某番茄小说web端 字体加密逆向思路

一曲离歌

在b站，看到这个案例，复刻一下，标题除了加个web端，还有个空格，其他的没改。

非原创，非原创，非原创


原视频，仙人指路（自行搜索，不挂连接）：

【js逆向案例-简单】某番茄小说字体加密逆向思路

原题思路：
1，获取web中的小说段落，Ansi转Unicode1后，前缀58开头的为加密字体。
2，从web端，获取字体woff2，拆包后，得到加密编码对应的文字图。
3，制作字典，将加密的编码，置换成对应文字，已达成解密。

原题图片：
1，加密的章节段落



2，python简易的字典cha询



3，字体拆包能看到编码




复刻操作：

选用网址：

[JavaScript] 纯文本查看 复制代码

https://fanqienovel.com/reader/7181453438667096588

加密所示：





字体文件：

[JavaScript] 纯文本查看 复制代码

https://lf6-awef.bytetos.com/obj/awesome-font/c/dc027189e0ba4cd-700.woff2
https://lf6-awef.bytetos.com/obj/awesome-font/c/dc027189e0ba4cd-500.woff2
https://lf6-awef.bytetos.com/obj/awesome-font/c/dc027189e0ba4cd.woff2

ba4cd  与  woff2之间如果有数字，标识字体粗细，数值越大，字体越粗


字体拆包：    FontCreator.exe




（下载安装，用的14版本，兼容性好，9.x版本不知道为啥，打开文件报错）




总共： 363个字符


开始偷懒：（非全文字典解密）



弄全文字典我不配，就做一小段。



由于文本编辑器或电脑不支持Unicode1，所以显示空白符，
这里是将已知明文删除，留下加密字符，拿去编码







以此去校验是否字典制作正确，选择一个非主流的字典办法


以密文的58开头编码，对应出常规明文编码，制作字典

思路如图：



调试信息如下：

[Python] 纯文本查看 复制代码

* “字典数量：” | 11
* “待解密文本” | “痛，痛！刻骨铭痛苦弥漫奕。”
* “解密后的文本_编码” | “痛，太痛了！刻骨铭心的痛苦弥漫张奕的全身上下。”
* “解密后的文本_文本” | “痛，太痛了！刻骨铭心的痛苦弥漫张奕的全身上下。”

这是代码附件：
（声明：由于写帖子时候，使用了7.5的精易模块，
  在最后检查时候，发现引用9.7以上精易模块，会出现编码的错误，附件中带一个7.5模块，
  如不放心文件安全，可以自行删除模块，到官网下载对应版本模块替换！）

    太困了，就劳烦感兴趣的自行解决这个问题吧



番茄字体.rar (898.02 KB, 下载次数: 56)

2023-7-21 20:44 上传

点击文件名下载附件
代码文件

完结撒花

发现美好

完结撒花

zhangchao123

广泛的撒法规范大噶豆腐干大范甘迪法国

kkp

最新的表:
uint16_t 番茄小说字体表_ID[] =
{
58670,58413,58678,58371,58353,58480,58359,58449,58540,58692,58712,58542,58575,58626,58691,58561,
58362,58619,58430,58531,58588,58440,58681,58631,58376,58429,58555,58498,58518,58453,58397,58356,
58435,58514,58482,58529,58515,58688,58709,58344,58656,58381,58576,58516,58463,58649,58571,58558,
58433,58517,58387,58687,58537,58541,58458,58390,58466,58386,58697,58519,58511,58634,58611,58590,
58398,58422,58657,58666,58562,58345,58510,58496,58654,58441,58493,58714,58618,58528,58620,58403,
58461,58481,58700,58708,58503,58442,58639,58506,58663,58436,58563,58391,58357,58354,58695,58372,
58696,58551,58445,58408,58599,58424,58394,58348,58426,58673,58417,58556,58603,58565,58604,58522,
58632,58622,58350,58605,58617,58401,58637,58684,58382,58464,58487,58693,58608,58392,58474,58601,
58355,58573,58499,58469,58361,58698,58489,58711,58457,58635,58492,58647,58623,58521,58609,58530,
58665,58652,58676,58456,58581,58509,58488,58363,58685,58396,58523,58471,58485,58613,58533,58589,
58527,58593,58699,58707,58414,58596,58570,58660,58364,58526,58501,58638,58404,58677,58535,58629,
58577,58606,58497,58662,58479,58532,58380,58385,58405,58644,58578,58505,58564,58412,58686,58624,
58667,58607,58616,58368,58427,58423,58633,58525,58543,58418,58597,58683,58507,58621,58703,58438,
58536,58384,58484,58539,58554,58421,58347,58569,58710,58574,58375,58645,58592,58572,58388,58370,
58399,58651,58546,58504,58419,58407,58672,58675,58538,58465,58374,58579,58402,58702,58553,58360,
58389,58560,58690,58473,58512,58653,58704,58545,58641,58475,58583,58472,58478,58664,58586,58568,
58674,58490,58476,58346,58630,58595,58502,58713,58587,58548,58351,58547,58443,58460,58636,58585,
58625,58694,58428,58640,58628,58612,58446,58468,58410,58508,58594,58483,58544,58495,58450,58643,
58486,58406,58447,58669,58415,58444,58549,58494,58409,58658,58557,58602,58559,58610,58513,58500,
58378,58680,58352,58383,58454,58671,58668,58452,58627,58400,58455,58416,58552,58614,58582,58534,
58701,58349,58491,58467,58365,58598,58425,58462,58420,58661,58615,58648,58470,58377,58520,58646,
58600,58431,58715,58524,58439,58566,58477,58642,58437,58411,58451,58395,58369,58706,58705,58379,
58567,58373,58448,58659,58434,58679,58432,58689,58591,58682
};
wchar_t 番茄小说字体表_Value[] =
L"0123456789"
L"abcdefghijklmnopqrstuvwxyz"
L"ABCDEFGHIJKLMNOPQRSTUVWXYZ"
L"的一是了我不人在他有这个上们来到时"
L"大地为子中你说生国年着就那和要她出也得里"
L"后自以会家可下而过天去能对小多然于心学么"
L"之都好看起发当没成只如事把还用第样道想作"
L"种开美总从无情己面最女但现前些所同日手又"
L"行意动方期它头经长儿回位分爱老因很给名法"
L"间斯知世什两次使身者被高已亲其进此话常与"
L"活正感见明问力理尔点文几定本公特做外孩相"
L"西果走将月十实向声车全信重三机工物气每并"
L"别真打太新比才便夫再书部水像眼等体却加电"
L"主界门利海受听表德少克代员许稜先口由死安"
L"写性马光白或住难望教命花结乐色更拉东神记"
L"处让母父应直字场平报友关放至张认接告入笑"
L"内英军候民岁往何度山觉路带万男边风解叫任"
L"金快原吃妈变通师立象数四失满战远格士音轻"
L"目条呢"
;

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马修

密文编码是如何换成明文的编码的呀