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You have the opportunity to submit a write up for every challenge you successfully complete. Every time your write up is approved your earn RingZer0Gold. It's possible for you to exchange this gold for hints. The main goal of this initiative is to stimulate people to submit write up and share how they solved a challenge with other people. When you finish a challenge, you have the ability to view all published write up for the challenge. This way you can learn many ways to solve a unique challenge.

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

Challenges


Coding challenges (17)

Challenges descriptions Points Validation Author
Hash me please 2 1069 Mr.Un1k0d3r
Ask your grandpa! 2 405 Mr.Un1k0d3r's Dad
Hash me reloaded 3 671 Mr.Un1k0d3r
I hate mathematics 3 747 Mr.Un1k0d3r
Ask your grandpa again! 4 131 Mr.Un1k0d3r's Dad
Hash breaker 4 571 Mr.Un1k0d3r
I saw a little elf 4 235 Mr.Un1k0d3r
Hash breaker reloaded 5 352 Mr.Un1k0d3r
Execute me if you can 5 216 Mr.Un1k0d3r
Read me if you can 6 195 Mr.Un1k0d3r
Hash breaker reloaded again 6 129 Mr.Un1k0d3r
Ascii Art 6 310 Mr.Un1k0d3r
Execute me if you can again 6 112 Mr.Un1k0d3r
Xor me if you can 6 204 Mr.Un1k0d3r
Number game 7 163 Mr.Un1k0d3r
Classic Sudoku 7 144 Mr.Un1k0d3r
Find the right word 7 141 Mr.Un1k0d3r

Cryptography (20)

Challenges descriptions Points Validation Author
Some martian message 1 2191 Mr.Un1k0d3r
File recovery 1 1147 Mr.Un1k0d3r
Public key recovery 2 708 Mr.Un1k0d3r
Fashion Victim 2 161 GoSec CTF 2014
Martian message part 2 2 875 Mr.Un1k0d3r
Can you understand this sentence? 3 280 Mr.Un1k0d3r
Martian message part 3 3 397 Mr.Un1k0d3r
Hangovers and more: Bacon 3 169 SynneR
I Lost my password 3 511 Mr.Un1k0d3r
Crypto over the network 4 85 Mr.Un1k0d3r
Crypto Object 4 69 GoSec CTF 2014
Encrypted Zip 4 218 Mr.Un1k0d3r
Is it a secure string? 5 114 Cedrick Chaput
TotalSecure Message Encrypter 6 39 Towel
Welcome to the asylum 6 32 GoSec CTF 2014
Pattern is the key 6 23 Mr.Un1k0d3r
Crypto is not good as you think 8 76 Mr.Un1k0d3r
Spies 9 12 CS Games 2016 (HoLyVieR)
Rusty RSA message signing service 9 6 b0n0n & An0n
TotalSecure Message Encrypter V2 10 8 Towel

Forensics (27)

Challenges descriptions Points Validation Author
I made a dd of Agent Smith usb key 1 1361 Cedrick Chaput
Who I am part 2 1 64 Mr.Un1k0d3r
I love cat 2 59 Mr.Un1k0d3r
Dr. Pouce 2 951 Cedrick Chaput
1 / 3 Do not waste the environment 2 415 PRL
Meat Loaf 2 82 Ekse
Hide my ass in my home! 2 677 Cedrick Chaput
Who I am? 2 356 Mr.Un1k0d3r
Hey Chuck where is the flag? 2 670 Mr.Un1k0d3r
The good, the bad and the ugly 2 31 Mr.Un1k0d3r
Attention Dinosaure Survive 2 548 PRL
Someone steal my flag! 3 163 Mr.Un1k0d3r
Are you Twisted Insane? 3 16 Cedrick Feat Mr.Un1k0d3r
2 / 3 Did you see my desktop? 3 363 PRL
The words flew but writing remains 3 55 Martin Dube
Agent Smith reloaded 4 113 Cedrick Chaput
Poor internet connection 4 223 Cedrick Chaput
802.1X Part 1 4 11 NSEC 2015
3 / 3 Suspicious account password? 4 290 PRL
Someone steal my flag again 5 42 GoSec CTF 2014
We got breached 5 93 Mr.Un1k0d3r
Ping pong 5 33 SynneR
Spy my girl 5 90 Cedrick Chaput
We got breached again 6 78 Mr.Un1k0d3r
Russian Crypto Roulette 6 28 SynneR
Really Depressed Protocol 7 38 SynneR
802.1X Part 2 8 6 NSEC 2015

Jail Escaping (21)

Challenges descriptions Points Validation Author
Bash Jail 1 1 546 Mr.Un1k0d3r
Bash Jail 2 2 383 Mr.Un1k0d3r
Bash Jail 3 3 238 Mr.Un1k0d3r
Bash Jail 4 4 138 Mr.Un1k0d3r
Bash Jail 5 6 58 Mr.Un1k0d3r
Bash Jail 6 8 3 Garigouster
Bash Jail 7 12 2 Garigouster
C Jail 1 1 138 Mr.Un1k0d3r
C Jail 2 2 87 Mr.Un1k0d3r
C Jail 3 3 68 Mr.Un1k0d3r
C Jail 4 5 2 Garigouster
C Jail 5 7 0 Garigouster
C Jail 6 14 0 Garigouster
PHP Jail 1 1 220 Mr.Un1k0d3r
PHP Jail 2 2 143 Mr.Un1k0d3r
PHP Jail 3 3 97 Mr.Un1k0d3r
PHP Jail 4 4 77 Mr.Un1k0d3r
PHP Jail 5 6 57 Mr.Un1k0d3r
PyJail 1 3 112 Martin Dube
PyJail 2 5 65 Martin Dube
PyJail 3 6 18 Martin Dube

JavaScript (9)

Challenges descriptions Points Validation Author
Client side validation is bad! 1 2897 Mr.Un1k0d3r
Hashing is more secure 1 2538 Mr.Un1k0d3r
Then obfuscation is more secure 1 1840 Mr.Un1k0d3r
Why not? 2 1744 Mr.Un1k0d3r
Valid key required 2 348 Francois Lajeunesse
Most Secure Crypto Algo 2 504 Mr.Un1k0d3r
Why not be more secure? 5 231 Mr.Un1k0d3r
WTF Lol! 6 69 HoLyVieR
Beauty and the beast 7 9 Mr.Un1k0d3r

Malware Analysis (14)

Challenges descriptions Points Validation Author
Capture 1 Part 1 1 232 Mr.Un1k0d3r
Capture 1 Part 2 1 72 Mr.Un1k0d3r
Capture 1 Part 3 1 81 Mr.Un1k0d3r
Capture 1 Part 4 2 18 Mr.Un1k0d3r
Capture 1 Part 5 3 11 Mr.Un1k0d3r
Capture 1 Part 6 3 62 Mr.Un1k0d3r
Capture 1 Part 7 3 14 Mr.Un1k0d3r
Capture 2 Part 1 1 27 Mr.Un1k0d3r
Capture 2 Part 2 1 42 Mr.Un1k0d3r
Capture 2 Part 3 1 41 Mr.Un1k0d3r
Capture 2 Part 4 3 43 Mr.Un1k0d3r
Capture 2 Part 5 4 16 Mr.Un1k0d3r
Capture 2 Part 6 7 5 Mr.Un1k0d3r
WebShell of Hell 5 2 An0n

Pwnage Linux (19)

Challenges descriptions Points Validation Author
Level1 Pwnage Linux Level Up 1 401 P-Y Feat Martin Dube
Level2 Pwnage Linux Level Up 2 270 P-Y Feat Martin Dube
Remote Auth 2 82 NSEC 2015
Level3 Pwnage Linux Level Up 3 195 P-Y Feat Martin Dube
Level1 Pwnage Linux x86_64 3 116 Mr.Un1k0d3r
Level2 Pwnage Linux x86_64 4 42 Mr.Un1k0d3r
Sometime there is no buffer overflow 4 48 Mr.Un1k0d3r
Can you get the service password 4 94 Mr.Un1k0d3r
Level4 Pwnage Linux Level Up 5 95 Mr.Un1k0d3r
Friendly race 5 20 Garigouster
RPCFTW! 6 22 NSEC 2015
Jack the heaper 6 11 uaf.io
Level3 Pwnage Linux x86_64 7 37 Mr.Un1k0d3r
Level4 Pwnage Linux x86_64 7 23 Mr.Un1k0d3r
Just another useless service 8 32 NSEC 2015
Take over the Virtual World 8 24 NSEC 2015
Base64 As A Service 8 23 Guilt
Base64 As A Service Reloaded 9 18 Guilt
Delivery As A Service 10 12 NSEC 2016

Reverse Engineering (37)

Challenges descriptions Points Validation Author
Time to learn x86 ASM & gdb 2 983 Mr.Un1k0d3r
Can you see through the star 2 632 Mr.Un1k0d3r
Crack Me 1 3 428 Mr.Un1k0d3r
Windows x86 reversing is cool 3 384 Mr.Un1k0d3r
Kernel introduction 3 107 Mr.Un1k0d3r
I never forget the Nintendo 64 3 326 Mr.Un1k0d3r
Introduction to MIPS 3 156 Mr.Un1k0d3r
Heap allocator 3 80 NSEC 2015
Wrong byte! 4 151 Mr.Un1k0d3r
Power to the people 4 19 NSEC 2015
Let's take a detour 4 39 Floesen
ASM Lovers 4 29 NSEC 2016
Altera? 4 18 NSEC 2016
Windows API for the win 4 172 Mr.Un1k0d3r
Introduction to ARM 4 166 Mr.Un1k0d3r
Phenix Golgoth 5 14 Hackfest 2016
Smart enough? 5 56 NSEC 2015
RingZer0 Authenticator 5 131 Ekse
Back to our roots 5 64 Mr.Un1k0d3r
Can I speak with the kernel? 5 21 Zerosum0x0
Virtual World 5 51 NSEC 2015
Pwndr3 Authenticator 5 23 Pwndr3
Need a client 6 63 Mr.Un1k0d3r
Update Manager 6 36 Ekse
Flag stealer 6 35 Ekse
I Think I forgot to take out the garbage! 6 12 Mr.Un1k0d3r
Armed and ready 7 6 NSEC 2015
Buggy Bunny 7 3 Garigouster
SOS Lib 7 11 Mr.Un1k0d3r
License to kill 8 0 Mr.Un1k0d3r
Rebate As A Service 8 21 NSEC 2016
You're not welcome 8 25 Towel
Keygen time again 10 13 GoSec CTF 2014
Trolling the troll 10 20 Mr.Un1k0d3r
The unknown challenge 11 10 Mr.Un1k0d3r
You're not welcome again! 12 8 Towel
The oracle 13 6 Towel

Shellcoding (7)

Challenges descriptions Points Validation Author
Basics of Linux x64 shellcoding 2 297 Mr.Un1k0d3r
Linux x64 shellcoding level 2 4 151 Mr.Un1k0d3r
Linux x64 shellcoding level 3 6 121 Mr.Un1k0d3r
Linux x64 shellcoding level 4 8 99 Mr.Un1k0d3r
Linux x64 shellcoding level 5 10 73 Mr.Un1k0d3r
Linux x64 shellcoding level 6 12 62 Mr.Un1k0d3r
Linux x64 shellcoding level 7 14 31 Mr.Un1k0d3r

SQL Injection (26)

Challenges descriptions Points Validation Author
Most basic SQLi pattern. 1 3434 Mr.Un1k0d3r
ACL rulezzz the world. 2 1727 Mart
Login portal 1 2 1048 Mr.Un1k0d3r
Random Login Form 2 374 Mr.Un1k0d3r
Just another login form 2 573 Mr.Un1k0d3r
Po po po po postgresql 2 556 Mr.Un1k0d3r
0 Day Store 3 45 NSEC 2015
Don't mess with Noemie; she hates admin! 3 179 Mr.Un1k0d3r
What's the definition of NULL 3 205 Mr.Un1k0d3r
Login portal 2 3 164 Mr.Un1k0d3r
No more hacking for me! 4 114 Mr.Un1k0d3r
Quote of the day 4 237 Mr.Un1k0d3r
Thinking outside the box is the key 4 223 Mr.Un1k0d3r
Quote of the day reloaded 5 88 Mr.Un1k0d3r
Login portal 3 6 109 Mr.Un1k0d3r
Hot Single Mom 6 76 GoSec CTF 2014
When it's lite it's not necessarily easy 6 105 Mr.Un1k0d3r
Groups of hacker 7 67 Mr.Un1k0d3r
/etc/passwd 7 78 Mr.Un1k0d3r
Size DOES matter 7 77 Mr.Un1k0d3r
Login portal 4 7 62 Mr.Un1k0d3r
Internet As A Service 7 17 Mr.Un1k0d3r
The useless search tool 8 50 Mr.Un1k0d3r
Login portal 5 8 41 Mr.Un1k0d3r
Login portal 6 10 28 Mr.Un1k0d3r
!Mysql + Brain fart 13 14 Mr.Un1k0d3r

Steganography (19)

Challenges descriptions Points Validation Author
You're lost? Use the map 1 499 Mr.Un1k0d3r
SigID Level 1 1 294 Guenael
Victor you're hidding me something 1 958 Cedrick Chaput
Hidden In Plain Sight 2 214 NSEC 2015
Brainsick 2 328 Mr.Un1k0d3r
Missing Pieces 2 271 Cedrick Chaput
I'm Goronyo Babad Nigerian prince 2 92 Mr.Un1k0d3r
Victor reloaded 2 435 Cedrick Chaput
The vestige of dial-up Internet 2 8 Uid0
A ghost sound 2 344 Cedrick Chaput
Look inside the house 2 366 Mr.Un1k0d3r
Pixel Everywhere 2 47 Mr.Un1k0d3r
Love Letter 3 61 Towel
5 beautiful colors 3 9 PublicName
Can you see through the matrix! 3 73 Mr.Un1k0d3r
Your old friend Orloge Simard 3 254 Cedrick Chaput
Can you see through the matrix reloaded! 4 7 Towel
Walk the line! 5 64 Cedrick Chaput
SigID Level 2 6 2 Guenael

SysAdmin Linux (8)

Challenges descriptions Points Validation Author
SysAdmin Part 1 1 1040 Cedrick Chaput
SysAdmin Part 2 1 711 Cedrick Feat Mr.Un1k0d3r
SysAdmin Part 3 1 352 Mr.Un1k0d3r
SysAdmin Part 4 2 461 Cedrick Feat Mr.Un1k0d3r
SysAdmin Part 5 2 188 Cedrick Feat Mr.Un1k0d3r
SysAdmin Part 6 3 202 Cedrick Chaput
SysAdmin Part 7 4 143 Cedrick Chaput
SysAdmin Part 8 4 224 Cedrick Feat Mr.Un1k0d3r

Web Warning (36)

Challenges descriptions Points Validation Author
Big Brother is watching 1 1123 Mr.Un1k0d3r
Looking for password file 1 1554 Mr.Un1k0d3r
Area 51 1 1027 Mr.Un1k0d3r
Headache 1 1484 Mr.Un1k0d3r
Words mean something? 1 1150 Mr.Un1k0d3r
Admin Portal 2 377 Mr.Un1k0d3r
XSS Challenge 1 2 160 Mr.Un1k0d3r
Captcha I 2 261 SynneR
Unreadable captcha 2 130 SynneR
XSS Challenge 2 2 189 Mr.Un1k0d3r
Password reset 2 447 Mr.Un1k0d3r
PHP Fairy 2 71 nic-Lovin
Malicious upload 2 228 Mr.Un1k0d3r
Security thru obscurity! 2 474 Mr.Un1k0d3r
REST in peace 3 86 GoSec CTF 2014
PHP feature or 0day? 3 104 Mr.Un1k0d3r
Password reset reloaded 3 187 Mr.Un1k0d3r
Serial killer! 3 213 Mr.Un1k0d3r
Looking for the flag? 3 356 Mr.Un1k0d3r
XSS Challenge 3 3 77 Mr.Un1k0d3r
XSS Challenge 4 3 101 Mr.Un1k0d3r
Facebook will never forget this one 3 97 Mr.Un1k0d3r
Captcha II 4 68 SynneR
Propaganda mail 4 90 NSEC 2015
Freedom Firewall 5 45 NSEC 2015
Password Reset As a Service 5 15 Mr.Un1k0d3r
Timesheet As a Service 5 11 Mr.Un1k0d3r
Read the unreadable 5 39 Mr.Un1k0d3r
PHP feature or 0day reloaded? 6 21 Mr.Un1k0d3r
I hate this one 6 98 Mr.Un1k0d3r
Orao's factory 6 51 NSEC 2015
Serial killer part 2 6 20 HoLyVieR
XSS Challenge 5 6 64 Mr.Un1k0d3r
XPATH of hell! 7 68 Francois L. Feat Mr.Un1k0d3r
Looking for god in your life? 8 23 NSEC 2015
Secure Mail 8 30 GoSec CTF 2014

Flag statistics (67665 submitted so far)

Number of points Number of validation Number of points Number of validation
14 points 31 13 points 20
12 points 72 11 points 10
10 points 154 9 points 36
8 points 453 7 points 949
6 points 2198 5 points 1977
4 points 4212 3 points 8222
2 points 21867 1 points 27464

Shoutbox

2017-03-26 05:31:29 - Mr.Un1k0d3r
@xerfmatter: send me a message
2017-03-23 20:07:48 - xerfmatter
question about challenge I solved but still puzzled by the solution!! sqli3, who and where can I ask?
2017-03-21 20:59:14 - xalis123
30
2017-03-20 11:15:32 - xalis123
30
2017-03-18 06:22:35 - nemo22194
does someone know the hint of the 0 Day store?
2017-03-16 18:18:41 - Towel
@ppp Check your PMs
2017-03-16 14:30:20 - ppp
any one <h1> ADMIN MAIL PLEASE <h1>
2017-03-16 14:29:36 - ppp
the server is vul with exploit got the root access admin mail please
2017-03-14 15:40:15 - k12sec
30
2017-03-12 14:28:16 - garigouster
Jack the heaper: binary in rzt webpage is not updated (let's exploit heap overflow, not index overflow)
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.

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