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AMSI Bypass

xiosec - AMSI-Bypass stars - AMSI-Bypass forks - AMSI-Bypass GitHub release License issues - AMSI-Bypass

This repository contains techniques for Antimalware Scan Interface (AMSI) bypass.

Certain techniques may have been altered or rewritten.

Patching AMSI AmsiScanBuffer

This technique prevents the buffer from being scanned by antiviruses by patching the AmsiScanBuffer function.

Changes: Convert to in memory AMSI Bypass.

The problem was that other scripts used Add-Type. When Add-Type is used, the code is written to a temporary file and then csc.exe is used to compile a binary that stays on disk. This creates a problem when you want to remain furtive and don't want to write anything on the disk. amsi patch

amsi patch

License

Released under GPL-3.0 by @xiosec.