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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.

The RingZer0 Team Online CTF is now proudly hosted by NorthSec.

Chat / Questions / Help

You'll find all what you need in the Discord Server.

Join the Discord now!

Challenges

Currently more than 300 challenges are available over 15 categories. Have fun resolving them.

View challenges »

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 70% of the total points (which is 1222 points at the moment). With this certification, you will be able to buy a RCEH token that will be available on the shop. 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 - 46698 players

Position	Username	Points	Gold	Last Validation
	sagefault	1716	168	2023-10-04 11:29:45
	jusb3	1703	5	2023-07-28 15:19:36
	dysleixa	1525	79	2023-08-16 21:31:25
4	Corb3nik	1437	2	2022-03-12 18:34:33
5	Sideni	1380	1	2022-07-17 21:39:25
6	Towel	1272	677	2022-11-30 08:23:05
7	Freddrickk	1242	17	2020-10-30 00:02:53
8	mbergeron	1218	196	2022-02-14 12:04:48
9	stamparm	1194	0	2018-09-25 11:21:27
10	acormier	1178	87	2023-09-26 23:36:58
11	cyberguru	1176	0	2022-03-20 15:48:01
12	an0n	1124	6	2017-08-20 17:04:56
13	nic-lovin	1123	2	2023-07-29 20:33:04
14	dinus	1085	2	2023-01-14 19:00:45
15	fob	1068	10	2023-08-03 20:02:34
16	theindian	1064	917	2022-10-27 16:58:17
17	alxbl	1052	74	2021-01-05 21:30:35
18	HoLyVieR	1041	97	2022-05-20 18:32:13
19	fsharp	1024	2	2023-09-20 02:45:23
20	GuilT	1019	114	2021-12-31 00:06:42
21	fLink	1019	0	2019-11-13 14:37:57
22	yehuju	1017	0	2022-03-23 20:30:50
23	allfro	1012	0	2022-12-22 05:24:52
24	errorinside	1012	0	2022-12-20 11:24:46
25	bluedevil	1012	0	2022-12-20 11:20:44
26	killer2	1005	311	2018-10-29 12:29:39
27	V5November	1000	0	2022-10-05 05:17:02
28	Superior	978	0	2023-06-15 05:04:33
29	nopernik	972	66	2023-06-18 18:17:36
30	garigouster	867	780	2017-06-05 09:19:11
31	fffroze	788	8	2023-05-27 02:31:41
32	snowscan	779	17	2022-10-23 15:17:01
33	gdenhez	770	545	2023-10-01 16:05:32
34	lolwut	770	0	2018-01-18 12:58:24
35	destiny	758	4	2020-08-23 17:18:52
36	becojo	750	7	2021-11-11 19:06:39
37	marcS0H	737	1	2021-05-20 17:18:53
38	marcan2020	720	18	2023-02-24 22:07:57
39	minektur	705	175	2023-04-07 18:13:43
40	davidlebr1	703	98	2022-04-03 20:26:13
41	madness	697	567	2022-03-18 14:58:55
42	watchdog	693	58	2021-09-09 16:43:09
43	lixtelnis	690	3	2023-08-27 16:25:09
44	madbat2	659	0	2015-06-15 15:37:39
45	MusicLegend98	652	2	2023-08-23 19:26:24
46	Pourliver	648	0	2022-10-20 16:08:38
47	marlo	647	0	2022-03-19 13:35:07
48	pwndre	642	42	2020-06-05 00:19:47
49	sulliedeclat	638	1	2023-04-24 22:36:50
50	rootkitg	638	0	2023-05-05 03:10:23

Search by username

Latest challenges validations

Last validation	Challenge	User who solved it
2023-10-04 12:23:17	Bash Jail 1	filedesless
2023-10-04 12:18:19	Who I am?	DatTTHE171266
2023-10-04 11:29:45	The Cabal	sagefault
2023-10-04 11:10:50	Who I am?	HieuTMHE172312
2023-10-04 09:58:23	Look inside the house	mg777
2023-10-04 09:54:31	Most basic SQLi pattern.	bureau-k2
2023-10-04 09:47:25	Victor reloaded	mg777
2023-10-04 09:40:04	Victor you're hidding me something	nullzero
2023-10-04 09:21:01	Bash Jail 1	nullzero
2023-10-04 08:59:25	Some martian message	nullzero

The latest write-up with special mention

Author	Challenge	Write-Up
dysleixa	Ask G.O.D (09/18)	dysleixa_367.pdf
dysleixa	Ask G.O.D (04/18)	dysleixa_362.pdf
dysleixa	Email Template (2/3)	dysleixa_379.pdf
gdenhez	The G.O.D Archive	writeup_377.pdf
minektur	C Jail 4	Writeup-257-C-Jail-4.pdf
gdenhez	NC8 MAINFRAME MANAGEMENT INTERFACE Part 2 Flag 3	writeup_286.pdf
minektur	XSS Challenge 5	Writeup-100-XSS-Challenge-5-the-crazy-LFI-way.pdf
gdenhez	Knight Portal (3/3)	writeup_352.pdf
minektur	Knight Portal (3/3)	Writeup-352-Knight-Portal-Part-3.pdf
theindian	Homemade craptography #2	Cryptography-319-Homemade_craptography_#2.pdf

The latest challenges added

Challenge	Points	Category
Scammed again	3	NorthSec 2021
The Cabal	2	NorthSec 2021
Stock Options Portal	6	NorthSec 2022
Corporate Cafeteria Menu	6	NorthSec 2023
We Call it Spring (4/4)	2	NorthSec 2023

Charles F. Hamilton started RingZer0 website in 2014 by hosting everything in his own garage (Picture here). You can find the list of users that contributed over the years here.