HSCTF_2017: Quartenary

Category: Crypto Points: 100 Description:

What is the flag? 1310122012111303121113131233130212101303120113021211130013111310122012111302121113101233121212211230123013031300120112031211023211101220122113031303121112321310121112321203121112211232131012111232131012211233123212011230123013211230121112121310120212301201123212230232131012201211121212301201121312211303032213131220132112101233121113031232123312331232121113111303121112021201130312111212123313111302 Hint: If you think you are close but it is not working, try adding a leading zero.

Write-up

We just need to convert it from base-4 to base-10 to base-16 to ASCII. We can use python for this.

$ ./solve.py 
thesewordsareputheretofillspace.Thissentenceintentionallyleftblank.theflagis:whydoesnooneusebasefour

Therefore, the flag is whydoesnooneusebasefour.

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