3 posts tagged with "Password Cracking"

Red Teaming | Password Attacks | Summary:​

This room is designed to teach about various strategies and techniques used in cracking or guessing passwords. It covers both offline and online methods, including dictionary and brute-force attacks, rule-based attacks, and custom rules.

The room emphasizes password profiling, teaching users how to create effective wordlists using default, weak, leaked, combined, and username sources.

Other topics include keyspace techniques, CUPP (Custom Password Profile), and online attacks targeting FTP, SMTP, SSH, and HTTP login pages. Additionally, it introduces the concept of password spraying attacks.

Summary:​

We test connectivity and scan the target, then use anonymous FTP access to download and crack a zip archive using John the Ripper. Analyzing the source code and exploiting a hardcoded hash gives us web app access via compromised credentials.

We identify an SQL injection vulnerability, gain control, and upgrade to a reverse shell with low-privileged access. As we enumerate the machine, we find privilege escalation opportunities and exploit SUDO vulnerabilities to gain root access, ultimately obtaining both user and root flags.

Machine Name: Vaccine | Difficulty: Easy | OS: Linux

Summary:​

This walkthrough outlines the attack vector used to system access on the Responder machine on Hack The Box, where an attacker would exploit the NetBIOS vulnerability to capture NTLMv2 hashes, which are then cracked using John the Ripper to obtain valid credentials. These credentials can be leveraged to ultimately gain access to root flag on the target machine.

Machine Name: Responder | Difficulty: Easy | OS: Windows