hook api lib.zip Hook API Lib 0.5.rar Hook API Lib

文件名称: hook api lib.zip

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上传时间: 2013-10-04

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详细说明： Hook API Lib 0.5.rar Hook API Lib 0.51.rar /* ////////////////////////////////////////////////////////////////////////// HookApi 0.5 thanks to xIkUg ,sucsor by 海风月影[RCT] , eIcn#live.cn 2008.04.15 ////////////////////////////////////////////////////////////////////////// //更新内容 2008.04.15 0.5 1，重新写了Stub，换了一种模式，使hook更加自由，将hookbefore和hookafter合并 HookProc的定义方式与以前有所不同： HookProc的函数类型和原来的api一样，只是参数比原API多2个 DWORD WINAPI HookProc(DWORD RetAddr ,__pfnXXXX pfnXXXX, ...); //参数比原始的API多2个参数 RetAddr //调用api的返回地址 pfnXXX //类型为__pfnXXXX ，待hook的api的声明类型，用于调用未被hook的api 详见My_LoadLibraryA 原始的LoadLibraryA的声明是： HMODULE WINAPI LoadLibraryA( LPCSTR lpLibFileName ); 那么首先定义一下hook的WINAPI的类型 typedef HMODULE (WINAPI __pfnLoadLibraryA)(LPCTSTR lpFileName); 然后hookproc的函数声明如下： HMODULE WINAPI My_LoadLibraryA(DWORD RetAddr, __pfnLoadLibraryA pfnLoadLibraryA, LPCTSTR lpFileName ); 比原来的多了2个参数，参数位置不能颠倒，在My_LoadLibraryA中可以自由的调用未被hook的pfnLoadLibraryA 也可以调用系统的LoadLibraryA，不过要自己在hookproc中处理好重入问题另外，也可以在My_LoadLibraryA中使用UnInstallHookApi()函数来卸载hook，用法如下：将第二个参数__pfnLoadLibraryA pfnLoadLibraryA强制转换成PHOOKENVIRONMENT类型，使用UnInstallHookApi来卸载例如： UnInstallHookApi((PHOOKENVIRONMENT)pfnLoadLibraryA); 至于以前版本的HookBefore和HookAfter，完全可以在自己的HookProc里面灵活使用了 2，支持卸载hook InstallHookApi()调用后会返回一个PHOOKENVIRONMENT类型的指针需要卸载的时候可以使用UnInstallHookApi(PHOOKENVIRONMENT pHookEnv)来卸载在HookProc中也可以使用UnInstallHookApi来卸载，参数传入HookProc中的第二个参数 ★★注意： 1,如果在HookProc中自己不调用API(pfnXXXXX())，那么返回后，Stub是不会调用的，切记！ 2,当HookProc中使用UnInstallHookApi卸载完后就不能用第二个参数来调用API了(pfnXXXX())，切记！ 2008.04.15 0.41 1，前面的deroko的LdeX86 有BUG，678b803412 会算错换了一个LDX32，代码更少，更容易理解 2，修复了VirtualProtect的一个小BUG 0.4以前改动太大了，前面的就不写了 */ #include #include #include "HookApi.h" BYTE JMPGate[5] = { 0xE9, 0x00, 0x00, 0x00, 0x00 // JMP XXXXXXXX }; ////////////////////////////////////////////////////////////////////////// //另一个LDX32 #define C_ERROR 0xFFFFFFFF #define C_PREFIX 0x00000001 #define C_66 0x00000002 #define C_67 0x00000004 #define C_DATA66 0x00000008 #define C_DATA1 0x00000010 #define C_DATA2 0x00000020 #define C_DATA4 0x00000040 #define C_MEM67 0x00000080 #define C_MEM1 0x00000100 #define C_MEM2 0x00000200 #define C_MEM4 0x00000400 #define C_MODRM 0x00000800 #define C_DATAW0 0x00001000 #define C_FUCKINGTEST 0x00002000 #define C_TABLE_0F 0x00004000 DWORD table_1[256] = { /* 00 */ C_MODRM /* 01 */, C_MODRM /* 02 */, C_MODRM /* 03 */, C_MODRM /* 04 */, C_DATAW0 /* 05 */, C_DATAW0 /* 06 */, 0 /* 07 */, 0 /* 08 */, C_MODRM /* 09 */, C_MODRM /* 0A */, C_MODRM /* 0B */, C_MODRM /* 0C */, C_DATAW0 /* 0D */, C_DATAW0 /* 0E */, 0 /* 0F */, C_TABLE_0F /* 10 */, C_MODRM /* 11 */, C_MODRM /* 12 */, C_MODRM /* 13 */, C_MODRM /* 14 */, C_DATAW0 /* 15 */, C_DATAW0 /* 16 */, 0 /* 17 */, 0 /* 18 */, C_MODRM /* 19 */, C_MODRM /* 1A */, C_MODRM /* 1B */, C_MODRM /* 1C */, C_DATAW0 /* 1D */, C_DATAW0 /* 1E */, 0 /* 1F */, 0 /* 20 */, C_MODRM /* 21 */, C_MODRM /* 22 */, C_MODRM /* 23 */, C_MODRM /* 24 */, C_DATAW0 /* 25 */, C_DATAW0 /* 26 */, C_PREFIX /* 27 */, 0 /* 28 */, C_MODRM /* 29 */, C_MODRM /* 2A */, C_MODRM /* 2B */, C_MODRM /* 2C */, C_DATAW0 /* 2D */, C_DATAW0 /* 2E */, C_PREFIX /* 2F */, 0 /* 30 */, C_MODRM /* 31 */, C_MODRM /* 32 */, C_MODRM /* 33 */, C_MODRM /* 34 */, C_DATAW0 /* 35 */, C_DATAW0 /* 36 */, C_PREFIX /* 37 */, 0 /* 38 */, C_MODRM /* 39 */, C_MODRM /* 3A */, C_MODRM /* 3B */, C_MODRM /* 3C */, C_DATAW0 /* 3D */, C_DATAW0 /* 3E */, C_PREFIX /* 3F */, 0 /* 40 */, 0 /* 41 */, 0 /* 42 */, 0 /* 43 */, 0 /* 44 */, 0 /* 45 */, 0 /* 46 */, 0 /* 47 */, 0 /* 48 */, 0 /* 49 */, 0 /* 4A */, 0 /* 4B */, 0 /* 4C */, 0 /* 4D */, 0 /* 4E */, 0 /* 4F */, 0 /* 50 */, 0 /* 51 */, 0 /* 52 */, 0 /* 53 */, 0 /* 54 */, 0 /* 55 */, 0 /* 56 */, 0 /* 57 */, 0 /* 58 */, 0 /* 59 */, 0 /* 5A */, 0 /* 5B */, 0 /* 5C */, 0 /* 5D */, 0 /* 5E */, 0 /* 5F */, 0 /* 60 */, 0 /* 61 */, 0 /* 62 */, C_MODRM /* 63 */, C_MODRM /* 64 */, C_PREFIX /* 65 */, C_PREFIX /* 66 */, C_PREFIX+C_66 /* 67 */, C_PREFIX+C_67 /* 68 */, C_DATA66 /* 69 */, C_MODRM+C_DATA66 /* 6A */, C_DATA1 /* 6B */, C_MODRM+C_DATA1 /* 6C */, 0 /* 6D */, 0 /* 6E */, 0 /* 6F */, 0 /* 70 */, C_DATA1 /* 71 */, C_DATA1 /* 72 */, C_DATA1 /* 73 */, C_DATA1 /* 74 */, C_DATA1 /* 75 */, C_DATA1 /* 76 */, C_DATA1 /* 77 */, C_DATA1 /* 78 */, C_DATA1 /* 79 */, C_DATA1 /* 7A */, C_DATA1 /* 7B */, C_DATA1 /* 7C */, C_DATA1 /* 7D */, C_DATA1 /* 7E */, C_DATA1 /* 7F */, C_DATA1 /* 80 */, C_MODRM+C_DATA1 /* 81 */, C_MODRM+C_DATA66 /* 82 */, C_MODRM+C_DATA1 /* 83 */, C_MODRM+C_DATA1 /* 84 */, C_MODRM /* 85 */, C_MODRM /* 86 */, C_MODRM /* 87 */, C_MODRM /* 88 */, C_MODRM /* 89 */, C_MODRM /* 8A */, C_MODRM /* 8B */, C_MODRM /* 8C */, C_MODRM /* 8D */, C_MODRM /* 8E */, C_MODRM /* 8F */, C_MODRM /* 90 */, 0 /* 91 */, 0 /* 92 */, 0 /* 93 */, 0 /* 94 */, 0 /* 95 */, 0 /* 96 */, 0 /* 97 */, 0 /* 98 */, 0 /* 99 */, 0 /* 9A */, C_DATA66+C_MEM2 /* 9B */, 0 /* 9C */, 0 /* 9D */, 0 /* 9E */, 0 /* 9F */, 0 /* A0 */, C_MEM67 /* A1 */, C_MEM67 /* A2 */, C_MEM67 /* A3 */, C_MEM67 /* A4 */, 0 /* A5 */, 0 /* A6 */, 0 /* A7 */, 0 /* A8 */, C_DATA1 /* A9 */, C_DATA66 /* AA */, 0 /* AB */, 0 /* AC */, 0 /* AD */, 0 /* AE */, 0 /* AF */, 0 /* B0 */, C_DATA1 /* B1 */, C_DATA1 /* B2 */, C_DATA1 /* B3 */, C_DATA1 /* B4 */, C_DATA1 /* B5 */, C_DATA1 /* B6 */, C_DATA1 /* B7 */, C_DATA1 /* B8 */, C_DATA66 /* B9 */, C_DATA66 /* BA */, C_DATA66 /* BB */, C_DATA66 /* BC */, C_DATA66 /* BD */, C_DATA66 /* BE */, C_DATA66 /* BF */, C_DATA66 /* C0 */, C_MODRM+C_DATA1 /* C1 */, C_MODRM+C_DATA1 /* C2 */, C_DATA2 /* C3 */, 0 /* C4 */, C_MODRM /* C5 */, C_MODRM /* C6 */, C_MODRM+C_DATA66 /* C7 */, C_MODRM+C_DATA66 /* C8 */, C_DATA2+C_DATA1 /* C9 */, 0 /* CA */, C_DATA2 /* CB */, 0 /* CC */, 0 /* CD */, C_DATA1+C_DATA4 /* CE */, 0 /* CF */, 0 /* D0 */, C_MODRM /* D1 */, C_MODRM /* D2 */, C_MODRM /* D3 */, C_MODRM /* D4 */, 0 /* D5 */, 0 /* D6 */, 0 /* D7 */, 0 /* D8 */, C_MODRM /* D9 */, C_MODRM /* DA */, C_MODRM /* DB */, C_MODRM /* DC */, C_MODRM /* DD */, C_MODRM /* DE */, C_MODRM /* DF */, C_MODRM /* E0 */, C_DATA1 /* E1 */, C_DATA1 /* E2 */, C_DATA1 /* E3 */, C_DATA1 /* E4 */, C_DATA1 /* E5 */, C_DATA1 /* E6 */, C_DATA1 /* E7 */, C_DATA1 /* E8 */, C_DATA66 /* E9 */, C_DATA66 /* EA */, C_DATA66+C_MEM2 /* EB */, C_DATA1 /* EC */, 0 /* ED */, 0 /* EE */, 0 /* EF */, 0 /* F0 */, C_PREFIX /* F1 */, 0 // 0xF1 /* F2 */, C_PREFIX /* F3 */, C_PREFIX /* F4 */, 0 /* F5 */, 0 /* F6 */, C_FUCKINGTEST /* F7 */, C_FUCKINGTEST /* F8 */, 0 /* F9 */, 0 /* FA */, 0 /* FB */, 0 /* FC */, 0 /* FD */, 0 /* FE */, C_MODRM /* FF */, C_MODRM }; // table_1 DWORD table_0F[256] = { /* 00 */ C_MODRM /* 01 */, C_MODRM /* 02 */, C_MODRM /* 03 */, C_MODRM /* 04 */, -1 /* 05 */, -1 /* 06 */, 0 /* 07 */, -1 /* 08 */, 0 /* 09 */, 0 /* 0A */, 0 /* 0B */, 0 /* 0C */, -1 /* 0D */, -1 /* 0E */, -1 /* 0F */, -1 /* 10 */, -1 /* 11 */, -1 /* 12 */, -1 /* 13 */, -1 /* 14 */, -1 /* 15 */, -1 /* 16 */, -1 /* 17 */, -1 /* 18 */, -1 /* 19 */, -1 /* 1A */, -1 /* 1B */, -1 /* 1C */, -1 /* 1D */, -1 /* 1E */, -1 /* 1F */, -1 /* 20 */, -1 /* 21 */, -1 /* 22 */, -1 /* 23 */, -1 /* 24 */, -1 /* 25 */, -1 /* 26 */, -1 /* 27 */, -1 /* 28 */, -1 /* 29 */, -1 /* 2A */, -1 /* 2B */, -1 /* 2C */, -1 /* 2D */, -1 /* 2E */, -1 /* 2F */, -1 /* 30 */, -1 /* 31 */, -1 /* 32 */, -1 /* 33 */, -1 /* 34 */, -1 /* 35 */, -1 /* 36 */, -1 /* 37 */, -1 /* 38 */, -1 /* 39 */, -1 /* 3A */, -1 /* 3B */, -1 /* 3C */, -1 /* 3D */, -1 /* 3E */, -1 /* 3F */, -1 /* 40 */, -1 /* 41 */, -1 /* 42 */, -1 /* 43 */, -1 /* 44 */, -1 /* 45 */, -1 /* 46 */, -1 /* 47 */, -1 /* 48 */, -1 /* 49 */, -1 /* 4A */, -1 /* 4B */, -1 /* 4C */, -1 /* 4D */, -1 /* 4E */, -1 /* 4F */, -1 /* 50 */, -1 /* 51 */, -1 /* 52 */, -1 /* 53 */, -1 /* 54 */, -1 /* 55 */, -1 /* 56 */, -1 /* 57 */, -1 /* 58 */, -1 /* 59 */, -1 /* 5A */, -1 /* 5B */, -1 /* 5C */, -1 /* 5D */, -1 /* 5E */, -1 /* 5F */, -1 /* 60 */, -1 /* 61 */, -1 /* 62 */, -1 /* 63 */, -1 /* 64 */, -1 /* 65 */, -1 /* 66 */, -1 /* 67 */, -1 /* 68 */, -1 /* 69 */, -1 /* 6A */, -1 /* 6B */, -1 /* 6C */, -1 /* 6D */, -1 /* 6E */, -1 /* 6F */, -1 /* 70 */, -1 /* 71 */, -1 /* 72 */, -1 /* 73 */, -1 /* 74 */, -1 /* 75 */, -1 /* 76 */, -1 /* 77 */, -1 /* 78 */, -1 /* 79 */, -1 /* 7A */, -1 /* 7B */, -1 /* 7C */, -1 /* 7D */, -1 /* 7E */, -1 /* 7F */, -1 /* 80 */, C_DATA66 /* 81 */, C_DATA66 /* 82 */, C_DATA66 /* 83 */, C_DATA66 /* 84 */, C_DATA66 /* 85 */, C_DATA66 /* 86 */, C_DATA66 /* 87 */, C_DATA66 /* 88 */, C_DATA66 /* 89 */, C_DATA66 /* 8A */, C_DATA66 /* 8B */, C_DATA66 /* 8C */, C_DATA66 /* 8D */, C_DATA66 /* 8E */, C_DATA66 /* 8F */, C_DATA66 /* 90 */, C_MODRM /* 91 */, C_MODRM /* 92 */, C_MODRM /* 93 */, C_MODRM /* 94 */, C_MODRM /* 95 */, C_MODRM /* 96 */, C_MODRM /* 97 */, C_MODRM /* 98 */, C_MODRM /* 99 */, C_MODRM /* 9A */, C_MODRM /* 9B */, C_MODRM /* 9C */, C_MODRM /* 9D */, C_MODRM /* 9E */, C_MODRM /* 9F */, C_MODRM /* A0 */, 0 /* A1 */, 0 /* A2 */, 0 /* A3 */, C_MODRM /* A4 */, C_MODRM+C_DATA1 /* A5 */, C_MODRM /* A6 */, -1 /* A7 */, -1 /* A8 */, 0 /* A9 */, 0 /* AA */, 0 /* AB */, C_MODRM /* AC */, C_MODRM+C_DATA1 /* AD */, C_MODRM /* AE */, -1 /* AF */, C_MODRM /* B0 */, C_MODRM /* B1 */, C_MODRM /* B2 */, C_MODRM /* B3 */, C_MODRM /* B4 */, C_MODRM /* B5 */, C_MODRM /* B6 */, C_MODRM /* B7 */, C_MODRM /* B8 */, -1 /* B9 */, -1 /* BA */, C_MODRM+C_DATA1 /* BB */, C_MODRM /* BC */, C_MODRM /* BD */, C_MODRM /* BE */, C_MODRM /* BF */, C_MODRM /* C0 */, C_MODRM /* C1 */, C_MODRM /* C2 */, -1 /* C3 */, -1 /* C4 */, -1 /* C5 */, -1 /* C6 */, -1 /* C7 */, -1 /* C8 */, 0 /* C9 */, 0 /* CA */, 0 /* CB */, 0 /* CC */, 0 /* CD */, 0 /* CE */, 0 /* CF */, 0 /* D0 */, -1 /* D1 */, -1 /* D2 */, -1 /* D3 */, -1 /* D4 */, -1 /* D5 */, -1 /* D6 */, -1 /* D7 */, -1 /* D8 */, -1 /* D9 */, -1 /* DA */, -1 /* DB */, -1 /* DC */, -1 /* DD */, -1 /* DE */, -1 /* DF */, -1 /* E0 */, -1 /* E1 */, -1 /* E2 */, -1 /* E3 */, -1 /* E4 */, -1 /* E5 */, -1 /* E6 */, -1 /* E7 */, -1 /* E8 */, -1 /* E9 */, -1 /* EA */, -1 /* EB */, -1 /* EC */, -1 /* ED */, -1 /* EE */, -1 /* EF */, -1 /* F0 */, -1 /* F1 */, -1 /* F2 */, -1 /* F3 */, -1 /* F4 */, -1 /* F5 */, -1 /* F6 */, -1 /* F7 */, -1 /* F8 */, -1 /* F9 */, -1 /* FA */, -1 /* FB */, -1 /* FC */, -1 /* FD */, -1 /* FE */, -1 /* FF */, -1 }; // table_0F #pragma comment(linker, "/SECTION:HookStub,RW") #define NAKED __declspec(naked) #define ALLOCATE(x1) __declspec(allocate(#x1)) #define ALLOCATE_HookStub ALLOCATE(HookStub) #define ReloCationForADDR(x1,delta) ((DWORD(&x1) + delta)) #define ReloCationForDWORD(x1,delta) (*(LPDWORD(DWORD(&x1) + delta))) #define ReloCataonForTCHAR(x1,delta) (LPCTSTR(DWORD(&x1) + delta)) #define ReloCationForLP(x1,delta) (__##x1(ReloCationForDWORD(x1,delta))) #pragma code_seg("HookStub") #pragma optimize("",off) ALLOCATE_HookStub HOOKENVIRONMENT pEnv={0}; NAKED DWORD GetDelta() { __asm { call next next: pop eax sub eax,offset next ret } } NAKED void NewStub() { __asm { jmp next back: _emit 0xE9 NOP NOP NOP NOP next: push [esp] push [esp] push eax //保存一下Stub中唯一使用到的EAX call GetDelta lea eax,[eax+pEnv] mov dword ptr [esp+0xC],eax pop eax //恢复EAX jmp back } } NAKED DWORD GetEndAddr() { __asm { call next next: pop eax sub eax,5 ret } } #pragma optimize("",off) #pragma code_seg() DWORD __stdcall GetOpCodeSize(BYTE* iptr0) { BYTE* iptr = iptr0; DWORD f = 0; prefix: BYTE b = *iptr++; f |= table_1[b]; if (f&C_FUCKINGTEST) if (((*iptr)&0x38)==0x00) // ttt f=C_MODRM+C_DATAW0; // TEST else f=C_MODRM; // NOT,NEG,MUL,IMUL,DIV,IDIV if (f&C_TABLE_0F) { b = *iptr++; f = table_0F[b]; } if (f==C_ERROR) { //printf("error in X\n",b); return C_ERROR; } if (f&C_PREFIX) { f&=~C_PREFIX; goto prefix; } if (f&C_DATAW0) if (b&0x01) f|=C_DATA66; else f|=C_DATA1; if (f&C_MODRM) { b = *iptr++; BYTE mod = b & 0xC0; BYTE rm = b & 0x07; if (mod!=0xC0) { if (f&C_67) // modrm16 { if ((mod==0x00)&&(rm==0x06)) f|=C_MEM2; if (mod==0x40) f|=C_MEM1; if (mod==0x80) f|=C_MEM2; } else // modrm32 { if (mod==0x40) f|=C_MEM1; if (mod==0x80) f|=C_MEM4; if (rm==0x04) rm = (*iptr++) & 0x07; // rm<-sib.base if ((rm==0x05)&&(mod==0x00)) f|=C_MEM4; } } } // C_MODRM if (f&C_MEM67) if (f&C_67) f|=C_MEM2; else f|=C_MEM4; if (f&C_DATA66) if (f&C_66) f|=C_DATA2; else f|=C_DATA4; if (f&C_MEM1) iptr++; if (f&C_MEM2) iptr+=2; if (f&C_MEM4) iptr+=4; if (f&C_DATA1) iptr++; if (f&C_DATA2) iptr+=2; if (f&C_DATA4) iptr+=4; return iptr - iptr0; } PHOOKENVIRONMENT __stdcall InstallHookApi(PCHAR DllName,PCHAR ApiName,PVOID HookProc) { HMODULE DllHandle; PVOID ApiEntry; int ReplaceCodeSize; DWORD oldpro; DWORD SizeOfStub; DWORD delta; DWORD RetSize =0; PHOOKENVIRONMENT pHookEnv; if (HookProc == NULL) { return NULL; } DllHandle = GetModuleHandle(DllName); if (DllHandle == NULL) DllHandle = LoadLibrary(DllName); if (DllHandle == NULL) return NULL; ApiEntry = GetProcAddress(DllHandle,ApiName); if (ApiEntry == NULL) return NULL; ReplaceCodeSize = GetOpCodeSize((BYTE*)ApiEntry); while (ReplaceCodeSize < 5) ReplaceCodeSize += GetOpCodeSize((BYTE*)((DWORD)ApiEntry + (DWORD)ReplaceCodeSize)); if (ReplaceCodeSize > 16) return NULL; SizeOfStub = GetEndAddr()-(DWORD)&pEnv; pHookEnv = (PHOOKENVIRONMENT)VirtualAlloc(NULL,SizeOfStub,MEM_COMMIT,PAGE_READWRITE); memset((void*)&pEnv,0x90,sizeof(pEnv)); CopyMemory(pHookEnv,(PVOID)&pEnv,SizeOfStub); CopyMemory((void*)pHookEnv,(void*)&pEnv,sizeof(pEnv.savebytes)); CopyMemory(pHookEnv->savebytes,ApiEntry,ReplaceCodeSize); pHookEnv->OrgApiAddr = ApiEntry; pHookEnv->SizeOfReplaceCode = ReplaceCodeSize; pHookEnv->jmptoapi[0]=0xE9; *(DWORD*)(&pHookEnv->jmptoapi[1]) = (DWORD)ApiEntry + ReplaceCodeSize - ((DWORD)pHookEnv->jmptoapi + 5); //patch api if (!VirtualProtect(ApiEntry,ReplaceCodeSize,PAGE_EXECUTE_READWRITE,&oldpro)) return FALSE; delta = (DWORD)pHookEnv - (DWORD)&pEnv; *(DWORD*)(&JMPGate[1]) = ((DWORD)NewStub + delta) - ((DWORD)ApiEntry + 5); WriteProcessMemory(GetCurrentProcess(), ApiEntry, JMPGate, sizeof(JMPGate),&RetSize); if (!VirtualProtect(ApiEntry,ReplaceCodeSize,oldpro,&oldpro)) return FALSE; //写入变量 *(DWORD*)((DWORD)NewStub + delta + 3) = (DWORD)HookProc - ((DWORD)NewStub + delta + 3 + 4); return pHookEnv; } BOOL __stdcall UnInstallHookApi(PHOOKENVIRONMENT pHookEnv) { DWORD oldpro; DWORD RetSize; //如果内存不存在了，则退出 if(IsBadReadPtr((const void*)pHookEnv,sizeof(HOOKENVIRONMENT))) return FALSE; if(!VirtualProtect(pHookEnv->OrgApiAddr,pHookEnv->SizeOfReplaceCode,PAGE_EXECUTE_READWRITE,&oldpro)) return FALSE; WriteProcessMemory(GetCurrentProcess(),pHookEnv->OrgApiAddr,pHookEnv->savebytes,pHookEnv->SizeOfReplaceCode,&RetSize); if(!VirtualProtect(pHookEnv->OrgApiAddr,pHookEnv->SizeOfReplaceCode,oldpro,&oldpro)) return FALSE; VirtualFree((LPVOID)pHookEnv,0,MEM_RELEASE); return TRUE; } //定义下面这行可以作为演示使用 //#define TEST_MAIN #ifdef TEST_MAIN BOOL IsMe = FALSE; //先定义一下要hook的WINAPI typedef HMODULE (WINAPI __pfnLoadLibraryA)(LPCTSTR lpFileName); HMODULE WINAPI My_LoadLibraryA(DWORD RetAddr, __pfnLoadLibraryA pfnLoadLibraryA, LPCTSTR lpFileName ) { HMODULE hLib; //需要自己处理重入和线程安全问题 if (!IsMe) { IsMe = TRUE; MessageBoxA(NULL,lpFileName,"test",MB_ICONINFORMATION); hLib = LoadLibrary(lpFileName);//这里调用的是系统的，已经被hook过的 IsMe = FALSE; //这里是卸载Hook，这里卸载完就不能用pfnLoadLibraryA来调用了 UnInstallHookApi((PHOOKENVIRONMENT)pfnLoadLibraryA); return hLib; } return pfnLoadLibraryA(lpFileName);//这里调用非hook的 } int main() { DWORD RetSize =0; DWORD dwThreadId; HANDLE hThread; PHOOKENVIRONMENT pHookEnv; pHookEnv = InstallHookApi("Kernel32.dll", "LoadLibraryA", My_LoadLibraryA); LoadLibrary("InjectDll.dll"); MessageBoxA(NULL,"Safe Here!!!","Very Good!!",MB_ICONINFORMATION); UnInstallHookApi(pHookEnv);//由于HookProc中卸载过了，所以这里的卸载就无效了 MessageBoxA(NULL,"UnInstall Success!!!","Good!!",MB_ICONINFORMATION); return 0; } #endif ...展开收缩

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