Parseltongue Writeup

first get python code from bytecode using uncompyle6

    #!/usr/bin/env python3
    import Crypto.Util.number as l2b
    import random
    '''
        sszz -> a_list
        zzss -> some_bytes
    '''
    a_list = [
     'aposlogahs', 'apsle', 'Sine', 'aʃe', 'bei∫ed', 'tuif', 'Kura', 'Vera', 'pard', 'pardshesl', 'bo∫', 'Gara', 'vinth', 'Pelʃis', 'keilsing', 'khair', 'tikni', 'Bana', 'Slehara', 'koukh', 'kups', 'dai', 'Andi', 'dorʃe', 'doʃe', 'sloʃe', 'kaʃe', 'Sarna', 'Suu', 'giʃe', 'Gorna', 'ass-girou', 'dros', 'feslure', 'hasli', 'riʃan', 'fraeslis', 'vris', 'gatsi', 'runʃe', 'Tira', 'hishe', 'einʃe', 'hesleuf', 'Firna', 'Baʃ', 'ʃem', 'ai', 'ine', 'dinʃe', 'Negei', 'slanp', 'ʃena', 'sliʃe', 'dati', 'slifai', 'Kuine', 'Ha', 'nisl', 'ʃe', 'Sobne', 'bna', 'Sora', 'ovith', 'houk', 'parknent', 'fasar', 'nesha', 'praughs', 'Pura', 'ʃine', 'ʃane', 'gisan', 'rai∫e', 'kata', 'Ara', 'Nigi', 'akaʃe', 'rashe', 'slan', 'Derne', 'Tina', 'snart', 'gariʃe', 'kerashe', 'stabsle', 'Fasi', 'Peina', 'Tasi', 'Sekusi', 'Harne', 'kapi', 'Athne', 'vaʃe', 'asl', 'ʃik', 'agiro', 'vei', 'Asuna', 'Teʃ', 'Fiʃ', 'Doʃ', 'ʃira', 'Haʃ', 'Vuʃ', 'vindovth', 'Bira', 'Sa', 'Slu', 'ou', 'iangsteur'
    ]
    some_bytes = b'\x07\x1c\x0e\x14\x17\n\x06\x03\x0cJ\x00@G\x0e\x017X\x0b\x04W\xf8\xb5\x03P\x06\x0f\x80\xea\x9b\x00\x05A\x16\\\x00.\x17\x0f'
    s = False
    z = True
    ss = s & z  # False AND True -> always False
    # abs()      -> Returns absolute value
    # abs(True)  -> 1
    # abs(False) -> 0
    z = abs(ss) - abs(z) # -1
    zz = ss | z          # False OR -1 = -1
    z = zz - z - z       # -1 - (-1) - (-1) = 1
    zz = z | z           # 1 OR 1 = 1
    z = zz << zz         # 1 LEFT SHIFT 1 = 2
    s = ss >> ss         # False RIGHT SHIFT False = 0
    sz = s << z          # 0 LEFT SHIFT 2 = 0
    zs = z << s          # 2 LEFT SHIFT 0 = 2
    z = zs - sz          # 2 - 0 = 2
    # Values at this point
    # z  = 2
    # zs = 2
    # sz = 0
    # s  = 0
    # zz = 1
    # ss = False [unchanged]
    ss = str(z).replace(str(zs), str(ss).replace(str(ss), str(z).replace(str(z), '')))
    # '2'.replace('2', 'False'.replace('False', '2'.replace('2', '') ))
    # '2'.replace('2', 'False'.replace('False', ''))
    # '2'.replace('2', '')
    # ss = ''
    sss = bytes(ss.join(a_list), 'utf-8')
    zzz = bytes([_a ^ _b for _a, _b in zip(sss, some_bytes)])
    ##### JACKPOT #####
    print(zzz.decode())
    ###################
    ssszzz = bytes([_a ^ _b for _a, _b in zip(zzz, some_bytes)])
    sss += b'S'
    ssss = []
    ss = sss[:len(sss) // 2]
    zz = sss[len(sss) // 2:]
    for s in range(len(ss)):
        ssss.append(ss[s] ^ zz[s])
    else:
        if 5 == 1:
            print(' '.join([random.choice(a_list).upper() for _ in range(random.randrange(5, 10))]))
        else:
            print(' '.join([random.choice(a_list).upper() for _ in range(random.randrange(5, 10))]))