Challenges

297 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	2013	Mr.Un1k0d3r
Ask your grandpa!	2	784	Mr.Un1k0d3r's Dad
Hash me reloaded	3	1177	Mr.Un1k0d3r
I hate mathematics	3	1280	Mr.Un1k0d3r
Ask your grandpa again!	4	254	Mr.Un1k0d3r's Dad
Hash breaker	4	960	Mr.Un1k0d3r
I saw a little elf	4	346	Mr.Un1k0d3r
Hash breaker reloaded	5	577	Mr.Un1k0d3r
Execute me if you can	5	304	Mr.Un1k0d3r
Read me if you can	6	298	Mr.Un1k0d3r
Hash breaker reloaded again	6	197	Mr.Un1k0d3r
Ascii Art	6	456	Mr.Un1k0d3r
Execute me if you can again	6	155	Mr.Un1k0d3r
Xor me if you can	6	304	Mr.Un1k0d3r
Number game	7	204	Mr.Un1k0d3r
Classic Sudoku	7	180	Mr.Un1k0d3r
Find the right word	7	230	Mr.Un1k0d3r

Cryptography (28)

Challenges descriptions	Points	Validation	Author
Some martian message	1	4156	Mr.Un1k0d3r
You're Drunk!	1	526	Mr.Un1k0d3r
File recovery	1	2068	Mr.Un1k0d3r
Martian message part 2	2	1885	Mr.Un1k0d3r
Fashion Victim	2	310	GoSec CTF 2014
Public key recovery	2	1036	Mr.Un1k0d3r
Hangovers and more: Bacon	3	348	SynneR
Can you understand this sentence?	3	453	Mr.Un1k0d3r
I Lost my password	3	825	Mr.Un1k0d3r
Martian message part 3	3	711	Mr.Un1k0d3r
Crypto over the network	4	105	Mr.Un1k0d3r
Crypto Leak	4	16	NSEC 2018 (Towel)
Crypto Object	4	124	GoSec CTF 2014
Encrypted Zip	4	372	Mr.Un1k0d3r
Is it a secure string?	5	188	Cedrick Chaput
Jabber	5	2	Madness
Free Flag Encrypter	5	14	Towel
Welcome to the asylum	6	46	GoSec CTF 2014
Pattern is the key	6	37	Mr.Un1k0d3r
TotalSecure Message Encrypter	6	65	Towel
Jabber Part 2	7	2	Madness
Crypto is not good as you think	8	115	Mr.Un1k0d3r
Homemade Craptography	8	2	NSEC 2018 (Holyvier)
Mars Log	8	5	NSEC 2018 (Towel)
Rusty RSA message signing service	9	10	b0n0n & An0n
Spies	9	24	CS Games 2016 (HoLyVieR)
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	234	Mr.Un1k0d3r
I made a dd of Agent Smith usb key	1	2243	Cedrick Chaput
I love cat	2	215	Mr.Un1k0d3r
Dr. Pouce	2	1638	Cedrick Chaput
Attention Dinosaure Survive	2	897	PRL
The good, the bad and the ugly	2	49	Mr.Un1k0d3r
1 / 3 Do not waste the environment	2	714	PRL
Hide my ass in my home!	2	1081	Cedrick Chaput
Hey Chuck where is the flag?	2	1054	Mr.Un1k0d3r
Meat Loaf	2	170	Ekse
Who I am?	2	633	Mr.Un1k0d3r
The words flew but writing remains	3	110	Martin Dube
2 / 3 Did you see my desktop?	3	608	PRL
Are you Twisted Insane?	3	19	Cedrick Feat Mr.Un1k0d3r
Someone steal my flag!	3	260	Mr.Un1k0d3r
802.1X Part 1	4	39	NSEC 2015
3 / 3 Suspicious account password?	4	487	PRL
Poor internet connection	4	312	Cedrick Chaput
Agent Smith reloaded	4	181	Cedrick Chaput
R.I.P MsPaint	4	61	Misker
We got breached	5	146	Mr.Un1k0d3r
Someone steal my flag again	5	74	GoSec CTF 2014
Ping pong	5	64	SynneR
Spy my girl	5	140	Cedrick Chaput
We got breached again	6	116	Mr.Un1k0d3r
Russian Crypto Roulette	6	53	SynneR
Really Depressed Protocol	7	58	SynneR
802.1X Part 2	8	29	NSEC 2015

Jail Escaping (21)

Challenges descriptions	Points	Validation	Author
Bash Jail 1	1	1317	Mr.Un1k0d3r
Bash Jail 2	2	861	Mr.Un1k0d3r
Bash Jail 3	3	512	Mr.Un1k0d3r
Bash Jail 4	4	290	Mr.Un1k0d3r
Bash Jail 5	6	122	Mr.Un1k0d3r
Bash Jail 6	8	13	Garigouster
Bash Jail 7	12	9	Garigouster
C Jail 1	1	230	Mr.Un1k0d3r
C Jail 2	2	158	Mr.Un1k0d3r
C Jail 3	3	131	Mr.Un1k0d3r
C Jail 4	5	13	Garigouster
C Jail 5	7	8	Garigouster
C Jail 6	14	4	Garigouster
PHP Jail 1	1	371	Mr.Un1k0d3r
PHP Jail 2	2	244	Mr.Un1k0d3r
PHP Jail 3	3	163	Mr.Un1k0d3r
PHP Jail 4	4	126	Mr.Un1k0d3r
PHP Jail 5	6	103	Mr.Un1k0d3r
PyJail 1	3	159	Martin Dube
PyJail 2	5	93	Martin Dube
PyJail 3	6	31	Martin Dube

JavaScript (10)

Challenges descriptions	Points	Validation	Author
Client side validation is bad!	1	4893	Mr.Un1k0d3r
Hashing is more secure	1	4286	Mr.Un1k0d3r
Then obfuscation is more secure	1	3227	Mr.Un1k0d3r
Most Secure Crypto Algo	2	984	Mr.Un1k0d3r
Valid key required	2	629	Francois Lajeunesse
Why not?	2	2807	Mr.Un1k0d3r
Why not be more secure?	5	395	Mr.Un1k0d3r
WTF Lol!	6	178	HoLyVieR
Interstellar PhoneBook	6	16	NSEC 2018 (Holyvier)
Beauty and the beast	7	28	Mr.Un1k0d3r

Malware Analysis (17)

Challenges descriptions	Points	Validation	Author
APT 1337	4	22	NSEC 2017 (Mr.Un1k0d3r)
Capture 1 Part 1	1	436	Mr.Un1k0d3r
Capture 1 Part 2	1	140	Mr.Un1k0d3r
Capture 1 Part 3	1	157	Mr.Un1k0d3r
Capture 1 Part 4	2	19	Mr.Un1k0d3r
Capture 1 Part 5	3	32	Mr.Un1k0d3r
Capture 1 Part 6	3	108	Mr.Un1k0d3r
Capture 1 Part 7	3	20	Mr.Un1k0d3r
Capture 2 Part 1	1	42	Mr.Un1k0d3r
Capture 2 Part 2	1	75	Mr.Un1k0d3r
Capture 2 Part 3	1	77	Mr.Un1k0d3r
Capture 2 Part 4	3	74	Mr.Un1k0d3r
Capture 2 Part 5	4	25	Mr.Un1k0d3r
Capture 2 Part 6	7	10	Mr.Un1k0d3r
Just Another MBR Ransomware	8	11	Towel
RAO democracy	4	36	NSEC 2017 (Mr.Un1k0d3r)
WebShell of Hell	5	7	An0n

Pwnage Linux (19)

Challenges descriptions	Points	Validation	Author
Level1 Pwnage Linux Level Up	1	456	P-Y Feat Martin Dube
Level2 Pwnage Linux Level Up	2	297	P-Y Feat Martin Dube
Remote Auth	2	96	NSEC 2015
Level3 Pwnage Linux Level Up	3	222	P-Y Feat Martin Dube
Level1 Pwnage Linux x86_64	3	158	Mr.Un1k0d3r
Level2 Pwnage Linux x86_64	4	52	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	47	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	1562	Mr.Un1k0d3r
Can you see through the star	2	945	Mr.Un1k0d3r
Crack Me 1	3	612	Mr.Un1k0d3r
Kernel introduction	3	179	Mr.Un1k0d3r
Heap allocator	3	181	NSEC 2015
Introduction to MIPS	3	236	Mr.Un1k0d3r
I never forget the Nintendo 64	3	479	Mr.Un1k0d3r
Windows x86 reversing is cool	3	556	Mr.Un1k0d3r
Intro To Sparc	3	92	Ian-Kyle Wagner
ASM Lovers	4	64	NSEC 2016
Wrong byte!	4	214	Mr.Un1k0d3r
Let's take a detour	4	61	Floesen
Altera?	4	39	NSEC 2016
Power to the people	4	30	NSEC 2015
Old School	4	41	Towel
Introduction to ARM	4	263	Mr.Un1k0d3r
Windows API for the win	4	266	Mr.Un1k0d3r
The MI7 password prompt	5	32	NSEC 2018 (Mr.Un1k0d3r)
WASM Part 1	5	36	NSEC 2018 (Isra17)
Virtual World	5	52	NSEC 2015
Smart enough?	5	87	NSEC 2015
Phenix Golgoth	5	34	Hackfest 2016
Can I speak with the kernel?	5	46	Zerosum0x0
Pwndr3 Authenticator	5	43	Pwndr3
Back to our roots	5	88	Mr.Un1k0d3r
RingZer0 Authenticator	5	183	Ekse
Update Manager	6	50	Ekse
Need a client	6	71	Mr.Un1k0d3r
Flag stealer	6	57	Ekse
I Think I forgot to take out the garbage!	6	17	Mr.Un1k0d3r
The supreme bash	7	15	NSEC 2017 (Mr.Un1k0d3r)
SOS Lib	7	18	Mr.Un1k0d3r
Buggy Bunny	7	8	Garigouster
Armed and ready	7	11	NSEC 2015
Rebate As A Service	8	30	NSEC 2016
You're not welcome	8	41	Towel
License to kill	8	0	Mr.Un1k0d3r
WASM Part 2	8	7	NSEC 2018 (Isra17)
Trolling the troll	10	28	Mr.Un1k0d3r
Keygen time again	10	24	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	15	Towel
Mars Reloaded	18	5	NSEC 2018 (Towel)

Shellcoding (7)

Challenges descriptions	Points	Validation	Author
Basics of Linux x64 shellcoding	2	408	Mr.Un1k0d3r
Linux x64 shellcoding level 2	4	212	Mr.Un1k0d3r
Linux x64 shellcoding level 3	6	166	Mr.Un1k0d3r
Linux x64 shellcoding level 4	8	131	Mr.Un1k0d3r
Linux x64 shellcoding level 5	10	94	Mr.Un1k0d3r
Linux x64 shellcoding level 6	12	78	Mr.Un1k0d3r
Linux x64 shellcoding level 7	14	43	Mr.Un1k0d3r

SQL Injection (30)

Challenges descriptions	Points	Validation	Author
Most basic SQLi pattern.	1	6009	Mr.Un1k0d3r
ACL rulezzz the world.	2	3201	Mart
Login portal 1	2	2228	Mr.Un1k0d3r
Random Login Form	2	908	Mr.Un1k0d3r
Just another login form	2	1174	Mr.Un1k0d3r
Po po po po postgresql	2	1102	Mr.Un1k0d3r
0 Day Store	3	94	NSEC 2015
Don't mess with Noemie; she hates admin!	3	507	Mr.Un1k0d3r
What's the definition of NULL	3	457	Mr.Un1k0d3r
Login portal 2	3	343	Mr.Un1k0d3r
Quote of the day	4	443	Mr.Un1k0d3r
Thinking outside the box is the key	4	390	Mr.Un1k0d3r
No more hacking for me!	4	213	Mr.Un1k0d3r
Don't Stumble in the Process	4	30	Mbergeron
Quote of the day reloaded	5	177	Mr.Un1k0d3r
Hot Single Mom	6	121	GoSec CTF 2014
Login portal 3	6	182	Mr.Un1k0d3r
When it's lite it's not necessarily easy	6	160	Mr.Un1k0d3r
Internet As A Service	7	57	Mr.Un1k0d3r
Login portal 4	7	111	Mr.Un1k0d3r
Size DOES matter	7	115	Mr.Un1k0d3r
/etc/passwd	7	120	Mr.Un1k0d3r
Groups of hacker	7	137	Mr.Un1k0d3r
The useless search tool	8	102	Mr.Un1k0d3r
Login portal 5	8	64	Mr.Un1k0d3r
stackoverflow.com lied to me... again	9	52	Corb3nik
Login portal 6	10	51	Mr.Un1k0d3r
SQHell	11	12	Sideni feat. Mbergeron
Don't Stumble in the Process Reloaded	12	6	Mbergeron
!Mysql + Brain fart	13	28	Mr.Un1k0d3r

Steganography (23)

Challenges descriptions	Points	Validation	Author
You're lost? Use the map	1	1061	Mr.Un1k0d3r
Victor you're hidding me something	1	1643	Cedrick Chaput
SigID Level 1	1	669	Guenael
Pixel Everywhere	2	80	Mr.Un1k0d3r
Hidden In Plain Sight	2	434	NSEC 2015
The vestige of dial-up Internet	2	55	Uid0
Missing Pieces	2	532	Cedrick Chaput
Brainsick	2	592	Mr.Un1k0d3r
I'm Goronyo Babad Nigerian prince	2	291	Mr.Un1k0d3r
The Sloth	2	71	Misker
Victor reloaded	2	721	Cedrick Chaput
A ghost sound	2	602	Cedrick Chaput
Look inside the house	2	655	Mr.Un1k0d3r
Stay Classy!	3	10	Sideni
Can you see through the matrix!	3	113	Mr.Un1k0d3r
Love Letter	3	134	Towel
5 beautiful colors	3	23	PublicName
Crazy Cat Lady	3	21	Madness
Your old friend Orloge Simard	3	438	Cedrick Chaput
Can you see through the matrix reloaded!	4	20	Towel
Not just 64	4	6	Madness
Walk the line!	5	106	Cedrick Chaput
SigID Level 2	6	5	Guenael

SysAdmin Linux (8)

Challenges descriptions	Points	Validation	Author
SysAdmin Part 1	1	1494	Cedrick Chaput
SysAdmin Part 2	1	1053	Cedrick Feat Mr.Un1k0d3r
SysAdmin Part 3	1	596	Mr.Un1k0d3r
SysAdmin Part 4	2	666	Cedrick Feat Mr.Un1k0d3r
SysAdmin Part 5	2	345	Cedrick Feat Mr.Un1k0d3r
SysAdmin Part 6	3	349	Cedrick Chaput
SysAdmin Part 7	4	265	Cedrick Chaput
SysAdmin Part 8	4	352	Cedrick Feat Mr.Un1k0d3r

The NC8 Reverse Engineering Track (6)

Challenges descriptions	Points	Validation	Author
NC8 MAINFRAME MANAGEMENT INTERFACE Part 1	7	25	NSEC 2018 (isra17)
NC8 MAINFRAME MANAGEMENT INTERFACE Part 2 Flag 1	3	18	NSEC 2018 (isra17)
NC8 MAINFRAME MANAGEMENT INTERFACE Part 2 Flag 2	7	18	NSEC 2018 (isra17)
NC8 MAINFRAME MANAGEMENT INTERFACE Part 2 Flag 3	10	17	NSEC 2018 (isra17)
NC8 MAINFRAME MANAGEMENT INTERFACE Part 3	5	15	NSEC 2018 (isra17)
NC8 MAINFRAME MANAGEMENT INTERFACE Part 4	15	12	NSEC 2018 (isra17)

Web Warning (38)

Challenges descriptions	Points	Validation	Author
Hacking skill are optional	1	26	Breached Company
Looking for password file	1	2730	Mr.Un1k0d3r
Area 51	1	1819	Mr.Un1k0d3r
Big Brother is watching	1	2662	Mr.Un1k0d3r
Headache	1	2504	Mr.Un1k0d3r
Words mean something?	1	1946	Mr.Un1k0d3r
PHP Fairy	2	466	nic-Lovin
Unreadable captcha	2	243	SynneR
Captcha I	2	414	SynneR
Password reset	2	717	Mr.Un1k0d3r
Admin Portal	2	858	Mr.Un1k0d3r
XSS Challenge 1	2	215	Mr.Un1k0d3r
Security thru obscurity!	2	730	Mr.Un1k0d3r
XSS Challenge 2	2	239	Mr.Un1k0d3r
Malicious upload	2	376	Mr.Un1k0d3r
XSS Challenge 4	3	137	Mr.Un1k0d3r
PHP feature or 0day?	3	247	Mr.Un1k0d3r
Serial killer!	3	344	Mr.Un1k0d3r
REST in peace	3	167	GoSec CTF 2014
Looking for the flag?	3	518	Mr.Un1k0d3r
Password reset reloaded	3	282	Mr.Un1k0d3r
XSS Challenge 3	3	119	Mr.Un1k0d3r
Facebook will never forget this one	3	152	Mr.Un1k0d3r
Captcha II	4	102	SynneR
Captcha III	4	20	Mbergeron
Propaganda mail	4	150	NSEC 2015
Password Reset As a Service	5	28	Mr.Un1k0d3r
Timesheet As a Service	5	22	Mr.Un1k0d3r
Read the unreadable	5	59	Mr.Un1k0d3r
Freedom Firewall	5	85	NSEC 2015
Orao's factory	6	89	NSEC 2015
XSS Challenge 5	6	90	Mr.Un1k0d3r
PHP feature or 0day reloaded?	6	58	Mr.Un1k0d3r
Serial killer part 2	6	31	HoLyVieR
I hate this one	6	162	Mr.Un1k0d3r
XPATH of hell!	7	102	Francois L. Feat Mr.Un1k0d3r
Secure Mail	8	59	GoSec CTF 2014
Looking for god in your life?	8	52	NSEC 2015

Flag statistics (119496 submitted so far)

Number of points	Number of validation	Number of points	Number of validation
18 points	5	15 points	12
14 points	47	13 points	43
12 points	116	11 points	33
10 points	244	9 points	107
8 points	747	7 points	1533
6 points	3477	5 points	3235
4 points	7169	3 points	14178
2 points	39404	1 points	49146

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

2019-01-11 20:25:18 - Mr.Prontissimo @ghost_rider_0x90: Which Challenge ? Are you using Requests module ?
2019-01-07 10:41:49 - x00T hi all
2018-12-29 23:32:55 - Barberousse @ghost_rider_0x90 i've done all my coding challenges in python or shell. The language isn't the problem. You probably need to optimize your program
2018-12-25 10:49:16 - 4dla3 @jtnydv make writeups
2018-12-25 08:21:16 - jtnydv How to get coins?
2018-12-17 10:42:40 - Mastermind Why I can't solve any prob.
2018-12-12 12:06:13 - ghost_rider_0x90 For coding challenges there is no way i can make python do in 2 sec it takes arnd 4-5 sec. Any workaround?
2018-12-11 15:24:29 - yama_tan ?
2018-12-11 09:53:49 - ghost_rider_0x90 Anyone here ?
2018-12-06 23:27:04 - dandan I think "SysAdmin Part 1" is broken

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.