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358 challenges are currently available for a total of 1647 points.


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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
Sometime there is no buffer overflow sandbox is Up Delivery As A Service sandbox is Up
Can you get the service password sandbox is Up Just another useless service sandbox is Up

Challenges


Coding Challenges (17)

Challenges descriptions Points Validation Author
Hash me please 2 3084 Mr.Un1k0d3r
Ask your grandpa! 2 1137 Mr.Un1k0d3r's Dad
Hash me reloaded 3 1698 Mr.Un1k0d3r
I hate mathematics 3 1798 Mr.Un1k0d3r
Ask your grandpa again! 4 380 Mr.Un1k0d3r's Dad
Hash breaker 4 1385 Mr.Un1k0d3r
I saw a little elf 4 503 Mr.Un1k0d3r
Hash breaker reloaded 5 797 Mr.Un1k0d3r
Execute me if you can 5 389 Mr.Un1k0d3r
Read me if you can 6 427 Mr.Un1k0d3r
Ascii Art 6 632 Mr.Un1k0d3r
Execute me if you can again 6 195 Mr.Un1k0d3r
Hash breaker reloaded again 6 268 Mr.Un1k0d3r
Xor me if you can 6 397 Mr.Un1k0d3r
Find the right word 7 330 Mr.Un1k0d3r
Number game 7 317 Mr.Un1k0d3r remade by theindian
Classic Sudoku 7 267 Mr.Un1k0d3r remade by dread_knight

Cryptography (36)

Challenges descriptions Points Validation Author
Some martian message 1 6565 Mr.Un1k0d3r
You're Drunk! 1 1913 Mr.Un1k0d3r
File recovery 1 3070 Mr.Un1k0d3r
Fashion Victim 2 513 GoSec CTF 2014
Martian message part 2 2 2741 Mr.Un1k0d3r
Public key recovery 2 1504 Mr.Un1k0d3r
I Lost my password 3 1104 Mr.Un1k0d3r
Let's Play Scrabble! 3 51 Madness
Hangovers and more: Bacon 3 533 SynneR
Martian message part 3 3 1058 Mr.Un1k0d3r
Can you understand this sentence? 3 680 Mr.Un1k0d3r
Encrypted Zip 4 549 Mr.Un1k0d3r
Crypto over the network 4 129 Mr.Un1k0d3r remade by theindian
Crypto Object 4 185 GoSec CTF 2014
Crypto Leak 4 47 NSEC 2018 (Towel)
SSO Service 4 18 Mr.Un1k0d3r (Trustwave CTF 2020)
Is it a secure string? 5 253 Cedrick Chaput
Let's Play Scrabble! Part 2 5 27 Madness
Jabber 5 9 Madness
Free Flag Encrypter 5 17 Towel
Guess the number 6 23 cyberguru
TotalSecure Message Encrypter 6 91 Towel
Welcome to the asylum 6 57 GoSec CTF 2014
Pattern is the key 6 44 Mr.Un1k0d3r
Malcolm 7 20 Trustwave CTF 2020
Jabber Part 2 7 8 Madness
Homemade craptography #2 7 10 HoLyVieR ft. large software company
Homemade Craptography 8 9 NSEC 2018 (HoLyVieR)
Mars Log 8 9 NSEC 2018 (Towel)
Crypto is not good as you think 8 168 Mr.Un1k0d3r
Find your path 9 9 cyberguru
Rusty RSA message signing service 9 15 b0n0n & An0n remade by dysleixa
Spies 9 32 CS Games 2016 (HoLyVieR)
Polly Wants a Cracker 10 7 Madness
TotalSecure Message Encrypter V2 10 18 Towel
Unicorn As A Service 11 9 Towel

Exotic Data Storage (4)

Challenges descriptions Points Validation Author
Just another login form 2 1453 Mr.Un1k0d3r
DON'T login as admin 2 37 mbergeron
I forgot my password 3 33 mbergeron
Inspiration 6 34 NSEC 2019 (becojo)

Forensics (28)

Challenges descriptions Points Validation Author
I made a dd of Agent Smith usb key 1 3153 Cedrick Chaput
Who I am part 2 1 658 Mr.Un1k0d3r
Meat Loaf 2 287 Ekse
Who I am? 2 973 Mr.Un1k0d3r
Dr. Pouce 2 2307 Cedrick Chaput
Attention Dinosaure Survive 2 1295 PRL
The good, the bad and the ugly 2 126 Mr.Un1k0d3r
1 / 3 Do not waste the environment 2 978 PRL
Hide my ass in my home! 2 1501 Cedrick Chaput
Hey Chuck where is the flag? 2 1486 Mr.Un1k0d3r
I love cat 2 732 Mr.Un1k0d3r
The words flew but writing remains 3 163 Martin Dube
2 / 3 Did you see my desktop? 3 796 PRL
Are you Twisted Insane? 3 28 Cedrick Feat Mr.Un1k0d3r
Someone steal my flag! 3 402 Mr.Un1k0d3r
802.1X Part 1 4 64 NSEC 2015
R.I.P MsPaint 4 103 Misker
3 / 3 Suspicious account password? 4 653 PRL
Poor internet connection 4 387 Cedrick Chaput
Agent Smith reloaded 4 254 Cedrick Chaput
Someone steal my flag again 5 139 GoSec CTF 2014
We got breached 5 212 Mr.Un1k0d3r
Ping pong 5 89 SynneR
Spy my girl 5 208 Cedrick Chaput
Russian Crypto Roulette 6 71 SynneR
We got breached again 6 152 Mr.Un1k0d3r
Really Depressed Protocol 7 77 SynneR
802.1X Part 2 8 45 NSEC 2015

Jail Escaping (21)

Challenges descriptions Points Validation Author
Bash Jail 1 1 2298 Mr.Un1k0d3r
Bash Jail 2 2 1463 Mr.Un1k0d3r
Bash Jail 3 3 832 Mr.Un1k0d3r
Bash Jail 4 4 444 Mr.Un1k0d3r
Bash Jail 5 6 192 Mr.Un1k0d3r
Bash Jail 6 8 29 Garigouster
Bash Jail 7 12 17 Garigouster
C Jail 1 1 365 Mr.Un1k0d3r
C Jail 2 2 236 Mr.Un1k0d3r
C Jail 3 3 194 Mr.Un1k0d3r
C Jail 4 5 21 Garigouster
C Jail 5 7 14 Garigouster
C Jail 6 14 10 Garigouster
PHP Jail 1 1 559 Mr.Un1k0d3r
PHP Jail 2 2 368 Mr.Un1k0d3r
PHP Jail 3 3 256 Mr.Un1k0d3r
PHP Jail 4 4 199 Mr.Un1k0d3r
PHP Jail 5 6 165 Mr.Un1k0d3r
PyJail 1 3 238 Martin Dube
PyJail 2 5 128 Martin Dube
PyJail 3 6 46 Martin Dube

JavaScript (10)

Challenges descriptions Points Validation Author
Client side validation is bad! 1 6937 Mr.Un1k0d3r
Hashing is more secure 1 6020 Mr.Un1k0d3r
Then obfuscation is more secure 1 4587 Mr.Un1k0d3r
Why not? 2 3491 Mr.Un1k0d3r
Valid key required 2 910 Francois Lajeunesse
Most Secure Crypto Algo 2 1666 Mr.Un1k0d3r
Why not be more secure? 5 566 Mr.Un1k0d3r
WTF Lol! 6 264 HoLyVieR
Interstellar PhoneBook 6 39 NSEC 2018 (HoLyVieR)
Beauty and the beast 7 39 Mr.Un1k0d3r

Malware Analysis (22)

Challenges descriptions Points Validation Author
APT 1337 4 49 NSEC 2017 (Mr.Un1k0d3r)
Capture 1 Part 1 1 648 Mr.Un1k0d3r
Capture 1 Part 2 1 213 Mr.Un1k0d3r
Capture 1 Part 3 1 239 Mr.Un1k0d3r
Capture 1 Part 4 2 38 Mr.Un1k0d3r
Capture 1 Part 5 3 58 Mr.Un1k0d3r
Capture 1 Part 6 3 150 Mr.Un1k0d3r
Capture 1 Part 7 3 33 Mr.Un1k0d3r
Capture 2 Part 1 1 61 Mr.Un1k0d3r
Capture 2 Part 2 1 112 Mr.Un1k0d3r
Capture 2 Part 3 1 113 Mr.Un1k0d3r
Capture 2 Part 4 3 110 Mr.Un1k0d3r
Capture 2 Part 5 4 40 Mr.Un1k0d3r
Capture 2 Part 6 7 19 Mr.Un1k0d3r
Evil X 8 5 cyberguru
Just Another MBR Ransomware 8 20 Towel
RAO democracy 4 56 NSEC 2017 (Mr.Un1k0d3r)
This malware excels Part 1 2 33 HF 2020 (nic-lovin)
This malware excels Part 2 1 32 HF 2020 (nic-lovin)
This malware excels Part 3 2 23 HF 2020 (nic-lovin)
This malware excels Part 4 5 15 HF 2020 (nic-lovin)
WebShell of Hell 5 19 An0n

NSEC 2021 (8)

Challenges descriptions Points Validation Author
Crapto Century 3 16 NSEC 2021 (davidlebr1)
Farmer Search (1/3) 3 21 NSEC 2021 (mbergeron)
Farmer Search (2/3) 2 17 NSEC 2021 (mbergeron)
Farmer Search (3/3) 4 13 NSEC 2021 (mbergeron)
Knight Portal (1/3) 2 45 NSEC 2021 (mbergeron)
Knight Portal (2/3) 2 37 NSEC 2021 (mbergeron)
Knight Portal (3/3) 5 15 NSEC 2021 (mbergeron)
Reading Through the Cloud 4 18 NSEC 2021 (davidlebr1)

Pwnage Linux (21)

Challenges descriptions Points Validation Author
Level1 Pwnage Linux Level Up 1 675 P-Y Feat Martin Dube
Level2 Pwnage Linux Level Up 2 416 P-Y Feat Martin Dube
Remote Auth 2 103 NSEC 2015
Level3 Pwnage Linux Level Up 3 296 P-Y Feat Martin Dube
The Vault 3 52 Mr.Un1k0d3r
Level1 Pwnage Linux x86_64 3 202 Mr.Un1k0d3r
Can you get the service password 4 116 Mr.Un1k0d3r remade by sagefault
Sometime there is no buffer overflow 4 74 Mr.Un1k0d3r remade by GuilT
Level2 Pwnage Linux x86_64 4 70 Mr.Un1k0d3r
Friendly race 5 26 Garigouster
Level4 Pwnage Linux Level Up 5 139 Mr.Un1k0d3r
RPCFTW! 6 36 NSEC 2015
Jack the heaper 6 21 uaf.io
Level4 Pwnage Linux x86_64 7 42 Mr.Un1k0d3r
Level3 Pwnage Linux x86_64 7 67 Mr.Un1k0d3r
Just another useless service 8 37 NSEC 2015
Take over the Virtual World 8 37 NSEC 2015
Base64 As A Service 8 30 Guilt
All You Need Is a Client 8 11 Mr.Un1k0d3r (Trustwave CTF 2020)
Base64 As A Service Reloaded 9 25 Guilt
Delivery As A Service 10 17 NSEC 2016

Reverse Engineering (56)

Challenges descriptions Points Validation Author
Time to learn x86 ASM & gdb 2 2082 Mr.Un1k0d3r
See No Evil - Part 1 2 149 alxbl
Can you see through the star 2 1277 Mr.Un1k0d3r
Gift as a Service Part 2 2 47 H0H0H0 Day (R0 team)
See No Evil - Part 2 3 112 alxbl
See No Evil - Part 3 3 108 alxbl
Intro To Sparc 3 189 Ian-Kyle Wagner
Kernel introduction 3 269 Mr.Un1k0d3r
Heap allocator 3 286 NSEC 2015
Crack Me 1 3 779 Mr.Un1k0d3r
Introduction to MIPS 3 331 Mr.Un1k0d3r
I never forget the Nintendo 64 3 647 Mr.Un1k0d3r
Windows x86 reversing is cool 3 722 Mr.Un1k0d3r
Old School 4 87 Towel
Power to the people 4 75 NSEC 2015
Let's take a detour 4 102 Floesen
Altera? 4 76 NSEC 2016
ASM Lovers 4 97 NSEC 2016
Wrong byte! 4 283 Mr.Un1k0d3r
See No Evil - Part 4 4 81 alxbl
See No Evil - Part 5 4 75 alxbl
I love tea! 4 36 nic-lovin
Space Invaders 4 26 Trustwave CTF 2020
Introduction to ARM 4 363 Mr.Un1k0d3r
Windows API for the win 4 344 Mr.Un1k0d3r
WASM Part 1 5 74 NSEC 2018 (Isra17)
The MI7 password prompt 5 70 NSEC 2018 (Mr.Un1k0d3r)
Phenix Golgoth 5 60 Hackfest 2016
Can I speak with the kernel? 5 90 Zerosum0x0
Reindeer Game 5 13 H0H0H0 Day 2020 (Towel)
Back to our roots 5 122 Mr.Un1k0d3r
Virtual World 5 85 NSEC 2015
Smart enough? 5 125 NSEC 2015
Pwndr3 Authenticator 5 67 Pwndr3
RingZer0 Authenticator 5 246 Ekse
Need a client 6 75 Mr.Un1k0d3r
I Think I forgot to take out the garbage! 6 27 Mr.Un1k0d3r
Flag stealer 6 81 Ekse
Update Manager 6 66 Ekse
Buggy Bunny 7 13 Garigouster
Cappin' 7 4 Mr.Un1k0d3r (Trustwave CTF 2020)
The supreme bash 7 27 NSEC 2017 (Mr.Un1k0d3r)
Armed and ready 7 22 NSEC 2015
SOS Lib 7 35 Mr.Un1k0d3r
You're not welcome 8 56 Towel
WASM Part 2 8 9 NSEC 2018 (Isra17)
License to kill 8 4 Mr.Un1k0d3r
Rebate As A Service 8 45 NSEC 2016
The Matrix 9 13 Towel
Keygen time again 10 34 GoSec CTF 2014
Trolling the troll 10 33 Mr.Un1k0d3r
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 10 NSEC 2018 (Towel)

Shellcoding (7)

Challenges descriptions Points Validation Author
Basics of Linux x64 shellcoding 2 521 Mr.Un1k0d3r
Linux x64 shellcoding level 2 4 266 Mr.Un1k0d3r
Linux x64 shellcoding level 3 6 208 Mr.Un1k0d3r
Linux x64 shellcoding level 4 8 165 Mr.Un1k0d3r
Linux x64 shellcoding level 5 10 116 Mr.Un1k0d3r
Linux x64 shellcoding level 6 12 100 Mr.Un1k0d3r
Linux x64 shellcoding level 7 14 58 Mr.Un1k0d3r

Software Defined Radio (5)

Challenges descriptions Points Validation Author
SigID Level 1 1 976 Guenael
You Turn Me On And Off 3 15 Trustwave CTF 2020
Let's Get Scwhifty! 5 13 Trustwave CTF 2020
SigID Level 2 6 13 Guenael
Don't flip out, Thomas! 7 13 Trustwave CTF 2020

SQL Injection (32)

Challenges descriptions Points Validation Author
Most basic SQLi pattern. 1 9184 Mr.Un1k0d3r
ACL rulezzz the world. 2 4410 Mart
Login portal 1 2 3384 Mr.Un1k0d3r
Random Login Form 2 1984 Mr.Un1k0d3r
Po po po po postgresql 2 2075 Mr.Un1k0d3r
Login portal 2 3 750 Mr.Un1k0d3r
0 Day Store 3 136 NSEC 2015
Don't mess with Noemie; she hates admin! 3 895 Mr.Un1k0d3r
What's the definition of NULL 3 737 Mr.Un1k0d3r
Quote of the day 4 649 Mr.Un1k0d3r
No more hacking for me! 4 326 Mr.Un1k0d3r
Thinking outside the box is the key 4 538 Mr.Un1k0d3r
Don't Stumble in the Process 4 60 mbergeron
Brain Teaser 1 4 29 Sideni
Quote of the day reloaded 5 251 Mr.Un1k0d3r
When it's lite it's not necessarily easy 6 224 Mr.Un1k0d3r
Login portal 3 6 257 Mr.Un1k0d3r
Hot Single Mom 6 174 GoSec CTF 2014
Brain Teaser 2 7 16 Sideni
Internet As A Service 7 124 Mr.Un1k0d3r
Size DOES matter 7 142 Mr.Un1k0d3r
/etc/passwd 7 154 Mr.Un1k0d3r
Groups of hacker 7 163 Mr.Un1k0d3r
Login portal 4 7 152 Mr.Un1k0d3r
The useless search tool 8 124 Mr.Un1k0d3r
Login portal 5 8 73 Mr.Un1k0d3r
stackoverflow.com lied to me... again 9 82 Corb3nik
Doctor Who ? 9 11 Sideni
Login portal 6 10 61 Mr.Un1k0d3r
SQHell 11 15 Sideni feat. mbergeron
Don't Stumble in the Process Reloaded 12 9 mbergeron
!Mysql + Brain fart 13 32 Mr.Un1k0d3r

Steganography (25)

Challenges descriptions Points Validation Author
Victor you're hidding me something 1 2498 Cedrick Chaput
You're lost? Use the map 1 1728 Mr.Un1k0d3r
Look inside the house 2 970 Mr.Un1k0d3r
A ghost sound 2 816 Cedrick Chaput
Victor reloaded 2 1004 Cedrick Chaput
The Sloth 2 122 Misker
Brainsick 2 851 Mr.Un1k0d3r
Missing Pieces 2 754 Cedrick Chaput
Hidden In Plain Sight 2 649 NSEC 2015
Pixel Everywhere 2 146 Mr.Un1k0d3r
The vestige of dial-up Internet 2 150 Uid0
I'm Goronyo Babad Nigerian prince 2 546 Mr.Un1k0d3r
5 beautiful colors 3 47 PublicName
Crazy Cat Lady 3 83 Madness
Love Letter 3 220 Towel
Can you see through the matrix! 3 142 Mr.Un1k0d3r
Your old friend Orloge Simard 3 573 Cedrick Chaput
Can you see through the matrix reloaded! 4 28 Towel
Stay Classy! 4 17 Sideni
Not just 64 4 16 Madness
Even the Odds 4 18 alxbl
Walk the line! 5 148 Cedrick Chaput
Stop the violence 5 19 jusb3
Stop the violence 2 5 7 jusb3
Hidden out of sight 5 8 cyberguru

SysAdmin Linux (8)

Challenges descriptions Points Validation Author
SysAdmin Part 1 1 2513 Cedrick Chaput
SysAdmin Part 2 1 1821 Cedrick Feat Mr.Un1k0d3r
SysAdmin Part 3 1 1158 Mr.Un1k0d3r
SysAdmin Part 4 2 1087 Cedrick Feat Mr.Un1k0d3r
SysAdmin Part 5 2 699 Cedrick Feat Mr.Un1k0d3r
SysAdmin Part 6 3 658 Cedrick Chaput
SysAdmin Part 7 4 532 Cedrick Chaput
SysAdmin Part 8 4 587 Cedrick Feat Mr.Un1k0d3r

The NC8 Reverse Engineering Track (6)

Challenges descriptions Points Validation Author
NC8 MAINFRAME MANAGEMENT INTERFACE Part 1 7 56 NSEC 2018 (isra17)
NC8 MAINFRAME MANAGEMENT INTERFACE Part 2 Flag 1 3 34 NSEC 2018 (isra17)
NC8 MAINFRAME MANAGEMENT INTERFACE Part 2 Flag 2 7 31 NSEC 2018 (isra17)
NC8 MAINFRAME MANAGEMENT INTERFACE Part 2 Flag 3 10 31 NSEC 2018 (isra17)
NC8 MAINFRAME MANAGEMENT INTERFACE Part 3 5 20 NSEC 2018 (isra17)
NC8 MAINFRAME MANAGEMENT INTERFACE Part 4 15 17 NSEC 2018 (isra17)

Web Warning (52)

Challenges descriptions Points Validation Author
Words mean something? 1 2952 Mr.Un1k0d3r
Big Brother is watching 1 4160 Mr.Un1k0d3r
Hacking skill are optional 1 225 Breached Company
Looking for password file 1 4354 Mr.Un1k0d3r
Area 51 1 2807 Mr.Un1k0d3r
Headache 1 3622 Mr.Un1k0d3r
Security thru obscurity! 2 975 Mr.Un1k0d3r
PHP Fairy 2 891 nic-Lovin
XSS Challenge 2 2 497 Mr.Un1k0d3r
XSS Challenge 1 2 513 Mr.Un1k0d3r
Admin Portal 2 1157 Mr.Un1k0d3r
Password reset 2 963 Mr.Un1k0d3r
Malicious upload 2 578 Mr.Un1k0d3r
Captcha I 2 549 SynneR
Unreadable captcha 2 395 SynneR
Password reset reloaded 3 350 Mr.Un1k0d3r
PHP feature or 0day? 3 439 Mr.Un1k0d3r
Serial killer! 3 448 Mr.Un1k0d3r
JWT pitfall 1 3 61 Mr.Un1k0d3r
REST in peace 3 208 GoSec CTF 2014
Captcha IV 3 34 FadedForEver
NeuroSoft: Observation Unit Center 3 53 NSEC 2019 (ldionmarcil)
Beyond Reality Part 1 3 48 NSEC 2019 (ldionmarcil)
XSS Challenge 3 3 199 Mr.Un1k0d3r
XSS Challenge 4 3 212 Mr.Un1k0d3r
Facebook will never forget this one 3 220 Mr.Un1k0d3r
UploadStar 3 43 nopernik
Gift as a Service Part 1 3 53 H0H0H0 Day (R0 team)
Looking for the flag? 3 719 Mr.Un1k0d3r
Captcha III 4 53 mbergeron
Propaganda mail 4 235 NSEC 2015
Captcha II 4 140 SynneR
Read the unreadable 5 113 Mr.Un1k0d3r
Freedom Firewall 5 122 NSEC 2015
Timesheet As a Service 5 32 Mr.Un1k0d3r
Password Reset As a Service 5 60 Mr.Un1k0d3r
UploadStar Reloaded 5 27 nopernik
Super Lottery 5 79 davidlebr1
Beyond Reality Part 2 5 31 NSEC 2019 (ldionmarcil)
The archive 5 25 NSEC 2019 (HoLyVieR)
Lost API 5 35 NSEC 2019 (HoLyVieR)
PHP feature or 0day reloaded? 6 73 Mr.Un1k0d3r
I hate this one 6 220 Mr.Un1k0d3r
XSS Challenge 5 6 127 Mr.Un1k0d3r
Serial killer part 2 6 46 HoLyVieR
Orao's factory 6 115 NSEC 2015
Ping It! 7 33 mnadeau
Super Lottery Reloaded 7 29 davidlebr1 Feat mbergeron
XPATH of hell! 7 133 Francois L. Feat Mr.Un1k0d3r
Secure Mail 8 79 GoSec CTF 2014
Looking for god in your life? 8 63 NSEC 2015
Lotto 8/33 11 7 fishinspace

Flag statistics (182047 submitted so far)

Number of points Number of validation Number of points Number of validation
18 points 10 15 points 17
14 points 68 13 points 49
12 points 152 11 points 47
10 points 317 9 points 187
8 points 1018 7 points 2357
6 points 4860 5 points 5011
4 points 10875 3 points 21622
2 points 59241 1 points 76216

close Intercepting SSL Traffic on RingZer0ctf.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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