Python script to decode passwords stored by Remmina

remmina_decode_passwords.py

#!/usr/bin/env python3

import base64
from Crypto.Cipher import DES3
import os
import pprint

REMMINA_PREF_FILE = os.getenv('HOME') + '/.config/remmina/remmina.pref'
REMMINA_FOLDER = os.getenv('HOME') + '/.local/share/remmina/'

def read_secret():
    with open(REMMINA_PREF_FILE, 'rt') as pref:
        for line in pref:
            if line.startswith('secret='):
                return line[len('secret='):-1]
    sys.exit('Secret not found in file ' + REMMINA_PREF_FILE)

def create_cipher(secret):
    decoded = base64.b64decode(secret)
    return DES3.new(decoded[:24], DES3.MODE_CBC, decoded[24:])

def lookup():
    files = []
    for file in os.listdir(REMMINA_FOLDER):
        fullPath = REMMINA_FOLDER + '/' + file
        if os.path.isfile(fullPath) and file.endswith('.remmina'):
            files.append(fullPath)
    return files

def read_file(file):
    KEYS = ['name', 'username', 'password']
    entries = dict()
    with open(file, 'rt') as lines:
        for line in lines:
            for key in KEYS:
                if line.startswith(key + '='):
                    entries[key] = line[len(key + '='):-1]
    return entries

def decrypt(password, secret):
    decoded = base64.b64decode(password)
    cipher = create_cipher(secret)
    decrypted = cipher.decrypt(decoded)
    return decrypted.decode('utf-8').rstrip('\x00')


def main():
    secret = read_secret()
    print('Name;Username;Password')
    for file in lookup():
        entries = read_file(file)
        entries['password'] = decrypt(entries['password'], secret)
        print(entries['name'] + ';' + entries['username'] + ';' + entries['password'])

if __name__ == '__main__':
    main()