CTF.mn
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Challenge Category Author Solved Score
1. At the end Cryptography unknown 3 997
2. Broken Cert Revenge Cryptography Tulgaaaa 4 994
3. 1950 Matrix Miscellaneous zjzoloo 4 994
4. Reflection Miscellaneous unknown 4 994
5. sudoku Pwn myagmartseren 4 994
6. Fcrackzip As A Service Web Superior 4 994
7. flag-3.bmp Forensics Superior 5 990
8. Twister Miscellaneous n01c3 5 990
9. Shuffle Cryptography Khulegu 6 985
10. UMLaa for ULMaa Miscellaneous zjzoloo 6 985
11. 16 bytes: 512-bit primes Cryptography Superior 7 979
12. Encryption service 3 Cryptography Superior 7 979
13. Malware Analysis: The Maniac Forensics Xyptonize 7 979
14. Memhunt Forensics Id3r 7 979
15. Secret Note Forensics Id3r 7 979
16. Scramble Miscellaneous unknown 7 979
17. Scambet Cryptography Superior 8 972
18. Verification: Revolutions Cryptography Superior 8 972
19. flag-2.png Forensics Superior 8 972
20. Nice to meet you Pwn Superior 8 972
21. Shopthing Web Khulegu 8 972
22. Encryption service 2 Cryptography Superior 9 964
23. Bus 2 Forensics Id3r 9 964
24. Find me Forensics unknown 9 964
25. Linux MemHunt: Flag 1 Forensics Id3r 9 964
26. Linux MemHunt: Flag 2 Forensics Id3r 9 964
27. The Great Exfiltration of the Steppe Forensics xyptonize 9 964
28. JPEG Killer Forensics reamb 10 955
29. xGRAPHy Miscellaneous Tulgaaaa 10 955
30. Temporary data Pwn Myagmartseren 10 955
31. em-esrever Reverse Engineering ByamB4 10 955
32. 96 Cryptography ci0 11 945
33. Encryption service 1 Cryptography Superior 11 945
34. Handshake Cryptography Flame 11 945
35. Impossible to decrypt Cryptography Superior 11 945
36. Symbols Cryptography zjzoloo 11 945
37. Need help Miscellaneous unknown 11 945
38. Арга билиг Miscellaneous unknown 11 945
39. c4 Reverse Engineering ByamB4 11 945
40. Faster Rocket Reverse Engineering ByamB4 11 945
41. Password Reverse Engineering unknown 11 945
42. Stego 101 Steganography TheEyeLid 11 945
43. Broken Cert Cryptography Tulgaaaa 12 934
44. Khan's Factorization Raid Cryptography zjzoloo 12 934
45. Nomad's Key Cryptography zjzoloo 12 934
46. The First Half: Revolutions Cryptography Superior 12 934
47. Weakryption Cryptography Flame 12 934
48. Flag Crypto Forensics unknown 12 934
49. The Hidden Gerege Forensics xyptonize 12 934
50. Hid2 Miscellaneous zjzoloo 12 934
51. Remnant of Cicada Miscellaneous Saruul 12 934
52. Simple Binary Miscellaneous unknown 12 934
53. Hello world Pwn Myagmartseren 12 934
54. Go Lola Go Reverse Engineering unknown 12 934
55. vaultkey Reverse Engineering unknown 12 934
56. The Silent Post Steganography zjzoloo 12 934
57. 16 bytes: 128-bit primes Cryptography Superior 13 922
58. Finite Steppe Cryptography zjzoloo 13 922
59. Look Like Long Cryptography Tulgaaaa 13 922
60. flag-1.jpg Forensics Superior 13 922
61. Unknown dump: Flag 2 Forensics Enkul 13 922
62. Find the correct flag Miscellaneous unknown 13 922
63. PixelArt Miscellaneous Uzi 13 922
64. Encryption tool Reverse Engineering Superior 13 922
65. Seed of Greatness: ELF Reverse Engineering Superior 13 922
66. Seed of Greatness: pyc Reverse Engineering Superior 13 922
67. The Scribe's Little Oopsie Cryptography zjzoloo 14 909
68. Cicada 3301 Forensics fg0x0 14 909
69. Malware Analysis: Lucky Seven Forensics Xyptonize 14 909
70. Obfuscare Forensics fg0x0 14 909
71. 100 triangles Miscellaneous unknown 14 909
72. Pid Pad Miscellaneous unknown 14 909
73. Feedback for debug Pwn Superior 14 909
74. stack format Pwn myagmartseren 14 909
75. 7 Seconds to Glory Reverse Engineering fg0x0 14 909
76. keygen Reverse Engineering jur 14 909
77. The Wisdom of the Eternal Blue Sky Reverse Engineering bekkaze 14 909
78. MATHrix Cryptography zjzoloo 15 895
79. NoobSaiBotSSuper Cryptography w01f 15 895
80. Find the flag Forensics unknown 15 895
81. St3g4N0 Forensics Id3r 15 895
82. Echo Pwn unknown 15 895
83. Unknown execution Pwn Superior 15 895
84. Bad boy Reverse Engineering ByamB4 15 895
85. base or Reverse Engineering myagmartseren 15 895
86. Compressor Reverse Engineering ByamB4 15 895
87. Vaccine Reverse Engineering unknown 15 895
88. You know rust Reverse Engineering unknown 15 895
89. Legend Crypto Web unknown 15 895
90. 16 bytes: 256-bit primes Cryptography Superior 16 880
91. Horde's Base Cryptography zjzoloo 16 880
92. Oracle is here Cryptography Tulgaaaa 16 880
93. Weird message Forensics unknown 16 880
94. writer Pwn myagmartseren 16 880
95. 2FA - Hard Reverse Engineering fg0x0 16 880
96. 2much Reverse Engineering ByamB4 16 880
97. complicator Reverse Engineering ByamB4 16 880
98. Mexico Reverse Engineering unknown 16 880
99. Space station Reverse Engineering ByamB4 16 880
100. Strip Reverse Engineering n01c3 16 880
101. Урт тоо Cryptography Uzi 17 864
102. give-me-everything Forensics naiame 17 864
103. Leaked Forensics unknown 17 864
104. Sorry Forensics unknown 17 864
105. Nameless Cryptography unknown 18 847
106. Weak Digital Signature Cryptography Flame 18 847
107. Weak Mac Cryptography unknown 18 847
108. Шүлэг 2025 Cryptography dorjoos 18 847
109. Baby Forensic Forensics unknown 18 847
110. Cheater: Flag 4 Forensics Xyptonize 18 847
111. It's totally readable Forensics unknown 18 847
112. MemAnalyze-1 Forensics Id3r 18 847
113. Go winner Pwn myagmartseren 18 847
114. Indonesia Reverse Engineering unknown 18 847
115. Just Wait Me Reverse Engineering ByamB4 18 847
116. R4B B1T Reverse Engineering zjzoloo 18 847
117. Cryptolink Web Flame 18 847
118. Trinity's Hidden Door Web unknown 18 847
119. Kano Cryptography unknown 19 829
120. Nature Cryptography Bilgee 19 829
121. Verification: Reloaded Cryptography Superior 19 829
122. Decode Miscellaneous Ds3c 19 829
123. Secure Miscellaneous unknown 19 829
124. Flag for kindness Pwn Superior 19 829
125. Challenge 2 Reverse Engineering unknown 19 829
126. Compose Your Flag: Flag 2 Reverse Engineering Flame 19 829
127. sxor Reverse Engineering expletive 19 829
128. WASM in da house Reverse Engineering Flame 19 829
129. Neon Breach Web Bekkaze 19 829
130. Pickle Web unknown 19 829
131. Yoru Web Flame 19 829
132. Hard RSA Cryptography Flame 20 810
133. Modular encryption reloaded Cryptography Superior 20 810
134. Bus Forensics Id3r 20 810
135. Cheater: Flag 3 Forensics Xyptonize 20 810
136. Secret SeSAMe Noodles Forensics fg0x0 20 810
137. Нүүрээ будах нь төгс хамгаалалт биш Forensics unknown 20 810
138. PyJail Miscellaneous unknown 20 810
139. Biter Reverse Engineering ByamB4 20 810
140. Encryptor Reverse Engineering Bekkaze 20 810
141. Neo Reverse Engineering zjzoloo 20 810
142. Seed of Greatness: class Reverse Engineering Superior 20 810
143. Lil Pump Web unknown 20 810
144. Brainrot Cryptography unknown 21 790
145. Italy Cryptography unknown 21 790
146. Pheonix Cryptography Flame 21 790
147. Data Breach Forensics w01f 21 790
148. DigMe: Flag 2 Forensics unknown 21 790
149. Unknown dump: Flag 1 Forensics Enkul 21 790
150. exam Pwn myagmartseren 21 790
151. Least Significant Bit Steganography reamb 21 790
152. Encryption Standard Advanced Cryptography Superior 22 769
153. Hash Game Cryptography Saruul 22 769
154. EZ Forensic Forensics Id3r 22 769
155. Klaun Forensics Uzi 22 769
156. Weird images Forensics ByamB4 22 769
157. 2FA - Easy Reverse Engineering fg0x0 22 769
158. Optical Illusion Steganography khangal 22 769
159. Pixel Quest Web uug4na 22 769
160. Vaccine API Web unknown 22 769
161. r00t Cryptography unknown 23 747
162. Burglar: Flag 2 Forensics Xyptonize 23 747
163. Edit me 2 Forensics w01f 23 747
164. Kinder Surprise Forensics unknown 23 747
165. Beyond Limit Pwn myagmartseren 23 747
166. Sentry ward Pwn Bekkaze 23 747
167. To infinity Steganography unknown 23 747
168. Spooky Scary Web Web Naba 23 747
169. Embrace the randomness Cryptography Superior 24 724
170. Enigmatic Cryptography Uzi 24 724
171. Heavy One Forensics unknown 24 724
172. M4th Forensics Id3r 24 724
173. MemAnalyze-2 Forensics Id3r 24 724
174. Egypt Steganography unknown 24 724
175. New -> Old Cryptography dorjoos 25 700
176. Guess a password Forensics unknown 25 700
177. Headshot Forensics fg0x0 25 700
178. Бие халаалт 2024 Forensics unknown 25 700
179. Гяндан Miscellaneous Bilgee 25 700
180. Not used Pwn reamb 25 700
181. API Web unknown 25 700
182. Troy Web Tsolmon 25 700
183. Just encryption Cryptography unknown 26 675
184. Kindergarten Cryptography zjzoloo 26 675
185. Reality Security Access Cryptography zjzoloo 26 675
186. Super Secure Banking App Forensics fg0x0 26 675
187. My little NFT OSINT Flame 26 675
188. Big L or ll Reverse Engineering zjzoloo 26 675
189. Reverse my Reverse Engineering ByamB4 26 675
190. Simpler Reverse Engineering ByamB4 26 675
191. So easy rev Reverse Engineering unknown 26 675
192. Regex Based Firewall Web Superior 26 675
193. Void Web uug4na 26 675
194. Favorite number Cryptography Superior 27 649
195. reducted lvl Forensics unknown 27 649
196. Од түүцгээе Forensics unknown 27 649
197. 18 толгойт Reverse Engineering unknown 27 649
198. Jax Reverse Engineering jur 27 649
199. runme Reverse Engineering ByamB4 27 649
200. New Era Steganography w01f 27 649
201. Proto Web Khangal 27 649
202. are you admin i think nahh Cryptography Tulgaaaa 28 622
203. RSA Cryptography TheEyeLid 28 622
204. sumPrimes revenge Cryptography Tulgaaaa 28 622
205. Burglar: Flag 1 Forensics Xyptonize 28 622
206. DigMe: Flag 1 Forensics unknown 28 622
207. Twins Miscellaneous unknown 28 622
208. Shellcode Pwn reamb 28 622
209. Show your skills Pwn Superior 28 622
210. Mewo time Web Flame 28 622
211. SQLi more Web dorjoos 28 622
212. First Blood: Reloaded Cryptography Superior 29 594
213. The First Half: Reloaded Cryptography Superior 29 594
214. Касид Forensics unknown 29 594
215. Dumpster Diving Miscellaneous unknown 29 594
216. Ghost hunting Miscellaneous unknown 29 594
217. Perception Yields Clarity Reverse Engineering zjzoloo 29 594
218. EncodeManiac! Cryptography unknown 30 565
219. IDK Cryptography unknown 30 565
220. Primal Cryptography Flame 30 565
221. random Cryptography unknown 30 565
222. roxy-2 Cryptography unknown 30 565
223. Darkness Miscellaneous fg0x0 30 565
224. The Vault Miscellaneous fg0x0 30 565
225. Spike Boom Reverse Engineering unknown 30 565
226. Verification Cryptography Superior 31 535
227. Damage Checker Web uug4na 31 535
228. Pug Maestro Web unknown 31 535
229. Riddle Web unknown 31 535
230. Шаар Cryptography unknown 32 504
231. de_chunk Forensics fg0x0 32 504
232. Happily ever after Forensics unknown 32 504
233. Spooky Docs Forensics khangal 32 504
234. Ихэр цамхаг Miscellaneous unknown 32 504
235. License key 2023 Reverse Engineering unknown 32 504
236. Ubuntu Web unknown 32 504
237. "Hello World" Guide Forensics w01f 33 472
238. Stegno Forensics Dudu 33 472
239. First PWN Lesson Reverse Engineering w01f 33 472
240. Ghost in the Cybergrid Reverse Engineering Bekkaze 33 472
241. Brain teaser Steganography Uzi 33 472
242. 1-р шатны дараа Cryptography zjzoloo 34 439
243. New crypto Cryptography Ds3c 34 439
244. roxy-1 Cryptography unknown 34 439
245. Seed of future Cryptography unknown 34 439
246. Туг олох ажиллагаа Forensics Tuvshuud 34 439
247. Post office 2 Programming Flame 34 439
248. License key Reverse Engineering unknown 34 439
249. Reversing is fun Reverse Engineering unknown 34 439
250. Kitana Forensics unknown 35 405
251. Same OR ? Forensics dorjoos 35 405
252. United airlines Reverse Engineering unknown 35 405
253. Find Steganography unknown 35 405
254. Warmup 2024 Cryptography unknown 36 370
255. pb!n Miscellaneous unknown 36 370
256. Untrustworthy filtering Web unknown 36 370
257. Holy Letter Cryptography zjzoloo 37 334
258. Random images Forensics unknown 37 334
259. Puzzle Miscellaneous unknown 37 334
260. Bof Pwn myagmartseren 37 334
261. Call me Pwn reamb 37 334
262. Dig Reverse Engineering unknown 37 334
263. Seeder Reverse Engineering ByamB4 37 334
264. Alphabet Cryptography unknown 38 297
265. Cybercook Cryptography Uzi 38 297
266. Splitted Forensics unknown 38 297
267. Өндөр чинь хэд вэ Forensics unknown 38 297
268. Newsletter - qik OSINT unknown 38 297
269. Checker Cryptography unknown 39 259
270. Crypto analysis Cryptography unknown 39 259
271. pcap forensic 100 Forensics unknown 39 259
272. Log Miscellaneous Uzi 39 259
273. Hunt begins Reverse Engineering unknown 39 259
274. Эрээн алаг Steganography unknown 39 259
275. Scan me Cryptography unknown 40 220
276. Batman Forensics unknown 40 220
277. Fruit Reverse Engineering Ds3c 40 220
278. Arithmetic expression Web unknown 40 220
279. Grown Up SSRF Web uug4na 40 220
280. Ticket Generator Cryptography Bilgee 41 180
281. py Reverse Engineering reamb 41 180
282. websploit1 Web unknown 41 180
283. websploit2 Web unknown 41 180
284. Stay consistent Web unknown 42 139
285. Modular encryption Cryptography Tulgaaaa 43 97
286. The First Half Cryptography Superior 43 97
287. String Forensics Ds3c 43 97
288. The Voice of Dota 2 Miscellaneous fg0x0 43 97
289. TOP SECRET Forensics dorjoos 44 54
290. Inside Reverse Engineering n01c3 44 54
291. Могой Reverse Engineering unknown 44 54
292. Logmein3 Web reamb 44 54
293. Art of Bruteforce Forensics unknown 45 10
294. Тасархай файл Forensics Superior 45 10
295. Who is your daddy? Miscellaneous unknown 45 10
296. Magic Steganography Uzi 45 10
297. Sub Zero Steganography unknown 45 10
298. Decrypt me: 6 Cryptography unknown 46 10
299. Number2Text Cryptography unknown 46 10
300. unknown key but known Cryptography Tulgaaaa 46 10
301. Edit me Forensics Ds3c 46 10
302. Magic bytes Forensics unknown 46 10
303. warmup Forensics w01f 46 10
304. Qu1ck Miscellaneous Uzi 46 10
305. Registration Pwn Superior 46 10
306. Lazy boy Reverse Engineering ByamB4 46 10
307. string Reverse Engineering unknown 46 10
308. Nightfall Cryptography unknown 47 10
309. RSA tutorial Cryptography Superior 47 10
310. Claim your golden tickets Forensics unknown 47 10
311. XOR without X Cryptography Superior 48 10
312. Унш унш бас дахин унш Cryptography unknown 48 10
313. Har tsagaan honi Miscellaneous zjzoloo 48 10
314. Галуун цуваа Programming unknown 48 10
315. PIN PON Web dorjoos 48 10
316. 4r3 Y0u Bl1nd Cryptography Uzi 49 10
317. Box in the box Forensics unknown 49 10
318. Yours Forensics unknown 49 10
319. Геометр Programming unknown 49 10
320. dlugi Cryptography unknown 50 10
321. Back To The Past OSINT Uzi 50 10
322. Execution redirect Reverse Engineering unknown 50 10
323. 1337 Web fg0x0 50 10
324. Cheater: Flag 2 Forensics Xyptonize 51 10
325. md5 Forensics reamb 51 10
326. Муур багш Forensics unknown 51 10
327. Толгой 2025 Forensics dorjoos 51 10
328. Netflix Miscellaneous unknown 51 10
329. Ходоод Reverse Engineering unknown 51 10
330. Advanced Encryption Standard Cryptography Superior 52 10
331. A lot of technique Reverse Engineering T6X3G 52 10
332. Learning Reverse Engineering ByamB4 52 10
333. Dance Dance Dance Cryptography unknown 53 10
334. Onion flag Forensics unknown 53 10
335. Smartdoor Reverse Engineering Bekkaze 53 10
336. Really Suspicious Algorithm Cryptography Superior 54 10
337. Sainuu Forensics unknown 54 10
338. CS2 Weapons Database Web uug4na 54 10
339. Complete random key Cryptography Superior 56 10
340. xo | rorororo Cryptography w01f 56 10
341. Shredder Miscellaneous unknown 56 10
342. Post office 1 Programming Flame 56 10
343. My Customers Web unknown 56 10
344. Бие халаалт Cryptography Superior 57 10
345. Hacker_Kid Forensics unknown 57 10
346. Perfect Nature Gallery Forensics olsujabu 57 10
347. Spike Reverse Engineering unknown 57 10
348. Message to you Forensics unknown 59 10
349. 1 ⊕ 1 = 0 Miscellaneous Uzi 59 10
350. Human Or Orc Steganography unknown 59 10
351. Найраа 2 Web reamb 59 10
352. Crypto Sensei Cryptography unknown 60 10
353. Юлий Цезарийн төгсгөл Cryptography w01f 60 10
354. Can you see Steganography uug4na 60 10
355. Alice and Bob Part 2 Cryptography Ds3c 61 10
356. Obfuscated Arga ys Forensics reamb 61 10
357. Storm Forensics unknown 61 10
358. Decode pls Reverse Engineering unknown 61 10
359. Warmup 2019 Web unknown 61 10
360. Decode me: 2 Cryptography unknown 62 10
361. Шийр Web unknown 62 10
362. sumPrimes Cryptography Tulgaaaa 63 10
363. 中文余数 Cryptography Tulgaaaa 63 10
364. java Reverse Engineering reamb 63 10
365. Babe sql Web dorjoos 63 10
366. Baby crypto Cryptography Flame 64 10
367. Рийл крипто Cryptography w01f 64 10
368. Blueteeth Forensics unknown 64 10
369. Orb Web fg0x0 64 10
370. Morse Cryptography unknown 65 10
371. Chopper Steganography unknown 65 10
372. Web Encryption Web dorjoos 65 10
373. Professor Forensics unknown 66 10
374. Pymoji Miscellaneous Khangal 66 10
375. QR Miscellaneous unknown 67 10
376. GOT.jpg Forensics unknown 68 10
377. Goofyshit Miscellaneous Uzi 68 10
378. Толь бичиг Reverse Engineering Bilgee 70 10
379. Decrypt me: 7 Cryptography unknown 71 10
380. Дэлгүүр хэсэх үү? Pwn Bilgee 71 10
381. Bipolar Forensics n01c3 73 10
382. Oold ikon OSINT unknown 73 10
383. Compose Your Flag: Flag 1 Reverse Engineering Flame 73 10
384. Зургийг нээхэд хүссэн зүйл чинь байгаа Forensics unknown 75 10
385. WarmUP 2025 Forensics dorjoos 76 10
386. No Brain? Miscellaneous unknown 76 10
387. Real Hacker Forensics unknown 78 10
388. Ping 2 Web Bekkaze 78 10
389. Decrypt me: 2 Cryptography unknown 79 10
390. Dub or sub? Forensics Flame 79 10
391. Cookbook Cryptography unknown 81 10
392. 2D Cryptography unknown 84 10
393. Decrypt me: 8 Cryptography unknown 84 10
394. 1_26 Cryptography unknown 85 10
395. Миний хэнз флаг Miscellaneous Superior 86 10
396. can you see it Forensics reamb 88 10
397. Easy forensic 1 Forensics unknown 88 10
398. Unsecure protocol Forensics unknown 88 10
399. We Will Rock You Forensics reamb 88 10
400. Certification Cryptography Uzi 89 10
401. Найраа Web unknown 89 10
402. Chop and change Web unknown 90 10
403. Baby Web Web w01f 91 10
404. Master Yoda Web unknown 91 10
405. Ping 1 Web Bekkaze 92 10
406. EZ Steganography unknown 93 10
407. Flag giveaway Web Superior 95 10
408. Simple Puzzle Cryptography unknown 96 10
409. Чанасан толгой Web Flame 96 10
410. Wakanda үүрд Cryptography Bilgee 97 10
411. Logmein2 Web reamb 99 10
412. Decode me: 8 Cryptography unknown 101 10
413. Easy RSA Cryptography Xyptonize 102 10
414. Library Web uug4na 102 10
415. Нууц зурвас Cryptography Superior 103 10
416. 13-р зуун 2018 Cryptography Ds3c 108 10
417. Cave Web uug4na 110 10
418. Шүлэг Cryptography now.sh 112 10
419. Old but gold Cryptography unknown 113 10
420. Матрёшка Forensics Flame 113 10
421. Decode me: 9 Cryptography unknown 120 10
422. Чухал биш битүүд Steganography Superior 120 10
423. RGB Plane Forensics Uzi 122 10
424. Shiree Cryptography olsujabu 137 10
425. Decrypt me: 5 Cryptography unknown 141 10
426. Cheater: Flag 1 Forensics Xyptonize 142 10
427. Weak password Web unknown 145 10
428. Stupid JS Steganography reamb 153 10
429. Ромын байлдан дагуулагч Cryptography unknown 155 10
430. Prime Programming Ds3c 156 10
431. Бие халаалт 2018 Cryptography Ds3c 166 10
432. 13-р зуун Cryptography unknown 167 10
433. Decode me: 5 Cryptography unknown 168 10
434. Decode me: 4 Cryptography unknown 171 10
435. zipper Forensics ByamB4 171 10
436. roshan's banner Cryptography Tulgaaaa 172 10
437. Decrypt me: 1 Cryptography unknown 178 10
438. Decode me: 3 Cryptography unknown 183 10
439. GG Miscellaneous unknown 185 10
440. Decode me: 1 Cryptography unknown 202 10
441. Emojis Cryptography Uzi 213 10
442. Цэцэгхээн Forensics olsujabu 225 10
443. Smells like 10 Spirit Cryptography unknown 229 10
444. Logmein1 Web reamb 242 10
445. First blood Cryptography Flame 258 10