Tag port forwarding

Hack The Box: Backfire Machine Walkthrough – Medium Difficulty

Successfully rooted another Hack The Box machine by chaining multiple vulnerabilities across custom C2 frameworks. For the user flag, we exploited an SSRF vulnerability (CVE-2024-41570) in the Havoc C2 framework to access internal services, which we then chained with an authenticated RCE to execute arbitrary commands and gain a reverse shell as the ilya user. To maintain stable access, SSH keys were added for persistence, allowing us to retrieve the user.txt flag. For the root flag, we targeted the Hardhat C2 service by forging a valid JWT with a Python script to create an admin user, which provided shell access as sergej. Upon privilege escalation analysis, we found that sergej had sudo access to the iptables-save binary. This was abused to overwrite the /etc/sudoers file and escalate to root, ultimately retrieving the root.txt flag. Another great learning experience on the path to mastering offensive security!

#HackTheBox #CyberSecurity #InfoSec #RedTeam #CTF #PrivilegeEscalation #RCE #SSRF #Linux #HTB #EthicalHacking #PenetrationTesting #HavocC2 #HardhatC2 #JWT #SudoExploit #OSCP #BugBounty

Hack The Box: Heal Machine Walkthrough – Medium Difficulty

Writeup Summary: Heal (Hack The Box)

This box involved thorough enumeration that uncovered multiple subdomains, including a Ruby on Rails API. Initial access was gained by chaining a Local File Inclusion vulnerability with password cracking and exploiting a LimeSurvey plugin upload vulnerability. Privilege escalation was achieved by identifying and exploiting an exposed Consul service accessible through SSH port forwarding.

This challenge showcased key red teaming skills: web application exploitation, misconfiguration abuse, credential harvesting, and lateral movement.

#HackTheBox #CyberSecurity #RedTeam #PrivilegeEscalation #BugBounty #WebSecurity #Infosec #CTF #HTB #OffensiveSecurity #LinuxExploitation

HackTheBox – BigBang Machine Walkthrough (Hard Difficulty)

Chained exploitation through misconfigured web app and internal services. We started by exploiting a WordPress plugin vulnerability (CVE-2023-26326) to upload files, followed by a file read vulnerability (CVE-2024-2961) for remote code execution. From there, we cracked the database credentials, gained SSH access as the shawking user, and leveraged a vulnerable API endpoint to escalate to root. This highlights how overlooked configurations and service misconfigurations can lead to a full server compromise.

#CTF #PrivilegeEscalation #WebSecurity #CommandInjection #SSH #WordPress #LinuxPentesting #BugBounty #HackTheBox #RedTeam #CyberSecurity

Hack The Box: Alert Machine Walkthrough – Easy Difficulty

We discovered an XSS vulnerability in .md file uploads and the Contacts tab. By embedding an XSS payload and sharing the link, we extracted data from messages.php, revealing a file parameter vulnerable to LFI. This led us to /var/www/statistics.alert.htb/.htpasswd, which contained a hashed password. Using hashid, we identified it as MD5 (APR1-MD5) and cracked it with Hashcat, retrieving the password ManchesterUnited. With these credentials, we accessed the system and captured the user flag.

After logging into statistics.alert.htb, we found port 8080 open. Using SSH port forwarding, we accessed a monitoring site but needed to locate its directory. Checking ps aux, we found it in /opt/website-monitor. We confirmed file access by testing a basic PHP file, which worked. We then uploaded a PentestMonkey reverse shell, but it didn’t execute. To ensure success, we crafted a reliable PHP shell, triggered it, and gained root access.

🔍 #CyberSecurity #BugBounty #EthicalHacking #PenTesting #CTF #HTB #WebSecurity #XSS #LFI #PrivilegeEscalation #Hacking