CSAW 2011 Writeup

CSAW 2011 Writeup.md

Crypto1

• Number represent ascii code in decimal.
• Translate it to characters with program you wrote.
• Flag: Welcome to the 2011 NYU Poly CSAW CTF event. We have planned many challenges for you and we hope you have fun solving them all. The key for this challenge is cryptography.

Crypto2

• Number represent ascii code in hex.
• First split number with ':' and then translate it to characters with program you wrote.
• Flag: This is the first message being sent to you by the leadership of the Underground Uprising. If you have decoded this message correctly you will now know our next meeting will be held on Wednesday @ 7pm. We will also require a key to be let into the meetings; this week�s key will be overthrow.

Crypto3

• Number represent ascii code in binary
• Translate it to characters with program you wrote.
• Flag: Now decrypted text is like this.Last weeks meeting was a great success. We seem to be generating a lot of buzz about the movement. The key for next weeks meeting is resistance. If there is anyone else you know of that may be interested in joining bring them to the meeting this week. It will be held same time, same place.

Crypto4

• It's encrypted with base64 encoding.
• Decode it to characters with program you wrote.
• Flag: That meeting was a little crazy. We have no idea where those guys in the black suits came from, but we are looking into it. Use the key infiltration for next week�s meeting. Stay with the cause and we will succeed.

Crypto5

• It's encrypted with Caesar encryption.
• Decode it to characters with program you wrote.
• Flag: WE HAVE DISCOVERED THAT OUR LAST THREE TRANSMISSIONS WE'RE EASILY DECIPHERED. WE HAVE TAKEN CARE OF THE PARTY RESPONSIBLE FOR THEIR ENCODING AND ARE NOW USING A NEW METHOD. USE THE INFORMATION PROVIDED AT LAST WEEK.S MEETING TO DECIPHER ALL NEW MESSAGES. AND REMEMBER, THIS WEEK.S KEY IS OBFUSCATED.

Crypto6

• Again it's encrypted with Caesar encryption.
• Decode it to characters with program you wrote.
• Flag: FOR THE NEXT MEETING BE SURE TO USE KEY MANKIND. THERE HAVE BEEN SOME GREAT IDEAS FLYING AROUND OUR MEETINGS AS OF LATE. THE AUTHORITY WILL GO OVER SOME OF THEM TO SEE IF THEY FIT INTO OUR AGENDA.

Crypto7

• Again it's encrypted with Caesar encryption.
• Decode it to characters with program you wrote.
• Flag: AFTER MUCH DELIBERATION THE AUTHORITY HAS DECIDED THAT THERE IS ONE IDEA WHICH WE WILL TAKE UP AS PART OF OUR CAUSE. TO HEAR MORE ABOUT IT, BE SURE TO ATTEND THE NEXT MEETING, USE THE KEY GENERATION TO GET IN. THERE IS MUCH PLANNING NEEDED TO BE DONE, BUT IF WE CAN EXECUTE THE PLAN WE WILL BE FREED.

Networking-101

• He searched many image in google, and most of image is related with honey badger don t care
• Flag: honey badger don t care

it's "crazy nastyass honey badger"

it's "crazy nastyass honey badger"

How did u know?