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Hack The Box: Editor Machine Walkthrugh – Easy Difficulity

User access was achieved by enumerating an XWiki instance running on port 8080, identifying its vulnerable version, and exploiting an unauthenticated RCE in the Solr component (CVE-2025-24893). The foothold exposed plaintext database credentials in the XWiki configuration file, which were reused for the system user, allowing a successful SSH login as oliver.

Root access came from a misconfigured Netdata installation. Several root-owned plugins were SUID and group-writable, and oliver belonged to the netdata group. Replacing the ndsudo plugin with a custom SUID payload allowed Netdata to execute it as root, granting full system compromise and the root flag.

#HackTheBox #CyberSecurity #PenetrationTesting #PrivilegeEscalation #EthicalHacking #RedTeam #CTF #XWiki #CVE2025 #Netdata #LinuxSecurity

Impact Assessment: How Guest Access Affects Threat Detection in Office 365

Currently working on a deep-dive into a critical Teams guest access behaviour I discovered during testing.
My research shows how attackers can spin up fresh M365 tenants and completely bypass Defender protections by pulling users into external guests.
I’m documenting the attack flow, detection queries, and practical steps organisations can take to reduce exposure — learning a lot along the way.

#CyberSecurity #LearningInPublic #ThreatResearch #RedTeam #BlueTeam #Microsoft365 #Defender #SecurityCommunity

Hack The Box: Era Machine Walkthrough – Medium Difficulity

Compromising the Era HTB machine involved chaining multiple weaknesses across the web layer and system layer. Initial access was obtained through an IDOR flaw in a file-sharing platform, allowing unrestricted file retrieval by enumerating numeric IDs. Leaked backups exposed source code, plaintext credentials, and an SSH private key, enabling lateral movement as eric. Further analysis uncovered a root-executed integrity-check binary in a world-writable directory. By extracting its signature, injecting it into a backdoored replacement, and waiting for the cron job to trigger, privileged execution was achieved. A resulting callback delivered full root access and allowed retrieval of the final flag.

#HTB #HackTheBox #CyberSecurity #Pentesting #WebSecurity #IDOR #PrivilegeEscalation #LinuxSecurity #RedTeam #CTF #InfoSec

Hack The Box: Mirage Machine Walkthrough – Hard Difficulity

Compromising the Mirage domain started with a simple clue hidden in an exposed NFS share. Inside a PDF report was a missing DNS record—just enough to pivot. By hijacking the DNS entry, I intercepted NATS JetStream traffic and captured real authentication logs, including valid credentials. After fixing the system time and obtaining a Kerberos TGT, I gained my first foothold on the domain controller and captured the user flag.

From there, the path to domain dominance unfolded through Active Directory weaknesses. An SPN ticket leak led to a cracked password, which opened the door to BloodHound reconnaissance and more credentials. I reset a disabled user’s password, extracted a service account’s managed password, and used Certipy to transform certificate abuse into full machine-level impersonation. With Resource-Based Constrained Delegation enabled, I forged Kerberos tickets, dumped every domain hash, and finally authenticated as Administrator—securing the root flag.

#CyberSecurity #PenetrationTesting #Kerberos #ActiveDirectory #RedTeam #HackTheBox #Infosec #PrivilegeEscalation

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: RustyKey Machine Walkthrough – Hard Difficulity

Authenticated to rustykey.htb as bb.morgan after exploiting Kerberos flows and resolving a time sync issue: obtained a TGT (bb.morgan.ccache), set KRB5CCNAME, and used evil‑winrm to capture the user flag.
Escalated to SYSTEM by abusing machine account and delegation: IT‑COMPUTER3$ was used to modify AD protections and reset ee.reed’s password, S4U2Self/S4U2Proxy impersonation produced backupadmin.ccache, and Impacket was used to deploy a service payload to achieve a SYSTEM shell and capture the root flag.

#CyberSecurity #RedTeam #Kerberos #ActiveDirectory #PrivilegeEscalation #HackTheBox #Impacket #WindowsAD

Hack The Box: Voleur Machinen Walkthrough – Medium Difficulty

Cracked a password-protected Excel on an SMB share to recover service-account credentials, used Kerberos to access a user account and capture user.txt, then leveraged AD write permissions to restore a deleted admin, decrypt DPAPI artefacts for high‑priv creds, and access the DC to grab root.txt.

#HackTheBox #ADSecurity #Kerberos #DPAPI #RedTeam #CTF

Hack The Box: Artificial Machine Walkthrough – Easy Diffucilty

Hacking the “Artificial” Machine on Hack The Box!

Conquered the “Artificial” machine on Hack The Box! 🕵️‍♂️ I scanned the target, identified a web server on port 80, and created an account to access its dashboard, where I uploaded a malicious .h5 file to trigger a reverse shell. Using a Docker environment, I gained a shell as the app user, found a SQLite database (users.db), and cracked its password hashes to reveal credentials for user “gael,” allowing me to grab the user flag via SSH from user.txt. For root, I discovered port 9898 running Backrest, forwarded it, and enumerated backup files, finding a bcrypt-hashed password in config.json. Decoding a base64 value yielded a plaintext password, granting access to the Backrest dashboard, where I exploited the RESTIC_PASSWORD_COMMAND to trigger a root shell and secure the root flag from root.txt.

#Cybersecurity #HackTheBox #CTF #PenetrationTesting #PrivilegeEscalation

Hack The Box: DarkCorp Machine Walkthrough – Insane Difficulity

Finished the Insane-level DarkCorp box on Hack The Box. Initial foothold came from registering on a webmail portal and abusing a contact form to deliver a payload that resulted in a reverse shell. From there I enumerated the app and DB, identified SQL injection and extracted hashes (cracked one to thePlague61780), recovered DPAPI master key material and additional credentials (Pack_beneath_Solid9!), and used those artifacts to escalate to root and retrieve root.txt. Valuable practice in web vectors, SQLi exploitation, credential harvesting, DPAPI analysis, and Windows privilege escalation. Happy to share high-level notes or mitigations.

#HackTheBox #Infosec #RedTeam #Pentesting #WindowsSecurity #CredentialHunting #CTF

Hack The Box: Tombwatcher Machine Walkthrough – Medium Difficulty

I cracked a Kerberos TGS for Alfred (password: basketballl), used BloodHound-guided enumeration and account takeover to obtain John’s machine credentials and retrieved the user flag (type user.txt); then I abused a misconfigured certificate template (ESC15) with Certipy to request an Administrator certificate, obtained a TGT (administrator.ccache), extracted the Administrator NT hash and used it to access the DC and read the root flag (type root.txt).

#HackTheBox #RedTeam #ActiveDirectory #Kerberos #CertAuth #BloodHound #OffensiveSecurity #Infosec #PrivilegeEscalation