Android逆向之路---讓咱們試試另外一種方法看漫畫-(2)

前言

上次咱們分析到了快看漫畫的協議部分，此次咱們根據他的協議來手動寫個腳本，而後執行之後，能夠把他的漫畫自動下載到電腦上面， 而後自動拼接圖片，這樣就能夠實如今電腦上當成一個長圖來看漫畫了，沒有廣告，沒有app的一些限制，先上圖，一塊兒看當作果

本文分析基於：快看漫畫5.2.0(52000) 事先說明，這是一個系列，關於快看漫畫的系列，不過在今天寫看漫畫這個系列的時候，博主後面的工做也尚未作呢，也但願在你們的監督之下一點一點的所有完成吧。 ps:避免廣告嫌疑，如下統稱kk漫畫了。

爲何選擇這個app？ 排名靠前啊，反正就選到了， 有對別的感興趣的同窗也歡迎投稿，博主會盡本身所能，給你們帶來點好玩的。

以爲看好多地方比較忽然的，能夠先轉到上一篇，而後再來看這篇文章。 傳送門：Android逆向之路---讓咱們試試另外一種方法看漫畫-(1)

找到正確的協議

上次咱們找到了了協議的大概位置，此次咱們要針對整個請求的過程進行精準的分析。包括每一個接口的做用。 首先把log清空，而後點擊他的開始閱讀，我抓到了如下log 我以漫畫:《李泰和方小甜的平行世界》爲例子

通過個人分析，先和你們說結果： 1,4主要就是請求漫畫的接口了 3,6主要是請求了一些廣告信息 7能夠理解爲上傳一些打點數據 2主要是獲取了一些評論回覆信息 5多是和一些社交相關的，這個是我猜的

首先根據Log信息，咱們能發現這些接口的做用，固然了，博主還有另外一種辦法，咱們根據這些接口信息，依次的去找源碼

源碼分析

先分析

https://api.kkmh.com/v2/comic/22535?is_preview=0

我在源碼裏面搜v2/comic/，爲何這麼搜，由於真正有開發經驗的人是知道的，後面的通常開發的時候會寫成可變的參數， 前面的url通常也是，咱們開發的時候會有測試服務器和正式服務器，前面的是會變的， 搜索結果以下：

.method public abstract getComicDetail(JI)Lretrofit2/Call;
 .param p1    # J
 .annotation runtime Lretrofit2/http/Path;
            value = "comic_id" .end annotation .end param
 .param p3    # I
 .annotation runtime Lretrofit2/http/Query;
            value = "is_preview" .end annotation .end param
 .annotation system Ldalvik/annotation/Signature;
        value = {
            "(JI)",
            "Lretrofit2/Call",
            "<",
            "Lcom/kuaikan/comic/rest/model/API/ComicDetailResponse;",
            ">;"
        } .end annotation

 .annotation runtime Lretrofit2/http/GET;
        value = "/v2/comic/{comic_id}" .end annotation .end method
複製代碼

怎麼樣，這個看着太費勁了，我仍是手動轉成java來看

@GET("/v2/comic/{comic_id}")
@Query("is_preview")
@Path("comic_id")
public abstract Call.retrofit2 getComicDetail();
複製代碼

根據方法名字其實就已經能夠猜的能夠了，而後利用動態調試，咱們能夠在APIRestClient.smali裏面調用的地方打好斷點， (具體的動態調試方法，之前也說過，不熟悉的同窗能夠去翻我之前的文章)

 const/4 v0, 0x1

    :goto_0
    invoke-interface {v1, p1, p2, v0}, Lcom/kuaikan/comic/rest/SignInterface;->getComicDetail(JI)Lretrofit2/Call;

    move-result-object v0

    invoke-interface {v0, p4}, Lretrofit2/Call;->enqueue(Lretrofit2/Callback;)V

 .line 202
    return-void 複製代碼

而後咱們可以看出來，這個主要就是利用retrofit框架，來進行網絡請求。

開始分析協議

首先經過log，或者動態調試咱們已經拿到他請求回來的json數據了

{"code":200,"data":{"comment_view_message":"吐槽神馬的儘管來","can_view":true,"cover_image_url":"http://f2.kkmh.com/image/170310/hi585uspn.webp-w640","created_at":1467150603,"recommend":{"recommend_list":[{"male_vertical_image_url":"http://f2.kkmh.com/image/171213/rt79rf2bj.webp-w320.w","vertical_image_url":"http://f2.kkmh.com/image/171213/rt79rf2bj.webp-w320.w","recommend_tag":["奇幻","劇情"],"topic_id":544,"recommend_source":"AI推薦","title":"整容遊戲"},{"male_vertical_image_url":"http://f2.kkmh.com/image/171212/rl5z4ftks.webp-w320.w","vertical_image_url":"http://f2.kkmh.com/image/171212/rl5z4ftks.webp-w320.w","recommend_tag":["都市"],"topic_id":782,"recommend_source":"AI推薦","title":"密會"},{"male_vertical_image_url":"http://f2.kkmh.com/image/161220/7tsm5zh6g.webp-w320.w","vertical_image_url":"http://f2.kkmh.com/image/161220/7tsm5zh6g.webp-w320.w","recommend_tag":["靈異"],"topic_id":786,"recommend_source":"AI推薦","title":"百怪夜譚"}],"title":"猜你喜歡"},"is_favourite":false,"title":"第1話 愛的供養","widgets":[],"recommend_count":0,"updated_at":1489143638,"selling_kk_currency":0,"zoomable":1,"push_flag":0,"previous_comic_id":null,"share":{"award":false,"activity_id":null,"show_draw_record":false,"title":""},"customized_share":[{"description":"短篇合集，講述一場自來水污染致使人類出現的奇奇怪怪的疾病。細思極恐，高能慎入！看做者的腦洞能有多大！【受權/每週五更新 責編：拉麪】","share_platform":4,"title":"好看哭！《李泰和方小甜的平行世界》這個漫畫太優秀了！","picture":"http://f2.kkmh.com/image/170310/hi585uspn.webp-w640","url":"https://m.kuaikanmanhua.com/comics/22535"},{"description":"短篇合集，講述一場自來水污染致使人類出現的奇奇怪怪的疾病。細思極恐，高能慎入！看做者的腦洞能有多大！【受權/每週五更新 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複製代碼

以上的這些是完整的json數據，咱們固然只說重點了。 加載機制： 關於kk漫畫的加載機制，假如你如今在看第2章的漫畫，當你看到一半多的時候，他就會請求這個接口，提早把第3章漫畫的圖片的url地址都拿下來。 依此類推。 咱們須要關注的是，他如何找到下一個漫畫的id，而後又如何判斷下一個漫畫的標題等等。

咱們能夠經過在程序裏打斷點，動態調試，或者看靜態源碼，或者Log信息，最終發現返回的數據以下， 關於重點的一些信息，我作了標記

製做咱們本身的腳本的思路

思路：咱們首先請求第一章的id,咱們如今的id是22535，根據剛剛的Log分析可知。 而後咱們請求回來以後，把images裏面的圖片都保存到指定的文件夾，準備合併。 而後請求下一章節，繼續，直到全部漫畫都下載到本地。 合併每一個文件夾裏面的圖片，最後這些長圖就是咱們想看的漫畫了。

我用的python寫的這個腳本，由於我的平時都是用java，有些地方寫的很差，也歡迎你們指正

個人腳本

github地址 運行環境： python3.6+ Pillow庫， 具體的能夠查看ReadME，也能夠聯繫本人

運行方法： python .\app.py ${id}

python .\app.py 22535
複製代碼

22535只是一個章節的id，

我就以《漫畫A做爲例子》 而後腳本就會自動的在當前文件夾下面生成兩個文件夾 漫畫A和漫畫A-result

漫畫A-result裏面就是拼接好的漫畫了 漫畫A-是分批下載的一些臨時文件

具體如圖：

前面的就是咱們下載的一些臨時文件 後一張圖就是咱們作好的了

聲明

本文只作技術研究，不作商用，若有同窗作商用，惡意攻擊服務器，等非法行爲，本人概不負責

告一段落

好了好了，其實說到了這裏，今天就說到這裏吧，此次把一整本書的內容都提取出來了。 能夠開開心心的在本地看漫畫了。

我但願呢，本身寫博客，可以認認真真的寫出一點東西分享給你們，而不是網上抄來抄去。但願能作一個踏踏實實作技術的人吧，不敢求太多，能給你們帶來點好玩的就挺好。

寫在最後

有什麼問題歡迎給博主指出。 包括python，程序分析方面的問題，等。

成品就不上傳了，但願你們都能跑

突然想到id獲取的問題，其實有幾個思路，

• sd卡的根目錄建立/KuaiKan文件夾，而後裏面建立了一個空的kkmh_debug文件。使kk漫畫處於debug模式下，本身抓Log
• 博主能夠去對app從新打包，而後加上一些我的的代碼，二次打包發佈出來
• 寫個xposed插件供你們使用

具體的能夠下回說，也能夠你們本身來發揮想象力啦，有什麼問題歡迎聯繫我

關於我

我的網站：MartinHan的小站

博客：hanhan12312的專欄

知乎：MartinHan01