Challenge your limits

A cybersecurity platform for curious minds.

Challenges

Notice

#TitleAuthorDateViews

1 New Sub-Administrators Join CodeShell.krCodeShell 2026-09-22 00:52 17 2 CodeShell.kr Round 1 Winner: AACDAICodeShell 2026-09-21 10:23 60 3 CodeShell.kr has been re-registered on WeChall.netCodeShell 2026-09-19 10:16 259

Recent challenges

#TitleCategoryDifficultyPoints

1 Fried EggSTEGANO 1Round Winner6400 2 Fractured LoomREVERSING INFINITY3200 3 PalimpsestMISC INFINITY3200 4 ParallaxSTEGANO INFINITY3200 5 InvolutionREVERSING DEVIL1600 6 PalindromeCRYPTO INFINITY3200