Hero Image
[HTB] Machine: Tentacle

Tentacle

Enumeration

  • nmap
└─$ nmap -Pn -p- 10.10.10.224 -T4 --min-rate 5000
Starting Nmap 7.94 ( https://nmap.org ) at 2023-09-26 20:09 BST
Nmap scan report for 10.10.10.224 (10.10.10.224)
Host is up (0.093s latency).
Not shown: 65495 filtered tcp ports (no-response), 36 filtered tcp ports (host-unreach)
PORT     STATE SERVICE
22/tcp   open  ssh
53/tcp   open  domain
88/tcp   open  kerberos-sec
3128/tcp open  squid-http

Nmap done: 1 IP address (1 host up) scanned in 39.58 seconds

└─$ nmap -Pn -p22,53,88,3128 -sC -sV 10.10.10.224 -T4 --min-rate 5000
Starting Nmap 7.94 ( https://nmap.org ) at 2023-09-26 20:12 BST
Nmap scan report for 10.10.10.224 (10.10.10.224)
Host is up (0.12s latency).

PORT     STATE SERVICE      VERSION
22/tcp   open  ssh          OpenSSH 8.0 (protocol 2.0)
| ssh-hostkey: 
|   3072 8d:dd:18:10:e5:7b:b0:da:a3:fa:14:37:a7:52:7a:9c (RSA)
|   256 f6:a9:2e:57:f8:18:b6:f4:ee:03:41:27:1e:1f:93:99 (ECDSA)
|_  256 04:74:dd:68:79:f4:22:78:d8:ce:dd:8b:3e:8c:76:3b (ED25519)
53/tcp   open  domain       ISC BIND 9.11.20 (RedHat Enterprise Linux 8)
| dns-nsid: 
|_  bind.version: 9.11.20-RedHat-9.11.20-5.el8
88/tcp   open  kerberos-sec MIT Kerberos (server time: 2023-09-26 19:11:56Z)
3128/tcp open  http-proxy   Squid http proxy 4.11
|_http-server-header: squid/4.11
|_http-title: ERROR: The requested URL could not be retrieved
Service Info: Host: REALCORP.HTB; OS: Linux; CPE: cpe:/o:redhat:enterprise_linux:8

Service detection performed. Please report any incorrect results at https://nmap.org/submit/ .
Nmap done: 1 IP address (1 host up) scanned in 23.44 seconds

└─$ sudo nmap -Pn -sU 10.10.10.224 -T4 --min-rate 5000
[sudo] password for kali: 
Starting Nmap 7.94 ( https://nmap.org ) at 2023-09-26 20:13 BST
Nmap scan report for 10.10.10.224 (10.10.10.224)
Host is up (0.10s latency).
Not shown: 991 open|filtered udp ports (no-response)
PORT      STATE    SERVICE
53/udp    open     domain
88/udp    open     kerberos-sec
123/udp   open     ntp
17787/udp filtered unknown
20560/udp filtered unknown
21016/udp filtered unknown
40019/udp filtered unknown
44185/udp filtered unknown
49179/udp filtered unknown
  • dns
└─$ dig axfr @10.10.10.224
;; communications error to 10.10.10.224#53: timed out
;; communications error to 10.10.10.224#53: timed out

; <<>> DiG 9.18.16-1-Debian <<>> axfr @10.10.10.224
; (1 server found)
;; global options: +cmd
;; Query time: 175 msec
;; SERVER: 10.10.10.224#53(10.10.10.224) (UDP)
;; WHEN: Wed Sep 27 17:09:26 BST 2023
;; MSG SIZE  rcvd: 56

└─$ dig realcorp.htb @10.10.10.224

; <<>> DiG 9.18.16-1-Debian <<>> realcorp.htb @10.10.10.224
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 20726
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
; COOKIE: 1d3b122485d1c4e6706e605e651453ed994c22dca6111a8b (good)
;; QUESTION SECTION:
;realcorp.htb.                  IN      A

;; AUTHORITY SECTION:
realcorp.htb.           86400   IN      SOA     realcorp.htb. root.realcorp.htb. 199609206 28800 7200 2419200 86400

;; Query time: 91 msec
;; SERVER: 10.10.10.224#53(10.10.10.224) (UDP)
;; WHEN: Wed Sep 27 17:11:02 BST 2023
;; MSG SIZE  rcvd: 110

└─$ dig axfr realcorp.htb @10.10.10.224

; <<>> DiG 9.18.16-1-Debian <<>> axfr realcorp.htb @10.10.10.224
;; global options: +cmd
; Transfer failed.
  • dnsenum
└─$ dnsenum --dnsserver 10.10.10.224 -f /usr/share/seclists/Discovery/DNS/bitquark-subdomains-top100000.txt realcorp.htb
dnsenum VERSION:1.2.6

-----   realcorp.htb   -----                                                                                                                                                                                                                

Host's addresses:                                                                                                                                                                                                                           
__________________                                                                                                                                                                                                                          
Name Servers:                                                                                                                                                                                                                               
______________                                                                                                                                                                                                                              

ns.realcorp.htb.                         259200   IN    A        10.197.243.77

Mail (MX) Servers:                                                                                                                                                                                                                          
___________________                                                                                                                                                                                                                           
Trying Zone Transfers and getting Bind Versions:                                                                                                                                                                                            
_________________________________________________                                                                                                                                                                                           

unresolvable name: ns.realcorp.htb at /usr/bin/dnsenum line 900.                                                                                                                                                                            
        
Trying Zone Transfer for realcorp.htb on ns.realcorp.htb ... 
AXFR record query failed: no nameservers
    
Brute forcing with /usr/share/seclists/Discovery/DNS/bitquark-subdomains-top100000.txt:                                                                                                                                                     
________________________________________________________________________________________                                                                                                                                         
ns.realcorp.htb.                         259200   IN    A        10.197.243.77
proxy.realcorp.htb.                      259200   IN    CNAME    ns.realcorp.htb.
ns.realcorp.htb.                         259200   IN    A        10.197.243.77
wpad.realcorp.htb.                       259200   IN    A        10.197.243.31
  • kerbrute
└─$ ./kerbrute userenum -d realcorp.htb --dc realcorp.htb /usr/share/seclists/Usernames/cirt-default-usernames.txt 

    __             __               __     
   / /_____  _____/ /_  _______  __/ /____ 
  / //_/ _ \/ ___/ __ \/ ___/ / / / __/ _ \
 / ,< /  __/ /  / /_/ / /  / /_/ / /_/  __/
/_/|_|\___/_/  /_.___/_/   \__,_/\__/\___/                                        

Version: v1.0.3 (9dad6e1) - 09/27/23 - Ronnie Flathers @ropnop

2023/09/27 17:24:12 >  Using KDC(s):
2023/09/27 17:24:12 >   realcorp.htb:88

2023/09/27 17:24:27 >  Done! Tested 828 usernames (0 valid) in 15.460 seconds
  • ntp
└─$ sudo nmap -Pn --script "ntp*" -sU -sV -p123 realcorp.htb
[sudo] password for kali: 
Starting Nmap 7.94 ( https://nmap.org ) at 2023-09-27 17:27 BST
Nmap scan report for realcorp.htb (10.10.10.224)
Host is up (0.13s latency).

PORT    STATE SERVICE VERSION
123/udp open  ntp     NTP v4 (secondary server)
| ntp-info: 
|_  receive time stamp: 2023-09-27T16:26:39

Service detection performed. Please report any incorrect results at https://nmap.org/submit/ .
Nmap done: 1 IP address (1 host up) scanned in 10.67 seconds

└─$ date; ntpdate -q 10.10.10.224
Wed Sep 27 05:30:03 PM BST 2023
2023-09-27 17:29:22.601161 (+0100) -40.729112 +/- 0.083173 10.10.10.224 s10 no-leap
  • squid version 4.11
    • srv01.realcorp.htb
    • user: j.nakazawa@realcorp.htb

Wednesday, September 27, 2023 | 14 minutes Read
Hero Image
[HTB] Machine: Cronos

Cronos

Enumeration

  • nmap
└─$ nmap -Pn -p- 10.10.10.13 -T4                            
Starting Nmap 7.94 ( https://nmap.org ) at 2023-09-01 14:23 BST
Stats: 0:00:02 elapsed; 0 hosts completed (0 up), 0 undergoing Host Discovery
Parallel DNS resolution of 1 host. Timing: About 0.00% done
Warning: 10.10.10.13 giving up on port because retransmission cap hit (6).
Nmap scan report for 10.10.10.13 (10.10.10.13)
Host is up (0.15s latency).
Not shown: 65520 closed tcp ports (conn-refused)
PORT      STATE    SERVICE
22/tcp    open     ssh
53/tcp    open     domain
80/tcp    open     http

└─$ nmap -Pn -p22,53,80 -sC -sV 10.10.10.13 -T4
Starting Nmap 7.94 ( https://nmap.org ) at 2023-09-01 15:04 BST
Nmap scan report for 10.10.10.13 (10.10.10.13)
Host is up (0.12s latency).

PORT   STATE SERVICE VERSION
22/tcp open  ssh     OpenSSH 7.2p2 Ubuntu 4ubuntu2.1 (Ubuntu Linux; protocol 2.0)
| ssh-hostkey: 
|   2048 18:b9:73:82:6f:26:c7:78:8f:1b:39:88:d8:02:ce:e8 (RSA)
|   256 1a:e6:06:a6:05:0b:bb:41:92:b0:28:bf:7f:e5:96:3b (ECDSA)
|_  256 1a:0e:e7:ba:00:cc:02:01:04:cd:a3:a9:3f:5e:22:20 (ED25519)
53/tcp open  domain  ISC BIND 9.10.3-P4 (Ubuntu Linux)
| dns-nsid: 
|_  bind.version: 9.10.3-P4-Ubuntu
80/tcp open  http    Apache httpd 2.4.18 ((Ubuntu))
|_http-title: Apache2 Ubuntu Default Page: It works
|_http-server-header: Apache/2.4.18 (Ubuntu)
Service Info: OS: Linux; CPE: cpe:/o:linux:linux_kernel
  • Web server

Friday, September 1, 2023 | 3 minutes Read
Hero Image
[HTB] Machine: Forest

Forest

Enumeration

  • nmap
└─$ nmap -sC -sV -Pn 10.10.10.161 -T4
Starting Nmap 7.93 ( https://nmap.org ) at 2023-06-26 16:32 BST
Nmap scan report for 10.10.10.161 (10.10.10.161)
Host is up (0.15s latency).
Not shown: 989 closed tcp ports (conn-refused)
PORT     STATE SERVICE      VERSION
53/tcp   open  domain       Simple DNS Plus
88/tcp   open  kerberos-sec Microsoft Windows Kerberos (server time: 2023-06-26 15:39:16Z)
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: htb.local, Site: Default-First-Site-Name)
445/tcp  open  microsoft-ds Windows Server 2016 Standard 14393 microsoft-ds (workgroup: HTB)
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: htb.local, Site: Default-First-Site-Name)
3269/tcp open  tcpwrapped
Service Info: Host: FOREST; OS: Windows; CPE: cpe:/o:microsoft:windows

Host script results:
|_clock-skew: mean: 2h26m18s, deviation: 4h02m30s, median: 6m17s
| smb-security-mode: 
|   account_used: <blank>
|   authentication_level: user
|   challenge_response: supported
|_  message_signing: required
| smb2-security-mode: 
|   311: 
|_    Message signing enabled and required
| smb2-time: 
|   date: 2023-06-26T15:39:27
|_  start_date: 2023-06-26T14:24:16
| smb-os-discovery: 
|   OS: Windows Server 2016 Standard 14393 (Windows Server 2016 Standard 6.3)
|   Computer name: 
FOREST
|   NetBIOS computer name: FOREST\x00
|   Domain name: htb.local
|   Forest name: htb.local
|   FQDN: FOREST.htb.local
|_  System time: 2023-06-26T08:39:24-07:00

Service detection performed. Please report any incorrect results at https://nmap.org/submit/ .
Nmap done: 1 IP address (1 host up) scanned in 42.94 seconds
  • Dns
    • No results with zone transfer

Saturday, June 24, 2023 | 3 minutes Read
Hero Image
[HTB] Machine: FriendZone

FriendZone

Enumeration

  • nmap
└─$ nmap -Pn -sC -sV 10.10.10.123 -T4
Starting Nmap 7.93 ( https://nmap.org ) at 2023-06-18 15:55 BST
Nmap scan report for 10.10.10.123 (10.10.10.123)
Host is up (0.13s latency).
Not shown: 993 closed tcp ports (conn-refused)
PORT    STATE SERVICE     VERSION
21/tcp  open  ftp         vsftpd 3.0.3
22/tcp  open  ssh         OpenSSH 7.6p1 Ubuntu 4 (Ubuntu Linux; protocol 2.0)
| ssh-hostkey: 
|   2048 a96824bc971f1e54a58045e74cd9aaa0 (RSA)
|   256 e5440146ee7abb7ce91acb14999e2b8e (ECDSA)
|_  256 004e1a4f33e8a0de86a6e42a5f84612b (ED25519)
53/tcp  open  domain      ISC BIND 9.11.3-1ubuntu1.2 (Ubuntu Linux)
| dns-nsid: 
|_  bind.version: 9.11.3-1ubuntu1.2-Ubuntu
80/tcp  open  http        Apache httpd 2.4.29 ((Ubuntu))
|_http-server-header: Apache/2.4.29 (Ubuntu)
|_http-title: Friend Zone Escape software
139/tcp open  netbios-ssn Samba smbd 3.X - 4.X (workgroup: WORKGROUP)
443/tcp open  ssl/http    Apache httpd 2.4.29
| tls-alpn: 
|_  http/1.1
| ssl-cert: Subject: commonName=friendzone.red/organizationName=CODERED/stateOrProvinceName=CODERED/countryName=JO
| Not valid before: 2018-10-05T21:02:30
|_Not valid after:  2018-11-04T21:02:30
|_http-server-header: Apache/2.4.29 (Ubuntu)
|_ssl-date: TLS randomness does not represent time
|_http-title: 404 Not Found
445/tcp open  netbios-ssn Samba smbd 4.7.6-Ubuntu (workgroup: WORKGROUP)
Service Info: Hosts: FRIENDZONE, 127.0.1.1; OSs: Unix, Linux; CPE: cpe:/o:linux:linux_kernel

Host script results:
|_clock-skew: mean: -1h00m29s, deviation: 1h43m54s, median: -30s
| smb2-time: 
|   date: 2023-06-18T14:55:52
|_  start_date: N/A
| smb-security-mode: 
|   account_used: guest
|   authentication_level: user
|   challenge_response: supported
|_  message_signing: disabled (dangerous, but default)
|_nbstat: NetBIOS name: FRIENDZONE, NetBIOS user: <unknown>, NetBIOS MAC: 000000000000 (Xerox)
| smb-os-discovery: 
|   OS: Windows 6.1 (Samba 4.7.6-Ubuntu)
|   Computer name: friendzone
|   NetBIOS computer name: FRIENDZONE\x00
|   Domain name: \x00
|   FQDN: friendzone
|_  System time: 2023-06-18T17:55:53+03:00
| smb2-security-mode: 
|   311: 
|_    Message signing enabled but not required

Service detection performed. Please report any incorrect results at https://nmap.org/submit/ .
Nmap done: 1 IP address (1 host up) scanned in 40.94 seconds
  • smbmap
└─$ smbmap -H 10.10.10.123  -R
[+] Guest session       IP: 10.10.10.123:445    Name: 10.10.10.123                                      
        Disk                                                    Permissions     Comment
        ----                                                    -----------     -------
        print$                                                  NO ACCESS       Printer Drivers
        Files                                                   NO ACCESS       FriendZone Samba Server Files /etc/Files
        general                                                 READ ONLY       FriendZone Samba Server Files
        .\general\*
        dr--r--r--                0 Wed Jan 16 20:10:51 2019    .
        dr--r--r--                0 Tue Sep 13 15:56:24 2022    ..
        fr--r--r--               57 Wed Oct 10 00:52:42 2018    creds.txt
        Development                                             READ, WRITE     FriendZone Samba Server Files
        .\Development\*
        dr--r--r--                0 Sun Jun 18 16:10:05 2023    .
        dr--r--r--                0 Tue Sep 13 15:56:24 2022    ..
        IPC$                                                    NO ACCESS       IPC Service (FriendZone server (Samba, Ubuntu))
  • Creds

Friday, June 16, 2023 | 3 minutes Read
Hero Image
[HTB] Machine: Bank

Bank

Enumeration

  • nmap
┌──(kali㉿kali)-[~]
└─$ nmap -sC -sV 10.10.10.29  
Starting Nmap 7.93 ( https://nmap.org ) at 2023-06-06 16:18 BST
Nmap scan report for 10.10.10.29 (10.10.10.29)
Host is up (0.12s latency).
Not shown: 997 closed tcp ports (conn-refused)
PORT   STATE SERVICE VERSION
22/tcp open  ssh     OpenSSH 6.6.1p1 Ubuntu 2ubuntu2.8 (Ubuntu Linux; protocol 2.0)
| ssh-hostkey: 
|   1024 08eed030d545e459db4d54a8dc5cef15 (DSA)
|   2048 b8e015482d0df0f17333b78164084a91 (RSA)
|   256 a04c94d17b6ea8fd07fe11eb88d51665 (ECDSA)
|_  256 2d794430c8bb5e8f07cf5b72efa16d67 (ED25519)
53/tcp open  domain  ISC BIND 9.9.5-3ubuntu0.14 (Ubuntu Linux)
| dns-nsid: 
|_  bind.version: 9.9.5-3ubuntu0.14-Ubuntu
80/tcp open  http    Apache httpd 2.4.7 ((Ubuntu))
|_http-server-header: Apache/2.4.7 (Ubuntu)
|_http-title: Apache2 Ubuntu Default Page: It works
Service Info: OS: Linux; CPE: cpe:/o:linux:linux_kernel

Service detection performed. Please report any incorrect results at https://nmap.org/submit/ .
Nmap done: 1 IP address (1 host up) scanned in 29.01 seconds
  • dig
┌──(kali㉿kali)-[~]
└─$ dig AXFR bank.htb @10.10.10.29

; <<>> DiG 9.18.12-1-Debian <<>> AXFR bank.htb @10.10.10.29
;; global options: +cmd
bank.htb.               604800  IN      SOA     bank.htb. chris.bank.htb. 5 604800 86400 2419200 604800
bank.htb.               604800  IN      NS      ns.bank.htb.
bank.htb.               604800  IN      A       10.10.10.29
ns.bank.htb.            604800  IN      A       10.10.10.29
www.bank.htb.           604800  IN      CNAME   bank.htb.
bank.htb.               604800  IN      SOA     bank.htb. chris.bank.htb. 5 604800 86400 2419200 604800
;; Query time: 231 msec
;; SERVER: 10.10.10.29#53(10.10.10.29) (TCP)
;; WHEN: Tue Jun 06 16:43:22 BST 2023
;; XFR size: 6 records (messages 1, bytes 171)
  • After adding records to /etc/hosts
└─$ gobuster dir -u http://bank.htb/ -w /usr/share/seclists/Discovery/Web-Content/raft-medium-files-lowercase.txt   
===============================================================
Gobuster v3.5
by OJ Reeves (@TheColonial) & Christian Mehlmauer (@firefart)
===============================================================
[+] Url:                     http://bank.htb/
[+] Method:                  GET
[+] Threads:                 10
[+] Wordlist:                /usr/share/seclists/Discovery/Web-Content/raft-medium-files-lowercase.txt
[+] Negative Status codes:   404
[+] User Agent:              gobuster/3.5
[+] Timeout:                 10s
===============================================================
2023/06/06 16:46:01 Starting gobuster in directory enumeration mode
===============================================================
/login.php            (Status: 200) [Size: 1974]
/index.php            (Status: 302) [Size: 7322] [--> login.php]
/logout.php           (Status: 302) [Size: 0] [--> index.php]
/.htaccess            (Status: 403) [Size: 284]
/.                    (Status: 302) [Size: 7322] [--> login.php]
/.html                (Status: 403) [Size: 280]
/support.php          (Status: 302) [Size: 3291] [--> login.php]
/.php                 (Status: 403) [Size: 279]
/.htpasswd            (Status: 403) [Size: 284]
/.htm                 (Status: 403) [Size: 279]
/.htpasswds           (Status: 403) [Size: 285]
/.htgroup             (Status: 403) [Size: 283]
/wp-forum.phps        (Status: 403) [Size: 288]
/.htaccess.bak        (Status: 403) [Size: 288]
/.htuser              (Status: 403) [Size: 282]
/.ht                  (Status: 403) [Size: 278]
/.htc                 (Status: 403) [Size: 279]
/dispatch.fcgi        (Status: 403) [Size: 288]
/mytias.fcgi          (Status: 403) [Size: 286]
/test.fcgi            (Status: 403) [Size: 284]
Progress: 16243 / 16245 (99.99%)

└─$ gobuster dir -u http://bank.htb/ -w /usr/share/seclists/Discovery/Web-Content/raft-medium-directories-lowercase.txt 
===============================================================
Gobuster v3.5
by OJ Reeves (@TheColonial) & Christian Mehlmauer (@firefart)
===============================================================
[+] Url:                     http://bank.htb/
[+] Method:                  GET
[+] Threads:                 10
[+] Wordlist:                /usr/share/seclists/Discovery/Web-Content/raft-medium-directories-lowercase.txt
[+] Negative Status codes:   404
[+] User Agent:              gobuster/3.5
[+] Timeout:                 10s
===============================================================
2023/06/06 16:49:19 Starting gobuster in directory enumeration mode
===============================================================
/inc                  (Status: 301) [Size: 301] [--> http://bank.htb/inc/]
/uploads              (Status: 301) [Size: 305] [--> http://bank.htb/uploads/]
/assets               (Status: 301) [Size: 304] [--> http://bank.htb/assets/]
/server-status        (Status: 403) [Size: 288]
  • gobuster
┌──(kali㉿kali)-[~]
└─$ gobuster dir -u http://bank.htb/ -w /usr/share/seclists/Discovery/Web-Content/directory-list-2.3-medium.txt -t 50
===============================================================
Gobuster v3.5
by OJ Reeves (@TheColonial) & Christian Mehlmauer (@firefart)
===============================================================
[+] Url:                     http://bank.htb/
[+] Method:                  GET
[+] Threads:                 50
[+] Wordlist:                /usr/share/seclists/Discovery/Web-Content/directory-list-2.3-medium.txt
[+] Negative Status codes:   404
[+] User Agent:              gobuster/3.5
[+] Timeout:                 10s
===============================================================
2023/06/06 17:16:22 Starting gobuster in directory enumeration mode
===============================================================
/uploads              (Status: 301) [Size: 305] [--> http://bank.htb/uploads/]
/assets               (Status: 301) [Size: 304] [--> http://bank.htb/assets/]
/inc                  (Status: 301) [Size: 301] [--> http://bank.htb/inc/]
/server-status        (Status: 403) [Size: 288]
/balance-transfer     (Status: 301) [Size: 314] [--> http://bank.htb/balance-transfer/]
Progress: 220431 / 220561 (99.94%)
  • Web server

Monday, June 5, 2023 | 4 minutes Read