AI Writes Kernel Drivers for Dead Windows Versions in Hours, Not Months

A single developer used generative AI to produce functioning kernel-mode drivers that bring USB 3.x, USB4, and Thunderbolt 3/4 support to Windows versions Microsoft abandoned two decades ago. The code targets Windows 98 Second Edition, ME, 2000, XP, Vista, and 7 — operating systems that collectively register below 0.5% of global desktop share but remain alive in industrial control systems, medical devices, and retro-computing collections.

Yeo Kheng Meng, a Singapore-based software engineer, published the drivers this month after prompting a large language model to generate Windows Driver Model and Kernel-Mode Driver Framework code compatible with the NDIS 5.x and 6.x stacks. The model produced compilable C sources that handle controller enumeration, interrupt routing, and power management across six distinct kernel architectures without human line-by-line authorship.

Traditional driver development for a single legacy Windows version typically requires a kernel engineer three to six months, including WHQL certification testing. Meng’s AI-assisted effort produced six drivers in roughly 40 hours of prompting, iteration, and debugging on period-correct hardware. The resulting binaries load on vanilla installations without test-signing overrides, a feat that normally demands Microsoft’s cross-certificate pipeline.

The economic implications extend beyond hobbyists. Manufacturing lines running Windows 2000-based PLCs, point-of-sale terminals on XP Embedded, and diagnostic equipment tied to Vista kernels frequently lack modern I/O options. OEMs typically quote $150,000–$300,000 per driver for such ports, citing the scarcity of engineers fluent in HAL extensions and IRP handling for pre-Vista kernels. AI-generated alternatives collapse that cost to compute credits and verification labor.

Security researchers caution that plugging Thunderbolt 4 controllers into unpatched Windows XP machines expands the attack surface dramatically. The drivers implement no mitigations for Thunderclap DMA vulnerabilities or USB descriptor parsing flaws patched in supported Windows releases. Meng’s release notes explicitly label the code “experimental” and advise air-gapped deployment only.

Microsoft declined to comment on the drivers. The company’s Extended Security Updates program ended for Windows 7 in January 2023 and for POSReady 2009 (XP Embedded) in April 2019. No official path exists for modern silicon support on these platforms.

Meng’s technical write-up, including build scripts for the Windows 98 DDK and XP WDK toolchains, is available on his blog at yeokhengmeng.com. The driver sources are hosted on GitHub under a BSD-3-Clause license.