Awesome

Token Reverser

Words list generator to crack security tokens.

Installation

$ git clone https://github.com/dariusztytko/token-reverser.git

Example use case

1. You are testing reset password function

2. Reset password token was sent to your email box (e.g. 582431d4c7b57cb4a3570041ffeb7e10)

3. You suppose, it is a md5 hash of the data you provided on registration

4. On registration you entered the following data:

   • First name: Foo
   • Last name: Bar
   • Email: foo.bar@example.com
   • Birth date: 1985-05-23
   • Phone: 202-555-0185
   • Address: 3634 Forest Drive

5. In addition, you have an access to the following extra data:

   • Application user ID: 74824
   • Date of the reset password HTTP request ("Date" response header): Tue, 10 Mar 2020 17:12:59 GMT

6. Use Token Reverser to generate words list from the known data:

   python3 token-reverser.py --date "Tue, 10 Mar 2020 17:12:59 GMT" Foo Bar foo.bar@example.com 1985-05-23 202-555-0185 "3634 Forest Drive" 74824 > words
   

7. Use hashcat to crack reset password token:

   hashcat64.exe -m 0 582431d4c7b57cb4a3570041ffeb7e10 words
   hashcat (v5.1.0) starting...
   [...]
   
   582431d4c7b57cb4a3570041ffeb7e10:74824!Foo!Bar!foo.bar@example.com!1583860379
   
   Session..........: hashcat
   Status...........: Cracked
   Hash.Type........: MD5
   Hash.Target......: 582431d4c7b57cb4a3570041ffeb7e10
   [...]
   

8. Now you know that reset password tokens are generated as follows:

   md5(user ID!first name!last name!email!current timestamp)
   

Usage

usage: token-reverser.py [-h] [-d DATE] [-o TIMESTAMP_OFFSET] [-s SEPARATORS]
                         data [data ...]

Words list generator to crack security tokens v1.2

positional arguments:
  data                  data chunks

optional arguments:
  -h, --help            show this help message and exit
  -d DATE, --date DATE  timestamp from this date will be used as an additional
                        data chunk, example: Tue, 10 Mar 2020 14:06:36 GMT
  -o TIMESTAMP_OFFSET, --timestamp-offset TIMESTAMP_OFFSET
                        how many previous (to timestamp from date) timestamps
                        should be used as an additional data chunks, default: 1
  -s SEPARATORS, --separators SEPARATORS
                        data chunks separators to check, default:
                        ~`!@#$%^&*()_+-={}|[]\:";'<>?,./ \t

Changes

Please see the CHANGELOG