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Let’s play ColTris - understand and exploit hash collisions

Maximum numbers of participants: 20. Registration will be done on site.

Workshop providing tools and hands on experience about exploitation of hash collisions and file formats.


  • Hardware: a laptop
  • Software:
    • install hashclash (CUDA not required): download sources and compile or download release binaries
    • a file format manipulation environment: hexadeciaml editor, assembly, scripting … (whatever you are familiar with)
    • clone the corkami/collisions repository
  • Skills: being comfortable working with a hexadecimal editor.



Ange Albertini


Author of Corkami

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