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ACSAC 2025 CTF Challenges

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0/10 challenges completed

Welcome to the second-ever ACSAC Capture the Flag (CTF), celebrating the 41st year of ACSAC. This year’s narrative follows the legendary voyager Hawaiʻiloa, who is said to have discovered the Hawaiian Islands by navigating the stars. Help Hawaiʻiloa across the Pacific toward Hawaiʻi, one constellation at a time.

Start with the starter challenge (the compass).

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Challenge Title

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500

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Click a constellation to view its challenge.

Background halulu unsolved halulu solved halulu medium hokupaa unsolved hokupaa solved hokupaa medium iwakelii unsolved iwakelii solved iwakelii medium ka-heihei-ona-keiki unsolved ka-heihei-ona-keiki solved ka-heihei-ona-keiki medium ka-lupe-o-kawelo unsolved ka-lupe-o-kawelo solved ka-lupe-o-kawelo medium ka-moi unsolved ka-moi solved ka-moi medium kaahupahau unsolved kaahupahau solved kaahupahau medium kukalaniehu unsolved kukalaniehu solved kukalaniehu medium manaiakalani unsolved manaiakalani solved manaiakalani medium compass unsolved compass solved compass medium

CTF created by:

  • Zion Leonahenahe Basque, Arizona State University, CTF Ali'i
  • Will Rosenberg, Arizona State University
  • Wil Gibbs, Arizona State University
  • Siddharth Mishra, Arizona State University
  • Pulkit Singh Singaria, Arizona State University
  • Pratham Gupta, Arizona State University
  • Nathan Wong, University of Hawaiʻi at Mānoa
  • Hulin Wang, Arizona State University
  • Ethan Morrell, University of Hawaiʻi at Mānoa
  • Caden Sounart, Arizona State University
  • Ahmad Samara, Arizona State University

Challenges

1
Pānānā
2
Hōkūpaʻa - postmortem
3
Halulu
4
Ka hei hei o nā keiki
5
Iwakeli`i
6
Kūkalaniʻehu - doubleblindside
7
Ka Mō'ī
8
Ka lupe o kawelo
9
Mānaiakalani
10
Kaʻahupāhau - Stargazer