Reverse the string

XM5xpcy4vc5l6oekflqq

Convert Base32 to hex

BB3B778B1CA8BABF388A2AE1

Convert Hex to Base64

uzt3ixyour84iirh

Convert roman numerals to numbers

uzt39your842rh

Looking at the beginning of the string we can see a good decimal to Ascii format. The ending seems different, looks more like Hex. Let’s try to split things up

87 66 67 50 50 79843 33 39 36 64 68

Clearly the prefix is decimal to Ascii and the suffix is Hex to Ascii

WBC22 396dh

Now let’s try to search 79843 to see what comes up. Google tells us it’s the zipcode for Marfa, Texas.

wbc22marfa396dh

Invalid. Marfa also has it’s reversed keyword, Afram. Let’s try that

wbc22afram396dh

114 can be divided by six which could mean RGB Hex colour codes. Split in groups of six and find the colour names

Get the first letter of each colour

fzzeibtwdevtweiniof

In the middle we can see the word dev, the only keyword that would fit is blackdev. That “black” colour should have been after “Wange”

fzzeitwblackdevtweiniof

fzz82blackdev289of