Examples of leaking Kernel Mode information from User Mode on Windows
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README.md

Windows Kernel Address Leaks

This repository aims to provide functioning code that demonstrated usage of various different ways to gain access to Kernel Mode pointers in Windows from User Mode. A green ticket indicates a leak which works from a low integrity process and a blue tick indicates a leak which requires a medium integrity process.

Technique 7 8 8.1 10 - 1511 10 - 1607 10 - 1703 10 - 1703 + VBS
NtQuerySystemInformation:
    SystemHandleInformation
    SystemLockInformation
    SystemModuleInformation
    SystemProcessInformation
    SystemBigPoolInformation
System Call Return Values
Win32k Shared Info User Handle Table
Descriptor Tables
HMValidateHandle
GdiSharedHandleTable
DesktopHeap

The following techniques requiring non-standard permissions.

Technique Permission Needed 7 8 8.1 10 - 1511 10 - 1607 10 - 1703 10 - 1703 + VBS
NtSystemDebugControl:
    SysDbgGetTriageDump
SeDebugPrivilege
SeSystemProfilePrivilege

Further Details

Some more details on techniques which no longer work and what was changed:

NtQuerySystemInformation/System Call Return Values:

https://samdb.xyz/revisiting-windows-security-hardening-through-kernel-address-protection/

Win32k Shared Info User Handle Table

notes/gSharedInfo.md - A brief look at the changes made in the Creators Update/1703. Not very concrete or detailed, I might revisit it and create something more detailed or maybe someone else will.

GdiSharedHandleTable / Desktop Heap

Pending

NPIEP

notes/NPIEP.md - A very brief "it's a thing" write up, more details pending on me getting a test laptop back when the summer interns are gone...

Attributions

I have referenced where I read about a technique and where specific structs etc have come from in the code, however these may not be the true original sources of the information :)
A lot of the function prototypes and struct definitions are taken from ReactOS.
Green Tick Icon By FatCow (http://www.fatcow.com/free-icons) [CC BY 3.0], via Wikimedia Commons
Cross Icon By Cäsium137 [Public domain], via Wikimedia Commons
Blue Tick By Gregory Maxwell, User:David Levy, Wart Dark (en:Image:Blue check.png) [GFDL 1.2 (http://www.gnu.org/licenses/old-licenses/fdl-1.2.html)], via Wikimedia Commons