{"id":285,"date":"2022-12-19T21:25:07","date_gmt":"2022-12-19T13:25:07","guid":{"rendered":"https:\/\/shangwendada.co\/?p=285"},"modified":"2022-12-20T16:22:11","modified_gmt":"2022-12-20T08:22:11","slug":"reversenisactf-2022sign-ezc%e8%bf%bd%e8%b8%aa%e5%91%bd%e5%90%8d%e7%a9%ba%e9%97%b4","status":"publish","type":"post","link":"https:\/\/blog.shangwendada.top\/index.php\/2022\/12\/19\/reversenisactf-2022sign-ezc%e8%bf%bd%e8%b8%aa%e5%91%bd%e5%90%8d%e7%a9%ba%e9%97%b4\/","title":{"rendered":"[Reverse][NISACTF 2022]sign-ezc++(\u8ffd\u8e2a\u547d\u540d\u7a7a\u95f4)"},"content":{"rendered":"
\n

\u9898\u76ee\u4e0b\u8f7d:[NISACTF 2022]sign-ezc++<\/a><\/h2>\n

\u547d\u540d\u7a7a\u95f4:<\/h1>\n

\u5047\u8bbe\u8fd9\u6837\u4e00\u79cd\u60c5\u51b5\uff0c\u5f53\u4e00\u4e2a\u73ed\u4e0a\u6709\u4e24\u4e2a\u540d\u53eb Zara \u7684\u5b66\u751f\u65f6\uff0c\u4e3a\u4e86\u660e\u786e\u533a\u5206\u5b83\u4eec\uff0c\u6211\u4eec\u5728\u4f7f\u7528\u540d\u5b57\u4e4b\u5916\uff0c\u4e0d\u5f97\u4e0d\u4f7f\u7528\u4e00\u4e9b\u989d\u5916\u7684\u4fe1\u606f\uff0c\u6bd4\u5982\u4ed6\u4eec\u7684\u5bb6\u5ead\u4f4f\u5740\uff0c\u6216\u8005\u4ed6\u4eec\u7236\u6bcd\u7684\u540d\u5b57\u7b49\u7b49\u3002<\/p>\n

\u540c\u6837\u7684\u60c5\u51b5\u4e5f\u51fa\u73b0\u5728 C++ \u5e94\u7528\u7a0b\u5e8f\u4e2d\u3002\u4f8b\u5982\uff0c\u60a8\u53ef\u80fd\u4f1a\u5199\u4e00\u4e2a\u540d\u4e3a xyz() \u7684\u51fd\u6570\uff0c\u5728\u53e6\u4e00\u4e2a\u53ef\u7528\u7684\u5e93\u4e2d\u4e5f\u5b58\u5728\u4e00\u4e2a\u76f8\u540c\u7684\u51fd\u6570 xyz()\u3002\u8fd9\u6837\uff0c\u7f16\u8bd1\u5668\u5c31\u65e0\u6cd5\u5224\u65ad\u60a8\u6240\u4f7f\u7528\u7684\u662f\u54ea\u4e00\u4e2a xyz() \u51fd\u6570\u3002<\/p>\n

\u56e0\u6b64\uff0c\u5f15\u5165\u4e86\u547d\u540d\u7a7a\u95f4\u8fd9\u4e2a\u6982\u5ff5\uff0c\u4e13\u95e8\u7528\u4e8e\u89e3\u51b3\u4e0a\u9762\u7684\u95ee\u9898\uff0c\u5b83\u53ef\u4f5c\u4e3a\u9644\u52a0\u4fe1\u606f\u6765\u533a\u5206\u4e0d\u540c\u5e93\u4e2d\u76f8\u540c\u540d\u79f0\u7684\u51fd\u6570\u3001\u7c7b\u3001\u53d8\u91cf\u7b49\u3002\u4f7f\u7528\u4e86\u547d\u540d\u7a7a\u95f4\u5373\u5b9a\u4e49\u4e86\u4e0a\u4e0b\u6587\u3002\u672c\u8d28\u4e0a\uff0c\u547d\u540d\u7a7a\u95f4\u5c31\u662f\u5b9a\u4e49\u4e86\u4e00\u4e2a\u8303\u56f4\u3002<\/p>\n

\u6211\u4eec\u4e3e\u4e00\u4e2a\u8ba1\u7b97\u673a\u7cfb\u7edf\u4e2d\u7684\u4f8b\u5b50\uff0c\u4e00\u4e2a\u6587\u4ef6\u5939(\u76ee\u5f55)\u4e2d\u53ef\u4ee5\u5305\u542b\u591a\u4e2a\u6587\u4ef6\u5939\uff0c\u6bcf\u4e2a\u6587\u4ef6\u5939\u4e2d\u4e0d\u80fd\u6709\u76f8\u540c\u7684\u6587\u4ef6\u540d\uff0c\u4f46\u4e0d\u540c\u6587\u4ef6\u5939\u4e2d\u7684\u6587\u4ef6\u53ef\u4ee5\u91cd\u540d\u3002
\n

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

\u9898\u89e3:<\/h1>\n

\"file\"<\/div>
\n\u6253\u5f00\u6587\u4ef6\u53d1\u73b0\u6709\u4e00\u4e2a\u540d\u4e3ahuman\u7684\u547d\u540d\u7a7a\u95f4
\n\u76f4\u63a5\u5728\u51fd\u6570\u91cc\u9762\u641c\u7d22human\u5c31\u53ef\u4ee5\u53d1\u73b0flag\u51fd\u6570
\n\"file\"<\/p>\n

EXP:<\/h1>\n
#include<iostream>\n#include<algorithm>\n#include<cstdio>\n#include<cmath>\n#include<map>\n#include<vector>\n#include<queue>\n#include<stack>\n#include<set>\n#include<string>\n#include<cstring>\n#include<list>\n#include<stdlib.h>\nusing namespace std;\ntypedef int status;\ntypedef int selemtype;\n\/*\n                   _ooOoo_\n                  o8888888o\n                  88" . "88\n                  (| -_- |)\n                  O\\  =  \/O\n               ____\/`---'\\____\n            .'  \\\\|     |\/\/  `.\n            \/  \\\\|||  :  |||\/\/  \\\n           \/  _||||| -:- |||||-  \\\n           |   | \\\\\\  -  \/\/\/ |   |\n           | \\_|  ''\\---\/''  |   |\n           \\  .-\\__  `-`  ___\/-. \/\n         ___`. .'  \/--.--\\  `. . __\n      ."" '<  `.___\\_<|>_\/___.'  >'"".\n     | | :  `- \\`.;`\\ _ \/`;.`\/ - ` : | |\n     \\  \\ `-.   \\_ __\\ \/__ _\/   .-` \/  \/\n======`-.____`-.___\\_____\/___.-`____.-'======\n                   `=---='\n^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\n    \u4f5b\u7956\u4fdd\u4f51       \u6c38\u4e0d\u5b95\u673a     \u6c38\u65e0BUG\n*\/\nchar flag[48] =\n{\n  'D',\n  'Y',\n  'Y',\n  'I',\n  '^',\n  'L',\n  'q',\n  '~',\n  'b',\n  'c',\n  'y',\n  'U',\n  'c',\n  'y',\n  'U',\n  'D',\n  'C',\n  'Y',\n  'K',\n  'U',\n  'x',\n  'o',\n  'U',\n  'y',\n  'c',\n  'm',\n  'd',\n  'w',\n  '\\0',\n  '\\0',\n  '\\0',\n  '\\0',\n  '\\0',\n  '\\0',\n  '\\0',\n  '\\0',\n  '\\0',\n  '\\0',\n  '\\0',\n  '\\0',\n  '\\0',\n  '\\0',\n  '\\0',\n  '\\0',\n  '\\0',\n  '\\0',\n  '\\0',\n  '\\0'\n};\n\nint main ()\n{\n    for(int i = 0 ; i < strlen(flag); i ++ )\n    {\n        printf("%c",flag[i]^0xA);\n\n    }\n}\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"
\u9898\u76ee\u4e0b\u8f7d:[NISACTF 2022]sign-ezc++ \u547d\u540d\u7a7a\u95f4: \u5047\u8bbe\u8fd9\u6837\u4e00\u79cd\u60c5\u51b5\uff0c\u5f53\u4e00\u4e2a\u73ed\u4e0a\u6709\u4e24\u4e2a\u540d\u53eb […]<\/p>\n","protected":false},"author":1,"featured_media":198,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-285","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/blog.shangwendada.top\/index.php\/wp-json\/wp\/v2\/posts\/285","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=285"}],"version-history":[{"count":2,"href":"https:\/\/blog.shangwendada.top\/index.php\/wp-json\/wp\/v2\/posts\/285\/revisions"}],"predecessor-version":[{"id":290,"href":"https:\/\/blog.shangwendada.top\/index.php\/wp-json\/wp\/v2\/posts\/285\/revisions\/290"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/blog.shangwendada.top\/index.php\/wp-json\/wp\/v2\/media\/198"}],"wp:attachment":[{"href":"https:\/\/blog.shangwendada.top\/index.php\/wp-json\/wp\/v2\/media?parent=285"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.shangwendada.top\/index.php\/wp-json\/wp\/v2\/categories?post=285"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.shangwendada.top\/index.php\/wp-json\/wp\/v2\/tags?post=285"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}