Challenges

325 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 Up
Hot Single Mom sandbox is Up	Bash Jail 1 sandbox is Up

Coding Challenges (17)

Challenges descriptions	Points	Validation	Author
Hash me please	2	2639	Mr.Un1k0d3r
Ask your grandpa!	2	990	Mr.Un1k0d3r's Dad
Hash me reloaded	3	1486	Mr.Un1k0d3r
I hate mathematics	3	1578	Mr.Un1k0d3r
Ask your grandpa again!	4	326	Mr.Un1k0d3r's Dad
Hash breaker	4	1205	Mr.Un1k0d3r
I saw a little elf	4	433	Mr.Un1k0d3r
Hash breaker reloaded	5	704	Mr.Un1k0d3r
Execute me if you can	5	358	Mr.Un1k0d3r
Read me if you can	6	377	Mr.Un1k0d3r
Hash breaker reloaded again	6	240	Mr.Un1k0d3r
Ascii Art	6	563	Mr.Un1k0d3r
Execute me if you can again	6	179	Mr.Un1k0d3r
Xor me if you can	6	358	Mr.Un1k0d3r
Number game	7	276	Mr.Un1k0d3r remade by theindian
Classic Sudoku	7	235	Mr.Un1k0d3r remade by dread_knight
Find the right word	7	291	Mr.Un1k0d3r

Cryptography (32)

Challenges descriptions	Points	Validation	Author
Some martian message	1	5577	Mr.Un1k0d3r
You're Drunk!	1	1301	Mr.Un1k0d3r
File recovery	1	2647	Mr.Un1k0d3r
Public key recovery	2	1312	Mr.Un1k0d3r
Fashion Victim	2	421	GoSec CTF 2014
Martian message part 2	2	2399	Mr.Un1k0d3r
Can you understand this sentence?	3	588	Mr.Un1k0d3r
Let's Play Scrabble!	3	32	Madness
I Lost my password	3	992	Mr.Un1k0d3r
Martian message part 3	3	902	Mr.Un1k0d3r
Hangovers and more: Bacon	3	456	SynneR
Crypto Leak	4	41	NSEC 2018 (Towel)
Crypto Object	4	165	GoSec CTF 2014
Crypto over the network	4	105	Mr.Un1k0d3r
Encrypted Zip	4	490	Mr.Un1k0d3r
Let's Play Scrabble! Part 2	5	17	Madness
Jabber	5	7	Madness
Is it a secure string?	5	227	Cedrick Chaput
Free Flag Encrypter	5	14	Towel
Pattern is the key	6	39	Mr.Un1k0d3r
TotalSecure Message Encrypter	6	84	Towel
Welcome to the asylum	6	52	GoSec CTF 2014
Homemade craptography #2	7	8	holyvier(ft. large software company)
Jabber Part 2	7	6	Madness
Crypto is not good as you think	8	152	Mr.Un1k0d3r
Mars Log	8	7	NSEC 2018 (Towel)
Homemade Craptography	8	6	NSEC 2018 (Holyvier)
Spies	9	30	CS Games 2016 (HoLyVieR)
Rusty RSA message signing service	9	10	b0n0n & An0n
TotalSecure Message Encrypter V2	10	17	Towel
Polly Wants a Cracker	10	2	Madness
Unicorn As A Service	11	7	Towel

Exotic Data Storage (4)

Challenges descriptions	Points	Validation	Author
Just another login form	2	1382	Mr.Un1k0d3r
DON'T login as admin	2	22	mbergeron
I forgot my password	3	22	mbergeron
Inspiration	6	28	NSEC 2019 (becojo)

Forensics (28)

Challenges descriptions	Points	Validation	Author
Who I am part 2	1	440	Mr.Un1k0d3r
I made a dd of Agent Smith usb key	1	2774	Cedrick Chaput
I love cat	2	481	Mr.Un1k0d3r
Dr. Pouce	2	2063	Cedrick Chaput
Attention Dinosaure Survive	2	1121	PRL
The good, the bad and the ugly	2	66	Mr.Un1k0d3r
1 / 3 Do not waste the environment	2	863	PRL
Hide my ass in my home!	2	1313	Cedrick Chaput
Hey Chuck where is the flag?	2	1291	Mr.Un1k0d3r
Meat Loaf	2	209	Ekse
Who I am?	2	816	Mr.Un1k0d3r
The words flew but writing remains	3	136	Martin Dube
2 / 3 Did you see my desktop?	3	725	PRL
Are you Twisted Insane?	3	26	Cedrick Feat Mr.Un1k0d3r
Someone steal my flag!	3	338	Mr.Un1k0d3r
802.1X Part 1	4	55	NSEC 2015
3 / 3 Suspicious account password?	4	593	PRL
Poor internet connection	4	359	Cedrick Chaput
Agent Smith reloaded	4	233	Cedrick Chaput
R.I.P MsPaint	4	90	Misker
We got breached	5	184	Mr.Un1k0d3r
Someone steal my flag again	5	113	GoSec CTF 2014
Ping pong	5	79	SynneR
Spy my girl	5	175	Cedrick Chaput
We got breached again	6	137	Mr.Un1k0d3r
Russian Crypto Roulette	6	63	SynneR
Really Depressed Protocol	7	70	SynneR
802.1X Part 2	8	41	NSEC 2015

Jail Escaping (21)

Challenges descriptions	Points	Validation	Author
Bash Jail 1	1	1944	Mr.Un1k0d3r
Bash Jail 2	2	1243	Mr.Un1k0d3r
Bash Jail 3	3	698	Mr.Un1k0d3r
Bash Jail 4	4	379	Mr.Un1k0d3r
Bash Jail 5	6	162	Mr.Un1k0d3r
Bash Jail 6	8	20	Garigouster
Bash Jail 7	12	14	Garigouster
C Jail 1	1	311	Mr.Un1k0d3r
C Jail 2	2	208	Mr.Un1k0d3r
C Jail 3	3	173	Mr.Un1k0d3r
C Jail 4	5	16	Garigouster
C Jail 5	7	10	Garigouster
C Jail 6	14	5	Garigouster
PHP Jail 1	1	501	Mr.Un1k0d3r
PHP Jail 2	2	329	Mr.Un1k0d3r
PHP Jail 3	3	226	Mr.Un1k0d3r
PHP Jail 4	4	172	Mr.Un1k0d3r
PHP Jail 5	6	142	Mr.Un1k0d3r
PyJail 1	3	199	Martin Dube
PyJail 2	5	112	Martin Dube
PyJail 3	6	37	Martin Dube

JavaScript (10)

Challenges descriptions	Points	Validation	Author
Client side validation is bad!	1	6242	Mr.Un1k0d3r
Hashing is more secure	1	5424	Mr.Un1k0d3r
Then obfuscation is more secure	1	4111	Mr.Un1k0d3r
Most Secure Crypto Algo	2	1438	Mr.Un1k0d3r
Valid key required	2	818	Francois Lajeunesse
Why not?	2	3236	Mr.Un1k0d3r
Why not be more secure?	5	506	Mr.Un1k0d3r
WTF Lol!	6	239	HoLyVieR
Interstellar PhoneBook	6	30	NSEC 2018 (Holyvier)
Beauty and the beast	7	34	Mr.Un1k0d3r

Malware Analysis (17)

Challenges descriptions	Points	Validation	Author
APT 1337	4	37	NSEC 2017 (Mr.Un1k0d3r)
Capture 1 Part 1	1	552	Mr.Un1k0d3r
Capture 1 Part 2	1	184	Mr.Un1k0d3r
Capture 1 Part 3	1	207	Mr.Un1k0d3r
Capture 1 Part 4	2	25	Mr.Un1k0d3r
Capture 1 Part 5	3	49	Mr.Un1k0d3r
Capture 1 Part 6	3	133	Mr.Un1k0d3r
Capture 1 Part 7	3	25	Mr.Un1k0d3r
Capture 2 Part 1	1	52	Mr.Un1k0d3r
Capture 2 Part 2	1	92	Mr.Un1k0d3r
Capture 2 Part 3	1	93	Mr.Un1k0d3r
Capture 2 Part 4	3	92	Mr.Un1k0d3r
Capture 2 Part 5	4	34	Mr.Un1k0d3r
Capture 2 Part 6	7	14	Mr.Un1k0d3r
Just Another MBR Ransomware	8	17	Towel
RAO democracy	4	47	NSEC 2017 (Mr.Un1k0d3r)
WebShell of Hell	5	12	An0n

Pwnage Linux (20)

Challenges descriptions	Points	Validation	Author
Level1 Pwnage Linux Level Up	1	583	P-Y Feat Martin Dube
Level2 Pwnage Linux Level Up	2	365	P-Y Feat Martin Dube
Remote Auth	2	96	NSEC 2015
The Vault	3	21	Mr.Un1k0d3r
Level1 Pwnage Linux x86_64	3	180	Mr.Un1k0d3r
Level3 Pwnage Linux Level Up	3	263	P-Y Feat Martin Dube
Sometime there is no buffer overflow	4	70	Mr.Un1k0d3r
Can you get the service password	4	110	Mr.Un1k0d3r
Level2 Pwnage Linux x86_64	4	62	Mr.Un1k0d3r
Friendly race	5	21	Garigouster
Level4 Pwnage Linux Level Up	5	125	Mr.Un1k0d3r
Jack the heaper	6	18	uaf.io
RPCFTW!	6	28	NSEC 2015
Level4 Pwnage Linux x86_64	7	34	Mr.Un1k0d3r
Level3 Pwnage Linux x86_64	7	57	Mr.Un1k0d3r
Just another useless service	8	34	NSEC 2015
Take over the Virtual World	8	29	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 (52)

Challenges descriptions	Points	Validation	Author
Time to learn x86 ASM & gdb	2	1897	Mr.Un1k0d3r
Can you see through the star	2	1132	Mr.Un1k0d3r
See No Evil - Part 1	2	76	alxbl
Crack Me 1	3	723	Mr.Un1k0d3r
Heap allocator	3	250	NSEC 2015
Intro To Sparc	3	153	Ian-Kyle Wagner
Kernel introduction	3	230	Mr.Un1k0d3r
See No Evil - Part 2	3	60	alxbl
See No Evil - Part 3	3	59	alxbl
Introduction to MIPS	3	295	Mr.Un1k0d3r
Windows x86 reversing is cool	3	653	Mr.Un1k0d3r
I never forget the Nintendo 64	3	585	Mr.Un1k0d3r
Power to the people	4	52	NSEC 2015
Altera?	4	53	NSEC 2016
ASM Lovers	4	79	NSEC 2016
See No Evil - Part 5	4	39	alxbl
Old School	4	59	Towel
I love tea!	4	10	nic-lovin
See No Evil - Part 4	4	44	alxbl
Let's take a detour	4	77	Floesen
Windows API for the win	4	301	Mr.Un1k0d3r
Wrong byte!	4	252	Mr.Un1k0d3r
Introduction to ARM	4	326	Mr.Un1k0d3r
Virtual World	5	60	NSEC 2015
Phenix Golgoth	5	43	Hackfest 2016
WASM Part 1	5	52	NSEC 2018 (Isra17)
RingZer0 Authenticator	5	221	Ekse
Back to our roots	5	100	Mr.Un1k0d3r
Can I speak with the kernel?	5	61	Zerosum0x0
The MI7 password prompt	5	50	NSEC 2018 (Mr.Un1k0d3r)
Smart enough?	5	101	NSEC 2015
Pwndr3 Authenticator	5	50	Pwndr3
I Think I forgot to take out the garbage!	6	18	Mr.Un1k0d3r
Need a client	6	71	Mr.Un1k0d3r
Flag stealer	6	65	Ekse
Update Manager	6	52	Ekse
The supreme bash	7	21	NSEC 2017 (Mr.Un1k0d3r)
SOS Lib	7	22	Mr.Un1k0d3r
Buggy Bunny	7	10	Garigouster
Armed and ready	7	11	NSEC 2015
Rebate As A Service	8	37	NSEC 2016
You're not welcome	8	50	Towel
WASM Part 2	8	8	NSEC 2018 (Isra17)
License to kill	8	3	Mr.Un1k0d3r
The Matrix	9	10	Towel
Trolling the troll	10	30	Mr.Un1k0d3r
Keygen time again	10	30	GoSec CTF 2014
The unknown challenge	11	16	Mr.Un1k0d3r
WASM Part 3	12	6	NSEC 2018 (Isra17)
You're not welcome again!	12	20	Towel
The oracle	13	17	Towel
Mars Reloaded	18	9	NSEC 2018 (Towel)

Shellcoding (7)

Challenges descriptions	Points	Validation	Author
Basics of Linux x64 shellcoding	2	481	Mr.Un1k0d3r
Linux x64 shellcoding level 2	4	246	Mr.Un1k0d3r
Linux x64 shellcoding level 3	6	193	Mr.Un1k0d3r
Linux x64 shellcoding level 4	8	154	Mr.Un1k0d3r
Linux x64 shellcoding level 5	10	107	Mr.Un1k0d3r
Linux x64 shellcoding level 6	12	91	Mr.Un1k0d3r
Linux x64 shellcoding level 7	14	51	Mr.Un1k0d3r

SQL Injection (32)

Challenges descriptions	Points	Validation	Author
Most basic SQLi pattern.	1	7811	Mr.Un1k0d3r
Random Login Form	2	1459	Mr.Un1k0d3r
Po po po po postgresql	2	1592	Mr.Un1k0d3r
Login portal 1	2	2877	Mr.Un1k0d3r
ACL rulezzz the world.	2	3932	Mart
Login portal 2	3	518	Mr.Un1k0d3r
Don't mess with Noemie; she hates admin!	3	709	Mr.Un1k0d3r
0 Day Store	3	116	NSEC 2015
What's the definition of NULL	3	617	Mr.Un1k0d3r
Don't Stumble in the Process	4	44	mbergeron
Brain Teaser 1	4	21	Sideni
Quote of the day	4	561	Mr.Un1k0d3r
No more hacking for me!	4	275	Mr.Un1k0d3r
Thinking outside the box is the key	4	480	Mr.Un1k0d3r
Quote of the day reloaded	5	222	Mr.Un1k0d3r
When it's lite it's not necessarily easy	6	198	Mr.Un1k0d3r
Login portal 3	6	226	Mr.Un1k0d3r
Hot Single Mom	6	153	GoSec CTF 2014
Internet As A Service	7	100	Mr.Un1k0d3r
Size DOES matter	7	129	Mr.Un1k0d3r
Brain Teaser 2	7	13	Sideni
/etc/passwd	7	134	Mr.Un1k0d3r
Groups of hacker	7	151	Mr.Un1k0d3r
Login portal 4	7	139	Mr.Un1k0d3r
Login portal 5	8	69	Mr.Un1k0d3r
The useless search tool	8	115	Mr.Un1k0d3r
stackoverflow.com lied to me... again	9	70	Corb3nik
Doctor Who ?	9	8	Sideni
Login portal 6	10	57	Mr.Un1k0d3r
SQHell	11	14	Sideni feat. mbergeron
Don't Stumble in the Process Reloaded	12	8	mbergeron
!Mysql + Brain fart	13	30	Mr.Un1k0d3r

Steganography (26)

Challenges descriptions	Points	Validation	Author
You're lost? Use the map	1	1429	Mr.Un1k0d3r
Victor you're hidding me something	1	2123	Cedrick Chaput
SigID Level 1	1	861	Guenael
I'm Goronyo Babad Nigerian prince	2	437	Mr.Un1k0d3r
Hidden In Plain Sight	2	550	NSEC 2015
The vestige of dial-up Internet	2	78	Uid0
Missing Pieces	2	667	Cedrick Chaput
Brainsick	2	740	Mr.Un1k0d3r
Pixel Everywhere	2	104	Mr.Un1k0d3r
The Sloth	2	98	Misker
Victor reloaded	2	881	Cedrick Chaput
A ghost sound	2	713	Cedrick Chaput
Look inside the house	2	804	Mr.Un1k0d3r
Crazy Cat Lady	3	54	Madness
Love Letter	3	166	Towel
5 beautiful colors	3	36	PublicName
Can you see through the matrix!	3	130	Mr.Un1k0d3r
Your old friend Orloge Simard	3	523	Cedrick Chaput
Even the Odds	4	10	alxbl
Not just 64	4	12	Madness
Stay Classy!	4	17	Sideni
Can you see through the matrix reloaded!	4	27	Towel
Walk the line!	5	129	Cedrick Chaput
Stop the violence	5	16	jusb3
Stop the violence 2	5	5	jusb3
SigID Level 2	6	11	Guenael

SysAdmin Linux (8)

Challenges descriptions	Points	Validation	Author
SysAdmin Part 1	1	2113	Cedrick Chaput
SysAdmin Part 2	1	1517	Cedrick Feat Mr.Un1k0d3r
SysAdmin Part 3	1	928	Mr.Un1k0d3r
SysAdmin Part 4	2	906	Cedrick Feat Mr.Un1k0d3r
SysAdmin Part 5	2	554	Cedrick Feat Mr.Un1k0d3r
SysAdmin Part 6	3	524	Cedrick Chaput
SysAdmin Part 7	4	427	Cedrick Chaput
SysAdmin Part 8	4	497	Cedrick Feat Mr.Un1k0d3r

The NC8 Reverse Engineering Track (6)

Challenges descriptions	Points	Validation	Author
NC8 MAINFRAME MANAGEMENT INTERFACE Part 1	7	46	NSEC 2018 (isra17)
NC8 MAINFRAME MANAGEMENT INTERFACE Part 2 Flag 1	3	26	NSEC 2018 (isra17)
NC8 MAINFRAME MANAGEMENT INTERFACE Part 2 Flag 2	7	24	NSEC 2018 (isra17)
NC8 MAINFRAME MANAGEMENT INTERFACE Part 2 Flag 3	10	25	NSEC 2018 (isra17)
NC8 MAINFRAME MANAGEMENT INTERFACE Part 3	5	18	NSEC 2018 (isra17)
NC8 MAINFRAME MANAGEMENT INTERFACE Part 4	15	14	NSEC 2018 (isra17)

Web Warning (45)

Challenges descriptions	Points	Validation	Author
Area 51	1	2340	Mr.Un1k0d3r
Looking for password file	1	3503	Mr.Un1k0d3r
Hacking skill are optional	1	109	Breached Company
Headache	1	3107	Mr.Un1k0d3r
Words mean something?	1	2455	Mr.Un1k0d3r
Big Brother is watching	1	3438	Mr.Un1k0d3r
Password reset	2	819	Mr.Un1k0d3r
Admin Portal	2	1042	Mr.Un1k0d3r
Unreadable captcha	2	337	SynneR
XSS Challenge 1	2	311	Mr.Un1k0d3r
XSS Challenge 2	2	326	Mr.Un1k0d3r
Captcha I	2	471	SynneR
PHP Fairy	2	687	nic-Lovin
Malicious upload	2	509	Mr.Un1k0d3r
Security thru obscurity!	2	878	Mr.Un1k0d3r
REST in peace	3	196	GoSec CTF 2014
JWT pitfall 1	3	37	Mr.Un1k0d3r
Captcha IV	3	14	FadedForEver
PHP feature or 0day?	3	357	Mr.Un1k0d3r
Password reset reloaded	3	321	Mr.Un1k0d3r
Facebook will never forget this one	3	190	Mr.Un1k0d3r
Serial killer!	3	411	Mr.Un1k0d3r
Looking for the flag?	3	642	Mr.Un1k0d3r
XSS Challenge 4	3	178	Mr.Un1k0d3r
XSS Challenge 3	3	159	Mr.Un1k0d3r
Propaganda mail	4	208	NSEC 2015
Captcha III	4	35	mbergeron
Captcha II	4	119	SynneR
The archive	5	15	holyvier (NSEC 2019)
Lost API	5	20	holyvier (NSEC 2019)
Password Reset As a Service	5	47	Mr.Un1k0d3r
Super Lottery	5	54	davidlebr1
Timesheet As a Service	5	22	Mr.Un1k0d3r
Read the unreadable	5	93	Mr.Un1k0d3r
Freedom Firewall	5	101	NSEC 2015
I hate this one	6	201	Mr.Un1k0d3r
XSS Challenge 5	6	111	Mr.Un1k0d3r
Serial killer part 2	6	39	HoLyVieR
Orao's factory	6	100	NSEC 2015
PHP feature or 0day reloaded?	6	68	Mr.Un1k0d3r
XPATH of hell!	7	122	Francois L. Feat Mr.Un1k0d3r
Super Lottery Reloaded	7	12	davidlebr1 Feat mbergeron
Ping It!	7	14	mnadeau
Looking for god in your life?	8	61	NSEC 2015
Secure Mail	8	69	GoSec CTF 2014

Flag statistics (154868 submitted so far)

Number of points	Number of validation	Number of points	Number of validation
18 points	9	15 points	14
14 points	56	13 points	47
12 points	139	11 points	37
10 points	282	9 points	149
8 points	898	7 points	1983
6 points	4282	5 points	4150
4 points	9277	3 points	18272
2 points	50504	1 points	64769

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.