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https://github.com/AbdullahRizwan101/CTF-Writeups
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170 lines
No EOL
6.9 KiB
Markdown
170 lines
No EOL
6.9 KiB
Markdown
# HackTheBox-Love
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## Rustscan
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```bash
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PORT STATE SERVICE REASON VERSION
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80/tcp open http syn-ack ttl 127 Apache httpd 2.4.46 ((Win64) OpenSSL/1.1.1j PHP/7.3.27)
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| http-cookie-flags:
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| /:
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| PHPSESSID:
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|_ httponly flag not set
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|_http-title: Voting System using PHP
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135/tcp open msrpc syn-ack ttl 127 Microsoft Windows RPC
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139/tcp open netbios-ssn syn-ack ttl 127 Microsoft Windows netbios-ssn
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443/tcp open ssl/http syn-ack ttl 127 Apache httpd 2.4.46 (OpenSSL/1.1.1j PHP/7.3.27)
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| ssl-cert: Subject: commonName=staging.love.htb/organizationName=ValentineCorp/stateOrProvinceName=m/countryName=in/organizationalUnitName=love.htb
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/localityName=norway/emailAddress=roy@love.htb
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| Issuer: commonName=staging.love.htb/organizationName=ValentineCorp/stateOrProvinceName=m/countryName=in/organizationalUnitName=love.htb/localityNa
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me=norway/emailAddress=roy@love.htb
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| Public Key type: rsa
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| Public Key bits: 2048
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| Signature Algorithm: sha256WithRSAEncryption
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| Not valid before: 2021-01-18T14:00:16
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| Not valid after: 2022-01-18T14:00:16
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| MD5: bff0 1add 5048 afc8 b3cf 7140 6e68 5ff6
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| SHA-1: 83ed 29c4 70f6 4036 a6f4 2d4d 4cf6 18a2 e9e4 96c2
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| -----BEGIN CERTIFICATE-----
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| MIIDozCCAosCFFhDHcnclWJmeuqOK/LQv3XDNEu4MA0GCSqGSIb3DQEBCwUAMIGN
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| MQswCQYDVQQGEwJpbjEKMAgGA1UECAwBbTEPMA0GA1UEBwwGbm9yd2F5MRYwFAYD
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| VQQKDA1WYWxlbnRpbmVDb3JwMREwDwYDVQQLDAhsb3ZlLmh0YjEZMBcGA1UEAwwQ
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| c3RhZ2luZy5sb3ZlLmh0YjEbMBkGCSqGSIb3DQEJARYMcm95QGxvdmUuaHRiMB4X
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445/tcp open microsoft-ds syn-ack ttl 127 Microsoft Windows 7 - 10 microsoft-ds (workgroup: WORKGROUP)
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3306/tcp open mysql? syn-ack ttl 127
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| fingerprint-strings:
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| LDAPBindReq, LPDString, NULL, giop:
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|_ Host '10.10.14.154' is not allowed to connect to this MariaDB server
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5000/tcp open http syn-ack ttl 127 Apache httpd 2.4.46 (OpenSSL/1.1.1j PHP/7.3.27)
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|_http-title: 403 Forbidden
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5040/tcp open unknown syn-ack ttl 127
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5985/tcp open http syn-ack ttl 127 Microsoft HTTPAPI httpd 2.0 (SSDP/UPnP)
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5986/tcp open ssl/http syn-ack ttl 127 Microsoft HTTPAPI httpd 2.0 (SSDP/UPnP)
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| ssl-cert: Subject: commonName=LOVE
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| Subject Alternative Name: DNS:LOVE, DNS:Love
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| Issuer: commonName=LOVE
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| Public Key type: rsa
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| Public Key bits: 4096
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| Signature Algorithm: sha256WithRSAEncryption
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| Not valid before: 2021-04-11T14:39:19
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| Not valid after: 2024-04-10T14:39:19
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| MD5: d35a 2ba6 8ef4 7568 f99d d6f4 aaa2 03b5
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| SHA-1: 84ef d922 a70a 6d9d 82b8 5bb3 d04f 066b 12f8 6e73
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47001/tcp open http syn-ack ttl 127 Microsoft HTTPAPI httpd 2.0 (SSDP/UPnP)
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|_http-title: Not Found
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49664/tcp open msrpc syn-ack ttl 127 Microsoft Windows RPC
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49665/tcp open msrpc syn-ack ttl 127 Microsoft Windows RPC
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49666/tcp open msrpc syn-ack ttl 127 Microsoft Windows RPC
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49667/tcp open msrpc syn-ack ttl 127 Microsoft Windows RPC
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49668/tcp open msrpc syn-ack ttl 127 Microsoft Windows RPC
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49669/tcp open msrpc syn-ack ttl 127 Microsoft Windows RPC
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49670/tcp open msrpc syn-ack ttl 127 Microsoft Windows RPC
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```
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We can see a domain name `love.htb` and `staging.love.htb` so let's add this to our `/etc/hosts` file
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<img src="https://imgur.com/nhIRIul.png"/>
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## PORT 80 (HTTP)
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<img src="https://imgur.com/Y6kHc95.png"/>
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On intercepting the request with `burp suite` we can see POST parameters
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<img src="https://imgur.com/JLpYvlG.png"/>
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I tried messing with parameters and got the error in sql
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<img src="https://imgur.com/SJM3xTz.png"/>
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Tried to do sqli but didn't work so let's visit staging.love.htb
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<img src="https://imgur.com/HR2YJx3.png"/>
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This seems to load a file using url so let's try to add our php shell
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`<?php system($_GET['cmd']); ?>`
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<img src="https://imgur.com/uJIjZd3.png"/>
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<img src="https://imgur.com/Al4rX8t.png"/>
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But this didn't work so there was port 5000 open on the machine which we cannot access
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<img src="https://imgur.com/bYoofQF.png"/>
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So let's try to access this port through that url input field
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<img src="https://imgur.com/rDko6kX.png"/>
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And we got voter admin's credentials but this won't work there as it needs an id
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<img src="https://imgur.com/eLSsZEQ.png"/>
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So I though maybe searching on google for voter system and found the exact same application
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https://www.sourcecodester.com/php/12306/voting-system-using-php.html
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<img src="https://imgur.com/S5zMMvh.png"/>
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<img src="https://imgur.com/2NeEM9G.png"/>
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So we need to navigate to `/admin` in order to login with credentials
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<img src="https://imgur.com/eCFsAI7.png"/>
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<img src="https://imgur.com/9sjjyfQ.png"/>
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Click on `Voters` from the dashboard
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<img src="https://imgur.com/rppZV6t.png"/>
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Add a new voter and for a profile picture add a php file either with GET paramter like I did above or powney shell
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<img src="https://imgur.com/JsNuFhE.png"/>
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<img src="https://imgur.com/tGdEDt6.png"/>
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<img src="https://imgur.com/GhnEscg.png"/>
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<img src="https://i.imgur.com/3bY34aY.png"/>
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And opening this php file we will get an interactive shell
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<img src="https://imgur.com/FBWksyb.png"/>
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Now generate a msfvenom payload because the file gets deleted because of some script of task running in the background
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<img src="https://imgur.com/Ek6iVms.png"/>
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<img src="https://imgur.com/GfUpuuu.png"/>
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<img src="https://imgur.com/birGV2H.png"/>
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<img src="https://imgur.com/56mK9Dn.png"/>
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<img src="https://imgur.com/XBLivlj.png"/>
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Now for privilege escalation we can run `PowerUp.ps1` script to enumerate for misconfigurations or potential vectors for privesc, import the powershell script and run `Invoke-Allchecks`
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<img src="https://imgur.com/Pxkc9zD.png"/>
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We can see that installation for any program will be installed as SYSTEM
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<img src="https://i.imgur.com/Iw3HUzK.png"/>
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I used this as a reference
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https://www.hackingarticles.in/windows-privilege-escalation-alwaysinstallelevated/
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Now there were tons of articles on how you can abuse so there were many ways you can either use the abuse function you saw by just running `Write-UserAddMSI` and on running ,it will create a msi program which you can install and it will create a local admin user
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Another way was to metasploit's post exploit module `use exploit/windows/local/always_install_elevated` but I did this exploit manually , I generate a windows 64 bit payload as the noramal one didn't respond
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<img src="https://imgur.com/5N0nyrb.png"/>
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This is will create windows installer file which can install it on the target machine using `msiexec`. So upload it to the target machine
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<img src="https://imgur.com/8auU2hb.png"/>
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<img src="https://i.imgur.com/yKLTIp1.png"/> |