Challenges

301 challenges are currently available

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Sandboxes Status

Challenges
SysAdmin Part 1 sandbox is Up	Secure Mail sandbox is Up
Looking for god in your life? sandbox is Up	XSS Challenge 1 sandbox is Up
Captcha I sandbox is Up	Propaganda mail sandbox is Up
Basics of Linux x64 shellcoding sandbox is Up	Level1 Pwnage Linux Level Up sandbox is Up
Level1 Pwnage Linux x86_64 sandbox is Up	Virtual World sandbox is Down
Hot Single Mom sandbox is Up	Bash Jail 1 sandbox is Up

Coding challenges (17)

Challenges descriptions	Points	Validation	Author
Hash me please	2	2137	Mr.Un1k0d3r
Ask your grandpa!	2	826	Mr.Un1k0d3r's Dad
Hash me reloaded	3	1233	Mr.Un1k0d3r
I hate mathematics	3	1337	Mr.Un1k0d3r
Ask your grandpa again!	4	269	Mr.Un1k0d3r's Dad
Hash breaker	4	1007	Mr.Un1k0d3r
I saw a little elf	4	363	Mr.Un1k0d3r
Hash breaker reloaded	5	606	Mr.Un1k0d3r
Execute me if you can	5	317	Mr.Un1k0d3r
Read me if you can	6	316	Mr.Un1k0d3r
Hash breaker reloaded again	6	205	Mr.Un1k0d3r
Ascii Art	6	474	Mr.Un1k0d3r
Execute me if you can again	6	158	Mr.Un1k0d3r
Xor me if you can	6	311	Mr.Un1k0d3r
Number game	7	204	Mr.Un1k0d3r
Classic Sudoku	7	180	Mr.Un1k0d3r
Find the right word	7	241	Mr.Un1k0d3r

Cryptography (30)

Challenges descriptions	Points	Validation	Author
Some martian message	1	4467	Mr.Un1k0d3r
You're Drunk!	1	669	Mr.Un1k0d3r
File recovery	1	2172	Mr.Un1k0d3r
Fashion Victim	2	323	GoSec CTF 2014
Public key recovery	2	1079	Mr.Un1k0d3r
Martian message part 2	2	2004	Mr.Un1k0d3r
Let's Play Scrabble!	3	9	Madness
Can you understand this sentence?	3	482	Mr.Un1k0d3r
Hangovers and more: Bacon	3	370	SynneR
Martian message part 3	3	753	Mr.Un1k0d3r
I Lost my password	3	855	Mr.Un1k0d3r
Crypto over the network	4	105	Mr.Un1k0d3r
Crypto Leak	4	22	NSEC 2018 (Towel)
Crypto Object	4	129	GoSec CTF 2014
Encrypted Zip	4	398	Mr.Un1k0d3r
Jabber	5	4	Madness
Free Flag Encrypter	5	14	Towel
Let's Play Scrabble! Part 2	5	3	Madness
Is it a secure string?	5	194	Cedrick Chaput
Pattern is the key	6	38	Mr.Un1k0d3r
TotalSecure Message Encrypter	6	70	Towel
Welcome to the asylum	6	47	GoSec CTF 2014
Jabber Part 2	7	4	Madness
Homemade Craptography	8	5	NSEC 2018 (Holyvier)
Crypto is not good as you think	8	117	Mr.Un1k0d3r
Mars Log	8	5	NSEC 2018 (Towel)
Spies	9	26	CS Games 2016 (HoLyVieR)
Rusty RSA message signing service	9	10	b0n0n & An0n
TotalSecure Message Encrypter V2	10	16	Towel
Unicorn As A Service	11	6	Towel

Forensics (28)

Challenges descriptions	Points	Validation	Author
Who I am part 2	1	289	Mr.Un1k0d3r
I made a dd of Agent Smith usb key	1	2366	Cedrick Chaput
I love cat	2	221	Mr.Un1k0d3r
Dr. Pouce	2	1738	Cedrick Chaput
Attention Dinosaure Survive	2	945	PRL
The good, the bad and the ugly	2	57	Mr.Un1k0d3r
1 / 3 Do not waste the environment	2	751	PRL
Hide my ass in my home!	2	1141	Cedrick Chaput
Hey Chuck where is the flag?	2	1111	Mr.Un1k0d3r
Meat Loaf	2	188	Ekse
Who I am?	2	667	Mr.Un1k0d3r
The words flew but writing remains	3	116	Martin Dube
2 / 3 Did you see my desktop?	3	636	PRL
Are you Twisted Insane?	3	21	Cedrick Feat Mr.Un1k0d3r
Someone steal my flag!	3	269	Mr.Un1k0d3r
802.1X Part 1	4	42	NSEC 2015
3 / 3 Suspicious account password?	4	511	PRL
Poor internet connection	4	325	Cedrick Chaput
Agent Smith reloaded	4	194	Cedrick Chaput
R.I.P MsPaint	4	69	Misker
We got breached	5	153	Mr.Un1k0d3r
Someone steal my flag again	5	78	GoSec CTF 2014
Ping pong	5	69	SynneR
Spy my girl	5	149	Cedrick Chaput
We got breached again	6	118	Mr.Un1k0d3r
Russian Crypto Roulette	6	54	SynneR
Really Depressed Protocol	7	61	SynneR
802.1X Part 2	8	33	NSEC 2015

Jail Escaping (21)

Challenges descriptions	Points	Validation	Author
Bash Jail 1	1	1477	Mr.Un1k0d3r
Bash Jail 2	2	966	Mr.Un1k0d3r
Bash Jail 3	3	562	Mr.Un1k0d3r
Bash Jail 4	4	317	Mr.Un1k0d3r
Bash Jail 5	6	133	Mr.Un1k0d3r
Bash Jail 6	8	15	Garigouster
Bash Jail 7	12	11	Garigouster
C Jail 1	1	249	Mr.Un1k0d3r
C Jail 2	2	168	Mr.Un1k0d3r
C Jail 3	3	138	Mr.Un1k0d3r
C Jail 4	5	13	Garigouster
C Jail 5	7	9	Garigouster
C Jail 6	14	4	Garigouster
PHP Jail 1	1	407	Mr.Un1k0d3r
PHP Jail 2	2	269	Mr.Un1k0d3r
PHP Jail 3	3	182	Mr.Un1k0d3r
PHP Jail 4	4	139	Mr.Un1k0d3r
PHP Jail 5	6	112	Mr.Un1k0d3r
PyJail 1	3	164	Martin Dube
PyJail 2	5	97	Martin Dube
PyJail 3	6	32	Martin Dube

JavaScript (10)

Challenges descriptions	Points	Validation	Author
Client side validation is bad!	1	5278	Mr.Un1k0d3r
Hashing is more secure	1	4610	Mr.Un1k0d3r
Then obfuscation is more secure	1	3471	Mr.Un1k0d3r
Most Secure Crypto Algo	2	1114	Mr.Un1k0d3r
Valid key required	2	675	Francois Lajeunesse
Why not?	2	2913	Mr.Un1k0d3r
Why not be more secure?	5	419	Mr.Un1k0d3r
WTF Lol!	6	195	HoLyVieR
Interstellar PhoneBook	6	20	NSEC 2018 (Holyvier)
Beauty and the beast	7	31	Mr.Un1k0d3r

Malware Analysis (17)

Challenges descriptions	Points	Validation	Author
APT 1337	4	25	NSEC 2017 (Mr.Un1k0d3r)
Capture 1 Part 1	1	459	Mr.Un1k0d3r
Capture 1 Part 2	1	147	Mr.Un1k0d3r
Capture 1 Part 3	1	164	Mr.Un1k0d3r
Capture 1 Part 4	2	19	Mr.Un1k0d3r
Capture 1 Part 5	3	34	Mr.Un1k0d3r
Capture 1 Part 6	3	112	Mr.Un1k0d3r
Capture 1 Part 7	3	21	Mr.Un1k0d3r
Capture 2 Part 1	1	45	Mr.Un1k0d3r
Capture 2 Part 2	1	78	Mr.Un1k0d3r
Capture 2 Part 3	1	80	Mr.Un1k0d3r
Capture 2 Part 4	3	78	Mr.Un1k0d3r
Capture 2 Part 5	4	29	Mr.Un1k0d3r
Capture 2 Part 6	7	11	Mr.Un1k0d3r
Just Another MBR Ransomware	8	12	Towel
RAO democracy	4	39	NSEC 2017 (Mr.Un1k0d3r)
WebShell of Hell	5	7	An0n

Pwnage Linux (19)

Challenges descriptions	Points	Validation	Author
Level1 Pwnage Linux Level Up	1	457	P-Y Feat Martin Dube
Level2 Pwnage Linux Level Up	2	298	P-Y Feat Martin Dube
Remote Auth	2	96	NSEC 2015
Level3 Pwnage Linux Level Up	3	223	P-Y Feat Martin Dube
Level1 Pwnage Linux x86_64	3	166	Mr.Un1k0d3r
Level2 Pwnage Linux x86_64	4	55	Mr.Un1k0d3r
Sometime there is no buffer overflow	4	70	Mr.Un1k0d3r
Can you get the service password	4	110	Mr.Un1k0d3r
Level4 Pwnage Linux Level Up	5	104	Mr.Un1k0d3r
Friendly race	5	21	Garigouster
RPCFTW!	6	23	NSEC 2015
Jack the heaper	6	18	uaf.io
Level3 Pwnage Linux x86_64	7	49	Mr.Un1k0d3r
Level4 Pwnage Linux x86_64	7	29	Mr.Un1k0d3r
Just another useless service	8	34	NSEC 2015
Take over the Virtual World	8	26	NSEC 2015
Base64 As A Service	8	26	Guilt
Base64 As A Service Reloaded	9	21	Guilt
Delivery As A Service	10	14	NSEC 2016

Reverse Engineering (45)

Challenges descriptions	Points	Validation	Author
Time to learn x86 ASM & gdb	2	1645	Mr.Un1k0d3r
Can you see through the star	2	977	Mr.Un1k0d3r
Crack Me 1	3	639	Mr.Un1k0d3r
Kernel introduction	3	187	Mr.Un1k0d3r
Heap allocator	3	192	NSEC 2015
Introduction to MIPS	3	249	Mr.Un1k0d3r
I never forget the Nintendo 64	3	509	Mr.Un1k0d3r
Windows x86 reversing is cool	3	576	Mr.Un1k0d3r
Intro To Sparc	3	102	Ian-Kyle Wagner
ASM Lovers	4	70	NSEC 2016
Wrong byte!	4	223	Mr.Un1k0d3r
Let's take a detour	4	66	Floesen
Altera?	4	43	NSEC 2016
Power to the people	4	34	NSEC 2015
Old School	4	44	Towel
Introduction to ARM	4	278	Mr.Un1k0d3r
Windows API for the win	4	271	Mr.Un1k0d3r
The MI7 password prompt	5	39	NSEC 2018 (Mr.Un1k0d3r)
WASM Part 1	5	42	NSEC 2018 (Isra17)
Virtual World	5	52	NSEC 2015
Smart enough?	5	90	NSEC 2015
Phenix Golgoth	5	38	Hackfest 2016
Can I speak with the kernel?	5	51	Zerosum0x0
Pwndr3 Authenticator	5	44	Pwndr3
Back to our roots	5	91	Mr.Un1k0d3r
RingZer0 Authenticator	5	190	Ekse
Update Manager	6	50	Ekse
Need a client	6	71	Mr.Un1k0d3r
Flag stealer	6	61	Ekse
I Think I forgot to take out the garbage!	6	18	Mr.Un1k0d3r
The supreme bash	7	17	NSEC 2017 (Mr.Un1k0d3r)
SOS Lib	7	21	Mr.Un1k0d3r
Buggy Bunny	7	8	Garigouster
Armed and ready	7	11	NSEC 2015
Rebate As A Service	8	33	NSEC 2016
You're not welcome	8	44	Towel
License to kill	8	0	Mr.Un1k0d3r
WASM Part 2	8	7	NSEC 2018 (Isra17)
Trolling the troll	10	29	Mr.Un1k0d3r
Keygen time again	10	28	GoSec CTF 2014
The unknown challenge	11	15	Mr.Un1k0d3r
You're not welcome again!	12	18	Towel
WASM Part 3	12	5	NSEC 2018 (Isra17)
The oracle	13	16	Towel
Mars Reloaded	18	5	NSEC 2018 (Towel)

Shellcoding (7)

Challenges descriptions	Points	Validation	Author
Basics of Linux x64 shellcoding	2	430	Mr.Un1k0d3r
Linux x64 shellcoding level 2	4	218	Mr.Un1k0d3r
Linux x64 shellcoding level 3	6	170	Mr.Un1k0d3r
Linux x64 shellcoding level 4	8	134	Mr.Un1k0d3r
Linux x64 shellcoding level 5	10	94	Mr.Un1k0d3r
Linux x64 shellcoding level 6	12	80	Mr.Un1k0d3r
Linux x64 shellcoding level 7	14	43	Mr.Un1k0d3r

SQL Injection (30)

Challenges descriptions	Points	Validation	Author
Most basic SQLi pattern.	1	6461	Mr.Un1k0d3r
ACL rulezzz the world.	2	3471	Mart
Login portal 1	2	2424	Mr.Un1k0d3r
Random Login Form	2	1021	Mr.Un1k0d3r
Just another login form	2	1247	Mr.Un1k0d3r
Po po po po postgresql	2	1178	Mr.Un1k0d3r
0 Day Store	3	99	NSEC 2015
Don't mess with Noemie; she hates admin!	3	554	Mr.Un1k0d3r
What's the definition of NULL	3	506	Mr.Un1k0d3r
Login portal 2	3	370	Mr.Un1k0d3r
Quote of the day	4	477	Mr.Un1k0d3r
Thinking outside the box is the key	4	415	Mr.Un1k0d3r
No more hacking for me!	4	227	Mr.Un1k0d3r
Don't Stumble in the Process	4	36	Mbergeron
Quote of the day reloaded	5	186	Mr.Un1k0d3r
Hot Single Mom	6	127	GoSec CTF 2014
Login portal 3	6	192	Mr.Un1k0d3r
When it's lite it's not necessarily easy	6	171	Mr.Un1k0d3r
Internet As A Service	7	64	Mr.Un1k0d3r
Login portal 4	7	118	Mr.Un1k0d3r
Size DOES matter	7	119	Mr.Un1k0d3r
/etc/passwd	7	124	Mr.Un1k0d3r
Groups of hacker	7	143	Mr.Un1k0d3r
The useless search tool	8	103	Mr.Un1k0d3r
Login portal 5	8	64	Mr.Un1k0d3r
stackoverflow.com lied to me... again	9	56	Corb3nik
Login portal 6	10	51	Mr.Un1k0d3r
SQHell	11	12	Sideni feat. Mbergeron
Don't Stumble in the Process Reloaded	12	7	Mbergeron
!Mysql + Brain fart	13	29	Mr.Un1k0d3r

Steganography (24)

Challenges descriptions	Points	Validation	Author
You're lost? Use the map	1	1132	Mr.Un1k0d3r
Victor you're hidding me something	1	1738	Cedrick Chaput
SigID Level 1	1	704	Guenael
Pixel Everywhere	2	86	Mr.Un1k0d3r
I'm Goronyo Babad Nigerian prince	2	314	Mr.Un1k0d3r
The vestige of dial-up Internet	2	59	Uid0
Missing Pieces	2	562	Cedrick Chaput
Brainsick	2	619	Mr.Un1k0d3r
Hidden In Plain Sight	2	456	NSEC 2015
The Sloth	2	79	Misker
Victor reloaded	2	750	Cedrick Chaput
A ghost sound	2	626	Cedrick Chaput
Look inside the house	2	678	Mr.Un1k0d3r
Crazy Cat Lady	3	30	Madness
Love Letter	3	139	Towel
5 beautiful colors	3	26	PublicName
Can you see through the matrix!	3	116	Mr.Un1k0d3r
Your old friend Orloge Simard	3	452	Cedrick Chaput
Can you see through the matrix reloaded!	4	22	Towel
Stay Classy!	4	13	Sideni
Not just 64	4	7	Madness
Walk the line!	5	116	Cedrick Chaput
Stop the violence	5	9	jusb3
SigID Level 2	6	5	Guenael

SysAdmin Linux (8)

Challenges descriptions	Points	Validation	Author
SysAdmin Part 1	1	1654	Cedrick Chaput
SysAdmin Part 2	1	1160	Cedrick Feat Mr.Un1k0d3r
SysAdmin Part 3	1	672	Mr.Un1k0d3r
SysAdmin Part 4	2	719	Cedrick Feat Mr.Un1k0d3r
SysAdmin Part 5	2	387	Cedrick Feat Mr.Un1k0d3r
SysAdmin Part 6	3	388	Cedrick Chaput
SysAdmin Part 7	4	302	Cedrick Chaput
SysAdmin Part 8	4	387	Cedrick Feat Mr.Un1k0d3r

The NC8 Reverse Engineering Track (6)

Challenges descriptions	Points	Validation	Author
NC8 MAINFRAME MANAGEMENT INTERFACE Part 1	7	29	NSEC 2018 (isra17)
NC8 MAINFRAME MANAGEMENT INTERFACE Part 2 Flag 1	3	19	NSEC 2018 (isra17)
NC8 MAINFRAME MANAGEMENT INTERFACE Part 2 Flag 2	7	19	NSEC 2018 (isra17)
NC8 MAINFRAME MANAGEMENT INTERFACE Part 2 Flag 3	10	18	NSEC 2018 (isra17)
NC8 MAINFRAME MANAGEMENT INTERFACE Part 3	5	16	NSEC 2018 (isra17)
NC8 MAINFRAME MANAGEMENT INTERFACE Part 4	15	14	NSEC 2018 (isra17)

Web Warning (39)

Challenges descriptions	Points	Validation	Author
Big Brother is watching	1	2915	Mr.Un1k0d3r
Hacking skill are optional	1	49	Breached Company
Looking for password file	1	2927	Mr.Un1k0d3r
Area 51	1	1908	Mr.Un1k0d3r
Headache	1	2636	Mr.Un1k0d3r
Words mean something?	1	2037	Mr.Un1k0d3r
XSS Challenge 1	2	221	Mr.Un1k0d3r
Admin Portal	2	898	Mr.Un1k0d3r
Unreadable captcha	2	261	SynneR
XSS Challenge 2	2	246	Mr.Un1k0d3r
Captcha I	2	428	SynneR
Password reset	2	741	Mr.Un1k0d3r
PHP Fairy	2	516	nic-Lovin
Malicious upload	2	397	Mr.Un1k0d3r
Security thru obscurity!	2	766	Mr.Un1k0d3r
REST in peace	3	175	GoSec CTF 2014
Serial killer!	3	366	Mr.Un1k0d3r
PHP feature or 0day?	3	277	Mr.Un1k0d3r
Password reset reloaded	3	287	Mr.Un1k0d3r
Facebook will never forget this one	3	159	Mr.Un1k0d3r
XSS Challenge 3	3	125	Mr.Un1k0d3r
Looking for the flag?	3	550	Mr.Un1k0d3r
XSS Challenge 4	3	143	Mr.Un1k0d3r
Propaganda mail	4	158	NSEC 2015
Captcha III	4	24	Mbergeron
Captcha II	4	107	SynneR
Password Reset As a Service	5	28	Mr.Un1k0d3r
Timesheet As a Service	5	22	Mr.Un1k0d3r
Super Lottery	5	25	Sparkix
Read the unreadable	5	62	Mr.Un1k0d3r
Freedom Firewall	5	90	NSEC 2015
PHP feature or 0day reloaded?	6	61	Mr.Un1k0d3r
I hate this one	6	175	Mr.Un1k0d3r
Orao's factory	6	92	NSEC 2015
Serial killer part 2	6	33	HoLyVieR
XSS Challenge 5	6	93	Mr.Un1k0d3r
XPATH of hell!	7	103	Francois L. Feat Mr.Un1k0d3r
Looking for god in your life?	8	54	NSEC 2015
Secure Mail	8	61	GoSec CTF 2014

Flag statistics (127500 submitted so far)

Number of points	Number of validation	Number of points	Number of validation
18 points	5	15 points	14
14 points	47	13 points	45
12 points	121	11 points	33
10 points	250	9 points	113
8 points	773	7 points	1595
6 points	3643	5 points	3439
4 points	7640	3 points	14996
2 points	41908	1 points	52878

Shoutbox Have more questions? You can join the Slack Channel https://ringzer0-slack-invite.herokuapp.com/

2019-04-24 05:19:40 - r00t9 </script>
2019-04-22 11:38:00 - mbergeron @user12 only level 1 to 4 x86_64 are up.
2019-04-21 10:01:25 - user12 pwnage linux sandboxes down?
2019-04-15 11:41:47 - unknownxxx hello
2019-04-13 09:47:20 - sparkix @aliminate : We have a Slack.
2019-04-11 13:47:04 - alimimate hi
2019-04-11 07:47:53 - alimimate <script>alert(1)</script>
2019-04-11 07:47:42 - alimimate <script>alert(1)</script>
2019-04-11 07:47:10 - alimimate they need make this chat live > they need to use websocket
2019-04-11 07:46:34 - alimimate hello

close Intercepting SSL Traffic on RingZer0team.com

If you are using Burpsuite as your proxy, you may experiment some issue regarding interception. If you got the following error unrecognized_name here is the solution. Go to the main tab on your Burp then click on options you should now see the SSL tab. In the SSL Negociation section, check "Disable Java SNI extension (requires restart)" Restart your Burp instance and you are good to go.