\nhttps:\/\/github.com\/SHangwendada\/SHCTF-easyLogin\/tree\/main<\/a><\/p>\n
\u65b9\u6cd51\uff1a<\/h2>\n
\u6539\u673aAPP\u76f4\u63a5\u6539\uff0c\u68ad\u54c8\u3002<\/p>\n
\u65b9\u6cd52\uff1a<\/h2>\n
![\"file\"](\"https:\/\/blog.shangwendada.top\/wp-content\/uploads\/2024\/11\/image-1730950254397.png\")
<\/div>\n\u76f4\u63a5\u770b\u4e3b\u4f53\u903b\u8f91\uff0c\u5176\u5b9e\u5c31\u662f\u53d1\u9001\u4e86Username\u4ee5\u53capassword\u8fd8\u6709passticket\uff0cusername\u548cpassword\u90fd\u7ed9\u6211\u4eec\u4e86\uff0c\u4f46\u662fpassticket\u5e76\u6ca1\u6709\u7ed9\u6211\u4eec\uff0c\u56e0\u6b64\u9700\u8981\u53bb\u9006\u5411\uff0c\u9996\u5148\u6839\u636e\u4e0b\u9762Toast\u7684\u4ee3\u7801\u544a\u8bc9\u4e86\u6211\u4eec\u8fd9\u4e2a\u53ef\u80fd\u548c\u8bbe\u5907\u6709\u5173\uff0c\u8fd9\u4e2a\u65f6\u5019\u9700\u8981\u8003\u8651\u7684\u9a8c\u8bc1\u662f\u5426\u65b0\u8bbe\u5907\u662f\u5426\u4f7f\u7528\u5230\u8bbe\u5907id\u4e4b\u7c7b\u7684\u3002
\n
![\"file\"](\"https:\/\/blog.shangwendada.top\/wp-content\/uploads\/2024\/11\/image-1730950261493.png\")
<\/div>\ngetPassticket\u6ce8\u518c\u4e8eeasyLogin\uff0c\u90a3\u4e48\u6211\u4eec\u9700\u8981\u4f7f\u7528IDA\u76f4\u63a5\u5206\u6790easyLogin\u3002
\n\u8fd9\u91cc\u6211\u7684\u8bbe\u5907\u4e3aArm64 \u56e0\u6b64\u6211\u5206\u6790\u7684\u4e3aarm64-v8a\uff0c\uff08\u6ce8\u610f\u4e0d\u540c\u8bbe\u5907\u63a5\u4e0b\u6765\u7684\u64cd\u4f5c\u53ef\u80fd\u4e0d\u5c3d\u76f8\u540c\uff0c\u4f46\u662f\u539f\u7406\u903b\u8f91\u57fa\u672c\u4e00\u81f4\uff09
\n\u51fd\u6570\u5217\u8868\u4e2d\u6ca1\u6709\u53d1\u73b0Jni_Onload\uff0c\u53ef\u4ee5\u786e\u5b9a\u4e3a\u9759\u6001\u6ce8\u518c\uff0c\u9759\u6001\u6ce8\u518c\u76f4\u63a5\u641c\u7d22\u51fd\u6570\u540d\u5b57\u5c31\u597d\u4e86\uff1a
\n
![\"file\"](\"https:\/\/blog.shangwendada.top\/wp-content\/uploads\/2024\/11\/image-1730950271533.png\")
<\/div>\n\u8fd9\u91cc\u9700\u8981\u6ce8\u610f\u53c2\u6570\u7c7b\u578b\u53d8\u6362\uff0c\u53ef\u80fd\u9700\u8981\u624b\u52a8\u66f4\u6539\uff1a
\n
![\"file\"](\"https:\/\/blog.shangwendada.top\/wp-content\/uploads\/2024\/11\/image-1730950346033.png\")
<\/div><\/p>\n![\"file\"](\"https:\/\/blog.shangwendada.top\/wp-content\/uploads\/2024\/11\/image-1730950351362.png\")
<\/div>\n\u53ef\u4ee5\u53d1\u73b0\u8fd9\u91cc\u6709\u8f93\u51faDevice ID\u7684\u5b57\u6837\u3002
\n
![\"file\"](\"https:\/\/blog.shangwendada.top\/wp-content\/uploads\/2024\/11\/image-1730950357496.png\")
<\/div>\n\u90a3\u4e48\u6839\u636e\u63d0\u793a\uff0c\u6211\u4eec\u7684\u4e3b\u8981\u76ee\u6807\u5c31\u662f\u66ff\u6362\u6389\u8fd9\u4e2adevice id\u3002
\n\u67e5\u770b\u4e00\u4e0b\u6570\u636e\u5305\uff1a
\n
![\"file\"](\"https:\/\/blog.shangwendada.top\/wp-content\/uploads\/2024\/11\/image-1730950365580.png\")
<\/div>\n\u53ef\u4ee5\u53d1\u73b0passticket\u4e0a\u4f20\u7684\u5e76\u4e0d\u662f\u8bbe\u5907id\uff0c\u4e8c\u5341\u54c8\u5e0c\u4e4b\u540e\u7684\u8bbe\u5907id\uff0c\u5e76\u4e14\u663e\u7136\u4e0d\u662fmd5\u503c\u3002
\n\u8fd9\u4e2a\u65f6\u5019\u8981\u4e48\u5206\u6790\u8fd9\u4e2apassticket \u8981\u4e48 \u590d\u73b0\u8fd9\u4e2a\u54c8\u5e0c\u7b97\u6cd5\u3002
\n
![\"file\"](\"https:\/\/blog.shangwendada.top\/wp-content\/uploads\/2024\/11\/image-1730950375361.png\")
<\/div>\n\u770b\u5230\u8fd9\u91cc\u57fa\u672c\u4e5f\u4e0d\u4f1a\u6709\u60f3\u53bb\u9006\u5411\u54c8\u5e0c\u7b97\u6cd5\u7684\u601d\u8def\u4e86\u3002
\n\u53ea\u6709\u8c03\u8bd5\u6216\u8005FridaHook\u4e86\u3002
\n\u4f46\u662f\u7a0b\u5e8f\u5b58\u5728hook\u68c0\u6d4b
\n\u4e3b\u8981\u770binit Array\u6bb5\u4e2d\u7684\u4e00\u4e9b\u5185\u5bb9\uff1a
\n
![\"file\"](\"https:\/\/blog.shangwendada.top\/wp-content\/uploads\/2024\/11\/image-1730950387340.png\")
<\/div>\n\u521b\u5efa\u4e86\u4e24\u4e2a\u7ebf\u7a0b
\n
![\"file\"](\"https:\/\/blog.shangwendada.top\/wp-content\/uploads\/2024\/11\/image-1730950393068.png\")
<\/div>\n\u68c0\u6d4bIDA\u7684\u6211\u4eec\u4e0d\u7528\u770b\uff0c\u76f4\u63a5\u64b8\u68c0\u6d4bfrida\u7684\uff1a
\n
![\"file\"](\"https:\/\/blog.shangwendada.top\/wp-content\/uploads\/2024\/11\/image-1730950399442.png\")
<\/div>\n\u6bd4\u8f83\u4e86\u672c\u5730\u548c\u7cfb\u7edf\u7684libc\u4e2d signal \u7684\u524d8\u4e2a\u5b57\u7b26\u662f\u5426\u4e00\u81f4\uff0c\u4e0d\u4e00\u81f4\u5219\u8ba4\u4e3a\u88abhook\uff0c\u8fd9\u91cchook\u70b9\u53ef\u4ee5\u5728v13==v12
\n
![\"file\"](\"https:\/\/blog.shangwendada.top\/wp-content\/uploads\/2024\/11\/image-1730950406402.png\")
<\/div>\n\u4fee\u6539\u4ed6\u4eec\u7684\u6bd4\u8f83\u7ed3\u679c\u5373\u53ef\uff0c\u8fd9\u91cc\u503c\u7684\u6ce8\u610f\u7684\u662f\u7531\u4e8e\u65f6\u673a\u95ee\u9898\u53ef\u4ee5\u76f4\u63a5hook pthread_create\u6765hook\u8fd9\u4e2a\u70b9\u4f4d<\/p>\n
function passAnti1() {\n Interceptor.attach(Module.getExportByName(null, "pthread_create"), {\n onEnter: function (args) {\n this.funAddr = args[2];\n var instruction = Instruction.parse(this.funAddr.add(0x2b4));\n if (instruction.mnemonic === "cmp") {\n Interceptor.attach(this.funAddr.add(0x2b4), {\n onEnter: function (args) {\n this.context.x25 = this.context.x24;\n }\n });\n }\n },\n onLeave: function (retval) {\n\n console.log("pthread_create returned");\n }\n });\n}<\/code><\/pre>\n\u6216\u8005\u91cd\u5b9a\u5411fread:<\/p>\n
function hook_memcmp_addr() {\n \/\/hook\u53cd\u8c03\u8bd5\n var memcmp_addr = Module.findExportByName("libc.so", "fread");\n if (memcmp_addr !== null) {\n \/\/ console.log("fread address: ", memcmp_addr);\n Interceptor.attach(memcmp_addr, {\n onEnter: function (args) {\n this.buffer = args[0]; \/\/ \u4fdd\u5b58 buffer \u53c2\u6570\n this.size = args[1]; \/\/ \u4fdd\u5b58 size \u53c2\u6570\n this.count = args[2]; \/\/ \u4fdd\u5b58 count \u53c2\u6570\n this.stream = args[3]; \/\/ \u4fdd\u5b58 FILE* \u53c2\u6570\n },\n onLeave: function (retval) {\n \/\/ console.log(this.count.toInt32());\n if (this.count.toInt32() == 8) {\n Memory.writeByteArray(this.buffer, [0x50, 0x00, 0x00, 0x58, 0x00, 0x02, 0x1f, 0xd6]);\n retval.replace(8); \/\/ \u586b\u5145\u524d8\u5b57\u8282\n \/\/ console.log(hexdump(this.buffer));\n }\n }\n });\n } else {\n console.log("Error: memcmp function not found in libc.so");\n }\n}<\/code><\/pre>\n\u6700\u540e\u6211\u4eec\u7684\u811a\u672c\u8fd8\u9700\u8981\u6ce8\u610f\u65f6\u673a\uff0c\u8fd9\u91cc\u7ed9\u51fa\u5b8c\u6574\u7684\u91cd\u5b9a\u5411\u7684\u4ee3\u7801\uff1a<\/p>\n
function hook_memcmp_addr() {\n var memcmp_addr = Module.findExportByName("libc.so", "fread");\n if (memcmp_addr !== null) {\n Interceptor.attach(memcmp_addr, {\n onEnter: function (args) {\n this.buffer = args[0]; \n this.size = args[1]; \n this.count = args[2]; \n this.stream = args[3]; \n },\n onLeave: function (retval) {\n if (this.count.toInt32() == 8) {\n Memory.writeByteArray(this.buffer, [0x50, 0x00, 0x00, 0x58, 0x00, 0x02, 0x1f, 0xd6]);\n retval.replace(8);\n }\n }\n });\n } else {\n console.log("Error: memcmp function not found in libc.so");\n }\n}\n\nfunction NativeHook() {\n var base = Module.getBaseAddress("libeasylogin.so");\n console.log("[Base]->", base);\n\n Interceptor.attach(base.add(0x1F250), {\n onEnter: function (args) {\n try {\n var originalStr = this.context.x0.readCString();\n console.log("Original x0:", originalStr);\n var newValue = "a24256ec5983b4a8";\n\n if (newValue.length <= originalStr.length) {\n Memory.writeUtf8String(this.context.x0, newValue);\n\n console.log("Modified x0:", this.context.x0.readCString());\n } else {\n console.warn("New string is longer than the original. Skipping write to avoid overflow.");\n }\n } catch (e) {\n console.error("Error modifying x0 content:", e);\n }\n }\n });\n}\n\nfunction Hookdlopenext() {\n hook_memcmp_addr();\n var dlopen = Module.findExportByName(null, "android_dlopen_ext");\n Interceptor.attach(dlopen, {\n onEnter: function (args) {\n var filePath = args[0].readCString();\n console.log("[android_dlopen_ext] -> ", filePath);\n if (filePath.indexOf("libeasylogin") != -1) {\n this.isCanHook = true;\n }\n }, onLeave: function (retValue) {\n if (this.isCanHook) {\n this.isCanHook = false;\n NativeHook();\n }\n }\n })\n}\n\nsetImmediate(Hookdlopenext);<\/code><\/pre>\n\u603b\u7ed3\uff1a<\/h2>\n
\u672c\u9898\u6ca1\u6709\u6807\u51c6\u89e3\uff0c\u5e08\u5085\u4eec\u53ef\u4ee5\u6253\u5f00\u601d\u7ef4\uff0c\u9700\u6c42\u66f4\u591a\u7684\u7834\u89e3\u65b9\u5f0f\uff0c\u4f53\u4f1aRe\u7684\u4e50\u8da3\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
[SHCTF]easyLogin \u9644\u4e0a\u6e90\u7801\uff0c\u611f\u5174\u8da3\u7684\u5e08\u5085\u53ef\u4ee5\u770b\u770b https:\/\/github.com\/SHa […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[13,1],"tags":[],"class_list":["post-1119","post","type-post","status-publish","format-standard","hentry","category-android","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/blog.shangwendada.top\/index.php\/wp-json\/wp\/v2\/posts\/1119","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.shangwendada.top\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.shangwendada.top\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.shangwendada.top\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.shangwendada.top\/index.php\/wp-json\/wp\/v2\/comments?post=1119"}],"version-history":[{"count":3,"href":"https:\/\/blog.shangwendada.top\/index.php\/wp-json\/wp\/v2\/posts\/1119\/revisions"}],"predecessor-version":[{"id":1241,"href":"https:\/\/blog.shangwendada.top\/index.php\/wp-json\/wp\/v2\/posts\/1119\/revisions\/1241"}],"wp:attachment":[{"href":"https:\/\/blog.shangwendada.top\/index.php\/wp-json\/wp\/v2\/media?parent=1119"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.shangwendada.top\/index.php\/wp-json\/wp\/v2\/categories?post=1119"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.shangwendada.top\/index.php\/wp-json\/wp\/v2\/tags?post=1119"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}