[POC] Extract encrypted image urls from Kissmanga website, using Node.JS VM binding from python

KissmangaPOC.py

import sys
import cfscrape
from bs4 import BeautifulSoup as BS
import argparse
from node_vm2 import VM
import re

BASE_URL = 'https://kissmanga.com'
args = None
scraper = cfscrape.create_scraper(delay=10)
jsEng = None

def extractImageList(page):
    """ Extract list of image from page soup """
    imgurls = re.compile('(?<=wrapKA\(\").*(?=\"\))').findall(page)
    return list(map(lambda s: jsEng.call('wrapKA',s), imgurls))

def initJsEngineAndExtractUrls(url):
    """ Initialize js Engine with cipher key and extract all image urls """
    global jsEng
    req = scraper.request('get', url=url)
    req.raise_for_status()
    page = BS(req.text, 'html5lib')
    jslist = page.find_all('script')
    try:
        homejs = next(entry for entry in jslist if 'chko' in entry.decode_contents()).decode_contents().strip()
        cajs = scraper.request('get','https://kissmanga.com/Scripts/ca.js').text
        lojs = scraper.request('get','https://kissmanga.com/Scripts/lo.js').text
        jsEng = VM(code="\n".join([cajs, lojs, homejs])).create()
        imglst = extractImageList(req.text)
        for entry in imglst : print(entry)
    except StopIteration as ex:
        print("Can't extract cipher key")
        sys.exit(1)

def main():
    req = scraper.request(method='get', url=args.url)
    req.raise_for_status()
    page = BS(req.text, 'html5lib')
    chapters = page.find('table', {'class': 'listing'}).find_all('a')
    chapters.reverse()
    for num, entry in enumerate(chapters):
        #TODO: Prettify with column output
        print(f'{num:03d}. {entry.text.strip()}')
    startindex = int(input('Start Index: '))
    initJsEngineAndExtractUrls(f"{BASE_URL}/{chapters[startindex]['href']}")

if __name__ == '__main__':
    parser = argparse.ArgumentParser(description='Kissmanga scraper')
    parser.add_argument('url', help='Base url to scrape')
    args = parser.parse_args()
    scraper.request('get', BASE_URL)
    main()