[wechall challenge] Training: Crypto - Caesar II

message = [0x65,0x0D,0x0D,0x02,0x20,0x08,0x0D,0x00,0x4A,0x20,0x17,0x0D,0x13,0x20,0x11,0x0D,0x0A,0x14,0x03,0x02,0x20,0x0D,0x0C,0x03,0x20,0x0B,0x0D,0x10,0x03,0x20,0x01,0x06,0x7F,0x0A,0x0A,0x03,0x0C,0x05,0x03,0x20,0x07,0x0C,0x20,0x17,0x0D,0x13,0x10,0x20,0x08,0x0D,0x13,0x10,0x0C,0x03,0x17,0x4C,0x20,0x72,0x06,0x07,0x11,0x20,0x0D,0x0C,0x03,0x20,0x15,0x7F,0x11,0x20,0x04,0x7F,0x07,0x10,0x0A,0x17,0x20,0x03,0x7F,0x11,0x17,0x20,0x12,0x0D,0x20,0x01,0x10,0x7F,0x01,0x09,0x4C,0x20,0x75,0x7F,0x11,0x0C,0x45,0x12,0x20,0x07,0x12,0x5D,0x20,0x4F,0x50,0x56,0x20,0x09,0x03,0x17,0x11,0x20,0x07,0x11,0x20,0x7F,0x20,0x0F,0x13,0x07,0x12,0x03,0x20,0x11,0x0B,0x7F,0x0A,0x0A,0x20,0x09,0x03,0x17,0x11,0x0E,0x7F,0x01,0x03,0x4A,0x20,0x11,0x0D,0x20,0x07,0x12,0x20,0x11,0x06,0x0D,0x13,0x0A,0x02,0x0C,0x45,0x12,0x20,0x06,0x7F,0x14,0x03,0x20,0x12,0x7F,0x09,0x03,0x0C,0x20,0x17,0x0D,0x13,0x20,0x12,0x0D,0x0D,0x20,0x0A,0x0D,0x0C,0x05,0x20,0x12,0x0D,0x20,0x02,0x03,0x01,0x10,0x17,0x0E,0x12,0x20,0x12,0x06,0x07,0x11,0x20,0x0B,0x03,0x11,0x11,0x7F,0x05,0x03,0x4C,0x20,0x75,0x03,0x0A,0x0A,0x20,0x02,0x0D,0x0C,0x03,0x4A,0x20,0x17,0x0D,0x13,0x10,0x20,0x11,0x0D,0x0A,0x13,0x12,0x07,0x0D,0x0C,0x20,0x07,0x11,0x20,0x02,0x02,0x7F,0x02,0x0A,0x02,0x11,0x00,0x03,0x00,0x0C,0x07,0x4C]

message = "".join([chr(i) for i in message])

for j in range(128):
    flag = ""
    for i in range(len(message)):
        if ord(message[i])+j>127:
            flag += chr(ord(message[i])+j-128)
        else:
            flag += chr(ord(message[i])+j)
    print "Key = " + str(j) + ", Flag = " + flag

Key = 98, Flag = Goodjob,yousolvedonemorechallengeinyourjourney.Thisonewasfairlyeasytocrack.Wasn'tit?128keysisaquitesmallkeyspace,soitshouldn'thavetakenyoutoolongtodecryptthismessage.Welldone,yoursolutionisddadldsbebni.