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SysFlip

A tool for modifying the hash of signed driver files (sys, exe, dll) without breaking certificate validation by padding the WIN_CERTIFICATE structure with random bytes. This tool can be used against EDR/AV solutions that block vulnerable drivers based on hash.

Usage

SysFlip <input_file> <output_file>

Example:
  SysFlip rtkio.sys rtkio_modified.sys

Usage

DriverLoad

How it works

Embeds random data into the certificate table of authenticode signed PE files. Since certain PE fields are excluded from hash calculation during signing, the file hash changes while the signature remains valid.

Compilation

make

References

Credits

Based on SigFlip by med0x2e

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Tool for modifying hash of signed driver files

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