diff --git a/audible-converter.py b/audible-converter.py
index 4fdc498..2b35d99 100644
--- a/audible-converter.py
+++ b/audible-converter.py
@@ -1,4 +1,5 @@
 import configparser
+from requests import get
 import os
 import json
 import sys
@@ -33,10 +34,34 @@ def getHash(filePath):
         f.close()
     return data.hex()
 
-configString = '[Settings]\n' + open('./settings.conf').read()
+# getActivationBytes returns the bytes needed to decrypt a given hash. 
+def getActivationBytes(filehash):
+    headers = {'User-Agent': 'audible-converter'}
+    response = get('https://aax.api.j-kit.me/api/v2/activation/{}'.format(filehash),
+                   headers=headers)
+    return json.loads(response.text)['activationBytes']
+
+# createConfig() creates a config file.
+def createConfig(configFilePath, filePath):
+    activationBytes = getActivationBytes(getHash(filePath))
+    f = open(configFilePath, 'w')
+    f.write('activationBytes={}'.format(activationBytes))
+    f.close()
+
+configFilePath='./settings.conf'
+audibleBookPath=sys.argv[1]
+
+# Check if config file exists and creates one if needed.
+if not os.path.exists(configFilePath):
+    print('Creating config file')
+    createConfig(configFilePath, audibleBookPath)
+    
+configString = '[Settings]\n' + open(configFilePath).read()
 configParser = configparser.RawConfigParser()
 configParser.read_string(configString)
-book = AudibleBook(sys.argv[1])
+
+    
+book = AudibleBook(audibleBookPath)
 
 for c in book.getChapters():
     start=c['start']
@@ -50,4 +75,4 @@ print(book.getTitle())
 print(configParser.get('Settings', 'activationBytes'))
 
 
-print(getHash(sys.argv[1]))
+