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vss-fr2system
Two small tools that turn an arbitrary file read bug on Windows into a SYSTEM shell.
vss_freeze/ — creates a Volume Shadow Copy as a standard user, then holds it open so you have time to read the SAM/SECURITY/SYSTEM hives out of it
fr2system/ — takes the hives you copied out, decrypts the local NTLM hashes offline, and pops a SYSTEM shell
Together with any arb-file-read primitive that runs as SYSTEM (or anything that can read out of \\?\GLOBALROOT\Device\HarddiskVolumeShadowCopyN\...), this is a complete std-user to SYSTEM chain on a default Win10/Win11 box
github.com/sailay1996/vss…

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