A Dangerous Path

There were 3 codes found in the A Dangerous Path post on the Investigation Blog.

[1] 9170910231408070803030403150917020508061
[2] uy2fpy1lpc7xzx6ylyj2jpvjppry72fqlplqs
[3] ODJz20gBHvxCLHJBIPgn

Code #1

Observations

There is a significant number of 0‘s and 1‘s in the code, looking at pairs of numbers:

91 70 91 02 31 40 80 70 80 30 30 40 31 50 91 70 20 50 80 61

The 0‘s and 1‘s are mostly found in the second digit.

Code #2

Observations

There is a random assortment of 37 letters and numbers, 37 is prime so transposition won’t work easily. Reencoding the code may give us more favourable lengths.

Encoding all characters to Morse code:

..- -.-- ..--- ..-. .--. -.-- .---- .-.. .--. -.-. --... -..- --.. -..- -.... -.-- .-.. -.-- .--- ..--- .--- .--. ...- .--- .--. .--. .-. -.-- --... ..--- ..-. --.- .-.. .--. .-.. --.- ...

Shows us there are 152 dits and dahs

Code #3

Observation

The characters in the code look like they are in Base64 encoding, but when passed through a Base64 decoder, there are a lot of non-ASCII characters.

[hint]

Having a M, N, or O is typically a clue that a decoded Base64 starts with a number.

[/hint]