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[讨论]r3隐藏dll,xuetr看不见?
发表于: 2010-11-27 13:05 11237

[讨论]r3隐藏dll,xuetr看不见?

AsmBrat 活跃值
2010-11-27 13:05
11237
求思路?
见过实现的, 但是dllmain里加了vmp 不好扣.

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最新回复 (9)
lovehuaibb
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2 楼
Memory Loader 可以让xuetr看不到模块 其他方法没玩过
Delphi代码
单元 http://www.2ccc.com/article.asp?articleid=5784
var
  Buf:array [1..256] of Char;
  Load:TMemoryStream;
begin
 GetModuleFileNameA(HInstance, @Buf, SizeOf(Buf));
 if Pos('.', Buf) > 0 then
 begin
    Load := TMemoryStream.Create;
    Load.LoadFromFile(Buf);  
    memLoadLibrary(Load.Memory);
    Load.Free;
    FreeLibraryAndExitThread(HInstance, 0); 
 end else begin
  // 你想干啥干啥
 end;
end.
2010-11-27 19:09
0
AsmBrat
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3 楼
[QUOTE=lovehuaibb;895779]Memory Loader 可以让xuetr看不到模块 其他方法没玩过
Delphi代码
单元 http://www.2ccc.com/article.asp?articleid=5784

var
  Buf:array [1..256] of Char;
  Load:TMemory...[/QUOTE]
不好意思啊 楼上的 我要说一下, 必须是排除了自己实现load pe的方法.
因为我见的样本里,他直接调用了loadlibrary, 所以我可以确定他是在r3下就隐藏了自身.而没有调用peload的方法
2010-11-27 23:20
0
Mxixihaha
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4 楼
你很有可能见到的是驱动级的吧...只是驱动是用DLL资源写出来的.

BOOL WINAPI DllMain(
  HINSTANCE hinstDLL,  // handle to the DLL module
  DWORD fdwReason,     // reason for calling function
  LPVOID lpvReserved   // reserved
)
{
   if(fdwReason==DLL_PROCESS_ATTACH)
{
     //释放驱动
   //加载驱动
   //驱动隐藏
}
}
........................
2010-11-28 19:00
0
AsmBrat
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5 楼
楼上的大哥, 我已经说明的很清楚了鸟. 是纯ring3下执行的.
2010-11-28 22:54
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gezz
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6 楼
MARK 下 一直关注ING
2010-11-29 01:26
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AsmBrat
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7 楼
手上已经有已知的方法可以做到了 不过还是期待有高手能够透漏下.
2010-11-29 02:33
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loqich
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8 楼
以前写的lpk 代码是测试用的 很乱 方法很多地方都有说的 我的代码也是东抄西抄来的


#define _WIN32_WINNT 0x0501

#include <windows.h>
#include <stdio.h>
#include <psapi.h>
#include <tchar.h>
#include <ImageHlp.h>
#pragma comment(linker, "/SECTION:.text,REW" ) //设PE节：.text,可读可执行
//#pragma comment(linker, "/entry:DllMain")

typedef void  (__stdcall  * MYAPI)();



#pragma comment(lib, "Psapi.lib")
#pragma comment(lib, "ImageHlp.lib")

HMODULE lpk_module = NULL;
HMODULE g_module = NULL;
BOOL	g_bInit = FALSE;


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

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


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

void ApiInit();

MYAPI pLpkInitialize;
MYAPI pLpkTabbedTextOut;
MYAPI pLpkDllInitialize;
MYAPI pLpkDrawTextEx;
MYAPI pLpkEditControl;
MYAPI pLpkExtTextOut;
MYAPI pLpkGetCharacterPlacement;
MYAPI pLpkGetTextExtentExPoint;
MYAPI pLpkPSMTextOut;
MYAPI pLpkUseGDIWidthCache;
MYAPI pftsWordBreak;




void HideLibrary(HMODULE hModule, LPVOID pCallBackAddr, LPVOID lParam);

typedef struct
{
	HMODULE lpDllBase;
	LPVOID lpNewDllBase;
}UNLOADLIB_CALLBACK, *PUNLOADLIB_CALLBACK;

typedef
LPVOID WINAPI VIRTUALALLOC(
						   LPVOID lpAddress,
						   SIZE_T dwSize,
						   DWORD flAllocationType,
						   DWORD flProtect
						   );


typedef
BOOL WINAPI HEAPDESTROY(
						HANDLE hHeap
						);

typedef BOOL WINAPI FREELIBRARY(
			HMODULE hLibModule
			);


typedef void *    __cdecl MEMCPY(void *, const void *, size_t);


DWORD WINAPI xThread(LPVOID lParam)
{
	while (TRUE)
	{
		Sleep(10000);
		MessageBeep(MB_OK);
	//	MessageBox(NULL, "Test", "Test", MB_OK);
	}
}

DWORD WINAPI UnLoadLibrary(LPVOID lParam)
{
	//__asm INT 3

	BYTE HeapDestroy_HookCode_bak[4];
	BYTE HeapDestroy_HookCode[4] = "\xC2\x04\x00";//RETN 0004
	MODULEINFO modinfo;
	DWORD oldProtect;

	PUNLOADLIB_CALLBACK cbFunc = (PUNLOADLIB_CALLBACK)lParam;

	HMODULE hDllInstance = cbFunc->lpDllBase;
	char dllpath_bak[MAX_PATH];

	GetModuleFileName(hDllInstance, dllpath_bak, sizeof(dllpath_bak));
	GetModuleInformation(GetCurrentProcess(), hDllInstance, &modinfo, sizeof(MODULEINFO));

	//FreeLibrary之后原来存放api地址的内存也会被释放，
	//但是FreeLibrary之后还有些动作，趁现在还没free，关键API记下来
	VIRTUALALLOC *_VirtualAlloc = (VIRTUALALLOC*)
		GetProcAddress(GetModuleHandle("kernel32.dll"), "VirtualAlloc");
	MEMCPY         *_memcpy         = (MEMCPY*)
		GetProcAddress(GetModuleHandle("ntdll.dll"), "memcpy");

	FREELIBRARY         *_FreeLibrary         = (FREELIBRARY*)
		GetProcAddress(GetModuleHandle("kernel32.dll"), "FreeLibrary");

	//这个很关键，并不是我要调用，是 FreeLibrary 时系统会调用，我要hook它,
	//不能给系统破坏这个heap，否则之后的dll貌似能工作，
	//但却不能用new或malloc申请内存, VirtualAlloc可以代替之，
	//但如果改写好多代码是划不来的，况且一些代码不好改,如list<T>的push内部的new

	HEAPDESTROY *_HeapDestroy    = (HEAPDESTROY*)
		GetProcAddress(GetModuleHandle("kernel32.dll"), "HeapDestroy");

	VirtualProtect(_HeapDestroy, 3, PAGE_EXECUTE_READWRITE, &oldProtect);

	//修改第一条指令为直接返回
	_memcpy(HeapDestroy_HookCode_bak, _HeapDestroy, 3);
	_memcpy(_HeapDestroy, HeapDestroy_HookCode, 3);


	//Sleep(100);
	//终于到这里了~~~^_^!
	_FreeLibrary(hDllInstance);//释放

	//修复刚hook的函数
	_memcpy(_HeapDestroy, HeapDestroy_HookCode_bak, 3);
	//_memcpy(_RtlFreeHeap, RtlFreeHeap_HookCode_bak, 3);

	//在原来的dll基址申请同样大小的内存，并把之前的那份dll拷贝还原回去
	if(_VirtualAlloc(hDllInstance,
		modinfo.SizeOfImage,
		MEM_COMMIT|MEM_RESERVE,
		PAGE_EXECUTE_READWRITE) == NULL
		)
	{
		ExitProcess(0);
	}

	_memcpy(hDllInstance, cbFunc->lpNewDllBase, modinfo.SizeOfImage);
	return 0;
}


DWORD WINAPI HideLibrary02(HMODULE hMod)
{
	MODULEINFO modinfo;
	UNLOADLIB_CALLBACK cbFunc;

	cbFunc.lpDllBase = hMod;
	GetModuleInformation(GetCurrentProcess(), cbFunc.lpDllBase, &modinfo, sizeof(MODULEINFO));

	//申请一块和当前dll同样大小的内存
	cbFunc.lpNewDllBase = VirtualAlloc(NULL, modinfo.SizeOfImage, MEM_COMMIT|MEM_RESERVE, PAGE_EXECUTE_READWRITE);

	if(cbFunc.lpNewDllBase == NULL)
		return FALSE;

	//给当前dll做份拷贝，复制所有数据到刚申请的内存，
	CopyMemory(cbFunc.lpNewDllBase, modinfo.lpBaseOfDll, modinfo.SizeOfImage);

	//计算在copy中UnLoadLibrary的地址,并另起线程到该地址执行
	void *pNewUnLoadLibrary = LPVOID((DWORD)cbFunc.lpNewDllBase + (DWORD)UnLoadLibrary - (DWORD)modinfo.lpBaseOfDll);

	__asm
	{
		lea		eax, cbFunc
		push	eax
		call	pNewUnLoadLibrary
	}

	VirtualFree(cbFunc.lpNewDllBase, 0, MEM_DECOMMIT);

	HANDLE hThread = CreateThread(0,0, xThread, NULL, 0, NULL);
	CloseHandle(hThread);
	return TRUE;
}





void Hide(HMODULE hMod)
{
	PLIST_ENTRY Head,Cur;
	PPEB_LDR_DATA ldr;
	PLDR_MODULE ldm;
	__asm
	{
		mov eax , fs:[0x30]
		mov ecx , [eax + 0x0c] //Ldr
		mov ldr , ecx
	}
	Head = &(ldr->InLoadOrderModuleList);
	Cur = Head->Flink;
	do
	{
		ldm = CONTAINING_RECORD( Cur, LDR_MODULE, InLoadOrderModuleList);
		if( hMod == ldm->BaseAddress)
		{
			/*
			ldm->InLoadOrderModuleList.Blink->Flink =
				ldm->InLoadOrderModuleList.Flink;
			ldm->InLoadOrderModuleList.Flink->Blink =
				ldm->InLoadOrderModuleList.Blink; 
			ldm->InInitializationOrderModuleList.Blink->Flink =
				ldm->InInitializationOrderModuleList.Flink;
			ldm->InInitializationOrderModuleList.Flink->Blink =
				ldm->InInitializationOrderModuleList.Blink;  
			ldm->InMemoryOrderModuleList.Blink->Flink =
				ldm->InMemoryOrderModuleList.Flink;
			ldm->InMemoryOrderModuleList.Flink->Blink =
				ldm->InMemoryOrderModuleList.Blink;
				*/
			ldm->LoadCount = 1;		//	设置加载次数为1
			break;
		}
		Cur= Cur->Flink; 
	}while(Head != Cur);

	//FreeLibrary(hMod);

	HideLibrary02(g_module);
}

__declspec(naked) void LpkInitialize()
{
	__asm
	{
		pushfd
		cmp		g_bInit, 0
		jne		__init
		pushad
		call	ApiInit
		popad
__init:
		popfd
		jmp dword ptr [pLpkInitialize]
	}
}

__declspec(naked) void LpkDllInitialize()
{
	__asm
	{
		pushfd
		cmp		g_bInit, 0
		jne		__init
		pushad
		call	ApiInit
		popad
__init:
		popfd
		jmp dword ptr [pLpkDllInitialize]
	}
}



__declspec(naked) void LpkTabbedTextOut(){__asm jmp dword ptr [pLpkTabbedTextOut]}

__declspec(naked) void LpkDrawTextEx(){__asm jmp dword ptr [pLpkDrawTextEx]}

__declspec(naked) void LpkExtTextOut(){__asm jmp dword ptr [pLpkExtTextOut]}
__declspec(naked) void LpkGetCharacterPlacement(){__asm jmp dword ptr [pLpkGetCharacterPlacement]}
__declspec(naked) void LpkGetTextExtentExPoint(){__asm jmp dword ptr [pLpkGetTextExtentExPoint]}
__declspec(naked) void LpkPSMTextOut(){__asm jmp dword ptr [pLpkPSMTextOut]}
__declspec(naked) void LpkUseGDIWidthCache(){__asm jmp dword ptr [pLpkUseGDIWidthCache]}
__declspec(naked) void ftsWordBreak()
{
	__asm jmp dword ptr [pftsWordBreak]
	__asm nop
	__asm nop
	__asm nop
	__asm nop
}

__declspec(naked) void LpkEditControl()
{
	__asm nop
	__asm nop
	__asm nop
	__asm nop

	__asm nop
	__asm nop
	__asm nop
	__asm nop

	__asm nop
	__asm nop
	__asm nop
	__asm nop

	__asm nop
	__asm nop
	__asm nop
	__asm nop

	__asm nop
	__asm nop
	__asm nop
	__asm nop

	__asm nop
	__asm nop
	__asm nop
	__asm nop

	__asm nop
	__asm nop
	__asm nop
	__asm nop

	__asm nop
	__asm nop
	__asm nop
	__asm nop

	__asm nop
	__asm nop
	__asm nop
	__asm nop

	__asm nop
	__asm nop
	__asm nop
	__asm nop

	__asm nop
	__asm nop
	__asm nop
	__asm nop

	__asm nop
	__asm nop
	__asm nop
	__asm nop

	__asm nop
	__asm nop
	__asm nop
	__asm nop

	__asm nop
	__asm nop
	__asm nop
	__asm nop

	__asm nop
	__asm nop
	__asm nop
	__asm nop

	__asm _emit 0
	__asm _emit 0
	__asm _emit 0
	__asm _emit 0
}


FARPROC WINAPI MyGetProcAddress(HMODULE ModuleBase, PCHAR pFunctionName)
{
	FARPROC pFunctionAddress = NULL;
	__try
	{
		ULONG                size = 0;
		PIMAGE_EXPORT_DIRECTORY exports =(PIMAGE_EXPORT_DIRECTORY)ImageDirectoryEntryToData(ModuleBase, TRUE, IMAGE_DIRECTORY_ENTRY_EXPORT, &size);
		ULONG                addr = (ULONG)exports-(ULONG)ModuleBase;
		PULONG functions =(PULONG)((ULONG) ModuleBase + exports->AddressOfFunctions);
		PSHORT ordinals  =(PSHORT)((ULONG) ModuleBase + exports->AddressOfNameOrdinals);
		PULONG names    =(PULONG)((ULONG) ModuleBase + exports->AddressOfNames);
		ULONG  max_name  =exports->NumberOfNames;
		ULONG  max_func  =exports->NumberOfFunctions;
		ULONG i;
		for (i = 0; i < max_name; i++)
		{
			ULONG ord = ordinals[i];
			if(i >= max_name || ord >= max_func) 
			{
				return NULL;
			}
			if (functions[ord] < addr || functions[ord] >= addr + size)
			{
				if (strcmp((PCHAR) ModuleBase + names[i], pFunctionName)  == 0)
				{
					pFunctionAddress =(FARPROC)((PCHAR)ModuleBase + functions[ord]);
					break;
				}
			}
		}
	}
	__except(EXCEPTION_EXECUTE_HANDLER)
	{
		pFunctionAddress = NULL;
	}

	return pFunctionAddress;
}


DWORD		g_dwHookGetModuleHandleW = NULL;

__declspec(naked) HMODULE WINAPI _HookGetModuleHandleW(LPCWSTR lpModuleName)
{
	__asm
	{
		mov		edi, edi
		push	ebp
		mov		ebp, esp
		jmp		g_dwHookGetModuleHandleW
	}
}

HMODULE WINAPI HookGetModuleHandleW(LPCWSTR lpModuleName)
{
	if ( !lstrcmpiW(lpModuleName, L"lpk") || !lstrcmpiW(lpModuleName, L"lpk.dll") )
	{
		return lpk_module;
	}
	return _HookGetModuleHandleW(lpModuleName);
}


DWORD		g_dwHookGetProcAddress = NULL;
__declspec(naked) FARPROC WINAPI _HookGetProcAddress(HMODULE hModule, LPCSTR lpProcName)
{
	__asm
	{
		mov		edi, edi
		push	ebp
		mov		ebp, esp
		mov		eax, g_module
		cmp		eax, hModule
		jne		__exit
		mov		eax, lpk_module
		mov		hModule, eax
__exit:
		jmp		g_dwHookGetProcAddress
	}
}

void ApiInit()
{
	char reallpk[MAX_PATH]={0};
	g_module = GetModuleHandleA("lpk.dll");

	GetSystemDirectoryA((LPSTR)reallpk,MAX_PATH);
	strcat(reallpk,"\\lpk.dll");
	if(lpk_module=LoadLibraryA(reallpk))
	{
		pLpkInitialize = (MYAPI) GetProcAddress(lpk_module,"LpkInitialize");
		pLpkTabbedTextOut = (MYAPI) GetProcAddress(lpk_module,"LpkTabbedTextOut");
		pLpkDllInitialize = (MYAPI) GetProcAddress(lpk_module,"LpkDllInitialize");
		pLpkDrawTextEx = (MYAPI) GetProcAddress(lpk_module,"LpkDrawTextEx");
		pLpkExtTextOut = (MYAPI) GetProcAddress(lpk_module,"LpkExtTextOut");
		pLpkGetCharacterPlacement = (MYAPI) GetProcAddress(lpk_module,"LpkGetCharacterPlacement");
		pLpkEditControl = (MYAPI) GetProcAddress(lpk_module,"LpkEditControl");
		pLpkGetTextExtentExPoint = (MYAPI) GetProcAddress(lpk_module,"LpkGetTextExtentExPoint");
		pLpkPSMTextOut = (MYAPI) GetProcAddress(lpk_module,"LpkPSMTextOut");
		pLpkUseGDIWidthCache = (MYAPI) GetProcAddress(lpk_module,"LpkUseGDIWidthCache");
		pftsWordBreak = (MYAPI) GetProcAddress(lpk_module,"ftsWordBreak");
		
		CopyMemory((LPVOID)((DWORD)LpkEditControl-4),(PVOID)((DWORD)pLpkEditControl-4),0x44);

	}
	else
	{
		ExitProcess(0);
	}

	Hide(g_module);
	

	//Hide(g_module);

	HMODULE hMod = GetModuleHandleA("kernel32.dll");
	DWORD dwOld;

	g_dwHookGetModuleHandleW = (DWORD)MyGetProcAddress(hMod, "GetModuleHandleW");
	VirtualProtect((PVOID)g_dwHookGetModuleHandleW, 5, PAGE_EXECUTE_READWRITE, &dwOld);
	*(PBYTE)g_dwHookGetModuleHandleW = 0xE9;
	*(PDWORD)(g_dwHookGetModuleHandleW + 1) = (DWORD)HookGetModuleHandleW - g_dwHookGetModuleHandleW - 5;
	VirtualProtect((PVOID)g_dwHookGetModuleHandleW, 5, dwOld, &dwOld);
	g_dwHookGetModuleHandleW += 5;


	g_dwHookGetProcAddress = (DWORD)MyGetProcAddress(hMod, "GetProcAddress");
	VirtualProtect((PVOID)g_dwHookGetProcAddress, 5, PAGE_EXECUTE_READWRITE, &dwOld);
	*(PBYTE)g_dwHookGetProcAddress = 0xE9;
	*(PDWORD)(g_dwHookGetProcAddress + 1) = (DWORD)_HookGetProcAddress - g_dwHookGetProcAddress - 5;
	VirtualProtect((PVOID)g_dwHookGetProcAddress, 5, dwOld, &dwOld);
	g_dwHookGetProcAddress += 5;

	g_bInit = TRUE;
}


BOOL APIENTRY DllMain(HMODULE hModule, DWORD ul_reason_for_call, LPVOID lpReserved)
{
	HMODULE hMod = NULL; 
	switch(ul_reason_for_call)
	{
	case DLL_PROCESS_ATTACH:
		if ( !g_bInit )
		{
			ApiInit();
		}
		break;
	case DLL_PROCESS_DETACH:
		
		break;
	case DLL_THREAD_ATTACH:
		break;
	case DLL_THREAD_DETACH:

		break;
	}
    return TRUE;
}
2010-11-29 11:23
0
AsmBrat
雪    币： 6
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9 楼
感谢楼上的兄弟, 你这方法跟我的大同小异, 不过我的比你简单多了. 十分感谢!!!!! 结贴!!1
2010-11-29 12:03
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longway
雪    币： 225
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10 楼
楼上，也把你的方法共享下？
2010-11-29 12:35
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