A simple Python3 script to generate all leetspeak variants of a given wordlist.

Using leetspeakgen.py to pre-generate all leetspeak variants.

For example, if your wordlist contains password, LeetSpeakGen will produce:

• password
• p@ssword
• passw0rd
• p@ssw0rd
• p@$w0rd
• p@$$w0rd
• …and so on for every combination of a→@, o→0, e→3, i→1, s→$.

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Generally, if you want combinatoric coverage (e.g., all permutations of substitutions), you'll need to either:

a) Write many variants of the rule

or

b) Use external tools to pre-process the wordlist (e.g., rsmangler, mentalist, crunch, or a Python script).

This is that Python script...

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🚀 Features

• Reads any plaintext password list.
• Emits all combinations of common leetspeak substitutions:
  • a ↔ @
  • o ↔ 0
  • e ↔ 3
  • i ↔ 1
  • s ↔ $
• Deduplicates variants so output is unique.
• Zero external dependencies beyond Python3’s standard library.

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📋 Prerequisites

• Python 3.6+ installed on your system.
• (Optional) UNIX-like shell (bash, zsh, etc.) or Windows WSL2.

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⚙️ Installation

Clone your GitHub repo (or download leetspeakgen.py directly):

git clone https://github.com/ThomasRyanforty/leetspeakgen.git
cd leetspeakgen
chmod +x leetspeakgen.py

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💡 Usage

./leetspeakgen.py -l <input-wordlist> -o <output-wordlist>

• l, --list Path to your original password list.
• o, --output Path for the generated leetspeak variants.

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Examples

Generate leet variants for passwords-cewl.txt

./leetspeakgen.py -l passwords-cewl.txt -o passwords-cewl-leetspeak.txt