ASIS CTF 2015 Quals - dump

asisctf_dump.py

import hashlib

# calculate key
key_ar = [0 for i in range(5)]
key_ar[0] = hex(58559604012647)[2:].decode('hex')
key_ar[1] = hex(27697077611219024)[2:].decode('hex')
key_ar[2] = hex(28839576914310229)[2:].decode('hex')
key_ar[3] = hex(14469853439423811)[2:].decode('hex')
key_ar[4] = hex(21189029315236706)[2:].decode('hex')
key = '-'.join(key_ar)

# original code
# key = raw_input('Please enter the access key: ').strip()
if len(key) == 38:
    key_ar = key.split('-')
    if len(key_ar) == 5:
        if int(key_ar[0].encode('hex'), 16) ==  58559604012647:
            if int(key_ar[1].encode('hex'), 16) == 27697077611219024:
                if int(key_ar[2].encode('hex'), 16) == 28839576914310229:
                    if int(key_ar[3].encode('hex'), 16) == 14469853439423811:
                        if int(key_ar[4].encode('hex'), 16) == 21189029315236706:
                            print key[18] + key[-2] + chr(ord(key[26]) - 1) + key[-2] + '{' + hashlib.md5(key).hexdigest() + '}'
                        else:
                             print 'You access key is not correct! Banned!!'
                    else:
                        print 'You access key is not correct! Banned!!'
                else:
                    print 'You access key is not correct! Banned!!'
            else:
                print 'You access key is not correct! Banned!!'
        else:
            print 'You access key is not correct! Banned!!'
    else:
        print 'You access key is not correct! Banned!!'
else:
    print 'You access key is not correct! Banned!!'