00mjk / inside-vm

Detect if code is running inside a virtual machine (x86 and x86-64 only).

inside-vm

Detect if code is running inside a virtual machine.

Only works on x86 and x86-64.

How does it work

Measure average cpu cycles when calling cpuid and compare to a threshold, if the value is high assume code is running inside a VM.

Quick Start

git clone https://github.com/PicoJr/inside-vm
cd inside-vm/
cargo run --example test-inside-vm

output: avg cycles for __cpuid: 108

vs inside VM

[vagrant@archlinux vagrant]$ ./target/release/examples/test-inside-vm 

output: avg cycles for __cpuid: 30578

API

use inside_vm::inside_vm;

let inside = inside_vm();
println!("inside vm: {}", inside);

Credits

https://evasions.checkpoint.com/techniques/timing.html#difference-vm-hosts

Changelog

Please see the CHANGELOG for a release history.

License

Dual-licensed under MIT or the Apache License V2.0.