diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..a424fdc
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
+*.pyc
+*.slack.com/*
\ No newline at end of file
diff --git a/README.md b/README.md
index bd21c59..6718da1 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,13 @@
 # slackcrawl
 Crawler to download all your files on slack, for backup purpose
+
+    usage: python slackcrawl.py [-h] [-d DOMAIN] [-e EMAIL] [-p PASSWORD]
+    
+    optional arguments:
+      -h, --help            show this help message and exit
+      -d DOMAIN, --domain DOMAIN
+                            Your slack subdomain, http://[MY_DOMAIN].slack.com/
+      -e EMAIL, --email EMAIL
+                            Your slack email
+      -p PASSWORD, --password PASSWORD
+                            Your slack password
\ No newline at end of file
diff --git a/slackcrawl.py b/slackcrawl.py
new file mode 100644
index 0000000..81bddc2
--- /dev/null
+++ b/slackcrawl.py
@@ -0,0 +1,129 @@
+# -*- coding: utf-8 -*-
+import getpass
+import os
+import argparse
+from bs4 import BeautifulSoup
+import requests
+import json
+import re
+
+
+class SlackSession:
+    def __init__(self, domain):
+        print "[+] Creating session"
+        self.session = requests.Session()
+        self.session.headers.update({
+            'User-Agent': 'Mozilla/5.0 (Windows NT 6.1; WOW64; rv:38.0) Gecko/20100101 Firefox/38.0'
+        })
+        self.domain = "https://" + domain + ".slack.com/"
+        self.dir = domain + ".slack.com"
+        if not os.path.exists(self.dir):
+            os.makedirs(self.dir)
+        self.is_authed = False
+
+    def auth(self, email, password):
+        print "[+] Authenticating ..."
+        login_soup = BeautifulSoup(self.session.get(self.domain).content)
+        login_data = {}
+        for form_input in login_soup.find("form", {"id": "signin_form"}).find_all("input"):
+            login_data[form_input.get('name')] = form_input.get('value')
+        login_data['email'] = email
+        login_data['password'] = password
+        if "You need to sign in to see this page" in self.session.post(self.domain, login_data).content:
+            self.is_authed = False
+        else:
+            self.is_authed = True
+        print "    ->" + ("authed" if self.is_authed else "error authenticating ...")
+        return self.is_authed
+
+
+class SlackFilesCrawler:
+    def __init__(self, slack_session):
+        self.slack_session = slack_session
+        self.paginated = False
+        self.page_count = -1
+
+    def get_file_page(self, page=1):
+        page_html = self.slack_session.session.get(self.slack_session.domain+"files?page=" + str(page)).content
+        if not self.paginated:
+            print "[+] Files pagination not performed yet ..." + str(page)
+            page_soup = BeautifulSoup(page_html)
+            for a in page_soup.find("div", {"class": "pagination"}).find_all('a'):
+                if a.get_text() is not None and a.get_text().isdigit() and int(a.get_text()) > self.page_count:
+                    self.page_count = int(a.get_text())
+            print "   -> got " + str(self.page_count) + " pages"
+        print "[+] Retrieving files on page #" + str(page)
+        json_line = ""
+        for line in page_html.split("\n"):
+            if "boot_data.files" in line:
+                json_line = line
+        json_line = json_line.split("JSON.parse('")[1]
+        json_line = json_line.replace("');", "")
+        json_line = re.sub(r'\\([^\\])', r'\1', json_line)
+        json_line = json_line.replace("\\\\", "\\")
+        page_data = json.loads(json_line)
+        return page_data
+
+    def get_all_files(self):
+        print "[+] Retrieving all files"
+        files = self.get_file_page(1)
+        for i in range(2, self.page_count+1):
+            files += self.get_file_page(i)
+        return files
+
+
+class SlackFileUtil:
+    def __init__(self, slack_session):
+        self.slack_session = slack_session
+
+    def download(self, slack_file):
+        print "[+] Downloading " + (slack_file['name'] if 'name' in slack_file else "unnamed file")
+        if not os.path.exists(self.slack_session.dir + "/files"):
+            os.makedirs(self.slack_session.dir + "/files")
+        try:
+            local_filename = self.slack_session.dir + "/files/" + str(slack_file['created']) + "_" + slack_file['name']
+            r = self.slack_session.session.get(slack_file['url_private_download'], stream=True)
+            with open(local_filename, 'wb') as f:
+                for chunk in r.iter_content(chunk_size=1024):
+                    if chunk:
+                        f.write(chunk)
+                        f.flush()
+            print "   -> Done ... (" + local_filename + ")"
+        except KeyError:
+            print "   -> Error with " + slack_file['name'] + ": not hosted in slack"
+        except:
+            print "   -> Error... File info :"
+            print slack_file
+            print "   -> Stacktrace"
+            import traceback
+            print(traceback.format_exc())
+            local_filename = ""
+        return local_filename
+
+
+def main():
+    parser = argparse.ArgumentParser()
+    parser.add_argument("-d", "--domain", help="Your slack subdomain, http://[MY_DOMAIN].slack.com/")
+    parser.add_argument("-e", "--email", help="Your slack email")
+    parser.add_argument("-p", "--password", help="Your slack password")
+    args = parser.parse_args()
+    domain = args.domain
+    email = args.email
+    password = args.password
+    if password is None:
+        password = getpass.getpass("Password :")
+
+    slack_session = SlackSession(domain)
+    if not slack_session.auth(email, password):
+        print "[+] Error, bad authentication"
+        return
+
+    slack_files_crawler = SlackFilesCrawler(slack_session)
+    slack_files = slack_files_crawler.get_file_page(1)
+
+    file_util = SlackFileUtil(slack_session)
+    for slack_file in slack_files:
+        file_util.download(slack_file)
+
+if __name__ == '__main__':
+    main()