[PYTHON] I made a Twitter bot that mutters Pokemon caught by #PokemonGO

preface

Pokemon GO has finally launched in Japan: tada:

Overseas [Reverse engineering] pokemongo-android-re, [Kneading the internal API] pokemongo-map, Seems to be playing

Perhaps because of that, GitHub has a repository related to Pokemon GO.

... I have no choice but to play around with it!

Alright ** Make a Twitter bot that mutters Pokemon caught in Pokemon GO: exclamation :: exclamation: **

I made it with my thoughts

** Please try at your own risk **

3846masa/Tweet-PokemonGO-Journal

I'll put the code I wrote on GitHub

https://github.com/3846masa/Tweet-PokemonGO-Journal

When you move it, it looks like this

https://twitter.com/EBAGmasa_pokego

tejado/pgoapi

There were various library-like things that could hit the API, Somehow I chose [tejado / pgoapi]

Even Dockerfile is prepared, so you can play easily

policy

When you catch a Pokemon, it will be recorded in the Bouken Note (English name: Journal). In other words, it seems that you only need to get the data of the Boken notebook **

Boken notebook

Unfortunately there was no Journal example in tejado / pgoapi

When I searched for a function, I found [pgoapi.py # L107-L127].

def __getattr__(self, func):
    def function(**kwargs):
    
        if not self._req_method_list:
            self.log.info('Create new request...')
    
        name = func.upper()
        if kwargs:
            self._req_method_list.append( { RequestType.Value(name): kwargs } )
            self.log.info("Adding '%s' to RPC request including arguments", name)
            self.log.debug("Arguments of '%s': \n\r%s", name, kwargs)
        else:
            self._req_method_list.append( RequestType.Value(name) )
            self.log.info("Adding '%s' to RPC request", name)

        return self

    if func.upper() in RequestType.keys():
        return function
    else:
        raise AttributeError

If you follow RequestType.Value, You will reach [AeonLucid / POGOProtos --RequestType.proto]

Pokemon GO communication seems to use Protocol Buffers

Let's capture a packet to see what kind of data is actually flowing

Packet capture

For Android packet capture, refer to [here] android-packet

When I captured it, it looked like this

Looking at it somehow, I'm curious about the number 801.

If you search by [AeonLucid / POGOProtos --RequestType.proto], It seems to be SFIDA_ACTION_LOG

If you compare it with the code of tejado / pgoapi, I think I can get something with ʻapi.sfida_action_log () `

(By the way, POGOProtos in tejado / pgoapi at the moment is old, so let's replace it.)

api.sfida_action_log()

The execution result looks like this

{
  'api_url': ...,
  'auth_ticket': { ... },
  'request_id': ...,
  'responses': {
    'SFIDA_ACTION_LOG': {
      'log_entries': [{
        'catch_pokemon': {
          'combat_points': 156,
          'pokemon_id': 114,
          'result': 1
        },
        'timestamp_ms': 1469169999498
      }, {
        'fort_search': {
          'items': [{
            'count': 3,
            'item_id': 1
          }],
          'result': 1
        },
        'timestamp_ms': 1469233607913
      }],
      'result': 1
    }
  },
  'status_code': 2
}

Probably fort_search is the pocket stop information, catch_pokemon is probably the captured Pokemon information

All you have to do is make a Twitter bot with Zackri: muscle:

in conclusion

These private APIs have a strong impression of tampering with the game, I feel like I can do something interesting in the area of logging.

Of course, ** Don't put a load on the server: no_entry_sign: But ** Isn't it better to just play around with it?