RingZer0 Team Online CTF
RingZer0 Team's online CTF offers you tons of challenges designed to test and improve your hacking skills through hacking challenges. Register and get a flag for every challenge.
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I started this website in 2014 hosting everything in my garage (Picture here). If you like the website you can support us by making a donation. With those donations it will be possible to buy modern hardware and add new great stuff on the website that required more resources. You can find the list of users that contributed here.
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The RingZer0 Team Online CTF is now proudly hosted using Claranet FR cloud service.
Challenges
Currently more than 300 challenges are available over 15 categories. Have fun resolving them.
Register
Your first time here? First step register an account, that way you will be able to login and start solving challenges.
Want to become certified RCEH?
Super simple get at least 1000 points and you will receive your official badge and certification. The RingZer0 Certified Elite Hacker (RCEH) certification is a highly technical certification. Anyone holding the RCEH title is a highly skilled hacker.
Once you get your RCEH title you can proudly use the certified logo 
and show to the rest of the world that you successfully managed to solve several hacking challenges on the RingZer0 CTF.
Scoreboard - 37057 players |
| Position | Username | Points | Gold | Last Validation | Special Mention |
|---|---|---|---|---|---|
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1475 | 146 | 2020-10-20 23:05:41 | ||
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1405 | 2 | 2020-09-21 17:53:36 | ||
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1302 | 0 | 2020-09-29 05:04:41 | ||
| 4 |
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1244 | 17 | 2020-10-30 00:02:53 | |
| 5 |
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1226 | 684 | 2020-10-23 23:21:21 | |
| 6 |
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1208 | 210 | 2020-09-10 16:44:37 | |
| 7 |
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1201 | 0 | 2018-09-25 11:21:27 | |
| 8 |
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1129 | 11 | 2017-08-20 17:04:56 | |
| 9 |
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1108 | 2 | 2020-09-18 09:29:56 | |
| 10 |
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1068 | 8 | 2020-09-09 17:36:04 | |
| 11 |
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1047 | 97 | 2020-02-03 13:51:17 | |
| 12 |
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1044 | 5 | 2020-08-02 02:04:58 | |
| 13 |
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1034 | 74 | 2020-07-24 10:37:29 | |
| 14 |
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1023 | 95 | 2020-08-18 20:07:53 | |
| 15 |
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1020 | 17 | 2020-10-24 22:40:51 | |
| 16 |
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1018 | 2 | 2019-11-13 14:37:57 | |
| 17 |
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1009 | 117 | 2019-08-09 23:04:53 | |
| 18 |
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1005 | 311 | 2018-10-29 12:29:39 | |
| 19 |
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947 | 0 | 2020-06-21 19:17:28 | |
| 20 |
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894 | 59 | 2020-05-11 09:36:18 | |
| 21 |
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872 | 791 | 2017-06-05 09:19:11 | |
| 22 |
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832 | 158 | 2020-09-16 13:00:24 | |
| 23 |
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779 | 11 | 2020-09-02 14:56:26 | |
| 24 |
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778 | 17 | 2020-06-09 21:51:44 | |
| 25 |
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777 | 0 | 2018-01-18 12:58:24 | |
| 26 |
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758 | 4 | 2020-08-23 17:18:52 | |
| 27 |
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756 | 4 | 2020-10-04 18:03:47 | |
| 28 |
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735 | 0 | 2020-09-05 04:09:06 | |
| 29 |
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723 | 3 | 2020-10-27 09:54:28 | |
| 30 |
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718 | 1 | 2020-05-18 23:57:34 | |
| 31 |
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702 | 569 | 2020-10-10 09:31:38 | |
| 32 |
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683 | 105 | 2020-08-25 23:06:15 | |
| 33 |
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665 | 0 | 2015-06-15 15:37:39 | |
| 34 |
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643 | 42 | 2020-06-05 00:19:47 | |
| 35 |
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643 | 0 | 2020-09-24 01:21:59 | |
| 36 |
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639 | 8 | 2017-01-31 06:56:54 | |
| 37 |
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634 | 0 | 2020-06-21 20:05:30 | |
| 38 |
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628 | 3 | 2020-09-26 17:12:09 | |
| 39 |
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625 | 41 | 2020-08-30 06:58:07 | |
| 40 |
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624 | 1 | 2019-11-26 01:44:50 | |
| 41 |
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618 | 0 | 2020-06-29 22:29:23 | |
| 42 |
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613 | 517 | 2020-02-24 16:22:49 | |
| 43 |
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611 | 26 | 2018-02-23 15:37:57 | |
| 44 |
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603 | 0 | 2016-05-03 15:48:08 | |
| 45 |
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594 | 18 | 2020-10-22 22:41:01 | |
| 46 |
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588 | 93 | 2020-07-27 14:43:12 | |
| 47 |
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581 | 1 | 2016-10-24 00:59:48 | |
| 48 |
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580 | 194 | 2020-09-05 16:59:28 | |
| 49 |
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569 | 5 | 2020-06-16 02:29:45 | |
| 50 |
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566 | 0 | 2020-07-30 19:46:59 |
Search by username
Latest challenges validations
| Last validation | Challenge | User who solved it |
|---|---|---|
| 2020-10-30 14:35:22 | I made a dd of Agent Smith usb key | offensive4n6 |
| 2020-10-30 14:20:37 | Who I am part 2 | offensive4n6 |
| 2020-10-30 13:59:01 | Hash me please | offensive4n6 |
| 2020-10-30 13:11:19 | Poor internet connection | ai |
| 2020-10-30 13:07:53 | Poor internet connection | Anthropomorphismus |
| 2020-10-30 12:43:16 | Hash breaker | V5November |
| 2020-10-30 12:28:35 | Ask your grandpa again! | V5November |
| 2020-10-30 12:14:46 | I hate mathematics | V5November |
| 2020-10-30 12:04:04 | Hash me reloaded | V5November |
| 2020-10-30 11:33:31 | Ask your grandpa! | V5November |
The latest write-up with special mention
The latest challenges added
| Challenge | Points | Category |
|---|---|---|
| Guess the number | 6 | Cryptography |
| UploadStar Reloaded | 5 | Web |
| UploadStar | 3 | Web |
| SSO Service | 4 | Cryptography |
| Space Invaders | 4 | Reverse Engineering |
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I started this website in 2014 hosting everything in my garage. If you like the website you can support us by making a donation. With those donations it will be possible to buy modern hardware and add new great stuff on the website that required more resources. You can find the list of users that contributed here.
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