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Challenge Category Author Solved Score
1. At the end Cryptography unknown 5 990
2. Broken Cert Revenge Cryptography Tulgaaaa 5 990
3. Fancy text Cryptography Superior 6 985
4. Collision finder Cryptography Superior 7 979
5. Prime or not Prime Cryptography Superior 7 979
6. RandCrack Cryptography Superior 7 979
7. Clash of MD5 Cryptography Superior 8 972
8. Shuffle Cryptography Khulegu 8 972
9. Unknown seed Cryptography Superior 9 964
10. 16 bytes: 512-bit primes Cryptography Superior 10 955
11. Encryption service 3 Cryptography Superior 13 922
12. Scambet Cryptography Superior 13 922
13. Encryption service 2 Cryptography Superior 14 909
14. Verification: Revolutions Cryptography Superior 14 909
15. 96 Cryptography ci0 15 895
16. Symbols Cryptography zjzoloo 15 895
17. The First Half: Revolutions Cryptography Superior 15 895
18. 16 bytes: 128-bit primes Cryptography Superior 16 880
19. Impossible to decrypt Cryptography Superior 16 880
20. Broken Cert Cryptography Tulgaaaa 17 864
21. Encryption service 1 Cryptography Superior 17 864
22. NoobSaiBotSSuper Cryptography w01f 17 864
23. Handshake Cryptography Flame 18 847
24. Weakryption Cryptography Flame 19 829
25. Khan's Factorization Raid Cryptography zjzoloo 20 810
26. Nomad's Key Cryptography zjzoloo 20 810
27. Oracle is here Cryptography Tulgaaaa 20 810
28. Kano Cryptography unknown 21 790
29. 16 bytes: 256-bit primes Cryptography Superior 22 769
30. Horde's Base Cryptography zjzoloo 22 769
31. Look Like Long Cryptography Tulgaaaa 22 769
32. Nature Cryptography Bilgee 23 747
33. Verification: Reloaded Cryptography Superior 23 747
34. Шүлэг 2025 Cryptography dorjoos 23 747
35. Finite Steppe Cryptography zjzoloo 24 724
36. Italy Cryptography unknown 24 724
37. MATHrix Cryptography zjzoloo 24 724
38. Modular encryption reloaded Cryptography Superior 24 724
39. The Scribe's Little Oopsie Cryptography zjzoloo 24 724
40. Weak Digital Signature Cryptography Flame 24 724
41. Урт тоо Cryptography Uzi 24 724
42. Hash Game Cryptography Saruul 25 700
43. Weak Mac Cryptography unknown 25 700
44. Hard RSA Cryptography Flame 26 675
45. Nameless Cryptography unknown 26 675
46. Pheonix Cryptography Flame 27 649
47. r00t Cryptography unknown 28 622
48. Brainrot Cryptography unknown 30 565
49. Encryption Standard Advanced Cryptography Superior 30 565
50. Embrace the randomness Cryptography Superior 31 535
51. Kindergarten Cryptography zjzoloo 31 535
52. Reality Security Access Cryptography zjzoloo 31 535
53. IDK Cryptography unknown 32 504
54. sumPrimes revenge Cryptography Tulgaaaa 32 504
55. EncodeManiac! Cryptography unknown 33 472
56. First Blood: Reloaded Cryptography Superior 33 472
57. Primal Cryptography Flame 33 472
58. random Cryptography unknown 34 439
59. The First Half: Reloaded Cryptography Superior 34 439
60. Enigmatic Cryptography Uzi 35 405
61. Favorite number Cryptography Superior 35 405
62. roxy-2 Cryptography unknown 35 405
63. Verification Cryptography Superior 35 405
64. Just encryption Cryptography unknown 36 370
65. RSA Cryptography TheEyeLid 36 370
66. Шаар Cryptography unknown 36 370
67. 1-р шатны дараа Cryptography zjzoloo 37 334
68. New crypto Cryptography Ds3c 37 334
69. Seed of future Cryptography unknown 37 334
70. are you admin i think nahh Cryptography Tulgaaaa 38 297
71. Holy Letter Cryptography zjzoloo 38 297
72. New -> Old Cryptography dorjoos 38 297
73. roxy-1 Cryptography unknown 38 297
74. Warmup 2024 Cryptography unknown 38 297
75. Scan me Cryptography unknown 43 97
76. Checker Cryptography unknown 44 54
77. Cybercook Cryptography Uzi 44 54
78. Ticket Generator Cryptography Bilgee 44 54
79. Crypto analysis Cryptography unknown 46 10
80. Modular encryption Cryptography Tulgaaaa 46 10
81. The First Half Cryptography Superior 47 10
82. Alphabet Cryptography unknown 48 10
83. Decrypt me: 6 Cryptography unknown 48 10
84. Number2Text Cryptography unknown 49 10
85. XOR without X Cryptography Superior 49 10
86. RSA tutorial Cryptography Superior 50 10
87. Унш унш бас дахин унш Cryptography unknown 50 10
88. 4r3 Y0u Bl1nd Cryptography Uzi 51 10
89. Nightfall Cryptography unknown 51 10
90. unknown key but known Cryptography Tulgaaaa 51 10
91. dlugi Cryptography unknown 52 10
92. Really Suspicious Algorithm Cryptography Superior 55 10
93. Advanced Encryption Standard Cryptography Superior 56 10
94. Complete random key Cryptography Superior 58 10
95. Dance Dance Dance Cryptography unknown 58 10
96. xo | rorororo Cryptography w01f 59 10
97. Бие халаалт Cryptography Superior 59 10
98. Crypto Sensei Cryptography unknown 64 10
99. sumPrimes Cryptography Tulgaaaa 66 10
100. Alice and Bob Part 2 Cryptography Ds3c 67 10
101. Decode me: 2 Cryptography unknown 67 10
102. 中文余数 Cryptography Tulgaaaa 67 10
103. Baby crypto Cryptography Flame 69 10
104. Юлий Цезарийн төгсгөл Cryptography w01f 70 10
105. Рийл крипто Cryptography w01f 72 10
106. Morse Cryptography unknown 73 10
107. Decrypt me: 7 Cryptography unknown 79 10
108. Decrypt me: 2 Cryptography unknown 92 10
109. Decrypt me: 8 Cryptography unknown 93 10
110. 2D Cryptography unknown 94 10
111. Cookbook Cryptography unknown 94 10
112. 1_26 Cryptography unknown 96 10
113. Certification Cryptography Uzi 99 10
114. Wakanda үүрд Cryptography Bilgee 106 10
115. Simple Puzzle Cryptography unknown 109 10
116. Decode me: 8 Cryptography unknown 111 10
117. Easy RSA Cryptography Xyptonize 112 10
118. Нууц зурвас Cryptography Superior 114 10
119. Шүлэг Cryptography now.sh 120 10
120. 13-р зуун 2018 Cryptography Ds3c 127 10
121. Old but gold Cryptography unknown 130 10
122. Decode me: 9 Cryptography unknown 132 10
123. Shiree Cryptography olsujabu 150 10
124. Decrypt me: 5 Cryptography unknown 155 10
125. Ромын байлдан дагуулагч Cryptography unknown 173 10
126. Бие халаалт 2018 Cryptography Ds3c 189 10
127. 13-р зуун Cryptography unknown 190 10
128. Decode me: 5 Cryptography unknown 192 10
129. Decode me: 4 Cryptography unknown 196 10
130. roshan's banner Cryptography Tulgaaaa 196 10
131. Decrypt me: 1 Cryptography unknown 207 10
132. Decode me: 3 Cryptography unknown 212 10
133. Decode me: 1 Cryptography unknown 235 10
134. Emojis Cryptography Uzi 239 10
135. Smells like 10 Spirit Cryptography unknown 259 10
136. First blood Cryptography Flame 293 10