CTF.mn
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Challenge Category Author Solved Score
1. Broken Cert Revenge Cryptography Tulgaaaa 0 1000
2. Shuffle Cryptography unknown 1 1000
3. Fcrackzip As A Service Web Superior 1 1000
4. sudoku Pwn myagmartseren 2 999
5. 16 bytes: 512-bit primes Cryptography Superior 3 997
6. At the end Cryptography unknown 3 997
7. Encryption service 3 Cryptography Superior 3 997
8. flag-3.bmp Forensics Superior 3 997
9. 1950 Matrix Miscellaneous zjzoloo 3 997
10. Reflection Miscellaneous unknown 3 997
11. Twister Miscellaneous n01c3 3 997
12. Bus 2 Forensics Id3r 4 994
13. Memhunt Forensics Id3r 4 994
14. Scambet Cryptography Superior 5 990
15. flag-2.png Forensics Superior 5 990
16. UMLaa for ULMaa Miscellaneous zjzoloo 5 990
17. em-esrever Reverse Engineering ByamB4 5 990
18. Shopthing Web Khulegu 5 990
19. Impossible to decrypt Cryptography Superior 6 985
20. Secret Note Forensics Id3r 6 985
21. Scramble Miscellaneous unknown 6 985
22. Encryption service 1 Cryptography Superior 7 979
23. Handshake Cryptography Flame 7 979
24. Find me Forensics unknown 7 979
25. Linux MemHunt: Flag 1 Forensics Id3r 7 979
26. Linux MemHunt: Flag 2 Forensics Id3r 7 979
27. Malware Analysis: The Maniac Forensics Xyptonize 7 979
28. Nice to meet you Pwn Superior 7 979
29. Faster Rocket Reverse Engineering ByamB4 7 979
30. Broken Cert Cryptography Tulgaaaa 8 972
31. The First Half: Revolutions Cryptography Superior 8 972
32. Verification: Revolutions Cryptography Superior 8 972
33. Weakryption Cryptography Flame 8 972
34. Temporary data Pwn Myagmartseren 8 972
35. Bad boy Reverse Engineering ByamB4 8 972
36. 96 Cryptography ci0 9 964
37. Encryption service 2 Cryptography Superior 9 964
38. Symbols Cryptography zjzoloo 9 964
39. JPEG Killer Forensics reamb 9 964
40. xGRAPHy Miscellaneous Tulgaaaa 9 964
41. Feedback for debug Pwn Superior 9 964
42. Hello world Pwn Myagmartseren 9 964
43. stack format Pwn myagmartseren 9 964
44. c4 Reverse Engineering ByamB4 9 964
45. Stego 101 Steganography TheEyeLid 9 964
46. Legend Crypto Web unknown 9 964
47. 16 bytes: 256-bit primes Cryptography Superior 10 955
48. Look Like Long Cryptography Tulgaaaa 10 955
49. Weak Digital Signature Cryptography Flame 10 955
50. Weak Mac Cryptography unknown 10 955
51. Obfuscare Forensics fg0x0 10 955
52. Find the correct flag Miscellaneous unknown 10 955
53. Hid2 Miscellaneous zjzoloo 10 955
54. writer Pwn myagmartseren 10 955
55. MATHrix Cryptography zjzoloo 11 945
56. flag-1.jpg Forensics Superior 11 945
57. Flag Crypto Forensics unknown 11 945
58. Malware Analysis: Lucky Seven Forensics Xyptonize 11 945
59. 100 triangles Miscellaneous unknown 11 945
60. Need help Miscellaneous unknown 11 945
61. Арга билиг Miscellaneous unknown 11 945
62. Unknown execution Pwn Superior 11 945
63. Go Lola Go Reverse Engineering unknown 11 945
64. keygen Reverse Engineering jur 11 945
65. Password Reverse Engineering unknown 11 945
66. Space station Reverse Engineering ByamB4 11 945
67. vaultkey Reverse Engineering unknown 11 945
68. Cryptolink Web Flame 11 945
69. 16 bytes: 128-bit primes Cryptography Superior 12 934
70. Шүлэг 2025 Cryptography dorjoos 12 934
71. Remnant of Cicada Miscellaneous Saruul 12 934
72. Simple Binary Miscellaneous unknown 12 934
73. Go winner Pwn myagmartseren 12 934
74. 7 Seconds to Glory Reverse Engineering fg0x0 12 934
75. Seed of Greatness: ELF Reverse Engineering Superior 12 934
76. Seed of Greatness: pyc Reverse Engineering Superior 12 934
77. You know rust Reverse Engineering unknown 12 934
78. Pickle Web unknown 12 934
79. Trinity's Hidden Door Web unknown 12 934
80. Nameless Cryptography unknown 13 922
81. Oracle is here Cryptography Tulgaaaa 13 922
82. Урт тоо Cryptography Uzi 13 922
83. Cicada 3301 Forensics fg0x0 13 922
84. Find the flag Forensics unknown 13 922
85. Unknown dump: Flag 2 Forensics Enkul 13 922
86. Pid Pad Miscellaneous unknown 13 922
87. PixelArt Miscellaneous Uzi 13 922
88. Echo Pwn unknown 13 922
89. Flag for kindness Pwn Superior 13 922
90. 2much Reverse Engineering ByamB4 13 922
91. Compressor Reverse Engineering ByamB4 13 922
92. Encryption tool Reverse Engineering Superior 13 922
93. Strip Reverse Engineering n01c3 13 922
94. NoobSaiBotSSuper Cryptography w01f 14 909
95. Verification: Reloaded Cryptography Superior 14 909
96. Sorry Forensics unknown 14 909
97. St3g4N0 Forensics Id3r 14 909
98. exam Pwn myagmartseren 14 909
99. 2FA - Hard Reverse Engineering fg0x0 14 909
100. base or Reverse Engineering myagmartseren 14 909
101. complicator Reverse Engineering ByamB4 14 909
102. Indonesia Reverse Engineering unknown 14 909
103. Mexico Reverse Engineering unknown 14 909
104. Seed of Greatness: class Reverse Engineering Superior 14 909
105. Vaccine Reverse Engineering unknown 14 909
106. Neon Breach Web Bekkaze 14 909
107. Pixel Quest Web uug4na 14 909
108. Spooky Scary Web Web Flame 14 909
109. Enigmatic Cryptography Uzi 15 895
110. Hard RSA Cryptography Flame 15 895
111. Baby Forensic Forensics unknown 15 895
112. Cheater: Flag 4 Forensics Xyptonize 15 895
113. give-me-everything Forensics naiame 15 895
114. Leaked Forensics unknown 15 895
115. Weird message Forensics unknown 15 895
116. Biter Reverse Engineering ByamB4 15 895
117. sxor Reverse Engineering expletive 15 895
118. WASM in da house Reverse Engineering Flame 15 895
119. Hash Game Cryptography Saruul 16 880
120. Kano Cryptography unknown 16 880
121. Decode Miscellaneous Ds3c 16 880
122. Encryptor Reverse Engineering Bekkaze 16 880
123. Just Wait Me Reverse Engineering ByamB4 16 880
124. Brainrot Cryptography unknown 17 864
125. Cheater: Flag 3 Forensics Xyptonize 17 864
126. It's totally readable Forensics unknown 17 864
127. MemAnalyze-1 Forensics Id3r 17 864
128. Secret SeSAMe Noodles Forensics fg0x0 17 864
129. Beyond Limit Pwn myagmartseren 17 864
130. Not used Pwn reamb 17 864
131. Challenge 2 Reverse Engineering unknown 17 864
132. Compose Your Flag: Flag 2 Reverse Engineering Flame 17 864
133. Neo Reverse Engineering zjzoloo 17 864
134. R4B B1T Reverse Engineering zjzoloo 17 864
135. Encryption Standard Advanced Cryptography Superior 18 847
136. Italy Cryptography unknown 18 847
137. Modular encryption reloaded Cryptography Superior 18 847
138. Pheonix Cryptography Flame 18 847
139. Bus Forensics Id3r 18 847
140. PyJail Miscellaneous unknown 18 847
141. Secure Miscellaneous unknown 18 847
142. Optical Illusion Steganography khangal 18 847
143. SQLi more Web dorjoos 18 847
144. Vaccine API Web unknown 18 847
145. Yoru Web unknown 18 847
146. Nature Cryptography Bilgee 19 829
147. Weird images Forensics ByamB4 19 829
148. Нүүрээ будах нь төгс хамгаалалт биш Forensics unknown 19 829
149. Egypt Steganography unknown 19 829
150. To infinity Steganography unknown 19 829
151. Mewo time Web Flame 19 829
152. Proto Web Khangal 19 829
153. Embrace the randomness Cryptography Superior 20 810
154. Favorite number Cryptography Superior 20 810
155. RSA Cryptography TheEyeLid 20 810
156. Data Breach Forensics w01f 20 810
157. Guess a password Forensics unknown 20 810
158. Klaun Forensics Uzi 20 810
159. Sentry ward Pwn Bekkaze 20 810
160. Show your skills Pwn Superior 20 810
161. 2FA - Easy Reverse Engineering fg0x0 20 810
162. Least Significant Bit Steganography reamb 20 810
163. Lil Pump Web unknown 20 810
164. Regex Based Firewall Web Superior 20 810
165. are you admin i think nahh Cryptography Tulgaaaa 21 790
166. r00t Cryptography unknown 21 790
167. Burglar: Flag 2 Forensics Xyptonize 21 790
168. DigMe: Flag 2 Forensics unknown 21 790
169. EZ Forensic Forensics Id3r 21 790
170. Heavy One Forensics unknown 21 790
171. Kinder Surprise Forensics unknown 21 790
172. Unknown dump: Flag 1 Forensics Enkul 21 790
173. Бие халаалт 2024 Forensics unknown 21 790
174. So easy rev Reverse Engineering unknown 21 790
175. Kindergarten Cryptography zjzoloo 22 769
176. Headshot Forensics fg0x0 22 769
177. M4th Forensics Id3r 22 769
178. Super Secure Banking App Forensics fg0x0 22 769
179. Од түүцгээе Forensics unknown 22 769
180. API Web unknown 22 769
181. Just encryption Cryptography unknown 23 747
182. sumPrimes revenge Cryptography Tulgaaaa 23 747
183. Edit me 2 Forensics w01f 23 747
184. MemAnalyze-2 Forensics Id3r 23 747
185. reducted lvl Forensics unknown 23 747
186. My little NFT OSINT Flame 23 747
187. Void Web uug4na 23 747
188. Reality Security Access Cryptography zjzoloo 24 724
189. The First Half: Reloaded Cryptography Superior 24 724
190. Reverse my Reverse Engineering ByamB4 24 724
191. runme Reverse Engineering ByamB4 24 724
192. Simpler Reverse Engineering ByamB4 24 724
193. websploit1 Web unknown 24 724
194. First Blood: Reloaded Cryptography Superior 25 700
195. Primal Cryptography Flame 25 700
196. de_chunk Forensics fg0x0 25 700
197. Happily ever after Forensics unknown 25 700
198. Гяндан Miscellaneous Bilgee 25 700
199. Shellcode Pwn reamb 25 700
200. Big L or ll Reverse Engineering zjzoloo 25 700
201. Damage Checker Web uug4na 25 700
202. Troy Web Tsolmon 25 700
203. Verification Cryptography Superior 26 675
204. Burglar: Flag 1 Forensics Xyptonize 26 675
205. Twins Miscellaneous unknown 26 675
206. 18 толгойт Reverse Engineering unknown 26 675
207. Jax Reverse Engineering jur 26 675
208. IDK Cryptography unknown 27 649
209. Шаар Cryptography unknown 27 649
210. DigMe: Flag 1 Forensics unknown 27 649
211. Same OR ? Forensics dorjoos 27 649
212. New Era Steganography w01f 27 649
213. Ubuntu Web unknown 27 649
214. Cybercook Cryptography Uzi 28 622
215. "Hello World" Guide Forensics w01f 28 622
216. Dumpster Diving Miscellaneous unknown 28 622
217. Post office 2 Programming Flame 28 622
218. Bof Pwn myagmartseren 28 622
219. Ghost in the Cybergrid Reverse Engineering Bekkaze 28 622
220. Perception Yields Clarity Reverse Engineering zjzoloo 28 622
221. Spike Boom Reverse Engineering unknown 28 622
222. Pug Maestro Web unknown 28 622
223. Checker Cryptography unknown 29 594
224. random Cryptography unknown 29 594
225. roxy-2 Cryptography unknown 29 594
226. Seed of future Cryptography unknown 29 594
227. Spooky Docs Forensics khangal 29 594
228. Касид Forensics unknown 29 594
229. Darkness Miscellaneous fg0x0 29 594
230. Ghost hunting Miscellaneous unknown 29 594
231. The Vault Miscellaneous fg0x0 29 594
232. Riddle Web unknown 29 594
233. EncodeManiac! Cryptography unknown 30 565
234. Stegno Forensics Dudu 30 565
235. Туг олох ажиллагаа Forensics Tuvshuud 30 565
236. First PWN Lesson Reverse Engineering w01f 30 565
237. Reversing is fun Reverse Engineering unknown 30 565
238. PIN PON Web dorjoos 30 565
239. Ихэр цамхаг Miscellaneous unknown 31 535
240. License key 2023 Reverse Engineering unknown 31 535
241. Seeder Reverse Engineering ByamB4 31 535
242. United airlines Reverse Engineering unknown 31 535
243. websploit2 Web unknown 31 535
244. Kitana Forensics unknown 32 504
245. Find Steganography unknown 32 504
246. Untrustworthy filtering Web unknown 32 504
247. New crypto Cryptography Ds3c 33 472
248. roxy-1 Cryptography unknown 33 472
249. Call me Pwn reamb 33 472
250. License key Reverse Engineering unknown 33 472
251. Brain teaser Steganography Uzi 33 472
252. Babe sql Web dorjoos 33 472
253. Grown Up SSRF Web uug4na 33 472
254. 1-р шатны дараа Cryptography zjzoloo 34 439
255. Crypto analysis Cryptography unknown 34 439
256. Holy Letter Cryptography zjzoloo 34 439
257. Random images Forensics unknown 34 439
258. Splitted Forensics unknown 34 439
259. pb!n Miscellaneous unknown 34 439
260. Dig Reverse Engineering unknown 34 439
261. CS2 Weapons Database Web uug4na 34 439
262. Alphabet Cryptography unknown 35 405
263. String Forensics Ds3c 35 405
264. Puzzle Miscellaneous unknown 35 405
265. Logmein3 Web reamb 35 405
266. Warmup 2024 Cryptography unknown 36 370
267. Өндөр чинь хэд вэ Forensics unknown 36 370
268. Log Miscellaneous Uzi 36 370
269. Registration Pwn Superior 36 370
270. Fruit Reverse Engineering Ds3c 36 370
271. string Reverse Engineering unknown 36 370
272. Arithmetic expression Web unknown 36 370
273. pcap forensic 100 Forensics unknown 37 334
274. Hunt begins Reverse Engineering unknown 37 334
275. py Reverse Engineering reamb 37 334
276. Эрээн алаг Steganography unknown 37 334
277. Modular encryption Cryptography Tulgaaaa 38 297
278. Scan me Cryptography unknown 38 297
279. The First Half Cryptography Superior 38 297
280. unknown key but known Cryptography Tulgaaaa 38 297
281. Batman Forensics unknown 38 297
282. TOP SECRET Forensics dorjoos 38 297
283. Newsletter - qik OSINT unknown 38 297
284. Stay consistent Web unknown 38 297
285. Claim your golden tickets Forensics unknown 39 259
286. warmup Forensics w01f 39 259
287. Inside Reverse Engineering n01c3 39 259
288. Могой Reverse Engineering unknown 39 259
289. Ticket Generator Cryptography Bilgee 40 220
290. The Voice of Dota 2 Miscellaneous fg0x0 40 220
291. RSA tutorial Cryptography Superior 41 180
292. Magic bytes Forensics unknown 41 180
293. Тасархай файл Forensics Superior 41 180
294. Qu1ck Miscellaneous Uzi 41 180
295. Decrypt me: 6 Cryptography unknown 42 139
296. Art of Bruteforce Forensics unknown 42 139
297. Edit me Forensics Ds3c 42 139
298. Number2Text Cryptography unknown 43 97
299. Унш унш бас дахин унш Cryptography unknown 43 97
300. Yours Forensics unknown 43 97
301. Who is your daddy? Miscellaneous unknown 43 97
302. Lazy boy Reverse Engineering ByamB4 43 97
303. Web Encryption Web dorjoos 43 97
304. Advanced Encryption Standard Cryptography Superior 44 54
305. XOR without X Cryptography Superior 44 54
306. Геометр Programming unknown 44 54
307. Box in the box Forensics unknown 45 10
308. Галуун цуваа Programming unknown 45 10
309. Magic Steganography Uzi 45 10
310. Sub Zero Steganography unknown 45 10
311. Nightfall Cryptography unknown 46 10
312. md5 Forensics reamb 46 10
313. Муур багш Forensics unknown 46 10
314. Толгой 2025 Forensics dorjoos 46 10
315. Har tsagaan honi Miscellaneous zjzoloo 46 10
316. Cheater: Flag 2 Forensics Xyptonize 47 10
317. My Customers Web unknown 47 10
318. 4r3 Y0u Bl1nd Cryptography Uzi 48 10
319. dlugi Cryptography unknown 48 10
320. A lot of technique Reverse Engineering T6X3G 48 10
321. Execution redirect Reverse Engineering unknown 48 10
322. Learning Reverse Engineering ByamB4 48 10
323. Ходоод Reverse Engineering unknown 48 10
324. 1337 Web fg0x0 48 10
325. Really Suspicious Algorithm Cryptography Superior 49 10
326. Netflix Miscellaneous unknown 49 10
327. Back To The Past OSINT Uzi 49 10
328. Warmup 2019 Web unknown 49 10
329. Шийр Web unknown 49 10
330. Onion flag Forensics unknown 50 10
331. Sainuu Forensics unknown 50 10
332. Smartdoor Reverse Engineering Bekkaze 50 10
333. Spike Reverse Engineering unknown 50 10
334. Complete random key Cryptography Superior 51 10
335. Dance Dance Dance Cryptography unknown 52 10
336. xo | rorororo Cryptography w01f 52 10
337. Hacker_Kid Forensics unknown 52 10
338. Perfect Nature Gallery Forensics olsujabu 52 10
339. Post office 1 Programming Flame 52 10
340. Найраа 2 Web reamb 52 10
341. Crypto Sensei Cryptography unknown 53 10
342. Obfuscated Arga ys Forensics reamb 54 10
343. Decode pls Reverse Engineering unknown 54 10
344. Юлий Цезарийн төгсгөл Cryptography w01f 55 10
345. Message to you Forensics unknown 55 10
346. Storm Forensics unknown 55 10
347. Alice and Bob Part 2 Cryptography Ds3c 56 10
348. Бие халаалт Cryptography Superior 56 10
349. 1 ⊕ 1 = 0 Miscellaneous Uzi 56 10
350. Shredder Miscellaneous unknown 56 10
351. java Reverse Engineering reamb 56 10
352. Can you see Steganography uug4na 56 10
353. Human Or Orc Steganography unknown 56 10
354. Рийл крипто Cryptography w01f 58 10
355. Chopper Steganography unknown 58 10
356. Orb Web fg0x0 58 10
357. sumPrimes Cryptography Tulgaaaa 59 10
358. Baby crypto Cryptography Flame 60 10
359. Decode me: 2 Cryptography unknown 60 10
360. 中文余数 Cryptography Tulgaaaa 60 10
361. Professor Forensics unknown 60 10
362. Blueteeth Forensics unknown 61 10
363. Дэлгүүр хэсэх үү? Pwn Bilgee 61 10
364. Flag giveaway Web Superior 61 10
365. QR Miscellaneous unknown 62 10
366. Ping 2 Web Bekkaze 62 10
367. Morse Cryptography unknown 63 10
368. WarmUP 2025 Forensics dorjoos 63 10
369. Goofyshit Miscellaneous Uzi 63 10
370. Толь бичиг Reverse Engineering Bilgee 63 10
371. GOT.jpg Forensics unknown 64 10
372. Pymoji Miscellaneous Khangal 64 10
373. Decrypt me: 7 Cryptography unknown 65 10
374. Chop and change Web unknown 66 10
375. Зургийг нээхэд хүссэн зүйл чинь байгаа Forensics unknown 67 10
376. Compose Your Flag: Flag 1 Reverse Engineering Flame 68 10
377. Real Hacker Forensics unknown 69 10
378. No Brain? Miscellaneous unknown 69 10
379. Oold ikon OSINT unknown 69 10
380. Cookbook Cryptography unknown 70 10
381. Bipolar Forensics n01c3 70 10
382. Найраа Web unknown 70 10
383. Logmein2 Web reamb 71 10
384. Ping 1 Web Bekkaze 71 10
385. Decrypt me: 2 Cryptography unknown 72 10
386. Baby Web Web w01f 72 10
387. Dub or sub? Forensics Flame 74 10
388. Чанасан толгой Web Flame 75 10
389. 1_26 Cryptography unknown 76 10
390. Certification Cryptography Uzi 76 10
391. Master Yoda Web unknown 76 10
392. 2D Cryptography unknown 77 10
393. can you see it Forensics reamb 77 10
394. Easy forensic 1 Forensics unknown 77 10
395. Unsecure protocol Forensics unknown 77 10
396. Decrypt me: 8 Cryptography unknown 78 10
397. We Will Rock You Forensics reamb 81 10
398. Миний хэнз флаг Miscellaneous Superior 81 10
399. Simple Puzzle Cryptography unknown 84 10
400. EZ Steganography unknown 86 10
401. Cave Web uug4na 87 10
402. Library Web uug4na 88 10
403. Wakanda үүрд Cryptography Bilgee 89 10
404. Decode me: 8 Cryptography unknown 90 10
405. 13-р зуун 2018 Cryptography Ds3c 92 10
406. Easy RSA Cryptography Xyptonize 92 10
407. Decode me: 9 Cryptography unknown 95 10
408. Old but gold Cryptography unknown 95 10
409. Нууц зурвас Cryptography Superior 95 10
410. Шүлэг Cryptography now.sh 102 10
411. Матрёшка Forensics Flame 102 10
412. Weak password Web unknown 102 10
413. Чухал биш битүүд Steganography Superior 107 10
414. RGB Plane Forensics Uzi 109 10
415. Decrypt me: 5 Cryptography unknown 115 10
416. Shiree Cryptography olsujabu 120 10
417. Prime Programming Ds3c 125 10
418. Ромын байлдан дагуулагч Cryptography unknown 127 10
419. Cheater: Flag 1 Forensics Xyptonize 127 10
420. Stupid JS Steganography reamb 129 10
421. Бие халаалт 2018 Cryptography Ds3c 130 10
422. Decode me: 5 Cryptography unknown 136 10
423. 13-р зуун Cryptography unknown 138 10
424. Decode me: 4 Cryptography unknown 139 10
425. Decrypt me: 1 Cryptography unknown 144 10
426. Decode me: 3 Cryptography unknown 148 10
427. roshan's banner Cryptography Tulgaaaa 150 10
428. zipper Forensics ByamB4 150 10
429. Decode me: 1 Cryptography unknown 162 10
430. GG Miscellaneous unknown 169 10
431. Emojis Cryptography Uzi 185 10
432. Logmein1 Web reamb 188 10
433. Цэцэгхээн Forensics olsujabu 195 10
434. Smells like 10 Spirit Cryptography unknown 200 10
435. First blood Cryptography Flame 213 10