NtReadVirtualMemoryEx - NtDoc

#ifndef _NTMMAPI_H
// Virtual memory
#if (PHNT_MODE != PHNT_MODE_KERNEL)
#if (PHNT_VERSION >= PHNT_WIN11)

// rev
NTSYSCALLAPI
NTSTATUS
NTAPI
NtReadVirtualMemoryEx(
    _In_ HANDLE ProcessHandle,
    _In_opt_ PVOID BaseAddress,
    _Out_writes_bytes_(BufferSize) PVOID Buffer,
    _In_ SIZE_T BufferSize,
    _Out_opt_ PSIZE_T NumberOfBytesRead,
    _In_ ULONG Flags
    );

#endif
#endif
#endif
View code on GitHub

#ifndef _NTZWAPI_H

NTSYSCALLAPI
NTSTATUS
NTAPI
ZwReadVirtualMemoryEx(
    _In_ HANDLE ProcessHandle,
    _In_opt_ PVOID BaseAddress,
    _Out_writes_bytes_(BufferSize) PVOID Buffer,
    _In_ SIZE_T BufferSize,
    _Out_opt_ PSIZE_T NumberOfBytesRead,
    _In_ ULONG Flags
    );

#endif
View code on GitHub