Enhanced++ URLencode Bash Function for Ethical Hackers

By /

Featured Image
URL encoding is a crucial technique in cybersecurity, especially for penetration testers and ethical hackers. Mark Green’s enhanced `urlencode` bash function provides advanced features to fine-tune encoding behavior, making it a powerful tool for payload manipulation and web testing.

Key Features of `urlencode_v2.sh`

  • Exclude specific characters (-e or --exclude) to avoid encoding symbols like ., ?, &, and =.
  • Standard exclusions (-s or --standard) to skip encoding ., ?, and `&` by default.
  • Lowercase hex output (-l or --lower) for compatibility with certain systems.
  • Piping support to encode input directly from `echo` or other commands.
  • Help flag (-h or --help) for quick reference.

Installation & Setup

wget --user-agent "Mozilla" https://lnkd.in/eiUk_AWV -O urlencode_v2.sh 
cat urlencode_v2.sh >> ~/.bashrc 
source ~/.bashrc

You Should Know: Practical Examples

1. Basic URL Encoding

urlencode "https://www.example.com?id=1&name=test" 
 Output: https%3A%2F%2Fwww%2Eexample%2Ecom%3Fid%3D1%26name%3Dtest

2. Excluding Specific Characters

urlencode -e ".?&=" "https://www.example.com?id=1&name=test" 
 Output: https%3A%2F%2Fwww.example.com?id=1&name=test

3. Using Standard Exclusion Mode

urlencode -s "https://www.example.com?id=1&name=test" 
 Output: https%3A%2F%2Fwww.example.com?id=1&name=test

4. Piping Input for Automation

echo "https://www.example.com" | urlencode -s 
 Output: https%3A%2F%2Fwww.example.com

5. Lowercase Hex Encoding

urlencode -l "https://www.example.com" 
 Output: https%3a%2f%2fwww%2eexample%2ecom

6. Real-World Example (Google API URL)

urlencode -e "?&" "https://play.google.com/log?format=json&hasfast=true" 
 Output: https%3A%2F%2Fplay%2Egoogle%2Ecom%2Flog?format%3Djson&hasfast%3Dtrue

What Undercode Say

URL encoding is essential for bypassing filters, testing injection vulnerabilities, and crafting malicious payloads (ethically, of course). This enhanced `urlencode` function provides flexibility, making it superior to basic encoding tools.

Related Linux & Windows Commands

  • Linux:
    Using Python for URL encoding 
python3 -c "import urllib.parse; print(urllib.parse.quote(input('Text to encode: '))"

Using curl with encoded URLs 
curl -G --data-urlencode "param=value" http://example.com

Using Perl for encoding 
perl -MURI::Escape -e 'print uri_escape($ARGV[bash]);' "test&data"

  • Windows (PowerShell):

    Using curl in PowerShell 
curl -Uri "http://example.com" -Body @{param = "value"}

Expected Output:

A fully functional, customizable URL encoder that integrates seamlessly into penetration testing workflows.

Prediction

As web applications evolve, URL manipulation techniques will remain critical for security testing. Tools like this will become even more refined, supporting AI-driven payload generation in the future.

Reference:

References:

Reported By: Activity 7325377553488109569 – Hackers Feeds
Extra Hub: Undercode MoN
Basic Verification: Pass ✅

Join Our Cyber World:

💬 Whatsapp | 💬 Telegram

Related Posts: