[[escafandra]]

Usa NtQueryInformationProcess

  
typedef struct _PROCESS_BASIC_INFORMATION {
    PVOID Reserved1;
    //PPEB PebBaseAddress;
    PVOID PebBaseAddress;
    PVOID Reserved2[2];
    ULONG_PTR UniqueProcessId;
    PVOID Reserved3;
} PROCESS_BASIC_INFORMATION;

PROCESS_BASIC_INFORMATION PBI;
NtQueryInformationProcess(GetCurrentProcess(), 0, &PBI, sizeof(PBI), 0);

Saludos.