chapter4-demo3 syscalls

[N00BIER]

In chapter4-demo3 you say:
// Code below is adapted from @modexpblog. Read linked article for more details. // https://www.mdsec.co.uk/2020/12/bypassing-user-mode-hooks-and-direct-invocation-of-system-calls-for-red-teams
However, what you do is just getting syscall addresses from the ntdll.dll that has been already loaded into the process. Most likely, they would have been hooked by EDR. Whereas the author's idea was to get syscalls from LdrpThunkSignature structure and load a new copy of ntdll.dll into the process space.

Also, direct syscall for NtCreateThreadEx does not work for some reason...

UPD re Syscall Numbers: for some reason the syscall numbers returned by SW3_GetSyscallNumber are incorrect. In my case, the discrepancy between returned value and correct one is 4.