2k and Assaf Carlsbad @assafcarlsbad. Usage Using Docker environment 1. Build image: docker build -t efifuzz . 2. Test environment: docker run -v $PWD:/efifuzz -it efifuzz sh -c...

FwHunt

FwHunt The Binarly Firmware Hunt FwHunt rule format was designed to scan for known vulnerabilities in UEFI firmware. Usage FwHunt rules are designed to be used with Binarly's FwHunt Community Scanner; full installation instructions and usage information can be found in its README...

CVE-2022-21894-Payload-New

This is a simple example payload for CVE-2022-21894 that demonstrates how an attacker could map a second stage payload in order to be able to call EFI services. A writeup of this vulnerability can be viewed here: https://github.com/Wack0/CVE-2022-21894. The code in this repository extends the PoC...

ida-efiutils

EFI scripts for IDA Pro Some IDA scripts to assist with reverse engineering EFI executables. This package contains the following files: 1. efiutils.py - IDAPython module with some helper functions 2. efiguids.py - A collection of known GUIDs for EFI protocols 3. efiguidsami.py - A collection of...