Defcon 21 Badge Challenge Walkthrough Part 3
Floor Puzzles
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Clock Face
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The symbols are Rod Numerals ( https://en.wikipedia.org/wiki/Counting_rods#Rod_numerals ) turned sideways every other digit. When converted to letters reads:
defcon, 21, keyword, orrery
which leads to:
https://www.defcon.org/1o57/dc21/orrery
Skull Puzzle
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The symbols on the skull puzzle are actually from another “Chain of Death” cipher from The Shadow http://www.nku.edu/~christensen/section%205%20symbols.pdf You read it by following the chart and reading symbols in pairs starting with the second symbol.
The message reads:
keyword homodoxian
Which leads to:
https://www.defcon.org/1o57/dc21/homodoxian
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That’s it for part 3. Part 4 has all the website clues.