{"id":241,"date":"2026-04-06T22:32:16","date_gmt":"2026-04-06T14:32:16","guid":{"rendered":"http:\/\/www.millscience.cn\/?p=241"},"modified":"2026-04-06T22:32:38","modified_gmt":"2026-04-06T14:32:38","slug":"reverse3","status":"publish","type":"post","link":"https:\/\/www.millscience.cn\/index.php\/reverse3\/","title":{"rendered":"\u624b\u6495\u4e00\u7b80\u5355\u7b7e\u540d\u6821\u9a8c"},"content":{"rendered":"\n

\u57fa\u4e8e\u4e0a\u6b21\u53d1\u7684\u5e16\u5b50\uff08\u4f20\u9001\u95e8<\/a>\uff09\uff0cwakeup\u8bfe\u7a0b\u8868\u7ed5\u8fc7frida\u68c0\u6d4b\u540e\u7ee7\u7eed\u5206\u6790\uff0c\u60f3\u5c1d\u8bd5\u6293\u5305\uff0c\u4f46\u662f\u53d1\u9001\u9a8c\u8bc1\u7801\u5931\u8d25\u3002\u6392\u9664\u6211\u4eec\u4fee\u6539so\u7684\u5f71\u54cd\uff0c\u7528\u539f\u5305\u91cd\u7b7e\u540d\uff0c\u53d1\u73b0\u4e5f\u53d1\u9001\u4e0d\u4e86\u9a8c\u8bc1\u7801\uff0c\u53ef\u4ee5\u786e\u5b9a\u662f\u7b7e\u540d\u6821\u9a8c\u4e86\u3002
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\u8d77\u521d\u6211\u89c9\u5f97\u884c\u4e0d\u901a\uff0c\u4e0d\u8fc7\u53d1\u73b0\u7b7e\u540d\u6821\u9a8c\u662f\u5728frida\u6821\u9a8c\u524d\u5b8c\u6210\u7684\uff0c\u6240\u4ee5\u4f9d\u7136\u53ef\u4ee5hook\u5230\u5173\u952e\u4fe1\u606f\u3002
\u4e0b\u8f7d\u94fe\u63a5\uff1a\u5305\u542b\u8fc7frida\u68c0\u6d4b\u7248\uff0cjs\u811a\u672c\uff0c\u4e00\u952e\u53bb\u7b7e+\u8fc7frida\u68c0\u6d4b\u7248\uff0c\u539f\u5305  \u70b9\u8fd9\u91cc<\/a><\/p>\n\n\n\n

1.\u5b9a\u4f4d\u8fdb\u5165so\u5c42\u5206\u6790<\/strong>
\u76f4\u63a5\u53bbjadx\u641c\u7d22packageinfo\uff0csignature\u7b49\u7b49\u5b57\u7b26\u4e32\u592a\u6162\uff0c\u641c\u7d22\u7ed3\u679c\u51fa\u6765\u7684\u5c11\u7684\u51e0\u5341\u591a\u7684\u51e0\u767e\u4e0a\u5343\u3002\u6240\u4ee5\u9009\u62e9hook android.app.ApplicationPackageManager\u518d\u6253\u5370\u5806\u6808\u5c31\u80fd\u8f93\u51fa\u8c03\u7528\u7b7e\u540d\u7684\u5730\u65b9\u3002\u67e5\u770b\u5806\u6808\uff0c\u53d1\u73b0\u8c03\u7528\u6765\u81eanativeSetToken\u65b9\u6cd5<\/p>\n\n\n\n

\"\"\/<\/div><\/figure>\n\n\n\n

\u8fdb\u5165jadx\u627e\u5230\u65b9\u6cd5\uff0c\u4f60\u4f1a\u53d1\u73b0\u8fd9\u91cc\u6ca1\u544a\u8bc9\u4f60\uff0c\u8fd9\u4e2a\u65b9\u6cd5\u4ece\u54ea\u4e2aso\u52a0\u8f7d\u6765\u7684<\/p>\n\n\n\n

\"\"\/<\/div><\/figure>\n\n\n\n

\u5b9a\u4f4d\u65b9\u6cd5\u4e5f\u5f88\u7b80\u5355\uff0c\u76f4\u63a5hook registernatives \u5c31\u80fd\u5f97\u51fa\u6240\u6709\u52a8\u6001\u6ce8\u518c\u65b9\u6cd5\u7684\u4fe1\u606f\uff0c\u4e3a\u4ec0\u4e48\uff1f\u5b83\u91cc\u9762\u6709\u4e00\u4e2a\u7ed3\u6784\u4f53\u6570\u7ec4\uff0c\u5305\u542b\u7740\u6240\u6709\u52a8\u6001\u6ce8\u518c\u51fd\u6570\uff0c\u6bcf\u4e00\u4e2ajava\u5c42\u7684\u52a8\u6001\u6ce8\u518c\u51fd\u6570\uff0c\u5728      \u8fd9\u91cc\u90fd\u6709\u7740\u4e00\u4e00\u5bf9\u5e94\u7684so\u51fd\u6570\uff0c\u8fd9\u6837\u5c31\u5efa\u7acb\u8d77\u4e86\u4e00\u5f20\u6620\u5c04\u8868\uff0c\u6211\u4eechook\u5f97\u5230\u6620\u5c04\u8868\u4fe1\u606f\u5c31\u80fd\u627e\u51fa\u5bf9\u5e94\u7684so\u51fd\u6570\u5728\u54ea
    typedef struct {
    const char* name;      \/\/ Java \u65b9\u6cd5\u7684\u540d\u5b57\uff0c\u4f8b\u5982 “nativeMethod”
    const char* signature; \/\/ Java \u65b9\u6cd5\u7684\u7b7e\u540d\uff0c\u4f8b\u5982 “()V” \u6216 “(Ljava\/lang\/String;)I”
    void*       fnPtr;     \/\/ \u6307\u5411\u5bf9\u5e94\u7684 C\/C++ \u51fd\u6570\u7684\u6307\u9488
     } JNINativeMethod;
     \u627e\u5230\u4e86\uff0c\u4f4d\u4e8e libbaseutil.so\uff0c\u5730\u57400x128c<\/p>\n\n\n\n

\"\"\/<\/div><\/figure>\n\n\n\n

\u8fdb\u5165\u51fd\u6570\uff0c\u53cd\u7f16\u8bd1\u5f97\u5230c\u4ee3\u7801\u3002\u53ef\u4ee5\u770b\u523063\u884c\u4f7f\u7528\u4e86\u7b7e\u540d\uff0c\u53d6\u4e86md5\u503c\uff0c\u4f46\u662f\u7b7e\u540d\u662f\u5728\u54ea\u4e2a\u65b9\u6cd5\u8fd4\u56de\u7684\u5462\uff1f\u5f80\u4e0a\u67e5\u770b\uff0c\u53d1\u73b0\u5927\u591a\u4e3ajni\u51fd\u6570\u548cc\u5e93\u51fd\u6570\uff0c\u53ea\u6709\u5f00\u5934\u768429\u884cinit\u65b9\u6cd5\u6700\u53ef\u7591<\/p>\n\n\n\n

\"\"\/<\/div><\/figure>\n\n\n\n

\u8fdb\u5165init\uff0c\u53d1\u73b0\u6211\u4eec\u627e\u7684\u7b7e\u540d\u6821\u9a8c\u5c31\u5728\u91cc\u9762\uff0c\u901a\u8fc7getAndroidSignatures(env, thiz, context)\u65b9\u6cd5\u53d6\u7b7e\u540d\uff0c\u70b9\u51fb\u67e5\u770b\u65b9\u6cd5\uff0c\u6b63\u5728\u4f7f\u7528jni\u51fd\u6570\u6765\u83b7\u53d6\u7b7e\u540d\u3002\u6211\u4eec\u53ea\u8981\u5b89\u88c5\u539f\u5305\uff0chook\u51fa    \u8fd4\u56de\u503c\u5c31\u80fd\u5f97\u51fa\u6b63\u786e\u7b7e\u540d\u3002<\/p>\n\n\n\n

\"\"\/<\/div><\/figure>\n\n\n\n
\"\"\/<\/div><\/figure>\n\n\n\n

\u5176\u5b9e\u8fd8\u6ca1\u5b8c\uff0c\u56de\u5230nativeSetToken\u3002\u4ed4\u7ec6\u770b\uff0c\u5728\u83b7\u53d6\u6b63\u786e\u7b7e\u540d(v19)\u540e\uff0c\u540e\u976264\u884c\u8fd8\u6709\u4e00\u4e2aif \u8fdb\u884c\u6821\u9a8c\uff0c\u5982\u679c\u5931\u8d25\uff0c\u8fd8\u662f\u4f1a\u8df3\u8f6c\u5230\u5931\u8d25\u5206\u652f\uff08LABEL_6\uff09\u3002\u901a\u8fc7hook\uff0c\u53d1\u73b0\u8fd8\u6709\u5176\u5b83\u65b9\u6cd5\u8c03\u7528strcmp\uff0c\u6240\u4ee5\u4e0d\u80fd\u76f4\u63a5\u5c06\u8fd9\u4e2a\u65b9\u6cd5\u8fd4\u56de0\uff0c\u5982\u4f55\u786e\u5b9a\u662f\u6211\u4eec\u8fd9\u4e2a\u7b7e\u540d\u7684\u6bd4\u8f83\uff1f\u5f88\u7b80\u5355\uff0chook crymd5\uff0c\u5f53\u4f20\u5165\u7684\u53c2\u6570\u662f\u6211\u4eec\u8fd4\u56de\u7684\u7b7e\u540d\u65f6\uff0c\u7ed3\u679cv19\u5373\u4e3a\u6b63\u786emd5\u503c\u3002\u518dhook strcmp\uff0c\u5f53\u4f20\u5165\u53c2\u6570\u6709\u6b63\u786e\u7684md5\u503c\u65f6\uff0c\u8fd4\u56de0\u5373\u53ef\u7ed5\u8fc7<\/p>\n\n\n\n

\"\"\/<\/div><\/figure>\n\n\n\n


<\/strong>
2.\u5b89\u88c5\u8fc7frida\u68c0\u6d4b\u7248\u5c1d\u8bd5\uff0c\u8fdb\u5165java\u5c42\u5206\u6790<\/strong>
\u73b0\u5728\uff0c\u6211\u4eec\u5f97\u5230\u4e86\u6b63\u786e\u7684\u7b7e\u540d\uff0c\u7ed5\u8fc7\u4e86strcmp\u7684\u6bd4\u8f83\uff0c\u7f16\u5199js\u811a\u672c\uff0c\u5b89\u88c5\u8fc7frida\u7248\u672c\u8fdb\u884c\u6d4b\u8bd5\u3002\u5931\u8d25\u4e86\uff0c\u9a8c\u8bc1\u7801\u53d1\u4e0d\u51fa\u53bb\u3002
\u591a\u6b21\u5c1d\u8bd5\uff0c\u53d1\u73b0\u7b7e\u540d\u662f\u66ff\u6362\u6210\u529f\u4e86\uff0c\u4f46\u662fstrcmp\u6ca1\u53cd\u5e94\uff0c\u5b83\u5e94\u8be5\u8981\u8f93\u51faStrcmp replace successed \u624d\u5bf9\uff0c\u65e5\u5fd7\u4e5f\u53ef\u4ee5\u770b\u51fa\uff0c\u627e\u5230\u4e86strcmp\u7684\u5730\u5740<\/p>\n\n\n\n

\"\"\/<\/div><\/figure>\n\n\n\n

\u6211\u6000\u7591\u662f\u8fc7frida\u68c0\u6d4b\u7248\u6ca1\u6709\u8c03\u7528nativeSetToken\u65b9\u6cd5\uff0c\u8fdb\u884cjava\u5c42hook nativeSetToken\uff0c\u591a\u6b21\u5c1d\u8bd5\u53d1\u73b0\u6ca1\u8f93\u51fa<\/p>\n\n\n\n

\"\"\/<\/div><\/figure>\n\n\n\n

\u90a3\u8fc7frida\u68c0\u6d4b\u7248\u662f\u53bb\u54ea\u627e\u7684\u7b7e\u540d\uff1f\u518dhook\u4e86\u4e00\u4e0bPackageManager\uff0c\u53d1\u73b0\u8fc7frida\u68c0\u6d4b\u7248\uff0c\u8c03\u7528\u7b7e\u540d\u7684\u65b9\u6cd5\u662fnativeInitBaseUtil\uff0c\u548cnativeSetToken\u65b9\u6cd5\u6765\u81ea\u4e00\u4e2a\u7c7b\uff08\u56fe2\uff09\u3002
\u90a3\u4e48\u80af\u5b9a\u662f\u5b83\u4eec\u7684\u4e0a\u5c42\u8c03\u7528\u51b3\u5b9a\u7684\uff0c\u67e5\u770b\u4e0a\u5c42\u8c03\u7528\u65b9\u6cd5\uff0c\u90fd\u6765\u81ea\u540c\u4e00\u4e2a\u53eb\u5927\u5199o\u5c0f\u5199o\u8fd8\u67090\u7684\u6df7\u6dc6\u65b9\u6cd5\u3002nativeInitBaseUtil\u662f\u7b7e\u540d\u751f\u6210\u5668\uff0c\u5f53OooO0O02\u548cOooO0O03\u90fd\u4e3a\u7a7a\u65f6\u5f00\u59cb\u7b7e\u540d\uff0c\u7b7e\u540d\u540e\u5b58\u5165\u672c\u5730\u3002nativeSetToken\u662f\u7b7e\u540d\u6821\u9a8c\u5668\uff0c\u5f53OooO0O02\u6216OooO0O03\u6709\u503c\u65f6\u8fdb\u884c\u6821\u9a8c\u3002<\/p>\n\n\n\n

\"\"\/<\/div><\/figure>\n\n\n\n

\u4e3a\u4ec0\u4e48\u5931\u8d25\uff1f\u6211\u4eec\u76ee\u524d\u5b89\u88c5\u7684\u662f\u8fc7frida\u68c0\u6d4b\u7248\u672c\uff0c\u4e0d\u662f\u539f\u7248\u7b7e\u540d\uff0c\u6253\u5f00\u65f6\u8c03\u7528nativeInitBaseUtil\u751f\u6210\u7b7e\u540d\uff0c\u4f46\u662f\u751f\u6210\u4e0d\u4e86\u6709\u6548\u7b7e\u540d\uff0c\u751f\u6210\u4e0d\u4e86\u610f\u5473\u7740\u6839\u672c\u4e0d\u4f1a\u8c03\u7528nativeSetToken\u6765\u9a8c\u8bc1\uff0c\u6240\u4ee5\u9a8c\u8bc1\u7801\u53d1\u9001\u5931\u8d25\u3002
\u5f71\u54cd\u8def\u5f84\u7684\u5173\u952e\u662fOooO0O02\u548cOooO0O03\u7684\u503c\uff0chook if\u91cc\u9762\u7684\u5224\u65ad\uff0c\u53d1\u73b0\u539f\u5305\u548c\u8fc7frida\u68c0\u6d4b\u7248\uff0c\u8fd4\u56de\u503c\u90fd\u4e3atrue\uff0c\u6240\u4ee5\u4e0d\u53ef\u80fd\u8d70else\u91cc\u9762\u7684\u4ee3\u7801
\u90a3\u4e48\u76ee\u6807\u660e\u663e\uff0c\u5b89\u88c5\u539f\u5305\uff0chook\u8fd9\u4e2a\u65b9\u6cd5  OooOO0(LibPreference.KEY_ANTISPAM_SIGN_B)\uff0c\u53ef\u4ee5\u5f97\u51fa\u6b63\u786e\u7684signA\u548csignB\u5b57\u7b26\u4e32\uff0c\u8fdb\u884chook\u66ff\u6362\u5373\u53ef\u3002<\/p>\n\n\n\n

\"\"\/<\/div><\/figure>\n\n\n\n


<\/strong>
3.\u6574\u5408js\u811a\u672c\uff0c\u7528\u8fc7frida\u68c0\u6d4b\u7248\u8fdb\u884c\u6d4b\u8bd5<\/strong>
\u8fd9\u91cc\u5199\u597d\u4e86js\u811a\u672c\uff0c\u653e\u5230\u4e86\u4e0a\u9762\u7684\u94fe\u63a5\u4e2d\u3002\u53d1\u9001\u9a8c\u8bc1\u7801\u6210\u529f<\/p>\n\n\n\n

\"\"\/<\/div><\/figure>\n","protected":false},"excerpt":{"rendered":"

\u57fa\u4e8e\u4e0a\u6b21\u53d1\u7684\u5e16\u5b50\uff08\u4f20\u9001\u95e8\uff09\uff0cwakeup\u8bfe\u7a0b\u8868\u7ed5\u8fc7frida\u68c0\u6d4b\u540e\u7ee7\u7eed\u5206\u6790\uff0c\u60f3\u5c1d\u8bd5\u6293\u5305\uff0c\u4f46\u662f\u53d1\u9001\u9a8c\u8bc1\u7801\u5931\u8d25\u3002\u6392 […]<\/p>\n","protected":false},"author":1,"featured_media":254,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[18,13],"tags":[],"class_list":["post-241","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-reverse","category-learning"],"_links":{"self":[{"href":"https:\/\/www.millscience.cn\/index.php\/wp-json\/wp\/v2\/posts\/241","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.millscience.cn\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.millscience.cn\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.millscience.cn\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.millscience.cn\/index.php\/wp-json\/wp\/v2\/comments?post=241"}],"version-history":[{"count":1,"href":"https:\/\/www.millscience.cn\/index.php\/wp-json\/wp\/v2\/posts\/241\/revisions"}],"predecessor-version":[{"id":255,"href":"https:\/\/www.millscience.cn\/index.php\/wp-json\/wp\/v2\/posts\/241\/revisions\/255"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.millscience.cn\/index.php\/wp-json\/wp\/v2\/media\/254"}],"wp:attachment":[{"href":"https:\/\/www.millscience.cn\/index.php\/wp-json\/wp\/v2\/media?parent=241"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.millscience.cn\/index.php\/wp-json\/wp\/v2\/categories?post=241"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.millscience.cn\/index.php\/wp-json\/wp\/v2\/tags?post=241"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}