CTFs

HTB Starting Point – Guard

$./portScan.sh Ssh port is open. Let’s try the last ssh user we obtained.   $ssh -i id_rsa daniel@10.10.10.50 The SSH login gives us access to a restricted shell, where the commands like find, cat and python are disabled.  We are unable to read user.txt from this shell. Man command can be used to spawn a bash shell. Once the command opens the manual, we can enter the following command to spawn a

HTB Starting Point – Markup

 $./ennumeration.sh Open ports: 22/tcp open ssh OpenSSH for_Windows_8.1 (protocol 2.0) 80/tcp open http Apache httpd 2.4.41 ((Win64) OpenSSL/1.1.1c PHP/7.2.28) 443/tcp open ssl/http Apache httpd 2.4.41 ((Win64) OpenSSL/1.1.1c PHP/7.2.28) $gobuster dir -u http://10.10.10.49 -w /usr/share/wordlists/dirb/common.txt Apache service is running. Let’s try to access the site. Access to http://10.10.10.49 In the previous machine, we found credentials stored in an SQL dump.  Let’s try to reuse them, to log into the application.  The

HTB Starting Point – Included

$./ennumeration.sh Open ports detected:80/tcp open  http   Apache httpd 2.4.29 ((Ubuntu)) Access to: http://10.10.10.55Url redirection to http://10.10.10.55/?file=index.php Use Owasp-Zap to scan this site: This machine is vulnerable to a File Inclusion Path Traversal attack. According to the application description: The Path Traversal attack technique allows an attacker access to files, directories, and commands that potentially reside outside the web document root directory. An attacker may manipulate a URL in such a

HTB Starting Point – Pathfinder

 $./ennumeration.sh Open ports detected:  WinRM 2.0 (Microsoft Windows Remote Management) uses port 5985/tcp for HTTP and 5986/tcp for HTTPS by default.  Using the credentials we obtained in a previous machine; sandra:Password1234!, we can attempt to enumerate Active Directory. We can achieve this using BloodHound. There is a python bloodhound ingester, which can be found here.  We can attempt to enumerate Active Directory. Try using old machine credentials… BloodHound is a single

HTB Starting point – Shield

$ ./portScan.sh Port 80 is open (Microsoft IIS running) Let’s try to see what’s inside… $ gobuster dir -u http://10.10.10.29/wordpress-w /usr/share/wordlists/dirb/common.txt There is a WordPress instance. http://10.10.10.29/wordpress/ Access to: http://10.10.10.29/wordpress/wp-login.php Following the last machine’s general rule (let’s try old credentials): admin/P@s5w0rd! will work fine. Access to the WordPress Control Panel. Let’s use a wp_admin_shell_upload Metasploit exploit to obtain a functional shell. $ msfconsolemsf5 > use exploit/unix/webapp/wp_admin_shell_upload What do we need to use this exploit?

HTB Starting Point – Vaccine

kali@kali:~/ctf-tools$ ./portScan.sh Remember we found a ftp user in the last machine  Try ftpuser / mc@F1l3ZilL4 and we’ll access to this ftp kali@kali:~/ctf-tools$ ftp 10.10.10.46 ftp> dir ftp> get backup.zip This file is password protected kali@kali:~/htb/vaccine$ sudo zip2john backup.zip > hash zip2john processes input ZIP files into a format to be used with John the Ripper kali@kali:~/htb/vaccine$ sudo john hash –fork=4 –wordlist=»/opt/rockyou.txt» Different files are found inside the zip file. Open

HTB Starting point – Oopsie

ruben@kali:~/htb/oopsie$ sudo nmap -T4 -p- -A 10.10.10.28 We have port 80 open with apache. ruben@kali:~/htb/oopsie$ sudo nikto -h http://10.10.10.28 According to this result, we have a login site: /cdn-cgi/login/ ruben@kali:~/htb/oopsie$ gobuster dir -u http://10.10.10.28 -w /usr/share/wordlists/dirb/common.txt -e There is an upload directory. Access to: http://10.10.10.28/cdn-cgi/login Test credentials from the last machine: admin/MEGACORP_4dm1n!! The upload section is restricted to super admin. From the accounts section using BurpSuite: We have a cookie with

HTB Starting Point – Archetype

kali@kali:~/htb/starting point$ ports=$(nmap -p- –min-rate=1000 -T4 10.10.10.27 | grep ^[0-9] | cut -d ‘/’ -f 1 | tr ‘\n’ ‘,’ | sed s/,$//) kali@kali:~/htb/starting point$ echo $ports kali@kali:~/htb/starting point$  nmap -sC -sV -p$ports 10.10.10.27 Ports 445 and 1433 are open -> file sharing (SMB)  i SQL Server. kali@kali:~/htb/starting point$ smbclient -N -L \\\\10.10.10.27\\ kali@kali:~/htb/starting point$ smbclient -N \\\\10.10.10.27\\backups dtsConfig file: ruben@kali:~/tools/impacket/examples$ mssqlclient.py ARCHETYPE/sql_svc@10.10.10.27 -windows-auth Create a new file and save it

IOLI Crackme 0x05 solution

Hello, This is another IOLI crackme challenge solution. root@kali:~/IOLI-crackme/bin-linux# r2 crackme0x05 pop 4 bytes from esp and jump there. Pop 4 bytes from esp and jump there. Apparently this levels so similar to the past one, so let’s try the same method with 16 as cmp operand. root@kali:~/IOLI-crackme/bin-linux# ./crackme0x05

IOLI Crackme 0x04 solution

Hello, This is another IOLI crackme challenge solution. root@kali:~/IOLI-crackme/bin-linux# r2 crackme0x04 Pay attention to these instructions: These section is where a number is compared to something and if true the password will be valid.Something is compared against 15 (0xf). Let’s find out which is the other operand. These section reminds me a loop. What is being compared to 15 is the parameter of the app, in other words the password.