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What is this?

This is a small PoC (Proof of concept) that invokes NtCreateUserProcess to spawn a Command prompt. This also showcases PPID* (Parent Process ID) spoofing, where the parent is not the creator.

* You must have a valid handle to the parent process.

What is NtCreateUserProcess?

NtCreateUserProcess is lowest level API that spawns processes. Every WINAPI calls this.

Call chain from APIs to NtCreateUserProcess

  • kernel32.dll!CreateProcess
    • CreateProcessInternalW
      • ntdll.dll!NtCreateUserProcess

  • ntdll.dll!RtlCreateUserProcessEx
    • RtlpCreateUserProcess
      • ntdll.dll!NtCreateUserProcess

Requirements

Visual Studio
x86 or x64 machine (ARM or ARM64 is not tested)

Remarks

This API function is very buggy on Windows 10, that's where most other PoCs fail. Especially when the executable is Win32 (x86).

License

Please consider checking out my library Windows-Native