Description

I was developing jsleak during most of my free time for my own need.It is easy-to-use command-line tool designed to uncover secrets and links in JavaScript files or source code. The jsleak was inspired by Linkfinder and regexes are collected from multiple sources.

Features:

• Discover secrets in JS files such as API keys, tokens, and passwords.
• Identify links in the source code.
• Complete Url Function
• Concurrent processing for scanning of multiple Urls
• Check status code if the url is alive or not

Latest Update

Jsleak now supports regex patterns from secrets-patterns-db https://github.com/mazen160/secrets-patterns-db.

If you want to use your own custom regex patterns, you can place them in a YAML file following the template below.

patterns:
  - pattern:
      name: Amazon MWS Auth Token
      regex: "amzn\\.mws\\.[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}"
      confidence: low

Installation

If you are using old version of golang (go 1.15, 1.16) , use the following command to install jsleak.

go get github.com/channyein1337/jsleak

If you are using latest version of go (1.17+) , use the following command to install.

go install github.com/channyein1337/jsleak@latest

Usage

Choose a YAML file from the secrets-patterns-db. If you’re not sure which one to pick, consider using: https://raw.githubusercontent.com/mazen160/secrets-patterns-db/refs/heads/master/datasets/trufflehog-v3.yaml

Run jsleak with Your Selected Regex File

echo "http://testphp.vulnweb.com/" | jsleak -t trufflehog-v3.yaml -s

To display help message

jsleak -h

Secret Finder

echo http://testphp.vulnweb.com/ | jsleak  -t secret.yaml -s

Link Finder

echo http://testphp.vulnweb.com/ | jsleak -l

Complete Url

echo http://testphp.vulnweb.com/ | jsleak -e

Check Status

echo http://testphp.vulnweb.com/ | jsleak -c 20 -k

You can also use multiple flags

echo http://testphp.vulnweb.com/ | jsleak -c 20 -l -s 

Running with Urls

cat urls.txt | jsleak -l -s -c 30

To Do

• Scan secret on completeURL with 200 response.
• Add Version flag.
• Support scanning local files.
• Support scanning apk files.
• Update Regex.
• Support mulitple user agents.
• Support color output

Credit and thanks to all the following resources

• https://github.com/GerbenJavado/LinkFinder
• https://github.com/0xsha/GoLinkFinder