Defcon21 badge challenge
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DEFCON22
html
images
permute
signs
525DSK_02-111?.txt
525DSK_05-100.txt
525DSK_07-001.txt
525DSK_10-010.txt
525DSK_11-110.txt
525DSK_12-101.txt
525DSK_13-000.txt
525DSK_A-011.txt
KEYHOL_02-000.txt
KEYHOL_05-100.txt
KEYHOL_07-001.txt
KEYHOL_10-101.txt
KEYHOL_11-011.txt
KEYHOL_12-111.txt
KEYHOL_13-010.txt
KEYHOL_A-110.txt
README.md
ROTARY_02-110.txt
ROTARY_05-011.txt
ROTARY_07-100.txt
ROTARY_10-111.txt
ROTARY_11-010.txt
ROTARY_12-111.txt
ROTARY_13-101.txt
ROTARY_A-001.txt
SMILEY_02-011.txt
SMILEY_05-010.txt
SMILEY_07-000.txt
SMILEY_10-001.txt
SMILEY_11-101.txt
SMILEY_12-100.txt
SMILEY_13-110.txt
SMILEY_A-111.txt
alphaotp
badge-decoder.py
decode
disk.txt
final.txt
genreadme
keyhol.txt
plaintext.txt
rot.sh
rotary.txt
smiley.txt

README.md

Overview

DEFCON 21 badge hacking. Work in progress.

Details

Also see https://groups.google.com/forum/#!forum/defconbadgepuzzle

On the floor is a cypher for the 1930's novelette "Chain of Death". It reads "KEYWORDHMODOXIAN". Maybe an O is missing. Maybe we screwed it up.

https://www.defcon.org/1o57/dc21/homodoxian/ is a clue.

Another floor puzzle, the sun clock, can be decoded with rod numerals. https://www.defcon.org/1o57/dc21/orrery/ is a clue.

The cyrptogram on the top left of the sign outside the 1057 room reads: HAVE FUN NEED HELP JUST ASK PASSCODE SYZYGY

https://www.defcon.org/1o57/dc21/syzygy/ is a clue.

The symbols are also from "Chain of Death".

Queen cards might include Trinity, Acid burn, and Mouse.

Badges have playing card designs varrying by suit and number. On the back of each card is a string of numbers. These appear to be 2-digit numbers ranging from 01-26 which are ordinals into a mapping of the alphabet. The mapping is either the standard A-Z mapping or ROT-13, seemingly indicated by the suit. At least some of the sentence fragements are from Rush's Tom Sawyer.

Badges also have a 3-digit binary number on the back. Some badges also depict a simple number generator that produces the following sequences.

  +-------+
  v       |
          |
000 (0) --+

001 (1) <-+
100 (4)   |
010 (2)   |
101 (5)   |
110 (6)   |
111 (7)   |
011 (3) --+

e, pi and a circular icon also appear on different suits instead of the circuit. http://en.wikipedia.org/wiki/Euler%27s_identity could connect them.

13-525DSK ROTTHIQTEENPROBABLYISNTRIGHT
07-525DSK BUTTHISISFUNRIGHT
10-525DSK THOUGHHISMINDISNOTFORRENT
 A-525DSK DONTPUTHIMDOWNASARROGANT
05-525DSK HISRESERVEAQUIETDEFENSE
12-525DSK RIDINGOUTTHEDAYSEYENTS
11-525DSK CATCHTHEMISTCATCHTHEMYTH
02-525DSK CATCHTHEMYSTERYCATCHTHEDRIFT
02-KEYHOL THESKYSWI
07-KEYHOL LLCLEARUP
13-KEYHOL NOTINBLAC
11-KEYHOL KANDWHITE
05-KEYHOL BUTSHADEO
10-KEYHOL FTHEBITSH
 A-KEYHOL ELPYOUTUR
12-KEYHOL NTHISKEYX
 A-ROTARY INTHEREALORDERTHE
11-ROTARY FIRSTISTHELASTBEE
05-ROTARY XCLUSIVEORHASITRE
07-ROTARY GISTEREDTHATTAPAT
13-ROTARY ZEROANDONEWILLBEA
02-ROTARY LLTHEFEEDBACKYOUN
10-ROTARY EEDINTHEREALORDER
12-ROTARY THEFIRSTISTHELAST
07-SMILEY ROTTHIRTEENCANBEFUN
10-SMILEY BUTSOMETIMESLEADSASTRAY
05-SMILEY TRYSOMETHINGELSE
02-SMILEY ANDYOUWILLSEE
12-SMILEY THATFINDINGANSWERS
11-SMILEY MAYTAKEYOUDOWN
13-SMILEY PATHSNOTOFTENREPEATED
 A-SMILEY NOTALLWHOWANDERARELOST