# Crypto Challenges

## Crypto 1- Go on Date?

The challenge description jsut gives a cipher to decode and a image file.

The image is that from Gravity Falls.

But we can see that the fike is edited and in the right bottom corner, you can see a morse code added.

On decoding the morse code, we get a date 03202020.

Using date-shift cipher, we can get the flag.

#### Flag-vulcon{date_shift_cipher_encodings}

## Crypto 2- Double

The challenge description gives us only a long cipher. Googled for double hex encoding but didnt get any tools or website to decode.

The hint gave a website [calcresult.com](https://)
where we have a calculator named twin hex calculator.

Using the decoder, we get the flag.

#### Flag- vulncon{Twin_Hex_Encoding_is_Hard}

## Crypto 3- can_you_c_the_password?
The challenge is to Decrypt the password and submit it as the flag!

We have a challenge file, which gives us group policies.

To solve this challenge we need either powersploit or a tool named gp3finder, whcih can be downloaded from [https://bitbucket.org/grimhacker/gpppfinder/src/master/](https://).

After installing the tool, we need to pass the command `gp3finder -D <cpassword>`. We can get the cpassword from preferences folder in one of the group policy folder.

#### Flag- vulncon{s3cur1ty_h4s_3volv3d_s0__much}

## Crypto 4- PolMOr
We have few clues in the challenge description- dcode university which tells us that our decoding mechanism is in dcode.fr website.

the file contains the follwing
`'-' 145BCGJNRTW
'.' 0378AEFMOPQXYV
' ' 269DHIKLSUZ

Encrypted: VEXCH881U3JPMLWO6TQ4MH5G5LNVUXGN86GWR1NZ8CA82AW7MLAY4UJ3E4K38335UBAUCQY6N4SJJ1RR6VBYSAOP9P9XBI35XSEPM4GHGFY39AWE9BJTBGZW93Q3Y2Y374JDFRF9AFE`

So navigated to dcode.fr and typed to see what are the various ciphers starting with pol and the second result was a cipher called pollux cipher. In pollux cipher we can see that it asks for a cipher text and also the replacements for `-, ., and spaces`

Once we give the cipher text and the replacements, we get the flag.

#### Flag- VULNCON{P0LLUX_4ND_M0RSE_AR3_BR0TH3RS}