Passcode Decoding Walkthrough #013

1

On September 5, there were documents released about a plan to take down Devra Bogdanovich. Inside it, we uncover 3 codes.

Once again, all passcodes will be in the format:

[2-9][a-z][a-z][a-z][2-9]keyword[a-z][2-9][a-z][2-9][a-z]

Page 1 (Difficulty: N/A)

Smear1

8tb7sculptv923z

Page 2

Smear2

Code 1 (Difficulty: 1/5)

m3j5enlxelx6asu7

The code appears to be in the right passcode format in reverse:

7usa6xlexlne5j3m

Trying the usual “first-steps” (atbash/caesar) reveals atbash is the right cipher:

7fhz6covcomv5q3n

This passcode was actually in September 4th’s Ingress Report

Code 2 (Difficulty: 4/5)

The passcode is along the bottom edge starting from the left of the page in braille, transcribing it:

cghlnlkpmotrsvxwwyybdbwffegheieo

Examining the characters carefully reveal the alphabetical indexes of the characters are slightly increasing as the code progresses, as seen in the chart below:

page2code2

Using vigenere decrypt with abcdefghijklmnopqrstuvwxyz as the key on the code:

cffijgeiefjggijhghgijgaihfggcfaj

All the values seem to be within the a-j range, converting those to 0-9 and pairing up:

25 58 96 48 45 96 68 97 67 68 96 08 75 66 25 09

Each pair needs to be reversed to produce proper decimal values for the range of valid passcode characters:

52 85 69 84 54 69 86 79 76 86 69 80 57 66 52 90
4UET6EVOLVEP9B4Z

About Author

1 Comment

  1. For the passcode of the page1, you said as introduction the format is : [2-9][a-z][a-z][a-z][2-9]keyword[a-z][2-9][a-z][2-9][a-z] but the passcode solved is : 8tb7sculptv923z (another format like [2-9][a-z][a-z][2-9]keyword[a-z][2-9][2-9][2-9][a-z] …)

Leave a Reply

Passcode Decoding Walkthrough #013

by Jack Truong (SQL) time to read: 1 min
1