I reversed Tower of Fantasy's anti-cheat driver: a BYOVD toolkit never loaded

Re:I reversed Tower of Fantasy's anti-cheat driver: a BYOVD ... by 15155 on Friday February 06, 2026 @04:28AM (#46910776)

> attach malicious devices to the PCI bus to DMA sensitive data

How do you do this in modern system with TPMs and IOMMU enabled?

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Re:I reversed Tower of Fantasy's anti-cheat driver: a BYOVD ... by charcircuit on Friday February 06, 2026 @04:49AM (#46910907)

Sadly not all Windows machines are able to use kernel DMA protection, so for those machines nothing will stop you.

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Re:I reversed Tower of Fantasy's anti-cheat driver: a BYOVD ... by 15155 on Friday February 06, 2026 @09:19AM (#46913129)

The obvious next step is to disallow those elderly machines once a critical mass of users have modern-enough equipment. We're almost there.

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Re:I reversed Tower of Fantasy's anti-cheat driver: a BYOVD ... by direwolf20 on Friday February 06, 2026 @05:51AM (#46911324)

You pretend to be a device with a driver not compatible with IOMMU

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Re:I reversed Tower of Fantasy's anti-cheat driver: a BYOVD ... by 15155 on Friday February 06, 2026 @09:22AM (#46913176)

This is a good move, but why isn't the anti-cheat software just refusing to operate on systems with these devices attached?

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Re:I reversed Tower of Fantasy's anti-cheat driver: a BYOVD ... by direwolf20 on Saturday February 07, 2026 @04:51AM (#46922613)

Because banning players from playing your game leads to refunds and bad publicity

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Re:I reversed Tower of Fantasy's anti-cheat driver: a BYOVD ... by uhuhuhuhuhuh on Friday February 06, 2026 @04:23PM (#46918340)

Flash custom firmware emulating some benign "donor card".

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