jnlp_jar_downloader.py

import requests
import xml.etree.ElementTree as ET
import argparse
import os

parser = argparse.ArgumentParser(description='Get jar files of an jnlp')
parser.add_argument('--jnlp', type=str, help='jnlp file')
parser.add_argument('--url', type=str, help='url of jnlp file',)
parser.add_argument('--output', type=str, help='output dir')

args = parser.parse_args()

if args.jnlp:
    jnlp = args.jnlp
    with open(jnlp) as f:
        jnlp = f.read()
elif args.url:
    jnlp = requests.get(args.url).text
    if not jnlp:
        print("[!] Error getting jnlp")
        exit(1)
else:
    print("[!] Please provide jnlp file or url")
    exit(1)


output = args.output 
if not os.path.exists(output):
    print(f"[+] Creating output dir {output}")
    os.makedirs(output)

jnlp = jnlp.replace("<jfx:javafx-runtime version=\"2.0+\" />", "") # if keep showing error just delete manually the line that isnt xml valid

xmltree = ET.ElementTree(ET.fromstring(jnlp))
root = xmltree.getroot()
codebase = root.attrib['codebase']
print('[+] Parsing jnlp')
print(f"[+] Codebase: {codebase}")

for jar in root.iter('jar'):
    jarname = jar.get('href')
    jarversion = jar.get('version')

    url_final = f"{codebase}{jarname}?version-id={jarversion}"
    print(f"Downloading {url_final}")
    r = requests.get(url_final)
    with open(f"{output}/{jarname}", "wb") as f:
        f.write(r.content)

print("[+] Done!")