靶机渗透练习50-KB-VULN2

靶机描述

靶机地址：https://www.vulnhub.com/entry/kb-vuln-2,562/

Description

Machine Level : Easy

A machine that measures your attention and require your research. This VM is running on VirtualBox. It includes 2 flags:user.txt and flag.txt

This works better with VirtualBox rather than VMware

一、搭建靶机环境

攻击机Kali：

IP地址：192.168.9.7

靶机：

IP地址：192.168.9.36

注：靶机与Kali的IP地址只需要在同一局域网即可（同一个网段,即两虚拟机处于同一网络模式）

该靶机环境搭建如下

将下载好的靶机环境，导入 VritualBox，设置为 Host-Only 模式

将 VMware 中桥接模式网卡设置为 VritualBox 的 Host-only

二、实战

2.1网络扫描

2.1.1 启动靶机和Kali后进行扫描

方法一、arp-scan -I eth0 -l （指定网卡扫）

arp-scan -I eth0 -l

方法二、masscan 扫描的网段 -p 扫描端口号

masscan 192.168.184.0/24 -p 80,22

方法三、netdiscover -i 网卡-r 网段

netdiscover -i eth0 -r 192.168.184.0/24

方法四、等你们补充

2.1.2 查看靶机开放的端口

使用nmap -A -sV -T4 -p- 靶机ip查看靶机开放的端口

☁  kali  nmap -A -sV -T4 -p- 192.168.9.36
Starting Nmap 7.92 ( https://nmap.org ) at 2022-02-22 18:18 CST
Nmap scan report for 192.168.9.36
Host is up (0.00049s latency).
Not shown: 65530 closed tcp ports (reset)
PORT    STATE SERVICE     VERSION
21/tcp  open  ftp         vsftpd 3.0.3
22/tcp  open  ssh         OpenSSH 7.6p1 Ubuntu 4ubuntu0.3 (Ubuntu Linux; protocol 2.0)
| ssh-hostkey: 
|   2048 5e:99:01:23:fe:c4:84:ef:14:55:87:da:a3:30:6f:50 (RSA)
|   256 cb:8e:e1:b3:3a:6e:64:9e:0f:53:39:7e:18:9d:8b:3f (ECDSA)
|_  256 ec:3b:d9:53:4a:5a:f7:32:f2:3a:f7:a7:6f:31:87:52 (ED25519)
80/tcp  open  http        Apache httpd 2.4.29 ((Ubuntu))
|_http-server-header: Apache/2.4.29 (Ubuntu)
|_http-title: Apache2 Ubuntu Default Page: It works
139/tcp open  netbios-ssn Samba smbd 3.X - 4.X (workgroup: WORKGROUP)
445/tcp open  netbios-ssn Samba smbd 4.7.6-Ubuntu (workgroup: WORKGROUP)
MAC Address: 08:00:27:C5:1B:F2 (Oracle VirtualBox virtual NIC)
Device type: general purpose
Running: Linux 4.X|5.X
OS CPE: cpe:/o:linux:linux_kernel:4 cpe:/o:linux:linux_kernel:5
OS details: Linux 4.15 - 5.6
Network Distance: 1 hop
Service Info: Host: UBUNTU; OSs: Unix, Linux; CPE: cpe:/o:linux:linux_kernel

Host script results:
|_clock-skew: mean: -1s, deviation: 0s, median: -1s
|_nbstat: NetBIOS name: UBUNTU, NetBIOS user: <unknown>, NetBIOS MAC: <unknown> (unknown)
| smb-security-mode: 
|   account_used: guest
|   authentication_level: user
|   challenge_response: supported
|_  message_signing: disabled (dangerous, but default)
| smb2-security-mode: 
|   3.1.1: 
|_    Message signing enabled but not required
| smb2-time: 
|   date: 2022-02-22T10:18:58
|_  start_date: N/A
| smb-os-discovery: 
|   OS: Windows 6.1 (Samba 4.7.6-Ubuntu)
|   Computer name: kb-server
|   NetBIOS computer name: UBUNTU\x00
|   Domain name: \x00
|   FQDN: kb-server
|_  System time: 2022-02-22T10:18:58+00:00

TRACEROUTE
HOP RTT     ADDRESS
1   0.50 ms 192.168.9.36

OS and Service detection performed. Please report any incorrect results at https://nmap.org/submit/ .
Nmap done: 1 IP address (1 host up) scanned in 17.79 seconds

21---ftp---vsftpd 3.0.3

22---ssh---OpenSSH 7.6p1 Ubuntu 4ubuntu0.3 (Ubuntu Linux; protocol 2.0)

80---http---Apache httpd 2.4.29 ((Ubuntu))

139---netbios-ssn Samba smbd 3.X - 4.X (workgroup: WORKGROUP)

445---netbios-ssn Samba smbd 4.7.6-Ubuntu (workgroup: WORKGROUP)

2.2枚举漏洞

2.2.1 21 端口分析

2.2.2 22 端口分析

一般只能暴力破解，暂时没有合适的字典

2.2.3 80 端口分析

访问 80 端口

恩，，，扫一下目录：dirsearch -u http://192.168.9.36

访问：http://192.168.9.36/wordpress/

在浏览器左下角发现，访问的同时解析到kb.vuln

说明存在域名，我们需要修改/etc/hosts 文件，添加以下记录
192.168.9.36 kb.vuln
访问：http://kb.vuln/wordpress/

正常访问了，咱们访问一下登录界面：http://kb.vuln/wordpress/wp-login.php

尝试使用wpscan扫描一下，无发现

2.2.4 139 端口 445 端口文件共享

使用工具遍历共享信息：enum4linux 192.168.9.36

可以发现一个共享文件夹且运行空账户和空密码可以登陆，获取账户 kbadmin

使用 smbclient 访问共享文件夹：smbclient //192.168.9.36/Anonymous --no-pass

可以发现一个备份文件，下载文件：get backup.zip

解压文件：unzip backup.zip，可以发现解压出了 wordpress 文件夹以及文件 remember_me.txt，查看文件发现账户密码

查看内容得到

Username:admin
Password:MachineBoy141

切换到 wordpress 目录，查看 wp-config.php 文件，可以找到账户和密码

define( 'DB_NAME', 'wordpress_db' );

/** MySQL database username */
define( 'DB_USER', 'kb_vuln' );

/** MySQL database password */
define( 'DB_PASSWORD', 'hellelujah' );

/** MySQL hostname */
define( 'DB_HOST', 'localhost' );

/** Database Charset to use in creating database tables. */
define( 'DB_CHARSET', 'utf8mb4' );

/** The Database Collate type. Don't change this if in doubt. */
define( 'DB_COLLATE', '' );

账户密码：kb_vuln/hellelujah
尝试登陆 wordpress，admin/MachineBoy141