LinkFinder

Extract endpoints from JavaScript files

Recon & OSINT5 commands

#js#link#endpoint#recon#python

Installation

1Clone the repository

2Install Python dependencies

3Verify installation

# Clone the repository
git clone https://github.com/GerbenJavado/LinkFinder.git
cd LinkFinder

# Install dependencies
pip install -r requirements.txt

# Verify
python3 linkfinder.py -h

Basic Usage

Extract URLs and endpoints from JavaScript files

# Scan a remote JS file
python3 linkfinder.py -i https://example.com/script.js -o cli

# Scan with HTML output
python3 linkfinder.py -i https://example.com/script.js -o html

# Scan a local JS file
python3 linkfinder.py -i script.js -o cli

# Output to file
python3 linkfinder.py -i https://example.com/script.js -o html -d output_dir

Command Reference

5 commands

1Input URL or file

-i

2Output format (cli/html)

-o

3Output directory for HTML

-d

4Regex for custom endpoint matching

-r

5Include subdomains

-b

When to Use

Finding API endpoints in JavaScript files

Reconnaissance on modern web applications

Bug bounty JS endpoint discovery

Mapping application attack surface

Analyzing third-party JavaScript integrations

Notes & Tips

Uses regex and JS parsing to extract endpoints

Supports both remote and local JS file analysis

HTML output provides an interactive view of results

Can be piped into other recon tools

Works well with gau and katana for URL collection

Common Errors & Solutions

ModuleNotFoundError

Run: pip install -r requirements.txt

No endpoints found

Check if the JS file contains URLs; try with -r for custom regex

SSL errors

Use HTTP URL or check certificate validity

# Scan a remote JS file python3 linkfinder.py -i https://example.com/script.js -o cli # Scan with HTML output python3 linkfinder.py -i https://example.com/script.js -o html # Scan a local JS file python3 linkfinder.py -i script.js -o cli # Output to file python3 linkfinder.py -i https://example.com/script.js -o html -d output_dir