If you are using Kali Linux or Parrot OS, you already have access to the world's most famous wordlists located in the /usr/share/wordlists/ directory:
If you need help based on target information?
You do not always need to build a passlist.txt from scratch. The cybersecurity community maintains several highly effective, open-source wordlists.
To use a password list in Hydra, you must leverage specific command-line flags. Understanding how Hydra handles these inputs prevents syntax errors and ensures your attack runs as intended.
hydra -l admin -P passlist.txt 10.0.0.5 http-post-form "/login.php:user=^USER^&pass=^PASS^:F=incorrect" passlist txt hydra
: Hydra’s strength lies in parallelized attacks , allowing it to launch multiple connection attempts simultaneously from the list to significantly speed up the cracking process. Common Passlist Locations & Sources
While generic lists are great, targeted penetration tests require customized wordlists. If you are auditing a specific organization, a generic list might fail, whereas a tailored list will succeed. 1. Using CeWL for Custom Web Scrapes
It should only be used on systems you own or have explicit, written permission to test. Unauthorized access to computer systems is illegal and carries severe consequences.
: hydra -l admin -P /usr/share/wordlists/rockyou.txt ssh://192.168.1.1 FTP : hydra -l user -P passlist.txt ftp://192.168.1.1 If you are using Kali Linux or Parrot
Location in Kali Linux: /usr/share/wordlists/rockyou.txt.gz (remember to unzip it first).
19 Feb 2026 — This command attempts to guess the password of the user “admin” using a password list stored in passwords.tx. cheatsheets/security/tools/hydra.md at main - GitHub
The gold standard of password cracking. It contains over 14 million passwords leaked from a 2009 data breach.
This guide, and Hydra itself, are for .
However, Hydra is only as smart as the data you feed it. To successfully audit a system, you need a highly optimized password list, commonly saved as a passlist.txt file.
Use Mentalist or Hashcat's rule engine to append common variations to these base words (e.g., adding current years like 2025 or 2026 , or symbols like ! ). Syntax and Command Execution for passlist.txt
Create a targeted list based on your target's environment (e.g., "Company2025!", "Admin123"). Default Lists: Use built-in lists like those found in Kali Linux /usr/share/wordlists/ pw-inspector:
Hydra will print: