Secret Code

Personal Rating: Medium

We have an interesting image (on the right) and I found a helpful legend (on the left), a parser and sal files, which are meant to be opened with Saleae Logic 2.

You had to connect the right channels to the right segments of the digital display and find the signals on these channels using the Logic2 program. Then you could decode what the display would show, one segment and one iteration at the time. I did this half, manually, which was really tedious. I wrote down the values from the Logic2 Program manually and then wrote this Python parser:

secondsvalues=["01011101","11111111","10111111","11111001","01011101","01011101","11110110","01101100","00101100","11011011","01101100","11101111","11111100","11101111","10101111","01101100","01101100","11111100","11111100","11111100","10111100","11110110","11111001","01110011","11111011","11111100","10111100","11111100","11101111","11111011","11011110","11111100","10111100","11111100","11111100","11111001","11111001","01110011","00110011","11111011","11111011","11111100","11110110","11111100","10111100","11101111","11111011","11011110","11111001","01110011","00110011","01101100","01101100","11111100","01001100","11111100","10111100","01101100","11111011","11111111","11111100","01001100","00001100","11111011","11110011","01011101","11101111","11110110","10110110","01001100","11110110","11111100","01101100","11011110","10011110"]
hexvalues = []

for i in secondsvalues:
    if (i == "01001100"):
        hexvalues.append("1")
    if (i == "11110110"):
        hexvalues.append("2")
    if (i == "11111100"):
        hexvalues.append("3")
    if (i == "01011101"):
        hexvalues.append("4")
    if (i == "11111001"):
        hexvalues.append("5")
    if (i == "11111011"):
        hexvalues.append("6")
    if (i == "01101100"):
        hexvalues.append("7")
    if (i == "11111111"):
        hexvalues.append("8")
    if (i == "11111101"):
        hexvalues.append("9")
    if (i == "11101111"):
        hexvalues.append("0")
    if (i == "01111111"):
        hexvalues.append("a")
    if (i == "11011011"):
        hexvalues.append("b")
    if (i == "11100011"):
        hexvalues.append("c")
    if (i == "11011110"):
        hexvalues.append("d")
    if (i == "11110011"):
        hexvalues.append("e")
    if (i == "01110011"):
        hexvalues.append("f")

hexresult = ""

for i in hexvalues:
    hexresult += i

result = bytearray.fromhex(hexresult).decode()
print(result)