/*
	在應用層通過修改PEB結構中的模塊鏈，來隱藏本進程中的某個模塊
	測試結果：對ProcessExplorer有效，對IS無效

*/

#include "stdafx.h"
#include <windows.h>
#include <stdio.h>

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

typedef struct _LDR_MODULE {
  LIST_ENTRY InLoadOrderModuleList;
  LIST_ENTRY InMemoryOrderModuleList;
  LIST_ENTRY InInitializationOrderModuleList;
  PVOID BaseAddress;
  PVOID EntryPoint;
  ULONG SizeOfImage;
  UNICODE_STRING FullDllName;
  UNICODE_STRING BaseDllName;
  ULONG Flags;
  SHORT LoadCount;
  SHORT TlsIndex;
  LIST_ENTRY HashTableEntry;
  ULONG TimeDateStamp;
} LDR_MODULE, *PLDR_MODULE;

typedef struct _PEB_LDR_DATA
{
  ULONG               Length;
  BOOLEAN             Initialized;
  BYTE        reserved[3];
  PVOID               SsHandle;
  LIST_ENTRY          InLoadOrderModuleList;
  LIST_ENTRY          InMemoryOrderModuleList;
  LIST_ENTRY          InInitializationOrderModuleList;
} PEB_LDR_DATA, *PPEB_LDR_DATA;

typedef struct _NT_PEB 
{
  BOOLEAN InheritedAddressSpace;
  BOOLEAN ReadImageFileExecOptions;
  BOOLEAN BeingDebugged;
  BOOLEAN Spare;
  HANDLE Mutant;
  PVOID ImageBaseAddress;
  PPEB_LDR_DATA LoaderData;
  PVOID ProcessParameters;//PRTL_USER_PROCESS_PARAMETERS
  PVOID SubSystemData;
  PVOID ProcessHeap;
  PVOID FastPebLock;
  PVOID FastPebLockRoutine;//PPEBLOCKROUTINE
  PVOID FastPebUnlockRoutine;//PPEBLOCKROUTINE
  ULONG EnvironmentUpdateCount;
  PVOID *KernelCallbackTable;
  PVOID EventLogSection;
  PVOID EventLog;
  PVOID FreeList;//PPEB_FREE_BLOCK
  ULONG TlsExpansionCounter;
  PVOID TlsBitmap;
  ULONG TlsBitmapBits[0x2];
  PVOID ReadOnlySharedMemoryBase;
  PVOID ReadOnlySharedMemoryHeap;
  PVOID *ReadOnlyStaticServerData;
  PVOID AnsiCodePageData;
  PVOID OemCodePageData;
  PVOID UnicodeCaseTableData;
  ULONG NumberOfProcessors;
  ULONG NtGlobalFlag;
  BYTE Spare2[0x4];
  LARGE_INTEGER CriticalSectionTimeout;
  ULONG HeapSegmentReserve;
  ULONG HeapSegmentCommit;
  ULONG HeapDeCommitTotalFreeThreshold;
  ULONG HeapDeCommitFreeBlockThreshold;
  ULONG NumberOfHeaps;
  ULONG MaximumNumberOfHeaps;
  PVOID **ProcessHeaps;
  PVOID GdiSharedHandleTable;
  PVOID ProcessStarterHelper;
  PVOID GdiDCAttributeList;
  PVOID LoaderLock;
  ULONG OSMajorVersion;
  ULONG OSMinorVersion;
  ULONG OSBuildNumber;
  ULONG OSPlatformId;
  ULONG ImageSubSystem;
  ULONG ImageSubSystemMajorVersion;
  ULONG ImageSubSystemMinorVersion;
  ULONG GdiHandleBuffer[0x22];
  ULONG PostProcessInitRoutine;
  ULONG TlsExpansionBitmap;
  BYTE TlsExpansionBitmapBits[0x80];
  ULONG SessionId;
}NT_PEB, *pNT_PEB;

typedef struct _NT_TEB
{
  NT_TIB Tib;                         /* 00h */
  PVOID EnvironmentPointer;           /* 1Ch */
//  CLIENT_ID Cid;                      /* 20h */
  BYTE Reserved1[8];				 //占用8個字節
  PVOID ActiveRpcInfo;                /* 28h */
  PVOID ThreadLocalStoragePointer;    /* 2Ch */
  pNT_PEB Peb;                       /* 30h */
  ULONG LastErrorValue;               /* 34h */
  ULONG CountOfOwnedCriticalSections; /* 38h */
  PVOID CsrClientThread;              /* 3Ch */
  void* Win32ThreadInfo;        /* 40h */
  ULONG Win32ClientInfo[0x1F];        /* 44h */
  PVOID WOW32Reserved;                /* C0h */
  LCID CurrentLocale;                 /* C4h */
  ULONG FpSoftwareStatusRegister;     /* C8h */
  PVOID SystemReserved1[0x36];        /* CCh */
  PVOID Spare1;                       /* 1A4h */
  LONG ExceptionCode;                 /* 1A8h */
  UCHAR SpareBytes1[0x28];            /* 1ACh */
  PVOID SystemReserved2[0xA];         /* 1D4h */
//  GDI_TEB_BATCH GdiTebBatch;          /* 1FCh */
  BYTE Reserved3[0x4e0];				 //占用8個字節
  ULONG gdiRgn;                       /* 6DCh */
  ULONG gdiPen;                       /* 6E0h */
  ULONG gdiBrush;                     /* 6E4h */
// CLIENT_ID RealClientId;             /* 6E8h */
  BYTE Reserved2[8];				 //占用8個字節
  PVOID GdiCachedProcessHandle;       /* 6F0h */
  ULONG GdiClientPID;                 /* 6F4h */
  ULONG GdiClientTID;                 /* 6F8h */
  PVOID GdiThreadLocaleInfo;          /* 6FCh */
  PVOID UserReserved[5];              /* 700h */
  PVOID glDispatchTable[0x118];       /* 714h */
  ULONG glReserved1[0x1A];            /* B74h */
  PVOID glReserved2;                  /* BDCh */
  PVOID glSectionInfo;                /* BE0h */
  PVOID glSection;                    /* BE4h */
  PVOID glTable;                      /* BE8h */
  PVOID glCurrentRC;                  /* BECh */
  PVOID glContext;                    /* BF0h */
  LONG LastStatusValue;        /* BF4h */
  UNICODE_STRING StaticUnicodeString; /* BF8h */
  WCHAR StaticUnicodeBuffer[0x105];   /* C00h */
  PVOID DeallocationStack;            /* E0Ch */
  PVOID TlsSlots[0x40];               /* E10h */
  LIST_ENTRY TlsLinks;                /* F10h */
  PVOID Vdm;                          /* F18h */
  PVOID ReservedForNtRpc;             /* F1Ch */
  PVOID DbgSsReserved[0x2];           /* F20h */
  ULONG HardErrorDisabled;            /* F28h */
  PVOID Instrumentation[0x10];        /* F2Ch */
  PVOID WinSockData;                  /* F6Ch */
  ULONG GdiBatchCount;                /* F70h */
  USHORT Spare2;                      /* F74h */
  BOOLEAN IsFiber;                    /* F76h */
  UCHAR Spare3;                       /* F77h */
  ULONG Spare4;                       /* F78h */
  ULONG Spare5;                       /* F7Ch */
  PVOID ReservedForOle;               /* F80h */
  ULONG WaitingOnLoaderLock;          /* F84h */
  ULONG Unknown[11];                  /* F88h */
  PVOID FlsSlots;                     /* FB4h */
  PVOID WineDebugInfo;                /* Needed for WINE DLL's  */
}NT_TEB, *pNT_TEB;

BOOL HideModuleByHandle(HMODULE hModule);

int main(int argc, char* argv[])
{
	HMODULE hModule = GetModuleHandle("ntdll.dll") ;
	HideModuleByHandle(hModule) ;
	getchar() ;
	return 0;
}


NT_TEB*  GetCurrentThreadTEB()
{
  NT_TEB* pTeb=NULL;

  _asm
  {
    mov    eax,fs:[0x18]	//獲取本進程的主線程的TEB
    mov    pTeb,eax
  }
  return pTeb;
}

BOOL HideModuleByHandle(HMODULE hModule)
{
  NT_TEB* pTeb = GetCurrentThreadTEB();
  NT_PEB* pPeb = pTeb->Peb;
  PPEB_LDR_DATA pLdrData = pPeb->LoaderData;
  PLDR_MODULE  ListHead = (PLDR_MODULE)(&(pLdrData->InLoadOrderModuleList));
  PLDR_MODULE pFirstLdrModule = (PLDR_MODULE)pLdrData->InLoadOrderModuleList.Flink; 
  PLDR_MODULE pLdrModule = pFirstLdrModule;
//   PLDR_MODULE pLastModule,pNextModule;
  
  //LoadOrderModuleList
  while(pLdrModule != ListHead)
  {
    //判斷是否是我們要屏蔽的模塊
    if(pLdrModule->BaseAddress == hModule)
    {
      pLdrModule->InLoadOrderModuleList.Flink->Blink = pLdrModule->InLoadOrderModuleList.Blink;
      pLdrModule->InLoadOrderModuleList.Blink->Flink = pLdrModule->InLoadOrderModuleList.Flink;

      pLdrModule->InMemoryOrderModuleList.Flink->Blink = pLdrModule->InMemoryOrderModuleList.Blink;
      pLdrModule->InMemoryOrderModuleList.Blink->Flink = pLdrModule->InMemoryOrderModuleList.Flink;

      pLdrModule->InInitializationOrderModuleList.Flink->Blink = pLdrModule->InInitializationOrderModuleList.Blink;
      pLdrModule->InInitializationOrderModuleList.Blink->Flink = pLdrModule->InInitializationOrderModuleList.Flink;
    }

	//移動到鏈表的下一個
    pLdrModule = (PLDR_MODULE)pLdrModule->InLoadOrderModuleList.Flink;

  } 

  return TRUE;
}