CTFlearn - HYPERSTREAM TEST #2

https://beta.ctflearn.com/problems/443

Cryptography

leg3ndaryphil

Tips: Bacon is a kind of encoding method

Useful link:

https://mothereff.in/bacon

CTFlearn - HEXTROADINARY

https://beta.ctflearn.com/problems/158

Cryptography

crypto

Tips: The coder name "ROXy" focus on her name

useful link:
http://xor.pw/#

Remember to include 0x at your answer

CTFlearn - C_E_ER

https://beta.ctflearn.com/problems/304

Cryptography

yakatoi

Tips: C_E_ER means Caesar Cipher 

where key is 13

Useful link

http://md5decrypt.net/en/Caesar/#results

CTFlearn - BASE 2 2 THE 6

https://beta.ctflearn.com/problems/192

Cryptography

pedro

Tips: Base 64 Encoded

Useful link:

https://www.asciitohex.com/

CTFlearn - REVERSE POLARITY

https://beta.ctflearn.com/problems/230

Cryptography

aglickman

Tips: Binary Encoded

Useful link:

https://www.asciitohex.com/

CTFlearn - CHARACTER ENCODING

https://beta.ctflearn.com/problems/115

Cryptography

dknj11902

Tips: Hexadecimal Encode

Useful link:

https://www.asciitohex.com/

CTFlearn - SO MANY 64S

https://beta.ctflearn.com/problems/121

Cryptography

voidmercy

Sample Code:

import base64

with open("flag.txt",encoding = 'utf-8') as f:

ctext=f.read()

while True:
  try:
    ctext=base64.b64decode(ctext)
  except Exception as e:
    print(ctext)
    break

CTFlearn - ENCRYPTION MASTER

https://beta.ctflearn.com/problems/243

Cryptography

skywalkrs

Tips, try the following decode sequence:

1) Base64 

2) Hexadecimal

3) Binary

4) Base64

I_AM_PROUD_OF_YOU

Useful link:

https://www.asciitohex.com/