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https://github.com/003random/getJS

A tool to fastly get all javascript sources/files
https://github.com/003random/getJS

bugbounty extract files go golang goquery hacking hacktoberfest javascript parser pentesting recon reconnaissance urls

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A tool to fastly get all javascript sources/files

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README

        

JavaScript Extraction CLI & Package












This is a powerful tool for extracting JavaScript sources from URLs and web pages / HTTP responses. It offers a command-line interface (CLI) for straightforward URL processing and a package interface for custom integrations, making it ideal for pentesters, bug bounty hunters, and developers needing to extract JS sources efficiently.
## Table of Contents

- [Installation](#installation)
- [CLI Usage](#cli-usage)
- [Options](#options)
- [Examples](#examples)
- [Package Usage](#package-usage)
- [Importing the Extractor](#importing-the-extractor)
- [Example](#example)
- [Version Information](#version-information)
- [Contributing](#contributing)
- [License](#license)

## Installation

To install `getJS`, use the following command:

`go install github.com/003random/getJS/v2@latest`

## CLI Usage

### Options

`getJS` provides several command-line options to customize its behavior:

- `-url string`: The URL from which JavaScript sources should be extracted.
- `-input string`: Optional URLs input files. Each URL should be on a new line in plain text format. Can be used multiple times.
- `-output string`: Optional output file where results are written to. Can be used multiple times.
- `-complete`: Complete/Autofill relative URLs by adding the current origin.
- `-resolve`: Resolve the JavaScript files. Can only be used in combination with `--complete`.
- `-threads int`: The number of processing threads to spawn (default: 2).
- `-verbose`: Print verbose runtime information and errors.
- `-method string`: The request method used to fetch remote contents (default: "GET").
- `-header string`: Optional request headers to add to the requests. Can be used multiple times.
- `-timeout duration`: The request timeout while fetching remote contents (default: 5s).

### Examples

#### Extracting JavaScript from a Single URL

`getJS -url https://destroy.ai`

or

`curl https://destroy.ai | getJS`

#### Using Custom Request Options

`getJS -url "http://example.com" -header "User-Agent: foo bar" -method POST --timeout=15s`

#### Processing Multiple URLs from a File

`getJS -input foo.txt -input bar.txt`

#### Saving Results to an Output File

`getJS -url "http://example.com" -output results.txt`

## Package Usage

### Importing the Extractor

To use `getJS` as a package, you need to import the `extractor` package and utilize its functions directly.

### Example

```Go
package main

import (
"fmt"
"log"
"net/http"
"net/url"

"github.com/003random/getJS/extractor"
)

func main() {
baseURL, err := url.Parse("https://google.com")
if (err != nil) {
log.Fatalf("Error parsing base URL: %v", err)
}

resp, err := extractor.FetchResponse(baseURL.String(), "GET", http.Header{})
if (err != nil) {
log.Fatalf("Error fetching response: %v", err)
}
defer resp.Body.Close()

// Custom extraction points (optional).
extractionPoints := map[string][]string{
"script": {"src", "data-src"},
"a": {"href"},
}

sources, err := extractor.ExtractSources(resp.Body, extractionPoints)
if (err != nil) {
log.Fatalf("Error extracting sources: %v", err)
}

// Filtering and extending extracted sources.
filtered, err := extractor.Filter(sources, extractor.WithComplete(baseURL), extractor.WithResolve())
if (err != nil) {
log.Fatalf("Error filtering sources: %v", err)
}

for source := range filtered {
fmt.Println(source.String())
}
}
```

## Version Information

This is the v2 version of `getJS`. The original version can be found under the tag [v1](https://github.com/003random/getJS/tree/v1).

## Contributing

Contributions are welcome! Please open an issue or submit a pull request for any bugs, feature requests, or improvements.

## License

This project is licensed under the MIT License. See the [LICENSE](https://github.com/003random/getJS/blob/master/LICENSE) file for details.