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スマホゲームの通信内容 どんな内容があるのか 確認してみたって話

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NEST!! vol.3 学生エンジニアLT大会 in 大阪 (https://student-lt.connpass.com/event/94631/)で発表したスライドです。

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スマホゲームの通信内容 どんな内容があるのか 確認してみたって話

  1. 1. スマホゲームの通信内容 どんな内容があるのか 確認してみたって話 stmkza(ストーム)
  2. 2. みなさん、 スマホゲームの通信について 考えたことってありますか?
  3. 3. ゲームの通信を見て何をするか •チートツールを作る(ダメ、ゼッタイ) •アセットを抜き出す(やめた方がいいけど) •怪しいアプリが個人情報とか送信してないか 確認する •ゲーム画面よりも見やすいビュアーを作る
  4. 4. 正直、ゲームアプリのUIって 使いにくいものが多い ゲーム画面よりも見やすいビュアーを作りたい
  5. 5. ちなみに、海外勢は ゲームの版権絵とか音声データ欲しくて 解析やってるらしいです 実際に聞いたんだから間違いない
  6. 6. どの手順で解析するのか • プロキシ使います • TLSで暗号化されてるなら MITM 使って暗号化解除します • 端末に証明書のインストールを忘れずに。 • ファイルの解析はそれでダメだったらします。 • ファイルの解析はAndroidの方がバイナリ的に楽です
  7. 7. ゲームL の場合
  8. 8. なんとライブ結果が見れる { "module": "live", "event_id": 126, "score_smile": 0, "score_cute": 129661, "score_cool": 0, "max_combo": 452, "miss_cnt": 0, "bad_cnt": 0, "good_cnt": 0, "great_cnt": 42, "perfect_cnt": 410, "commandNum": "4996D8FC-C952-40A6-8C39-3816742653AB.1532736596.85", "love_cnt": 121, "mgd": 1, "event_point": 27, "live_difficulty_id": 2018, "timeStamp": 1532736596, "precise_score_log": {}, "action": "reward" } 注:順番とかは見やすいように入れ替えました
  9. 9. ゲーム画面との対応 { "score_smile": 0, "score_cute": 129661, "score_cool": 0, "max_combo": 452, "miss_cnt": 0, "bad_cnt": 0, "good_cnt": 0, "great_cnt": 42, "perfect_cnt": 410, } ]
  10. 10. 去年春までは HTTPで通信していたので スコアビュアーとかあったけど、 HTTPS導入で使えなくなりました
  11. 11. 次回予告(いつか発表する) スコアビュアーを作ります
  12. 12. (本当はこのスライドで それを書くつもりでしたが、 準備をしてませんでした。。。。 )
  13. 13. END 色々と微妙なところで終わらせてしまい申し訳ありません

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