solve(du ddu).py

solve(du ddu).py

from telnetlib import *
import string
from base64 import *
alpha = string.ascii_letters + string.digits
host,port = 'ec2-13-251-81-16.ap-southeast-1.compute.amazonaws.com',3333

c = 'OEEBNFHAIECBPEFBLCBHPFFAIBCENLHOLFBANOHLIKCPLIBNOPEKKHACNOHLOHECILCOMDGGJGDDMCGHPGFDLBBEPFFALIBNPFFALEBBMAGFJBDEMAGFIJCMNOHLKEABONEIJMDJKPAKJIDNOOELILCOOIENINCINIHN'

text = ''

for i in range(0,len(c),4):
	r = Telnet(host,port)
	r.read_until('Your choice: ')
	r.write('1\n')
	for char in alpha:
		r.read_until('Your message: ')
		r.write(text+char+'\n')
		r.read_until('The cipher text: ')
		cipher = b64decode(r.read_until('\n'))
		if cipher == c[:i+4]:
			text += char
			print text

# nc  ec2-13-251-81-16.ap-southeast-1.compute.amazonaws.com 3333