{"id":996,"date":"2024-08-11T15:11:16","date_gmt":"2024-08-11T07:11:16","guid":{"rendered":"https:\/\/shangwendada.top\/?p=996"},"modified":"2024-10-30T16:22:10","modified_gmt":"2024-10-30T08:22:10","slug":"android360%e5%8a%a0%e5%9b%ba%e4%bf%9d%e5%85%8d%e8%b4%b9%e7%89%88%e5%88%86%e6%9e%90","status":"publish","type":"post","link":"https:\/\/blog.shangwendada.top\/index.php\/2024\/08\/11\/android360%e5%8a%a0%e5%9b%ba%e4%bf%9d%e5%85%8d%e8%b4%b9%e7%89%88%e5%88%86%e6%9e%90\/","title":{"rendered":"[Android]\u67d0\u52a0\u56fa\u5206\u6790"},"content":{"rendered":"

360\u52a0\u56fa\u4fdd\u514d\u8d39\u7248\u5206\u6790<\/h1>\n

\u524d\u8a00<\/h2>\n

\u5206\u6790\u4e00\u4e0b\u67d0\u52a0\u56fa\uff0c\u901a\u8fc7\u52a0\u56fa<\/p>\n


\n<\/p>\n

\u7684\u601d\u8def\u5b66\u4e60\u9006\u5411\u6280\u672f\uff0c\u9996\u5148\u5199\u4e00\u4e2aAPP\u4f7f\u7528\u8fdb\u884c\u52a0\u56fa<\/p>\n

APK\u754c\u9762\uff1a<\/p>\n

\"file\"<\/div><\/p>\n

\u7279\u5f81\u5206\u6790<\/h2>\n

\"file\"<\/div><\/p>\n

\u67d0\u52a0\u56fa\u4fdd\u7684\u7279\u5f81\u5176\u5b9e\u5c31\u662fStub\u7c7b\u548ctianyu\u5b57\u6837\u4e86\u3002<\/p>\n

\u89c2\u5bdfattachBaseContext\u7c7b\uff1a<\/p>\n

\"file\"<\/div><\/p>\n

\u503c\u5f97\u6ce8\u610f\u7684\u662fattachBaseContext\u4e0eonCreate\u7c7b\u90fd\u5c5e\u4e8eApplication\u7684\u56de\u8c03\u65b9\u6cd5\uff0c\u4f1a\u8fdb\u884c\u4e00\u4e9b\u521d\u59cb\u5316\u64cd\u4f5c\u3002<\/p>\n

\u8fd9\u91cc\u6211\u4eec\u89c2\u5bdf\u4ed6\u5728\u52a0\u8f7d\u5b57\u7b26\u4e32\u7684\u65f6\u5019\u90fd\u4f7f\u7528\u4e86a.a\u65b9\u6cd5\uff0c\u90a3\u4e48\u663e\u7136a.a\u65b9\u6cd5\u5c31\u662f\u5c31\u662f\u4e00\u4e2a\u89e3\u6df7\u6dc6\u7684\u65b9\u6cd5\u54af\uff0c\u6211\u4eec\u8fd8\u53ef\u4ee5hook\u4f4f\u770b\u4e00\u4e0b\u90fd\u505a\u4e86\u4e9b\u4ec0\u4e48<\/p>\n

let a = Java.use("com.tianyu.util.a");\na["a"].overload('java.lang.String').implementation = function (str) {\n    console.log(`a.a is called: str=${str}`);\n    let result = this["a"](str);\n    console.log(`a.a result=${result}`);\n    return result;\n};<\/code><\/pre>\n
\"file\"<\/div><\/p>\n
\u5728Stub\u6700\u5f00\u59cb\u6211\u4eec\u53ef\u4ee5\u627e\u5230\u8fd9\u4e2a\u5b57\u7b26\u4e32\uff1a<\/p>\n
private static String b = "libjiagu";
\n\u5bf9\u4ed6\u4ea4\u53c9\u5f15\u7528\u770b\u4e00\u770b<\/p>\n
\"file\"<\/div><\/p>\n
\u53ef\u4ee5\u53d1\u73b0\u52a0\u56fa\u4fdd\u4f1a\u5224\u65ad\u624b\u673a\u7684\u67b6\u6784\uff0c\u9488\u5bf9\u4e0d\u540c\u7684\u67b6\u6784\u52a0\u8f7d\u4e0d\u540c\u7684Native\u6587\u4ef6\u3002<\/p>\n
Native\u5c42\u5206\u6790<\/h2>\n
\u663e\u7136\u6211\u4eec\u53ef\u4ee5\u53d1\u73b0\u67d0\u52a0\u56fa\u662f\u901a\u8fc7Native\u5c42\u53bb\u91ca\u653eDex\u6587\u4ef6\u7684\uff0c\u56e0\u6b64\uff0c\u6211\u4eec\u4e3b\u8981\u5206\u6790\u7684\u8fd8\u662fNative\u5c42\u7684\u5185\u5bb9\u3002<\/p>\n
\"file\"<\/div><\/p>\n
\u8fd9\u91cc\u6211\u4eec\u4e3b\u8981\u5206\u6790arm64:<\/p>\n
\u58f3ELF\u5bfc\u5165\u5bfc\u51fa\u8868\u4fee\u590d\uff1a<\/h3>\n
\"file\"<\/div><\/p>\n
\u53ef\u4ee5\u53d1\u73b0\u67d0\u52a0\u56fa\u5bf9\u4e8e\u6700\u5916\u9762\u7684ELF\u505a\u4e86\u5904\u7406\uff0c\u62b9\u9664\u4e86SO\u7684\u5bfc\u51fa\u8868\uff0c\u5982\u679c\u6ca1\u6709\u5bfc\u5165\u5bfc\u51fa\u8868\u7684\u8bdd\uff0c\u8fd9\u4e2aELF\u6587\u4ef6\u662f\u5982\u4f55\u8fd0\u884c\u7684\u5462\uff0c\u90a3\u4e48\u4e0d\u96be\u53d1\u73b0\u5176\u5b9e\u52a0\u56fa\u4fdd\u5e94\u8be5\u662f\u4f7f\u7528\u4e86\u81ea\u5df1\u5b9a\u4e49\u7684\u94fe\u63a5\u5668\uff0c\u5728\u88c5\u8f7d\u5185\u5b58\u7684\u65f6\u5019\u624d\u505a\u76f8\u5e94\u7684\u94fe\u63a5\u64cd\u4f5c\u3002<\/p>\n
\u9996\u5148\u6211\u4eec\u5148hook dlopen\u6765\u67e5\u770bAPK\u52a0\u8f7d\u4e86\u54ea\u4e9bso\u6587\u4ef6\uff1a<\/p>\n
function hook_dlopne() {\n    Interceptor.attach(Module.findExportByName("libdl.so", "android_dlopen_ext"), {\n        onEnter: function (args) {\n            console.log("Load -> ", args[0].readCString());\n        }, onLeave: function () {\n\n        }\n    })\n}\n\nsetImmediate(hook_dlopne);<\/code><\/pre>\n
\u6b63\u5e38\u6765\u8bf4\uff0c\u6211\u4eec\u5982\u679cHook dlopen\u7684\u8bdd\uff0c\u5728\u5b89\u53537.0\u4e4b\u540e\u6211\u4eec\u9700\u8981hook\u7684\u503c\u5219\u4e3a"android_dlopen_ext"\uff1a<\/p>\n
\"file\"<\/div><\/p>\n
\u6211\u4eec\u53ef\u4ee5\u53d1\u73b0\u52a0\u8f7d\u4e86libjiagu_64.so\uff0c\u63a5\u4e0b\u6765\u5c31\u662f\u60f3\u529e\u6cd5\u628a\u5b83dump\u4e0b\u6765\u4e86\uff0c\u9996\u5148\u6211\u4eec\u542f\u52a8APP<\/strong>\uff0c\u4f7f\u7528frida -U -F -l Hook.js
\n\u53c2\u6570\u6ce8\u5165\u5982\u4e0b\u811a\u672c<\/p>\n
function dump_so() {\n    var soName = "libjiagu_64.so";\n    var libSo = Process.getModuleByName(soName);\n    var save_path = "\/data\/data\/com.swdd.txjgtest\/" + libSo.name + "_Dump";\n    console.log("[Base]->", libSo.base);\n    console.log("[Size]->", ptr(libSo.size));\n    var handle = new File(save_path, "wb");\n    Memory.protect(ptr(libSo.base), libSo.size, 'rwx');\n    var Buffer = libSo.base.readByteArray(libSo.size);\n    handle.write(Buffer);\n    handle.flush();\n    handle.close();\n    console.log("[DumpPath->]", save_path);\n\n}\nsetImmediate(dump_so);<\/code><\/pre>\n
\"file\"<\/div><\/p>\n
[Base]-> 0x78c1443000\n[Size]-> 0x27d000\n[DumpPath->] \/data\/data\/com.swdd.txjgtest\/libjiagu_64.so_Dump<\/code><\/pre>\n
\u8fd9\u4e09\u4e2a\u53c2\u6570\u5f88\u91cd\u8981\uff0c\u7b49\u4e0b\u4fee\u590dSO\u7684\u65f6\u5019\u9700\u8981\u4f7f\u7528\u3002<\/p>\n
SoFixer:https:\/\/github.com\/F8LEFT\/SoFixer<\/a><\/p>\n
\u63a5\u4e0b\u6765\u6211\u4eec\u9700\u8981\u4f7f\u7528SoFixer\u4fee\u590d\u6211\u4eecdump\u4e0b\u6765\u7684So\u6587\u4ef6\uff1a<\/p>\n
 .\\SoFixer-Windows-64.exe -s .\\libjiagu_64.so_Dump -o .\\libjiagu_64.so_Fix -m 0x78c1443000 -d<\/code><\/pre>\n
-m\u662f\u521a\u521a\u6211\u4eec\u811a\u672c\u8f93\u51fa\u7684\u504f\u79fb\u5730\u5740<\/p>\n
\"file\"<\/div><\/p>\n
\u58f3ELF\u5206\u6790\uff1a<\/h3>\n
\u63a5\u4e0b\u6765\u6211\u4eec\u8981\u505a\u7684\u5c31\u662f\u5206\u6790ELF\u7684\u903b\u8f91\u4e86\uff1a<\/p>\n
\"file\"<\/div><\/p>\n
\u521a\u5f00\u59cb\u62ff\u5230\u8fd9\u4e2aELF\u6211\u4eec\u8fd8\u65e0\u4ece\u4e0b\u624b\uff0c\u4f46\u662f\u6839\u636e\u52a0\u56fa\u601d\u8def\uff0c\u6211\u4eec\u53ef\u4ee5\u5148hook open\u51fd\u6570\uff0c\u67e5\u770b\u8bfb\u53d6\u4e86\u54ea\u4e9b\u6587\u4ef6\u3002<\/p>\n
function hookOpen() {\n    var openPtr = Module.getExportByName(null, 'open');\n    const open = new NativeFunction(openPtr, 'int', ['pointer', 'int']);\n    Interceptor.replace(openPtr, new NativeCallback(function (fileNamePtr, flag) {\n        var fileName = fileNamePtr.readCString();\n        if (fileName.indexOf('dex') != -1) {\n            console.log("[Open]-> ", fileName);\n        }\n        return open(fileNamePtr, flag);\n\n    }, 'int', ['pointer', 'int']))\n}\nfunction hook_dlopne() {\n\n    Interceptor.attach(Module.findExportByName("libdl.so", "android_dlopen_ext"), {\n        onEnter: function (args) {\n            var loadFileName = args[0].readCString();\n          \/\/  console.log("Load -> ", loadFileName);\n            if (loadFileName.indexOf('libjiagu') != -1) {\n                this.is_can_hook = true;\n            }\n        }, onLeave: function () {\n            if (this.is_can_hook) {\n                hookOpen();\n            }\n        }\n    })\n}\n\nsetImmediate(hook_dlopne);\n<\/code><\/pre>\n
\u5f97\u5230\u8f93\u51fa\u5982\u4e0b\uff1a<\/p>\n
\"file\"<\/div><\/p>\n
\u6211\u4eec\u53d1\u73b0\uff0c\u975e\u5e38\u5947\u602a\uff0c\u5c45\u7136\u6ca1\u6709\u6253\u5f00\u4e0e\u6211\u4eec\u7a0b\u5e8f\u76f8\u5173\u7684dex\u6587\u4ef6\uff0c\u6211\u4eec\u53d6\u6d88\u5bf9dex\u7684\u8fc7\u6ee4\uff0c\u67e5\u770b\u4e00\u4e0b\u90fd\u6253\u5f00\u4e86\u4e00\u4e9b\u4ec0\u4e48\u5185\u5bb9\u3002<\/p>\n
\"file\"<\/div><\/p>\n
\u591a\u6b21\u7684\u6253\u5f00\u4e86maps\u6587\u4ef6\uff0c\u90a3\u4e48\u6211\u4eec\u77e5\u9053\u8be5\u6587\u4ef6\u5305\u542b\u4e86\u8fdb\u7a0b\u7684\u5185\u5b58\u6620\u5c04\u4fe1\u606f\uff0c\u7a0b\u5e8f\u9891\u7e41\u8bfb\u53d6\u662f\u4e3a\u4e86\u4ec0\u4e48\u5462\uff0c\u5176\u5b9e\u731c\u6d4b\u5c31\u662f\u4e3a\u4e86\u9690\u85cf\u6253\u5f00dex\u7684\u64cd\u4f5c\uff0c\u90a3\u4e48\u6211\u4eec\u53ea\u9700\u8981\u91cd\u5b9a\u5411\u4e00\u4e0bmaps\u5c31\u53ef\u4ee5\u4e86\uff0chook open\u5c06\u6253\u5f00open\u65f6\u5982\u679c\u5b58\u5728\u626b\u63cfmaps\uff0c\u5c31\u5b9a\u5411\u5230\u81ea\u5df1\u7684fakemaps\u3002<\/p>\n
\nfunction hookOpen() {\n    var FakeMaps = "\/data\/data\/com.swdd.txjgtest\/maps";\n    var openPtr = Module.getExportByName(null, 'open');\n    const open = new NativeFunction(openPtr, 'int', ['pointer', 'int']);\n    var readPtr = Module.findExportByName("libc.so", "read");\n\n    Interceptor.replace(openPtr, new NativeCallback(function (fileNamePtr, flag) {\n        var FD = open(fileNamePtr, flag);\n        var fileName = fileNamePtr.readCString();\n\n        if (fileName.indexOf("maps") >= 0) {\n            console.warn("[Warning]->mapsRedirect Success");\n            var filename = Memory.allocUtf8String(FakeMaps);\n            return open(filename, flag);\n        }\n        if (fileName.indexOf('dex') != -1) {\n            console.log("[OpenDex]-> ", fileName);\n        }\n        return FD;\n\n    }, 'int', ['pointer', 'int']))\n}\nfunction hook_dlopne() {\n\n    Interceptor.attach(Module.findExportByName("libdl.so", "android_dlopen_ext"), {\n        onEnter: function (args) {\n            var loadFileName = args[0].readCString();\n          \/\/  console.log("Load -> ", loadFileName);\n            if (loadFileName.indexOf('libjiagu') != -1) {\n                this.is_can_hook = true;\n            }\n        }, onLeave: function () {\n            if (this.is_can_hook) {\n                hookOpen();\n            }\n        }\n    })\n}\n\nsetImmediate(hook_dlopne);<\/code><\/pre>\n
\"file\"<\/div><\/p>\n
\u90a3\u4e48\u6211\u4eec\u80fd\u591f\u53d1\u73b0\u786e\u5b9e\u4f7f\u7528\u4e86open\u53bb\u6253\u5f00classes\uff0c\u5e76\u4e14\u5b9e\u9524\u4e86\u662f\u901a\u8fc7\u5904\u7406maps\u9690\u85cf\u4e86\u5185\u5b58\u6620\u5c04\uff0c\u63a5\u4e0b\u6765\u6211\u4eec\u5c31\u53ef\u4ee5\u901a\u8fc7<\/p>\n
console.log('RegisterNatives called from:\\n' + Thread.backtrace(this.context, Backtracer.FUZZY).map(DebugSymbol.fromAddress).join('\\n') + '\\n');<\/code><\/pre>\n
\u6765\u6253\u5370\u8bfb\u53d6dex\u6587\u4ef6\u7684Native\u5730\u5740\u3002<\/p>\n
\nfunction hookOpen() {\n    var FakeMaps = "\/data\/data\/com.swdd.txjgtest\/maps";\n    var openPtr = Module.getExportByName(null, 'open');\n    const open = new NativeFunction(openPtr, 'int', ['pointer', 'int']);\n    var readPtr = Module.findExportByName("libc.so", "read");\n\n    Interceptor.replace(openPtr, new NativeCallback(function (fileNamePtr, flag) {\n        var FD = open(fileNamePtr, flag);\n        var fileName = fileNamePtr.readCString();\n\n        if (fileName.indexOf("maps") >= 0) {\n            console.warn("[Warning]->mapsRedirect Success");\n            var filename = Memory.allocUtf8String(FakeMaps);\n            return open(filename, flag);\n        }\n        if (fileName.indexOf('dex') != -1) {\n            console.info("[OpenDex]-> ", fileName);\n            console.log('RegisterNatives called from:\\n' + Thread.backtrace(this.context, Backtracer.FUZZY).map(DebugSymbol.fromAddress).join('\\n') + '\\n');\n        }\n        return FD;\n\n    }, 'int', ['pointer', 'int']))\n}\nfunction hook_dlopne() {\n\n    Interceptor.attach(Module.findExportByName("libdl.so", "android_dlopen_ext"), {\n        onEnter: function (args) {\n            var loadFileName = args[0].readCString();\n          \/\/  console.log("Load -> ", loadFileName);\n            if (loadFileName.indexOf('libjiagu') != -1) {\n                this.is_can_hook = true;\n            }\n        }, onLeave: function () {\n            if (this.is_can_hook) {\n                hookOpen();\n            }\n        }\n    })\n}\n\nsetImmediate(hook_dlopne);<\/code><\/pre>\n
\u83b7\u53d6\u5230\u7684\u8f93\u51fa\u5982\u4e0b\uff1a<\/p>\n
\"file\"<\/div><\/p>\n
\u53ef\u4ee5\u53d1\u73b0\u6bcf\u6b21\u6253\u5f00dex\u7684\u8c03\u7528\u6808\u57fa\u672c\u4e00\u81f4\uff0c\u6211\u4eec\u5728IDA\u4e2d\u67e5\u770b\u8fd9\u4e2a\u5730\u5740\u3002<\/p>\n
\"file\"<\/div><\/p>\n
\u5c45\u7136\u90fd\u672a\u8bc6\u522b\u3002<\/p>\n
\u7ffb\u4e86\u4e00\u4e0b\u8fd9\u6bb5\u6570\u636e\uff0c\u7ffb\u5230\u5934\u7684\u65f6\u5019\u53ef\u4ee5\u53d1\u73b0<\/p>\n
\"file\"<\/div><\/p>\n
\u5728\u8fd9\u4e00\u6bb5\u6709\u88ab\u5f15\u7528\uff0c\u6211\u4eec\u8ddf\u8fc7\u53bb\u770b\u4e00\u770b<\/p>\n
\"file\"<\/div><\/p>\n
\u540e\u7f00\u88ab\u52a0\u4e86.so\uff0c\u7136\u540e\u5206\u6bb5\u52a0\u8f7d\u4e86\u4e00\u4e9b\u4e1c\u897f\u3002\u8fd9\u4e2a\u65f6\u5019\u57fa\u672c\u53ef\u4ee5\u731c\u6d4b\u662f\u5728linker\u53e6\u4e00\u4e2aso\u4e86\u3002<\/p>\n
\u4e3bELF\u89e3\u5bc6<\/h3>\n
\u5728\u81ea\u5b9e\u73b0linker\u7684\u65f6\u5019\uff0c\u5b8c\u6210linker\u4e4b\u540e\u80af\u5b9a\u662f\u9700\u8981\u7528dlopen\u53bb\u52a0\u8f7d\u8fd9\u4e2aso\u7684\uff0c\u90a3\u4e48\u6211\u4eechook\u4e00\u4e0bdlopen\u9a8c\u8bc1\u4e00\u4e0b\u6211\u4eec\u7684\u731c\u60f3\u3002<\/p>\n
function hook_dlopne() {\n    Interceptor.attach(Module.findExportByName("libdl.so", "android_dlopen_ext"), {\n        onEnter: function (args) {\n            console.warn("[android_dlopen_ext] -> ", args[0].readCString());\n        }, onLeave: function () {\n\n        }\n    })\n}\n\nfunction hook_dlopne2() {\n    Interceptor.attach(Module.findExportByName("libdl.so", "dlopen"), {\n        onEnter: function (args) {\n            console.log("[dlopen] -> ", args[0].readCString());\n        }, onLeave: function () {\n\n        }\n    })\n}\nsetImmediate(hook_dlopne2);\nsetImmediate(hook_dlopne);<\/code><\/pre>\n
\"file\"<\/div><\/p>\n
\u6d41\u7a0b\u8bf4\u660e\u4e86\u4e00\u5207\uff0c\u76f4\u63a5\u5b9e\u9524\u4e86\u81ea\u5b9a\u4e49linker\u52a0\u56faso\uff0c\u90a3\u63a5\u4e0b\u6765\u6211\u4eec\u5e94\u8be5\u5982\u4f55\u505a\u5462\uff0c\u9996\u5148\u9700\u8981\u628a\u53e6\u4e00\u4e2aELF\u7ed9\u5206\u79bb\u51fa\u6765\u3002<\/p>\n
\u81ea\u5b9a\u4e49linker SO\u52a0\u56fa\u7684\u5927\u90e8\u5206\u601d\u8def\u5176\u5b9e\u5c31\u662f\u5206\u79bb\u51fa program header \u7b49\u5185\u5bb9\u8fdb\u884c\u5355\u72ec\u52a0\u5bc6\uff0c\u7136\u540e\u5728link\u7684\u65f6\u5019\u8865\u5145soinfo\u3002<\/p>\n
\u6211\u4eec\u4f7f\u7528010\u5728\u4e4b\u524dFix\u540e\u7684so\u91cc\u9762\u67e5\u627eELF<\/p>\n
\"file\"<\/div><\/p>\n
\u5728e8000\u5904\u6211\u4eec\u53d1\u73b0\u4e86ELF\u5934\uff0c\u6211\u4eec\u4f7f\u7528python\u811a\u672c\u5c06\u5176\u5206\u79bb\u51fa\u6765\uff1a<\/p>\n
with open('libjiagu_64.so_Dump','rb') as f:\n    s=f.read()\nwith open('libjiagu_64.so','wb') as f:\n    f.write(s[0xe8000::])<\/code><\/pre>\n
\u4f46\u662fprogram header\u5df2\u7ecf\u88ab\u52a0\u5bc6\u4e86\uff0c\u90a3\u4e48\u63a5\u4e0b\u6765\u6211\u4eec\u9700\u8981\u505a\u7684\u5c31\u662f\u627e\u5230\u5728\u54ea\u513f\u89e3\u5bc6\u7684\u3002<\/p>\n
\u8fd9\u91cc\u63a8\u8350oacia\u5927\u4f6c\u7684\u9879\u76ee\uff1ahttps:\/\/github.com\/oacia\/stalker_trace_so<\/a><\/p>\n
\u4f46\u662f\u5728\u4f7f\u7528\u5927\u4f6c\u7684\u9879\u76ee\u7684\u65f6\u5019\uff0c\u6211\u8f93\u51fa\u7684js\u6587\u4ef6\u663e\u793a\u7684\u5185\u5bb9\u90fd\u662f\u4e71\u7801\uff0c\u6240\u4ee5\u5bf9\u6e90\u7801\u505a\u4e86\u4e00\u4e9b\u4fee\u6539<\/p>\n
\u6539\u52a8\u70b9\u5982\u4e0b\uff1a<\/p>\n
\"file\"<\/div><\/p>\n
\u63a5\u4e0b\u6765\u5229\u7528stalker_trace_so\u6765\u5206\u6790\u7a0b\u5e8f\u6267\u884c\u6d41\uff1a
\n
\"file\"<\/div><\/p>\n
\u6ce8\u610f\u6b64\u5904\u9700\u8981\u6539\u4e3alibjiagu_64.so<\/p>\n
\u63a5\u4e0b\u6765\u6211\u4eec\u62ff\u5230\u5982\u4e0b\u6267\u884c\u6d41\uff1a<\/p>\n
call1:JNI_OnLoad\ncall2:j_interpreter_wrap_int64_t\ncall3:interpreter_wrap_int64_t\ncall4:_Znwm\ncall5:sub_13364\ncall6:_Znam\ncall7:sub_10C8C\ncall8:memset\ncall9:sub_9988\ncall10:sub_DE4C\ncall11:calloc\ncall12:malloc\ncall13:free\ncall14:sub_E0B4\ncall15:_ZdaPv\ncall16:sub_C3B8\ncall17:sub_C870\ncall18:sub_9538\ncall19:sub_9514\ncall20:sub_C9E0\ncall21:sub_C5A4\ncall22:sub_9674\ncall23:sub_15654\ncall24:sub_15DCC\ncall25:sub_15E98\ncall26:sub_159CC\ncall27:sub_1668C\ncall28:sub_15A4C\ncall29:sub_15728\ncall30:sub_15694\ncall31:sub_94B0\ncall32:sub_C8C8\ncall33:sub_CAC4\ncall34:sub_C810\ncall35:sub_906C\ncall36:dladdr\ncall37:strstr\ncall38:setenv\ncall39:_Z9__arm_a_1P7_JavaVMP7_JNIEnvPvRi\ncall40:sub_9A08\ncall41:sub_954C\ncall42:sub_103D0\ncall43:j__ZdlPv_1\ncall44:_ZdlPv\ncall45:sub_9290\ncall46:sub_7BAC\ncall47:strncpy\ncall48:sub_5994\ncall49:sub_5DF8\ncall50:sub_4570\ncall51:sub_59DC\ncall52:_ZN9__arm_c_19__arm_c_0Ev\ncall53:sub_9F60\ncall54:sub_957C\ncall55:sub_94F4\ncall56:sub_CC5C\ncall57:sub_5D38\ncall58:sub_5E44\ncall59:memcpy\ncall60:sub_5F4C\ncall61:sub_583C\ncall62:j__ZdlPv_3\ncall63:j__ZdlPv_2\ncall64:j__ZdlPv_0\ncall65:sub_9F14\ncall66:sub_9640\ncall67:sub_5894\ncall68:sub_58EC\ncall69:sub_9B90\ncall70:sub_2F54\ncall71:uncompress\ncall72:sub_C92C\ncall73:sub_440C\ncall74:sub_4BFC\ncall75:sub_4C74\ncall76:sub_5304\ncall77:sub_4E4C\ncall78:sub_5008\ncall79:mprotect\ncall80:strlen\ncall81:sub_3674\ncall82:dlopen\ncall83:sub_4340\ncall84:sub_3A28\ncall85:sub_3BDC\ncall86:sub_2F8C\ncall87:dlsym\ncall88:strcmp\ncall89:sub_5668\ncall90:sub_4C40\ncall91:sub_5BF0\ncall92:sub_7CDC\ncall93:sub_468C\ncall94:sub_7E08\ncall95:sub_86FC\ncall96:sub_8A84\ncall97:sub_7FDC\ncall98:interpreter_wrap_int64_t_bridge\ncall99:sub_9910\ncall100:sub_15944\ncall101:puts<\/code><\/pre>\n
\u73b0\u5728\u6211\u4eec\u77e5\u9053\u4e86\u63a7\u5236\u6d41\uff0c\u7136\u800c\u8fd8\u4e0d\u591f\uff0c\u56e0\u4e3a\u81ea\u5b9a\u4e49linker\u52a0\u56faso\uff0c\u6700\u540e\u8fd8\u662f\u9700\u8981dlopen\u53bb\u624b\u52a8\u52a0\u8f7d\u7684\uff0c\u90a3\u4e48\u6211\u4eec\u5bf9\u5bfc\u5165\u8868\u4e2d\u7684dlopen\u8fdb\u884c\u4ea4\u53c9\u3002<\/p>\n
\"file\"<\/div><\/p>\n
\u53d1\u73b0\u53ea\u6709\u4e00\u6b21\u6389\u7528\uff0c\u6211\u4eec\u8ddf\u8e2a\u8fc7\u53bb\u770b\u4e00\u770b\u3002<\/p>\n
\"file\"<\/div><\/p>\n
\u5168\u662fSwitch case\uff1a
\nhttp:\/\/androidxref.com\/9.0.0_r3\/xref\/bionic\/linker\/linker.cpp<\/a><\/p>\n
\"file\"<\/div><\/p>\n
\u53ef\u4ee5\u770b\u770blinker\u6e90\u7801\u4e2d\u7684\u9884\u94fe\u63a5\u90e8\u5206\uff0c\u4ee3\u7801\u5982\u51fa\u4e00\u6298\uff0c\u90a3\u4e48\u6b64\u65f6\u6211\u4eec\u5c31\u53ef\u4ee5\u5bfc\u5165soinfo\u7ed3\u6784\u4f53\u4e86<\/p>\n
\u5728 ida \u4e2d\u4f9d\u6b21\u70b9\u51fb View->Open subviews->Local Types ,\u5bfc\u5165\u7ed3\u6784\u4f53\uff08\u70b9\u51fbinsert\uff09<\/p>\n
\/\/IMPORTANT\n\/\/ELF64 \u542f\u7528\u8be5\u5b8f\n#define __LP64__  1\n\/\/ELF32 \u542f\u7528\u8be5\u5b8f\n\/\/#define __work_around_b_24465209__  1\n\n\/*\n\/\/https:\/\/android.googlesource.com\/platform\/bionic\/+\/master\/linker\/Android.bp\n\u67b6\u6784\u4e3a 32 \u4f4d \u5b9a\u4e49__work_around_b_24465209__\u5b8f\narch: {\n        arm: {cflags: ["-D__work_around_b_24465209__"],},\n        x86: {cflags: ["-D__work_around_b_24465209__"],},\n    }\n*\/\n\n\/\/android-platform\\bionic\\libc\\include\\link.h\n#if defined(__LP64__)\n#define ElfW(type) Elf64_ ## type\n#else\n#define ElfW(type) Elf32_ ## type\n#endif\n\n\/\/android-platform\\bionic\\linker\\linker_common_types.h\n\/\/ Android uses RELA for LP64.\n#if defined(__LP64__)\n#define USE_RELA 1\n#endif\n\n\/\/android-platform\\bionic\\libc\\kernel\\uapi\\asm-generic\\int-ll64.h\n\/\/__signed__-->signed\ntypedef signed char __s8;\ntypedef unsigned char __u8;\ntypedef signed short __s16;\ntypedef unsigned short __u16;\ntypedef signed int __s32;\ntypedef unsigned int __u32;\ntypedef signed long long __s64;\ntypedef unsigned long long __u64;\n\n\/\/A12-src\\msm-google\\include\\uapi\\linux\\elf.h\n\/* 32-bit ELF base types. *\/\ntypedef __u32   Elf32_Addr;\ntypedef __u16   Elf32_Half;\ntypedef __u32   Elf32_Off;\ntypedef __s32   Elf32_Sword;\ntypedef __u32   Elf32_Word;\n\n\/* 64-bit ELF base types. *\/\ntypedef __u64   Elf64_Addr;\ntypedef __u16   Elf64_Half;\ntypedef __s16   Elf64_SHalf;\ntypedef __u64   Elf64_Off;\ntypedef __s32   Elf64_Sword;\ntypedef __u32   Elf64_Word;\ntypedef __u64   Elf64_Xword;\ntypedef __s64   Elf64_Sxword;\n\ntypedef struct dynamic{\n  Elf32_Sword d_tag;\n  union{\n    Elf32_Sword d_val;\n    Elf32_Addr  d_ptr;\n  } d_un;\n} Elf32_Dyn;\n\ntypedef struct {\n  Elf64_Sxword d_tag;       \/* entry tag value *\/\n  union {\n    Elf64_Xword d_val;\n    Elf64_Addr d_ptr;\n  } d_un;\n} Elf64_Dyn;\n\ntypedef struct elf32_rel {\n  Elf32_Addr    r_offset;\n  Elf32_Word    r_info;\n} Elf32_Rel;\n\ntypedef struct elf64_rel {\n  Elf64_Addr r_offset;  \/* Location at which to apply the action *\/\n  Elf64_Xword r_info;   \/* index and type of relocation *\/\n} Elf64_Rel;\n\ntypedef struct elf32_rela{\n  Elf32_Addr    r_offset;\n  Elf32_Word    r_info;\n  Elf32_Sword   r_addend;\n} Elf32_Rela;\n\ntypedef struct elf64_rela {\n  Elf64_Addr r_offset;  \/* Location at which to apply the action *\/\n  Elf64_Xword r_info;   \/* index and type of relocation *\/\n  Elf64_Sxword r_addend;    \/* Constant addend used to compute value *\/\n} Elf64_Rela;\n\ntypedef struct elf32_sym{\n  Elf32_Word    st_name;\n  Elf32_Addr    st_value;\n  Elf32_Word    st_size;\n  unsigned char st_info;\n  unsigned char st_other;\n  Elf32_Half    st_shndx;\n} Elf32_Sym;\n\ntypedef struct elf64_sym {\n  Elf64_Word st_name;       \/* Symbol name, index in string tbl *\/\n  unsigned char st_info;    \/* Type and binding attributes *\/\n  unsigned char st_other;   \/* No defined meaning, 0 *\/\n  Elf64_Half st_shndx;      \/* Associated section index *\/\n  Elf64_Addr st_value;      \/* Value of the symbol *\/\n  Elf64_Xword st_size;      \/* Associated symbol size *\/\n} Elf64_Sym;\n\n#define EI_NIDENT   16\n\ntypedef struct elf32_hdr{\n  unsigned char e_ident[EI_NIDENT];\n  Elf32_Half    e_type;\n  Elf32_Half    e_machine;\n  Elf32_Word    e_version;\n  Elf32_Addr    e_entry;  \/* Entry point *\/\n  Elf32_Off e_phoff;\n  Elf32_Off e_shoff;\n  Elf32_Word    e_flags;\n  Elf32_Half    e_ehsize;\n  Elf32_Half    e_phentsize;\n  Elf32_Half    e_phnum;\n  Elf32_Half    e_shentsize;\n  Elf32_Half    e_shnum;\n  Elf32_Half    e_shstrndx;\n} Elf32_Ehdr;\n\ntypedef struct elf64_hdr {\n  unsigned char e_ident[EI_NIDENT]; \/* ELF "magic number" *\/\n  Elf64_Half e_type;\n  Elf64_Half e_machine;\n  Elf64_Word e_version;\n  Elf64_Addr e_entry;       \/* Entry point virtual address *\/\n  Elf64_Off e_phoff;        \/* Program header table file offset *\/\n  Elf64_Off e_shoff;        \/* Section header table file offset *\/\n  Elf64_Word e_flags;\n  Elf64_Half e_ehsize;\n  Elf64_Half e_phentsize;\n  Elf64_Half e_phnum;\n  Elf64_Half e_shentsize;\n  Elf64_Half e_shnum;\n  Elf64_Half e_shstrndx;\n} Elf64_Ehdr;\n\n\/* These constants define the permissions on sections in the program\n   header, p_flags. *\/\n#define PF_R        0x4\n#define PF_W        0x2\n#define PF_X        0x1\n\ntypedef struct elf32_phdr{\n  Elf32_Word    p_type;\n  Elf32_Off p_offset;\n  Elf32_Addr    p_vaddr;\n  Elf32_Addr    p_paddr;\n  Elf32_Word    p_filesz;\n  Elf32_Word    p_memsz;\n  Elf32_Word    p_flags;\n  Elf32_Word    p_align;\n} Elf32_Phdr;\n\ntypedef struct elf64_phdr {\n  Elf64_Word p_type;\n  Elf64_Word p_flags;\n  Elf64_Off p_offset;       \/* Segment file offset *\/\n  Elf64_Addr p_vaddr;       \/* Segment virtual address *\/\n  Elf64_Addr p_paddr;       \/* Segment physical address *\/\n  Elf64_Xword p_filesz;     \/* Segment size in file *\/\n  Elf64_Xword p_memsz;      \/* Segment size in memory *\/\n  Elf64_Xword p_align;      \/* Segment alignment, file & memory *\/\n} Elf64_Phdr;\n\ntypedef struct elf32_shdr {\n  Elf32_Word    sh_name;\n  Elf32_Word    sh_type;\n  Elf32_Word    sh_flags;\n  Elf32_Addr    sh_addr;\n  Elf32_Off sh_offset;\n  Elf32_Word    sh_size;\n  Elf32_Word    sh_link;\n  Elf32_Word    sh_info;\n  Elf32_Word    sh_addralign;\n  Elf32_Word    sh_entsize;\n} Elf32_Shdr;\n\ntypedef struct elf64_shdr {\n  Elf64_Word sh_name;       \/* Section name, index in string tbl *\/\n  Elf64_Word sh_type;       \/* Type of section *\/\n  Elf64_Xword sh_flags;     \/* Miscellaneous section attributes *\/\n  Elf64_Addr sh_addr;       \/* Section virtual addr at execution *\/\n  Elf64_Off sh_offset;      \/* Section file offset *\/\n  Elf64_Xword sh_size;      \/* Size of section in bytes *\/\n  Elf64_Word sh_link;       \/* Index of another section *\/\n  Elf64_Word sh_info;       \/* Additional section information *\/\n  Elf64_Xword sh_addralign; \/* Section alignment *\/\n  Elf64_Xword sh_entsize;   \/* Entry size if section holds table *\/\n} Elf64_Shdr;\n\n\/\/android-platform\\bionic\\linker\\linker_soinfo.h\ntypedef void (*linker_dtor_function_t)();\ntypedef void (*linker_ctor_function_t)(int, char**, char**);\n\n#if defined(__work_around_b_24465209__)\n#define SOINFO_NAME_LEN 128\n#endif\n\nstruct soinfo {\n#if defined(__work_around_b_24465209__)\n  char old_name_[SOINFO_NAME_LEN];\n#endif\n  const ElfW(Phdr)* phdr;\n  size_t phnum;\n#if defined(__work_around_b_24465209__)\n  ElfW(Addr) unused0; \/\/ DO NOT USE, maintained for compatibility.\n#endif\n  ElfW(Addr) base;\n  size_t size;\n\n#if defined(__work_around_b_24465209__)\n  uint32_t unused1;  \/\/ DO NOT USE, maintained for compatibility.\n#endif\n\n  ElfW(Dyn)* dynamic;\n\n#if defined(__work_around_b_24465209__)\n  uint32_t unused2; \/\/ DO NOT USE, maintained for compatibility\n  uint32_t unused3; \/\/ DO NOT USE, maintained for compatibility\n#endif\n\n  soinfo* next;\n  uint32_t flags_;\n\n  const char* strtab_;\n  ElfW(Sym)* symtab_;\n\n  size_t nbucket_;\n  size_t nchain_;\n  uint32_t* bucket_;\n  uint32_t* chain_;\n\n#if !defined(__LP64__)\n  ElfW(Addr)** unused4; \/\/ DO NOT USE, maintained for compatibility\n#endif\n\n#if defined(USE_RELA)\n  ElfW(Rela)* plt_rela_;\n  size_t plt_rela_count_;\n\n  ElfW(Rela)* rela_;\n  size_t rela_count_;\n#else\n  ElfW(Rel)* plt_rel_;\n  size_t plt_rel_count_;\n\n  ElfW(Rel)* rel_;\n  size_t rel_count_;\n#endif\n\n  linker_ctor_function_t* preinit_array_;\n  size_t preinit_array_count_;\n\n  linker_ctor_function_t* init_array_;\n  size_t init_array_count_;\n  linker_dtor_function_t* fini_array_;\n  size_t fini_array_count_;\n\n  linker_ctor_function_t init_func_;\n  linker_dtor_function_t fini_func_;\n\n\/*\n#if defined (__arm__)\n  \/\/ ARM EABI section used for stack unwinding.\n  uint32_t* ARM_exidx;\n  size_t ARM_exidx_count;\n#endif\n  size_t ref_count_;\n\/\/ \u600e\u4e48\u627e\u4e0d link_map \u8fd9\u4e2a\u7c7b\u578b\u7684\u58f0\u660e...\n  link_map link_map_head;\n\n  bool constructors_called;\n\n  \/\/ When you read a virtual address from the ELF file, add this\n  \/\/value to get the corresponding address in the process' address space.\n  ElfW (Addr) load_bias;\n\n#if !defined (__LP64__)\n  bool has_text_relocations;\n#endif\n  bool has_DT_SYMBOLIC;\n*\/\n};<\/code><\/pre>\n
\"file\"<\/div><\/p>\n
\u53ef\u4ee5\u53d1\u73b0\u8fd8\u662f\u4e0d\u5b8c\u5168\uff0c\u8bc1\u660e\u8fd9\u4e2asoinfo\u662f\u88ab\u9b54\u6539\u8fc7\u7684<\/p>\n
\u5bf9\u5176\u4ea4\u53c9\uff0c\u5411\u4e0a\u67e5\u770b\uff1a<\/p>\n
\"file\"<\/div><\/p>\n
\u4e0b\u65b9\u8fd8\u8c03\u7528\u4e86\u4e00\u4e2a\u51fd\u6570\uff0c\u6211\u4eec\u8fdb\u53bb\u770b\u770b\u3002<\/p>\n
\"file\"<\/div><\/p>\n
\u53d1\u73b0\u8fd9\u91cc\u7684\u6b65\u957f\u662f0x38<\/p>\n
\"file\"<\/div><\/p>\n
\u597d\u5de7\u4e0d\u5de7\uff0c\u7a0b\u5e8f\u5934\u5c31\u662f0x38\u5927\u5c0f\uff0c\u90a3\u4e48\u8fd9\u4e2a\u65b9\u6cd5\u80af\u5b9a\u662f\u5728\u52a0\u8f7d\u7a0b\u5e8f\u5934\u4e86\u3002<\/p>\n
\u65e2\u7136\u9700\u8981\u52a0\u8f7d\u7a0b\u5e8f\u5934\uff0c\u90a3\u4e48\u4ed6\u80af\u5b9a\u662f\u9700\u8981\u89e3\u5bc6\u4e4b\u524d\u88ab\u52a0\u5bc6\u7684\u7a0b\u5e8f\u5934\u6bb5\u7684
\n\u52a0\u8f7d\u5728sub_5668\u8c03\u7528\u4e8esub_4340\u53c8\u8c03\u7528\u4e8esub_440C\u6700\u540e\u5f62\u6210\u95ed\u73af
\n
\"file\"<\/div><\/p>\n
\u90a3\u6211\u4eec\u53ea\u9700\u8981\u627esub_7BAC\u5230sub_440C\u4e4b\u95f4\u8c03\u7528\u7684\u51fd\u6570\u5c31\u53ef\u4ee5\u4e86\u3002<\/p>\n
\"file\"<\/div><\/p>\n
\u8fd9\u4e2auncompress\u5c31\u53ca\u5176\u53ef\u7591\u4e86\uff0c\u8fd9\u662f\u4e2a\u89e3\u538b\u7f29\u7684\u65b9\u6cd5\uff0c\u6211\u4eec\u7a0d\u5fae\u5411\u4e0a\u627e\u627e\uff1a<\/p>\n
\u5c31\u80fd\u53d1\u73b0\u6211\u4eec\u7684\u8001\u719f\u4eba\u4e86<\/p>\n
\"file\"<\/div><\/p>\n
\u59a5\u59a5\u4e00RC4\uff0c\u4f46\u662f\u627e\u4e0d\u5230\u4ed6\u7684\u521d\u59cb\u5316\u7b97\u6cd5\uff0c\u867d\u7136\u5c31\u7b97\u6ca1\u6709\u521d\u59cb\u5316\u7b97\u6cd5\uff0c\u6211\u4eec\u4e5f\u53ef\u4ee5\u901a\u8fc7dump\u4ed6\u7684S\u76d2\uff0c\u6765\u89e3\u5bc6\uff0c\u4f46\u662f\u603b\u611f\u89c9\u602a\u602a\u7684\uff0c\u4e00\u7b79\u83ab\u5c55\u4e4b\u9645\uff0c\u6211\u4eec\u5411\u4e0a\u4ea4\u53c9\u53d1\u73b0\u4e86loc_571c
\n
\"file\"<\/div>
\n
\"file\"<\/div><\/p>\n
\u672a\u8bc6\u522b\u5c45\u7136\uff0c\u6211\u4eec\u8bc6\u522b\u770b\u770b<\/p>\n
\"file\"<\/div><\/p>\n
\u54df\uff0c\u8fd9\u4e0d\u662f\u521d\u59cb\u5316\u7b97\u6cd5\u4e48\u3002<\/p>\n
\u6211\u4eechook\u4ed6\u770b\u770b\u5bc6\u94a5<\/p>\n
\"file\"<\/div><\/p>\n
\nfunction hook_Rc4() {\n    var module = Process.findModuleByName("libjiagu_64.so");\n    Interceptor.attach(module.base.add(0x571C), {\n        onEnter(args) {\n            console.log(hexdump(args[0], {\n                offset: 0, length: 0x10, header: true, ansi: true\n            }))\n        }, onLeave(reval) {\n\n        }\n\n    });\n}\n\nfunction hook_dlopne() {\n\n    Interceptor.attach(Module.findExportByName("libdl.so", "android_dlopen_ext"), {\n        onEnter: function (args) {\n            var loadFileName = args[0].readCString();\n            \/\/  console.log("Load -> ", loadFileName);\n            if (loadFileName.indexOf('libjiagu') != -1) {\n                this.is_can_hook = true;\n            }\n        }, onLeave: function () {\n            if (this.is_can_hook) {\n                hook_Rc4();\n\n            }\n        }\n    })\n}\n\nsetImmediate(hook_dlopne);\n<\/code><\/pre>\n
\"file\"<\/div><\/p>\n
\u5728\u6700\u5f00\u59cb\u627e\u5230\u7684\u8fd9\u4e2a\u51fd\u6570\u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u770b\u5230\u52a0\u8f7d\u7684\u5730\u5740\u548c\u6587\u4ef6\u5927\u5c0f\uff0c\u90a3\u4e48\u6211\u4eec\u76f4\u63a5\u4f7f\u7528python\u8bfb\u53d6\u8fd9\u4e2a\u5927\u5c0f\u7684\u6bb5\u8fdb\u884c\u89e3\u5bc6<\/p>\n
\u6700\u5f00\u59cb\u5199\u4e00\u4e2apython\u811a\u672c\u89e3\u5bc6\u7684\u65f6\u5019\u6211\u4eec\u51fa\u73b0\u4e86\u5982\u4e0b\u95ee\u9898<\/p>\n
\"file\"<\/div><\/p>\n
\u663e\u7136RC4\u89e3\u5bc6\u51fa\u95ee\u9898\u4e86\uff0c\u6211\u4eec\u518d\u56de\u53bb\u770b\u770brc4\u52a0\u5bc6\u90e8\u5206<\/p>\n
\"file\"<\/div><\/p>\n
\u5bf9\u7740\u5176\u4e00\u987f\u8fd8\u539f\uff0c\u53d1\u73b0\u5c45\u7136\u6709\u9b54\u6539<\/p>\n
\"file\"<\/div><\/p>\n
\u4f46\u662f\u89e3\u5bc6\u51fa\u6765\u4f9d\u65e7\u4e0d\u5bf9\uff0c\u6211\u4eec\u770b\u770bS\u76d2\u662f\u5426\u4e00\u81f4<\/p>\n
\nfunction hook_Rc4_init() {\n    var module = Process.findModuleByName("libjiagu_64.so");\n    Interceptor.attach(module.base.add(0x58EC), {\n        onEnter(args) {\n            console.log(hexdump(args[2], {\n                offset: 0, length: 0x100, header: true, ansi: true\n            }))\n        }, onLeave(reval) {\n\n        }\n\n    });\n}\n\nfunction hook_Rc4_cry() {\n    var module = Process.findModuleByName("libjiagu_64.so");\n    Interceptor.attach(module.base.add(0x571C), {\n        onEnter(args) {\n            console.log(hexdump(args[0], {\n                offset: 0, length: 0x10, header: true, ansi: true\n            }))\n        }, onLeave(reval) {\n\n        }\n\n    });\n}\n\nfunction hook_dlopne() {\n\n    Interceptor.attach(Module.findExportByName("libdl.so", "android_dlopen_ext"), {\n        onEnter: function (args) {\n            var loadFileName = args[0].readCString();\n            \/\/  console.log("Load -> ", loadFileName);\n            if (loadFileName.indexOf('libjiagu') != -1) {\n                this.is_can_hook = true;\n            }\n        }, onLeave: function () {\n            if (this.is_can_hook) {\n                hook_Rc4_init();\n                hook_Rc4_cry();\n            }\n        }\n    })\n}\n\nsetImmediate(hook_dlopne);\n<\/code><\/pre>\n
\"file\"<\/div><\/p>\n
\"file\"<\/div><\/p>\n
\u663e\u7136Sbox\u662f\u4e0d\u4e00\u81f4\u7684\uff0c\u90a3\u4e48\u53cd\u6b63\u6709\u4e86Sbox\uff0c\u6211\u4eec\u5c31\u4e0d\u9700\u8981\u518d\u53bb\u7ba1init\u65b9\u6cd5\u4e86\uff0c\u76f4\u63a5\u4f7f\u7528\u73b0\u6210\u7684Sbox\u5c31\u53ef\u4ee5\u4e86\u3002<\/p>\n
\"file\"<\/div><\/p>\n
\u8fd8\u662f\u6ca1\u80fd\u89e3\u51fa\u6765\uff0c\u6709\u70b9\u96be\u53d7\u4e86\uff0c\u8fd8\u6709\u4e00\u4e2a\u7ec6\u8282\u5c31\u662fi , j \u6765\u81ea\u4e8eSbox\u7684\u7b2c257\u548c258\u4f4d\uff0c\u4ed6\u4eec\u4f1a\u4e0d\u4f1a\u4e0d\u662f0\u5462\uff1f\u6211\u4eec\u591adump\u4e24\u4e2a\u770b\u770b<\/p>\n
\u679c\u7136\u4e0d\u662f0\uff01<\/p>\n
\"file\"<\/div><\/p>\n
\"file\"<\/div><\/p>\n
\u89e3\u5bc6\u6210\u529f<\/p>\n
\"file\"<\/div><\/p>\n
\u62ff\u5230\u7684\u4e1c\u897f\uff0c\u4f3c\u4e4e\u4f9d\u65e7\u4e0d\u662f\u6b63\u786e\u7684\uff0c\u7ee7\u7eed\u67e5\u770b\u8c03\u7528\u94fe\uff0c\u6700\u540e\u5728sub_5304\u627e\u5230\u4e86\u8fd9\u6837\u7684\u4e00\u4e2a\u51fd\u6570<\/p>\n
\"file\"<\/div><\/p>\n
\"file\"<\/div><\/p>\n
\u8fd9\u91cc\u5176\u5b9e\u662f\u4e00\u4e2a\u5411\u91cf\u8fd0\u7b97\uff0c\u7b2c\u4e00\u4e2a\u5b57\u8282\u4e3a\u5f02\u6216\u7684\u503c\uff0c\u540e\u9762\u7684\u56db\u4e2a\u5b57\u8282\u8868\u793a\u5f02\u6216\u7684\u5927\u5c0f\u3002<\/p>\n
\u63a5\u4e0b\u6765\u91cd\u65b0\u7528\u811a\u672c\u628a\u4ed6\u4eec\u90fd\u89e3\u5bc6\u51fa\u6765\uff1a<\/p>\n
import zlib\nimport struct\ndef RC4(data, key):\n    for i in range(0,8):\n        print(hex(data[i]))\n    S = list(range(256))\n    j = 0\n    out = []\n\n    S = [0x76,0xac,0x57,0x5d,0x84,0x1a,0x43,0x9d,0xfb,0x5f,0xf8,0x59,0x35,0x9c,0x05,0x36,0xcd,0xd1,0x01,0xcc,0x39,0x49,0xb6,0x10,0x0e,0x5e,0x2e,0x2a,0x29,0x7f,0x72,0x88,0x9f,0x13,0x2c,0x6f,0x44,0x9b,0x67,0x4a,0xe0,0xee,0x77,0x34,0x97,0x0b,0x68,0x0c,0x4f,0xcf,0x8f,0x95,0x83,0x52,0xef,0x78,0x6a,0xde,0x09,0x1d,0xb5,0x48,0xa8,0xa1,0x46,0x85,0x02,0xe7,0xcb,0x41,0xb3,0x3e,0x71,0xb9,0x3b,0xe4,0x53,0xc9,0x73,0x42,0xe5,0x30,0x25,0x75,0xf9,0xdf,0x14,0x38,0xae,0xd2,0x0d,0x82,0x6c,0x93,0x6e,0xbe,0x5b,0x20,0xf3,0x47,0xd8,0xf1,0x8b,0x64,0xb1,0xab,0xad,0xf6,0xb8,0x7a,0x80,0x4d,0xb7,0x56,0xec,0xb0,0x66,0x18,0xc4,0x92,0x33,0xc8,0x60,0x4e,0x31,0xd9,0x5a,0x03,0xe6,0x15,0xd3,0xa3,0x21,0xa7,0x1c,0xc1,0x26,0x3c,0x1e,0x70,0xbf,0xa2,0xc5,0xc3,0xa0,0xc2,0xc0,0x98,0x28,0x89,0x50,0x4b,0x90,0x6b,0xe1,0x55,0x79,0x7c,0xfd,0xff,0xe3,0xaa,0x2b,0xa4,0xbd,0x62,0x2f,0x16,0xb4,0x7e,0xc6,0xfe,0x63,0xda,0x51,0xd6,0x32,0x3a,0x11,0xc7,0x3f,0x8e,0xd5,0xea,0xa5,0xba,0xca,0xed,0x08,0x22,0x74,0x5c,0x24,0x4c,0x7b,0xbb,0xa9,0x8d,0x96,0x91,0x1b,0xf2,0x17,0x94,0x45,0x19,0xce,0x06,0x8a,0x65,0x37,0x86,0xf5,0x12,0x9a,0x69,0x8c,0x87,0xd4,0xe8,0x6d,0xeb,0x58,0x23,0x00,0x40,0x1f,0xaf,0x99,0xdd,0x04,0x9e,0x7d,0x0a,0xa6,0x81,0xf0,0xf7,0x3d,0xe9,0xdb,0x0f,0xbc,0x27,0xfa,0xe2,0xfc,0xf4,0xb2,0xd0,0xdc,0xd7,0x54,0x07,0x2d,0x61]\n    i = 0x3\n    j = 0x5\n    for ch in data:\n        i = (i + 2) % 256\n        j = (j + S[i] + 1) % 256\n        S[i], S[j] = S[j], S[i]\n        out.append(ch ^ S[(S[i] + S[j]) % 256])\n\n    return out\n\ndef RC4decrypt(ciphertext, key):\n    return RC4(ciphertext, key)\n\nwrap_elf_start = 0x2D260\nwrap_elf_size = 0xB9956\nkey = b"vUV4#\\x91#SVt"\nwith open('libjiagu_64.so_Fix','rb') as f:\n    wrap_elf = f.read()\n\n# \u5bf9\u5bc6\u6587\u8fdb\u884c\u89e3\u5bc6\ndec_compress_elf = RC4decrypt(wrap_elf[wrap_elf_start:wrap_elf_start+wrap_elf_size], key)\ndec_elf = zlib.decompress(bytes(dec_compress_elf[4::]))\nwith open('wrap_elf','wb') as f:\n    f.write(dec_elf)\n\nclass part:\n    def __init__(self):\n        self.name = ""\n        self.value = b''\n        self.offset = 0\n        self.size = 0\n\nindex = 1\nextra_part = [part() for _ in range(7)]\nseg = ["a", "b", "c", "d"]\nv_xor = dec_elf[0]\nfor i in range(4):\n    size = int.from_bytes(dec_elf[index:index + 4], 'little')\n    index += 4\n    extra_part[i + 1].name = seg[i]\n    extra_part[i + 1].value = bytes(map(lambda x: x ^ v_xor, dec_elf[index:index + size]))\n    extra_part[i + 1].size = size\n    index += size\nfor p in extra_part:\n    if p.value != b'':\n        filename = f"libjiagu.so_{hex(p.size)}_{p.name}"\n        print(f"[{p.name}] get {filename}, size: {hex(p.size)}")\n        with open(filename, 'wb') as f:\n            f.write(p.value)\n<\/code><\/pre>\n
\"file\"<\/div><\/p>\n
\u5f97\u5230\u6bcf\u4e2a\u6bb5\u7684\u5927\u5c0f\u548c\u504f\u79fb\uff0c\u8fd8\u8bb0\u4e0d\u8bb0\u5f97\u6211\u4eec\u4e4b\u524d\u8bb2\u8fc7\u7a0b\u5e8f\u5934\u662f6\u4e2a\u5927\u5c0f0x38\u7684\u5b57\u8282\u7ec4\u6210\u7684\uff0c\u90a3\u4e48\u8ba1\u7b97\u4e00\u6ce2\u8fd9\u4e2aa\u6b63\u597d\u6ee1\u8db3\u7a0b\u5e8f\u5934\u7684\u5927\u5c0f\uff0c\u90a3\u4e48\u6211\u4eec\u4f7f\u7528010\u4fee\u8865\u539f\u672c\u7a0b\u5e8f<\/p>\n
\u7136\u540e\u6211\u4eec\u7ee7\u7eed\u89c2\u5bdf\uff0c.rela.plt\uff0c.rela.dyn\u50a8\u5b58\u7684\u5185\u5bb9\u662f\u8981\u8fdc\u8fdc\u5927\u4e8edynamic\u7684\uff0c\u6240\u4ee5\u6211\u4eec\u53ef\u4ee5\u9501\u5b9adynamic\u662fd\uff0c\u90a3\u4e48\u6211\u4eec\u6839\u636eprogram header table\u627e\u5230dynamic\u7684\u504f\u79fb\uff1a<\/p>\n
\"file\"<\/div>
\nCTRL+G\u8df3\u8f6c\u8fc7\u53bb<\/p>\n
\u586b\u5165d\u7684\u5185\u5bb9<\/p>\n
\"file\"<\/div><\/p>\n
\u63a5\u4e0b\u6765\uff1a<\/p>\n
\"file\"<\/div><\/p>\n
\u6839\u636e\u8fd9\u4e2a\u6211\u4eec\u5c31\u80fd\u77e5\u9053
\n0x7\u662fdyn\u504f\u79fb\uff0c0x8\u662fdyn\u5927\u5c0f
\n0x17\u662fplt\u504f\u79fb\uff0c0x2\u662fplt\u5927\u5c0f<\/p>\n
\"file\"<\/div><\/p>\n
\u5bf9\u5e94\u7684\u90a3\u4e48b\u5c31\u662fplt\u4e86\uff0cc\u5c31\u662fdyn\u4e86\uff0c\u4f9d\u65e7\u662f\u586b\u5165\u4fee\u590d\uff1a<\/p>\n
\"file\"<\/div><\/p>\n
\u81f3\u6b64\uff0c\u4e3bso\u4fee\u590d\u5b8c\u6210\u3002<\/p>\n
\"file\"<\/div><\/p>\n
Dex\u91ca\u653e\u5206\u6790<\/h3>\n
\u4e3a\u4e86\u65b9\u4fbfhook\u548c\u5206\u6790\uff0c\u6211\u4eec\u9700\u8981\u8bbe\u7f6e\u57fa\u5730\u5740\u4e3a\u8fd9\u4e2aso\u7684\u5730\u5740\uff1a\u8fd9\u91cc\u662f0xe8000<\/p>\n
\"file\"<\/div><\/p>\n
\u8bbe\u7f6e\u5b8c\u4e86\u4e4b\u540e\u5927\u5bb6\u662f\u5426\u8fd8\u8bb0\u5f97\u6700\u5f00\u59cb\u6211\u4eec\u8ddf\u8e2aopen\u7684\u65f6\u5019\u90a3\u51e0\u4e2a\u51fd\u6570\u5462\uff0c\u6211\u4eec\u73b0\u5728\u7ee7\u7eed\u8fc7\u53bb\u770b\u770b\u3002
\n
\"file\"<\/div><\/p>\n
\u6211\u4eec\u53ef\u4ee5\u89c2\u5bdf\u5230\u5728\u6253\u5f00dex\u4e4b\u540e\u4f1a\u8c03\u75280x136788\uff0c\u8c03\u7528\u5b8c\u4ed6\u4e4b\u540e\u8c03\u7528\u4e86artso\u91cc\u9762\u7684\u4e00\u4e9b\u64c0\u5377\u51fd\u6570FindClass\uff1f\uff1f\uff1f\u663e\u7136\u57280x136788\u4e4b\u540e\u5c31\u89e3\u5bc6\u5b8c\u6210\u4e86\uff0c\u90a3\u4e48\u6211\u4eec\u8ddf\u8fc7\u53bb\u770b\u770b
\n
\"file\"<\/div><\/p>\n
\u8fd9\u9644\u8fd1\u80af\u5b9a\u5c31\u5b58\u5728\u89e3\u5bc6\u89e3\u5bc6\u70b9\u4e86\uff0c\u5411\u4e0b\u770b\uff1a<\/p>\n
\"file\"<\/div>
\n\u6211\u4eec\u53ef\u4ee5\u627e\u5230\u8be5\u65b9\u6cd5\uff0c\u901a\u8fc7\u4e4b\u524dhook\u7684\u65b9\u5f0f\u6253\u5370\u4ed6\u7684\u8c03\u7528\u6808\u3002
\n
\"file\"<\/div>
\n
\"file\"<\/div>
\n\u8fd9<\/p>\n
\u4e4b\u540e\u7acb\u9a6c\u5c31\u662f\u52a0\u8f7dfindclass\u8fd9\u4e9b\uff0c\u6211\u4eec\u76f4\u63a5\u770b\u770b\u4ed6\u7684\u53c2\u6570\u662f\u4ec0\u4e48\u6837\u7684\uff0c\u8fd9\u91cc\u9700\u8981\u6ce8\u610f\uff0c\u4e4b\u524d\u6211\u4eechook\u7684\u662fAndroid_dlopen_ext\uff0c\u4f46\u662f\u7531\u4e8e\u8fd9\u4e2a\u662f\u4e3belf\u4e0d\u662f\u4f7f\u7528\u4e0a\u9762\u7684\u52a0\u8f7d\u7684\u4e86\uff0c\u6240\u4ee5\u6211\u4eec\u5f97\u6539\u7528\u5bf9dlopen\u505ahook\u3002<\/p>\n
hook\u4e00\u4e0b0x193868\uff0c\u7136\u540e\u770b\u4e00\u4e0b\u5185\u5b58<\/p>\n
\"file\"<\/div><\/p>\n
\u5168\u4f53\u8d77\u7acb\u3002<\/p>\n
\u63a5\u4e0b\u6765\u5c31\u662f\u628a\u8fd9\u4e2a\u5185\u5b58\u7ed9dump\u4e0b\u6765\u4e86\uff0c\u90a3\u4e48\u8981dump\u591a\u5927\u8fd8\u4e0d\u77e5\u9053\uff0c\u6211\u4eec\u770b\u770b\u522b\u7684\u53c2\u6570\u3002
\n
\"file\"<\/div><\/p>\n
\u53d1\u73b0aargs[2]\u5c31\u662fdex\u7684\u5927\u5c0f\uff0c\u90a3\u4e48\u6211\u4eec\u6839\u636e\u8fd9\u4e2a\u5199\u811a\u672c\u5c31\u53ef\u4ee5\u4e86\u3002<\/p>\n
function travedec() {\n    var base = Process.findModuleByName("libjiagu_64.so").base.add(0x193868);\n    var fileIndex = 0\n    \/\/console.log(base);\n    Interceptor.attach(base, {\n        onEnter: function (args) {\n            console.log(hexdump(args[1], {\n                offset: 0, length: 0x30, header: true, ansi: true\n            }))\n            console.log(args[2]);\n\n            try {\n                var length = args[2].toInt32();\n                var data = Memory.readByteArray(args[1], length);\n\n                var filePath = "\/data\/data\/com.swdd.txjgtest\/files\/" + fileIndex + ".dex";\n                var file_handle = new File(filePath, "wb");\n\n                if (file_handle && file_handle != null) {\n                    file_handle.write(data);\n                    file_handle.flush();\n                    file_handle.close();\n                    console.log("Data written to " + filePath);\n                    fileIndex++;\n                } else {\n                    console.log("Failed to create file: " + filePath);\n                }\n            } catch (e) {\n                console.log("Error: " + e.message);\n            }\n\n        }, onLeave: function (args) { }\n    })\n}\n\nfunction hook_dlopne() {\n    var once = true;\n    Interceptor.attach(Module.findExportByName(null, "dlopen"), {\n        onEnter: function (args) {\n            var loadFileName = args[0].readCString();\n            if (loadFileName.indexOf('libjiagu') != -1) {\n                console.log("Load -> ", loadFileName);\n                this.is_can_hook = true;\n            }\n        }, onLeave: function () {\n            if (this.is_can_hook && once) {\n                travedec();\n                once = false;\n\n            }\n        }\n    })\n}\n\nsetImmediate(hook_dlopne);\n<\/code><\/pre>\n
\"file\"<\/div><\/p>\n
\"file\"<\/div><\/p>\n
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