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Challenge Category Author Solved Score
1. At the end Cryptography unknown 3 997
2. Shuffle Cryptography Khulegu 3 997
3. Broken Cert Revenge Cryptography Tulgaaaa 4 994
4. 16 bytes: 512-bit primes Cryptography Superior 6 985
5. Encryption service 3 Cryptography Superior 7 979
6. Scambet Cryptography Superior 8 972
7. Verification: Revolutions Cryptography Superior 8 972
8. Encryption service 1 Cryptography Superior 9 964
9. Encryption service 2 Cryptography Superior 9 964
10. Impossible to decrypt Cryptography Superior 9 964
11. Khan's Factorization Raid Cryptography zjzoloo 9 964
12. The First Half: Revolutions Cryptography Superior 9 964
13. 96 Cryptography ci0 11 945
14. Broken Cert Cryptography Tulgaaaa 11 945
15. Finite Steppe Cryptography zjzoloo 11 945
16. Handshake Cryptography Flame 11 945
17. Symbols Cryptography zjzoloo 11 945
18. Weakryption Cryptography Flame 11 945
19. 16 bytes: 128-bit primes Cryptography Superior 12 934
20. Look Like Long Cryptography Tulgaaaa 12 934
21. MATHrix Cryptography zjzoloo 12 934
22. Nomad's Key Cryptography zjzoloo 12 934
23. The Scribe's Little Oopsie Cryptography zjzoloo 12 934
24. 16 bytes: 256-bit primes Cryptography Superior 14 909
25. Horde's Base Cryptography zjzoloo 15 895
26. NoobSaiBotSSuper Cryptography w01f 15 895
27. Oracle is here Cryptography Tulgaaaa 15 895
28. Weak Digital Signature Cryptography Flame 15 895
29. Weak Mac Cryptography unknown 15 895
30. Урт тоо Cryptography Uzi 15 895
31. Шүлэг 2025 Cryptography dorjoos 16 880
32. Nameless Cryptography unknown 18 847
33. Verification: Reloaded Cryptography Superior 18 847
34. Brainrot Cryptography unknown 19 829
35. Hard RSA Cryptography Flame 19 829
36. Kano Cryptography unknown 19 829
37. Modular encryption reloaded Cryptography Superior 19 829
38. Nature Cryptography Bilgee 19 829
39. Encryption Standard Advanced Cryptography Superior 20 810
40. Italy Cryptography unknown 20 810
41. Pheonix Cryptography Flame 20 810
42. Hash Game Cryptography Saruul 21 790
43. Embrace the randomness Cryptography Superior 22 769
44. Enigmatic Cryptography Uzi 22 769
45. r00t Cryptography unknown 22 769
46. Just encryption Cryptography unknown 24 724
47. Kindergarten Cryptography zjzoloo 24 724
48. New -> Old Cryptography dorjoos 25 700
49. Reality Security Access Cryptography zjzoloo 25 700
50. Favorite number Cryptography Superior 26 675
51. are you admin i think nahh Cryptography Tulgaaaa 27 649
52. The First Half: Reloaded Cryptography Superior 27 649
53. First Blood: Reloaded Cryptography Superior 28 622
54. RSA Cryptography TheEyeLid 28 622
55. sumPrimes revenge Cryptography Tulgaaaa 28 622
56. IDK Cryptography unknown 29 594
57. Verification Cryptography Superior 29 594
58. EncodeManiac! Cryptography unknown 30 565
59. Primal Cryptography Flame 30 565
60. random Cryptography unknown 30 565
61. roxy-2 Cryptography unknown 30 565
62. Шаар Cryptography unknown 31 535
63. 1-р шатны дараа Cryptography zjzoloo 34 439
64. New crypto Cryptography Ds3c 34 439
65. roxy-1 Cryptography unknown 34 439
66. Seed of future Cryptography unknown 34 439
67. Warmup 2024 Cryptography unknown 36 370
68. Alphabet Cryptography unknown 37 334
69. Checker Cryptography unknown 37 334
70. Crypto analysis Cryptography unknown 37 334
71. Cybercook Cryptography Uzi 37 334
72. Holy Letter Cryptography zjzoloo 37 334
73. Scan me Cryptography unknown 40 220
74. The First Half Cryptography Superior 41 180
75. Ticket Generator Cryptography Bilgee 41 180
76. Modular encryption Cryptography Tulgaaaa 42 139
77. Number2Text Cryptography unknown 44 54
78. Decrypt me: 6 Cryptography unknown 45 10
79. unknown key but known Cryptography Tulgaaaa 45 10
80. Nightfall Cryptography unknown 46 10
81. RSA tutorial Cryptography Superior 46 10
82. XOR without X Cryptography Superior 46 10
83. Унш унш бас дахин унш Cryptography unknown 47 10
84. 4r3 Y0u Bl1nd Cryptography Uzi 49 10
85. dlugi Cryptography unknown 49 10
86. Advanced Encryption Standard Cryptography Superior 51 10
87. Really Suspicious Algorithm Cryptography Superior 51 10
88. Dance Dance Dance Cryptography unknown 52 10
89. Complete random key Cryptography Superior 53 10
90. xo | rorororo Cryptography w01f 55 10
91. Бие халаалт Cryptography Superior 56 10
92. Crypto Sensei Cryptography unknown 57 10
93. Alice and Bob Part 2 Cryptography Ds3c 59 10
94. Юлий Цезарийн төгсгөл Cryptography w01f 60 10
95. Рийл крипто Cryptography w01f 61 10
96. Decode me: 2 Cryptography unknown 62 10
97. sumPrimes Cryptography Tulgaaaa 62 10
98. 中文余数 Cryptography Tulgaaaa 62 10
99. Baby crypto Cryptography Flame 63 10
100. Morse Cryptography unknown 65 10
101. Decrypt me: 7 Cryptography unknown 70 10
102. Cookbook Cryptography unknown 77 10
103. Decrypt me: 2 Cryptography unknown 77 10
104. 1_26 Cryptography unknown 80 10
105. Decrypt me: 8 Cryptography unknown 82 10
106. 2D Cryptography unknown 83 10
107. Certification Cryptography Uzi 86 10
108. Simple Puzzle Cryptography unknown 91 10
109. Wakanda үүрд Cryptography Bilgee 95 10
110. Decode me: 8 Cryptography unknown 97 10
111. Нууц зурвас Cryptography Superior 99 10
112. Easy RSA Cryptography Xyptonize 101 10
113. 13-р зуун 2018 Cryptography Ds3c 107 10
114. Old but gold Cryptography unknown 109 10
115. Шүлэг Cryptography now.sh 111 10
116. Decode me: 9 Cryptography unknown 117 10
117. Shiree Cryptography olsujabu 133 10
118. Decrypt me: 5 Cryptography unknown 137 10
119. Ромын байлдан дагуулагч Cryptography unknown 149 10
120. Бие халаалт 2018 Cryptography Ds3c 160 10
121. 13-р зуун Cryptography unknown 162 10
122. Decode me: 5 Cryptography unknown 162 10
123. Decode me: 4 Cryptography unknown 166 10
124. roshan's banner Cryptography Tulgaaaa 168 10
125. Decrypt me: 1 Cryptography unknown 173 10
126. Decode me: 3 Cryptography unknown 178 10
127. Decode me: 1 Cryptography unknown 195 10
128. Emojis Cryptography Uzi 204 10
129. Smells like 10 Spirit Cryptography unknown 222 10
130. First blood Cryptography Flame 251 10