Portail:SecurIMAG Ensimag IT security club/Challenges

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Forbiddenbits CTF 2013 - writeup

See here.

GreHack 2012 - challenges

Have a look at: http://grehack.org/en/ctf/results/


TOR - network forensics

challenge 10 - Broken

  • author : Frisk0
  • category : reverse
  • instructions : Download the challenge Fichier:Broken.Frisk0.zip and send the solution to : desplanf (at) youknowwhichschool (dot) fr

Solved by Karim

challenge 9 - Web revenge

DOWN


challenge 8 - Hachoir

  • author: Guillaume
  • category: reverse
  • level: 400
  • instructions: Send your keygen to: tourong (at) ensimag (dot) fr

Fichier:Securimag-challenge8.zip

  • solved by Arnaud


challenge 7 - Encrypted filesystem

  • author: Arnaud
  • category: crypto
  • level 200

Fichier:Challenge7-crypto230.tar.gz

  • solved by Karim, Guillaume


challenge 6 - Let the reverse begin

  • author: Serpillierre
  • category: reverse
  • level 400
  • instruction: make a keygen and send it to people who have already solved it :

Fichier:Securimag-challenge-6-CEA-DAM.tgz

  • solved by : Karim, Guillaume, Arnaud

challenge 5 - Easy for Santa Claus and his helpers

  • author: user:hossen
  • category: crypto
  • solved by : Arnaud, Guillaume


challenge 4 - binhaxor


  • solved by : Guillaume, Karim, Arnaud


challenge 3 - undress-me


  • solved by : Karim, Arnaud, Guillaume


challenge 2 - MI6 Secret Protocol


  • solved by : Arnaud, Karim, ?


Challenge 1 - Web web web

DOWN

  • The flag is in the file "index.php"
  • You have to found a way to read it

Challenge 1


  • solved by : Karim, Guillaume, Arnaud, ?


Challenge 0 - where everything begins

  • The flag is "encrypted" (the used cipher is precised in the trace).
  • # and _ are the most common characters in the confidential data.
  • the PCAP file is a network exchanges trace. You can consult such a file with tools such as Wireshark, tcpdump...
  • you then have to enter the solution on a website you have to find within the trace.

Challenge 0


  • solved by : Karim, Camille, Braulio, BugBuster, ?