This script can be used to automate reporting of malware to the npm team, as a shortcut to npmjs.com/support.

npm-report-malware.py

#!/usr/bin/env python
# -*- coding: utf-8 -*-

"""
This script will automate reporting malware to the npm team.
It automates reporting via https://npmjs.com/support.

Before using it, either ensure you have the Requests module installed, or install it with
`pip install requests`.

To use it, run the script with the following arguments:
    python npm-report-malware.py
    -c "Add a comment to the report"
    -e "your-email@address.com"
    -r "Your name"
    package-name
    another-package-name@version
    ...

If you'd like you can add a `--dry-run` flag to the script to see what it would do without actually
sending the report.

This script is not officially supported. Your mileage may vary.

Author: Michael Scovetta <michael.scovetta@microsoft.com>
License: MIT
Copyright: Microsoft Corporation
Last Updated: 4/3/2022
"""

import json
import requests
import argparse
import re
import logging

logging.basicConfig(level=logging.ERROR)


class NpmReportMalware:
    packages = []
    comment = ""

    """
    Initializes the malware reporter.
    """

    def __init__(self):
        self.logger = logging.getLogger(__name__)
        self.session = requests.Session()
        self.csrf_token = self.get_csrf_token()
        self.logger.debug("csrf_token: %s", self.csrf_token)
        if not self.csrf_token:
            raise Exception("Unable to get CSRF token, cannot continue.")

    """
    Processes input and reports the packages.
    """

    def main(self):
        parser = argparse.ArgumentParser(description="Report malware to npm")
        parser.add_argument(
            "--dry-run", help="Do not report, just print what would be sent.", action="store_true"
        )
        parser.add_argument(
            "-c", "--comment", help="Include comments with the report", required=False
        )
        parser.add_argument("-r", "--reporter-name", help="Name of the reporter", required=True)
        parser.add_argument("-e", "--reporter-email", help="Email of the reporter", required=True)
        parser.add_argument(
            "package", type=str, nargs="+", help="Package(s) to report (@version optional)"
        )
        args = parser.parse_args()

        self.reporter_name = args.reporter_name
        self.reporter_email = args.reporter_email

        for package in args.package:
            parts = package.split("@")
            if len(parts) == 2:
                self.packages.append({"name": parts[0], "version": parts[1]})
            else:
                self.packages.append({"name": package, "version": None})
        self.comment = args.comment

        self.report_malware(args.dry_run)

    def get_csrf_token(self):
        try:
            response = self.session.get("https://www.npmjs.com/support?inquire=security")
            response.raise_for_status()
            match = re.search(
                '<input type="hidden" name="csrftoken" value="([^"]+)"/>',
                response.text,
                re.IGNORECASE,
            )
            if match:
                return match.group(1)
        except:
            self.logger.error("Failed to get csrf token", exc_info=True)
            return None

    def report_malware(self, dry_run=False):
        payload = {
            "inquire": "security",
            "security-inquire": "malware",
            "name": self.reporter_name,
            "email": self.reporter_email,
            "csrftoken": self.csrf_token,
        }

        if len(self.packages) == 1:
            if self.packages[0]["version"]:
                payload[
                    "subject"
                ] = f"Malware report in {self.packages[0]['name']}@{self.packages[0]['version']}"
            else:
                payload["subject"] = f"Malware report in {self.packages[0]['name']}"
            payload["package"] = self.packages[0]["name"]
            payload["version"] = self.packages[0]["version"] or "Unspecified"
        else:
            payload["subject"] = "Malware report in {} package(s)".format(len(self.packages))
            payload["package"] = "Multiple packages"
            payload["version"] = "Unspecified"

        # Create the message / comments
        _comment = ""
        if self.comment:
            _comment = self.comment.replace("\\n", "\n") + "\n\n"
        _comment += "Packages:\n"
        for package in self.packages:
            if package["version"]:
                _comment += f" - {package['name']}@{package['version']}\n"
            else:
                _comment += f" - {package['name']}\n"
        payload["message"] = _comment

        if dry_run:
            print("Payload:")
            print(json.dumps(payload, indent=2))
        else:
            try:
                response = self.session.post("https://www.npmjs.com/support", data=payload)
                response.raise_for_status()
                print(f"Reported {len(self.packages)} package(s)")
                self.logger.info("Reported %d package(s)", len(self.packages))
            except Exception as msg:
                print(f"Failed to send report: {msg}")
                self.logger.error("Failed to send report", exc_info=True)


if __name__ == "__main__":
    reporter = NpmReportMalware()
    reporter.main()