Mirrors/CTF-Writeups
2
0
Fork 0
mirror of https://github.com/AbdullahRizwan101/CTF-Writeups synced 2024-11-24 21:03:07 +00:00
Code Issues Projects Releases Packages Wiki Activity

Create Resolute.md

Browse source
This commit is contained in:
ARZ 2021-12-23 20:21:10 +05:00 committed by GitHub
parent 9438e20551
commit 5c192d6ab6
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
1 changed files with 105 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

105
HackTheBox/Resolute.md Normal file
View file

@ -0,0 +1,105 @@
# HackTheBox - Resolute
## NMAP
```bash
PORT STATE SERVICE VERSION
53/tcp open domain Simple DNS Plus
88/tcp open kerberos-sec Microsoft Windows Kerberos (server time: 2021-12-15 09:37:43Z)
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: megabank.local, Site: Default-First-Site-Name)
445/tcp open microsoft-ds Windows Server 2016 Standard 14393 microsoft-ds (workgroup: MEGABANK)
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: megabank.local, 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
47001/tcp open http Microsoft HTTPAPI httpd 2.0 (SSDP/UPnP)
|_http-server-header: Microsoft-HTTPAPI/2.0
|_http-title: Not Found
49664/tcp open msrpc Microsoft Windows RPC
49665/tcp open msrpc Microsoft Windows RPC
49666/tcp open msrpc Microsoft Windows RPC
49667/tcp open msrpc Microsoft Windows RPC
49671/tcp open msrpc Microsoft Windows RPC
49676/tcp open ncacn_http Microsoft Windows RPC over HTTP 1.0
49677/tcp open msrpc Microsoft Windows RPC
49688/tcp open msrpc Microsoft Windows RPC
49862/tcp open unknown
Service Info: Host: RESOLUTE; OS: Windows; CPE: cpe:/o:microsoft:windows
```
From port 88 this tells us that this is an active directory because on this port `kerberos` runs which is responsible for authenticating users so knowing this will help us in our enumeration and what steps we should take
## SMB/LDAP
Since smb is enabled we can try to login as anonymous user if it's disabled
<img src="https://i.imgur.com/lrb6YVR.png"/>
now we can try to enumerate LDAP as from there we can get some information of what are user names , group names and domain name of the machine using either `enum4linux-ng` or `windapsearch`
<img src="https://i.imgur.com/p3pALUm.png"/>
<img src="https://i.imgur.com/Dc0LQVd.png"/>
We have the usernames just need to grep for `username` and then use these names against `kerbrute` to find which are valid domain users and we one of these users have pre-authentication disabled then we can get a user hash which we can crack
<img src="https://i.imgur.com/WdBCxC1.png"/>
We can sort this only to grab username by using `awk`
<img src="https://i.imgur.com/xsniwoV.png"/>
So running kerbrute we found 24 usernames that are valid out of 27
<img src="https://i.imgur.com/63jbK6C.png"/>
If we go back to enum4linux result we see in the description a password for `marko` user
<img src="https://i.imgur.com/qlh0Quy.png"/>
But this password didn't worked for him
<img src="https://i.imgur.com/sXPDe2U.png"/>
So next option is to just perform a passwordspray attack
<img src="https://i.imgur.com/2Pi1mOQ.png"/>
We can list shares on smb
<img src="https://i.imgur.com/YcoAURW.png"/>
The `NETLOGON` share seems to have nothing in it
<img src="https://i.imgur.com/Yba1SaF.png"/>
So I tried to see if I can kerberoast a user which is assoiciated with any SPNs but doesn't seem if there were any accounts like that
<img src="https://i.imgur.com/PKI7Usa.png"/>
Then I realized that I didn't check `winrm`
<img src="https://i.imgur.com/8NSjD3D.png"/>
And we can actually use it to get a remote session using `evil-winrm`
So to enumrate AD , we have two options either running `sharphound` powershell script or `python bloodhound injestor`
<img src="https://i.imgur.com/2pvClra.png"/>
## References
```
melanie:Welcome123!
```