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Hack The Box: Outbound Machine Walkthrough – Easy Difficulity

Successfully completed the Outbound HTB machine. Initial access was gained by exploiting CVE‑2025‑49113 in Roundcube 1.6.10 using Tyler’s credentials, which allowed remote code execution.

Investigation of Roundcube’s configuration revealed database credentials, enabling decryption of Jacob’s session data and retrieval of his plaintext password. Using this, SSH access was obtained to capture the user flag.

Privilege escalation was achieved via CVE‑2025‑27591 by exploiting a world-writable /var/log/below directory, allowing command execution as root and retrieval of the root flag. This walkthrough highlights the importance of secure configuration, patching, and proper permission management.

#HackTheBox #CyberSecurity #PenTesting #EthicalHacking #VulnerabilityExploitation #Roundcube #PrivilegeEscalation #LinuxSecurity #CVE2025

Hack The Box: Certificate Machine Walkthrough – Hard Difficulty

I recently completed the “Certificate” challenge on Hack The Box: after extracting and cracking a captured authentication hash I gained access to a user account (lion.sk) and retrieved the user flag, then progressed to full system compromise by responsibly exploiting weak certificate‑based authentication controls—obtaining and converting certificate material into elevated credentials to capture the root flag. The exercise reinforced how misconfigurations in certificate services and poor time synchronization can create powerful escalation paths, and highlighted the importance of least‑privilege, strict enrollment policies, and monitoring certificate issuance. Great hands‑on reminder that defensive hygiene around PKI and identity services matters.

#CyberSecurity #HTB #Infosec #ADCS #Certificates #PrivilegeEscalation #RedTeam #Pentesting

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