Solves

Data for the 50 most recent submitted challenge solves. To read writeups for our challenges, visit Solutions.
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Recent Solves
DateUserChallengeScore
Cryptohacker2026 Finding Flags 2
Theo_GRENET XOR Starter 10
Ralotic You either know, XOR you don't 30
nister Bytes and Big Integers 10
Eiriew Great Snakes 3
Scyberthe XOR Starter 10
euta1000 Greatest Common Divisor 15
Rimsha1997 Point Addition 30
ewhite XOR Starter 10
APJifengc SSH Keys 35
CocococoNun Greatest Common Divisor 15
didwnghks418 Greatest Common Divisor 15
APJifengc CERTainly not 30
Eiriew Finding Flags 2
lhc464 Greatest Common Divisor 15
Akshow XOR Starter 10
urbtoc21 Diffusion through Permutation 30
APJifengc Privacy-Enhanced Mail? 25
I6nat1us_2011 Jack's Birthday Hash 20
enqn0107 Greatest Common Divisor 15
urbtoc21 Confusion through Substitution 25
nister Base64 10
cafekao Greatest Common Divisor 15
Rimsha1997 Point Negation 10
urbtoc21 Round Keys 20
Nhan_LAPTOP Megalomaniac 1 100
urbtoc21 Structure of AES 15
xth_student Adrien's Signs 80
lhc464 You either know, XOR you don't 30
Rimsha1997 Background Reading 5
urbtoc21 Resisting Bruteforce 10
urbtoc21 Keyed Permutations 5
bncybz Hex 5
dXNlcm5hbWU_ Gaussian Reduction 50
didwnghks418 You either know, XOR you don't 30
urbtoc21 Legendre Symbol 35
Rimsha1997 Export-grade 100
Yuu2108 Base64 10
quocnguyenpa JWT Secrets 25
puntacuna You either know, XOR you don't 30
airduck Base64 10
urbtoc21 Quadratic Residues 25
CocococoNun You either know, XOR you don't 30
Dishankov Quadratic Residues 25
urbtoc21 Modular Inverting 25
quocnguyenpa No Way JOSE 20
shurayz JSON in JSON 40
bncybz ASCII 5
urbtoc21 Modular Arithmetic 2 20
Yuu2108 Hex 5

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