Marks the Spot

3D*=H1,:U?.l&je6W$Z;1,:U?.l&je6V:H?1,:U?.l&je6V&t)1,:U?.l&je6V(<U=>Eu6.p+P66V’461,:U?.l&je6W$?41,:U?.l&j

Flag Format: CIT{example_flag}

by ronnie

Given Base85 encoded string, the decoded string is:

9JVM2222+22
CQP52222+22
CJX82222+22
CH2J2222+22
CHXPX2X2+X2
CH9P2222+22
CQG72222+22

We can convert the Open Location/Plus Code to coordinates with dCode Plus Code Converter and the coordinates are:

9JVM2222+22 -> 67.0000625, 73.0000625
CQP52222+22 -> 84.0000625, 123.0000625
CJX82222+22 -> 89.0000625, 66.0000625
CH2J2222+22 -> 70.0000625, 52.0000625
CHXPX2X2+X2 -> 89.9999375, 54.0000625
CH9P2222+22 -> 77.0000625, 54.0000625
CQG72222+22 -> 80.0000625, 125.0000625

Noticed that in the coordinates there is 123 and 125 which are the ASCII values for { and } respectively. So i decided to convert the coordinates to ASCII values.

67 73 84 123 89 66 70 52 89 54 77 54 80 125

Then we converted the ASCII values to characters and got the flag.