Challenges

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

RingZer0 Team provide you couple of tools that can help you. See available tools.

Means challenge completed.

Point to write-up that worth to be reading.

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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

Coding Challenges (17)

Challenges descriptions	Points	Validation	Author
Hash me please	2	3184	Mr.Un1k0d3r
Ask your grandpa!	2	1165	Mr.Un1k0d3r's Dad
Hash me reloaded	3	1743	Mr.Un1k0d3r
I hate mathematics	3	1851	Mr.Un1k0d3r
Ask your grandpa again!	4	395	Mr.Un1k0d3r's Dad
Hash breaker	4	1426	Mr.Un1k0d3r
I saw a little elf	4	518	Mr.Un1k0d3r
Hash breaker reloaded	5	822	Mr.Un1k0d3r
Execute me if you can	5	397	Mr.Un1k0d3r
Read me if you can	6	439	Mr.Un1k0d3r
Ascii Art	6	654	Mr.Un1k0d3r
Execute me if you can again	6	200	Mr.Un1k0d3r
Hash breaker reloaded again	6	273	Mr.Un1k0d3r
Xor me if you can	6	411	Mr.Un1k0d3r
Find the right word	7	343	Mr.Un1k0d3r
Number game	7	329	Mr.Un1k0d3r remade by theindian
Classic Sudoku	7	280	Mr.Un1k0d3r remade by dread_knight

Cryptography (36)

Challenges descriptions	Points	Validation	Author
Some martian message	1	6826	Mr.Un1k0d3r
You're Drunk!	1	2079	Mr.Un1k0d3r
File recovery	1	3164	Mr.Un1k0d3r
Fashion Victim	2	542	GoSec CTF 2014
Martian message part 2	2	2846	Mr.Un1k0d3r
Public key recovery	2	1533	Mr.Un1k0d3r
I Lost my password	3	1128	Mr.Un1k0d3r
Let's Play Scrabble!	3	56	Madness
Hangovers and more: Bacon	3	552	SynneR
Martian message part 3	3	1110	Mr.Un1k0d3r
Can you understand this sentence?	3	696	Mr.Un1k0d3r
Encrypted Zip	4	567	Mr.Un1k0d3r
Crypto over the network	4	135	Mr.Un1k0d3r remade by theindian
Crypto Object	4	191	GoSec CTF 2014
Crypto Leak	4	50	NSEC 2018 (Towel)
SSO Service	4	19	Mr.Un1k0d3r (Trustwave CTF 2020)
Is it a secure string?	5	261	Cedrick Chaput
Let's Play Scrabble! Part 2	5	28	Madness
Jabber	5	9	Madness
Free Flag Encrypter	5	18	Towel
Guess the number	6	25	cyberguru
TotalSecure Message Encrypter	6	93	Towel
Welcome to the asylum	6	58	GoSec CTF 2014
Pattern is the key	6	46	Mr.Un1k0d3r
Malcolm	7	21	Trustwave CTF 2020
Jabber Part 2	7	8	Madness
Homemade craptography #2	7	12	HoLyVieR ft. large software company
Homemade Craptography	8	10	NSEC 2018 (HoLyVieR)
Mars Log	8	10	NSEC 2018 (Towel)
Crypto is not good as you think	8	170	Mr.Un1k0d3r
Find your path	9	11	cyberguru
Rusty RSA message signing service	9	15	b0n0n & An0n remade by dysleixa
Spies	9	33	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	1485	Mr.Un1k0d3r
DON'T login as admin	2	37	mbergeron
I forgot my password	3	33	mbergeron
Inspiration	6	35	NSEC 2019 (becojo)

Forensics (28)

Challenges descriptions	Points	Validation	Author
I made a dd of Agent Smith usb key	1	3278	Cedrick Chaput
Who I am part 2	1	722	Mr.Un1k0d3r
Meat Loaf	2	317	Ekse
Who I am?	2	1027	Mr.Un1k0d3r
Dr. Pouce	2	2349	Cedrick Chaput
Attention Dinosaure Survive	2	1354	PRL
The good, the bad and the ugly	2	142	Mr.Un1k0d3r
1 / 3 Do not waste the environment	2	999	PRL
Hide my ass in my home!	2	1551	Cedrick Chaput
Hey Chuck where is the flag?	2	1535	Mr.Un1k0d3r
I love cat	2	766	Mr.Un1k0d3r
The words flew but writing remains	3	167	Martin Dube
2 / 3 Did you see my desktop?	3	816	PRL
Are you Twisted Insane?	3	29	Cedrick Feat Mr.Un1k0d3r
Someone steal my flag!	3	413	Mr.Un1k0d3r
802.1X Part 1	4	67	NSEC 2015
R.I.P MsPaint	4	106	Misker
3 / 3 Suspicious account password?	4	667	PRL
Poor internet connection	4	391	Cedrick Chaput
Agent Smith reloaded	4	260	Cedrick Chaput
Someone steal my flag again	5	143	GoSec CTF 2014
We got breached	5	215	Mr.Un1k0d3r
Ping pong	5	91	SynneR
Spy my girl	5	213	Cedrick Chaput
Russian Crypto Roulette	6	73	SynneR
We got breached again	6	155	Mr.Un1k0d3r
Really Depressed Protocol	7	80	SynneR
802.1X Part 2	8	46	NSEC 2015

Jail Escaping (21)

Challenges descriptions	Points	Validation	Author
Bash Jail 1	1	2364	Mr.Un1k0d3r
Bash Jail 2	2	1498	Mr.Un1k0d3r
Bash Jail 3	3	856	Mr.Un1k0d3r
Bash Jail 4	4	457	Mr.Un1k0d3r
Bash Jail 5	6	200	Mr.Un1k0d3r
Bash Jail 6	8	32	Garigouster
Bash Jail 7	12	17	Garigouster
C Jail 1	1	378	Mr.Un1k0d3r
C Jail 2	2	245	Mr.Un1k0d3r
C Jail 3	3	203	Mr.Un1k0d3r
C Jail 4	5	21	Garigouster
C Jail 5	7	14	Garigouster
C Jail 6	14	10	Garigouster
PHP Jail 1	1	567	Mr.Un1k0d3r
PHP Jail 2	2	377	Mr.Un1k0d3r
PHP Jail 3	3	265	Mr.Un1k0d3r
PHP Jail 4	4	207	Mr.Un1k0d3r
PHP Jail 5	6	173	Mr.Un1k0d3r
PyJail 1	3	245	Martin Dube
PyJail 2	5	133	Martin Dube
PyJail 3	6	46	Martin Dube

JavaScript (10)

Challenges descriptions	Points	Validation	Author
Client side validation is bad!	1	7044	Mr.Un1k0d3r
Hashing is more secure	1	6110	Mr.Un1k0d3r
Then obfuscation is more secure	1	4663	Mr.Un1k0d3r
Why not?	2	3560	Mr.Un1k0d3r
Valid key required	2	930	Francois Lajeunesse
Most Secure Crypto Algo	2	1690	Mr.Un1k0d3r
Why not be more secure?	5	576	Mr.Un1k0d3r
WTF Lol!	6	272	HoLyVieR
Interstellar PhoneBook	6	40	NSEC 2018 (HoLyVieR)
Beauty and the beast	7	40	Mr.Un1k0d3r

Malware Analysis (22)

Challenges descriptions	Points	Validation	Author
APT 1337	4	49	NSEC 2017 (Mr.Un1k0d3r)
Capture 1 Part 1	1	665	Mr.Un1k0d3r
Capture 1 Part 2	1	221	Mr.Un1k0d3r
Capture 1 Part 3	1	244	Mr.Un1k0d3r
Capture 1 Part 4	2	39	Mr.Un1k0d3r
Capture 1 Part 5	3	60	Mr.Un1k0d3r
Capture 1 Part 6	3	154	Mr.Un1k0d3r
Capture 1 Part 7	3	33	Mr.Un1k0d3r
Capture 2 Part 1	1	64	Mr.Un1k0d3r
Capture 2 Part 2	1	115	Mr.Un1k0d3r
Capture 2 Part 3	1	116	Mr.Un1k0d3r
Capture 2 Part 4	3	113	Mr.Un1k0d3r
Capture 2 Part 5	4	43	Mr.Un1k0d3r
Capture 2 Part 6	7	19	Mr.Un1k0d3r
Evil X	8	6	cyberguru
Just Another MBR Ransomware	8	20	Towel
RAO democracy	4	57	NSEC 2017 (Mr.Un1k0d3r)
This malware excels Part 1	2	35	HF 2020 (nic-lovin)
This malware excels Part 2	1	33	HF 2020 (nic-lovin)
This malware excels Part 3	2	24	HF 2020 (nic-lovin)
This malware excels Part 4	5	17	HF 2020 (nic-lovin)
WebShell of Hell	5	19	An0n

NSEC 2021 (8)

Challenges descriptions	Points	Validation	Author
Crapto Century	3	24	NSEC 2021 (davidlebr1)
Farmer Search (1/3)	3	24	NSEC 2021 (mbergeron)
Farmer Search (2/3)	2	20	NSEC 2021 (mbergeron)
Farmer Search (3/3)	4	14	NSEC 2021 (mbergeron)
Knight Portal (1/3)	2	61	NSEC 2021 (mbergeron)
Knight Portal (2/3)	2	50	NSEC 2021 (mbergeron)
Knight Portal (3/3)	5	19	NSEC 2021 (mbergeron)
Reading Through the Cloud	4	23	NSEC 2021 (davidlebr1)

Pwnage Linux (21)

Challenges descriptions	Points	Validation	Author
Level1 Pwnage Linux Level Up	1	691	P-Y Feat Martin Dube
Level2 Pwnage Linux Level Up	2	424	P-Y Feat Martin Dube
Remote Auth	2	110	NSEC 2015
Level3 Pwnage Linux Level Up	3	302	P-Y Feat Martin Dube
The Vault	3	57	Mr.Un1k0d3r
Level1 Pwnage Linux x86_64	3	205	Mr.Un1k0d3r
Can you get the service password	4	122	Mr.Un1k0d3r remade by sagefault
Sometime there is no buffer overflow	4	77	Mr.Un1k0d3r remade by GuilT
Level2 Pwnage Linux x86_64	4	72	Mr.Un1k0d3r
Friendly race	5	28	Garigouster
Level4 Pwnage Linux Level Up	5	143	Mr.Un1k0d3r
RPCFTW!	6	38	NSEC 2015
Jack the heaper	6	24	uaf.io
Level4 Pwnage Linux x86_64	7	44	Mr.Un1k0d3r
Level3 Pwnage Linux x86_64	7	69	Mr.Un1k0d3r
Just another useless service	8	40	NSEC 2015
Take over the Virtual World	8	37	NSEC 2015
Base64 As A Service	8	35	Guilt
All You Need Is a Client	8	14	Mr.Un1k0d3r (Trustwave CTF 2020)
Base64 As A Service Reloaded	9	29	Guilt
Delivery As A Service	10	19	NSEC 2016

Reverse Engineering (56)

Challenges descriptions	Points	Validation	Author
Time to learn x86 ASM & gdb	2	2139	Mr.Un1k0d3r
See No Evil - Part 1	2	161	alxbl
Can you see through the star	2	1303	Mr.Un1k0d3r
Gift as a Service Part 2	2	47	H0H0H0 Day (R0 team)
See No Evil - Part 2	3	120	alxbl
See No Evil - Part 3	3	114	alxbl
Intro To Sparc	3	191	Ian-Kyle Wagner
Kernel introduction	3	269	Mr.Un1k0d3r
Heap allocator	3	288	NSEC 2015
Crack Me 1	3	788	Mr.Un1k0d3r
Introduction to MIPS	3	332	Mr.Un1k0d3r
I never forget the Nintendo 64	3	662	Mr.Un1k0d3r
Windows x86 reversing is cool	3	734	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	284	Mr.Un1k0d3r
See No Evil - Part 4	4	87	alxbl
See No Evil - Part 5	4	81	alxbl
I love tea!	4	36	nic-lovin
Space Invaders	4	26	Trustwave CTF 2020
Introduction to ARM	4	365	Mr.Un1k0d3r
Windows API for the win	4	349	Mr.Un1k0d3r
WASM Part 1	5	75	NSEC 2018 (Isra17)
The MI7 password prompt	5	74	NSEC 2018 (Mr.Un1k0d3r)
Phenix Golgoth	5	60	Hackfest 2016
Can I speak with the kernel?	5	91	Zerosum0x0
Reindeer Game	5	14	H0H0H0 Day 2020 (Towel)
Back to our roots	5	124	Mr.Un1k0d3r
Virtual World	5	85	NSEC 2015
Smart enough?	5	126	NSEC 2015
Pwndr3 Authenticator	5	68	Pwndr3
RingZer0 Authenticator	5	248	Ekse
Need a client	6	77	Mr.Un1k0d3r
I Think I forgot to take out the garbage!	6	29	Mr.Un1k0d3r
Flag stealer	6	83	Ekse
Update Manager	6	67	Ekse
Buggy Bunny	7	15	Garigouster
Cappin'	7	4	Mr.Un1k0d3r (Trustwave CTF 2020)
The supreme bash	7	28	NSEC 2017 (Mr.Un1k0d3r)
Armed and ready	7	25	NSEC 2015
SOS Lib	7	38	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	46	NSEC 2016
The Matrix	9	14	Towel
Keygen time again	10	34	GoSec CTF 2014
Trolling the troll	10	33	Mr.Un1k0d3r
The unknown challenge	11	17	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	12	NSEC 2018 (Towel)

Shellcoding (7)

Challenges descriptions	Points	Validation	Author
Basics of Linux x64 shellcoding	2	534	Mr.Un1k0d3r
Linux x64 shellcoding level 2	4	269	Mr.Un1k0d3r
Linux x64 shellcoding level 3	6	210	Mr.Un1k0d3r
Linux x64 shellcoding level 4	8	167	Mr.Un1k0d3r
Linux x64 shellcoding level 5	10	118	Mr.Un1k0d3r
Linux x64 shellcoding level 6	12	102	Mr.Un1k0d3r
Linux x64 shellcoding level 7	14	60	Mr.Un1k0d3r

Software Defined Radio (5)

Challenges descriptions	Points	Validation	Author
SigID Level 1	1	1006	Guenael
You Turn Me On And Off	3	17	Trustwave CTF 2020
Let's Get Scwhifty!	5	15	Trustwave CTF 2020
SigID Level 2	6	13	Guenael
Don't flip out, Thomas!	7	15	Trustwave CTF 2020

SQL Injection (32)

Challenges descriptions	Points	Validation	Author
Most basic SQLi pattern.	1	9434	Mr.Un1k0d3r
ACL rulezzz the world.	2	4547	Mart
Login portal 1	2	3507	Mr.Un1k0d3r
Random Login Form	2	2065	Mr.Un1k0d3r
Po po po po postgresql	2	2147	Mr.Un1k0d3r
Login portal 2	3	782	Mr.Un1k0d3r
0 Day Store	3	144	NSEC 2015
Don't mess with Noemie; she hates admin!	3	920	Mr.Un1k0d3r
What's the definition of NULL	3	778	Mr.Un1k0d3r
Quote of the day	4	661	Mr.Un1k0d3r
No more hacking for me!	4	339	Mr.Un1k0d3r
Thinking outside the box is the key	4	549	Mr.Un1k0d3r
Don't Stumble in the Process	4	65	mbergeron
Brain Teaser 1	4	32	Sideni
Quote of the day reloaded	5	259	Mr.Un1k0d3r
When it's lite it's not necessarily easy	6	230	Mr.Un1k0d3r
Login portal 3	6	263	Mr.Un1k0d3r
Hot Single Mom	6	179	GoSec CTF 2014
Brain Teaser 2	7	16	Sideni
Internet As A Service	7	128	Mr.Un1k0d3r
Size DOES matter	7	145	Mr.Un1k0d3r
/etc/passwd	7	159	Mr.Un1k0d3r
Groups of hacker	7	165	Mr.Un1k0d3r
Login portal 4	7	156	Mr.Un1k0d3r
The useless search tool	8	125	Mr.Un1k0d3r
Login portal 5	8	74	Mr.Un1k0d3r
stackoverflow.com lied to me... again	9	84	Corb3nik
Doctor Who ?	9	11	Sideni
Login portal 6	10	62	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	2590	Cedrick Chaput
You're lost? Use the map	1	1806	Mr.Un1k0d3r
Look inside the house	2	1044	Mr.Un1k0d3r
A ghost sound	2	859	Cedrick Chaput
Victor reloaded	2	1068	Cedrick Chaput
The Sloth	2	137	Misker
Brainsick	2	882	Mr.Un1k0d3r
Missing Pieces	2	784	Cedrick Chaput
Hidden In Plain Sight	2	664	NSEC 2015
Pixel Everywhere	2	171	Mr.Un1k0d3r
The vestige of dial-up Internet	2	176	Uid0
I'm Goronyo Babad Nigerian prince	2	565	Mr.Un1k0d3r
5 beautiful colors	3	48	PublicName
Crazy Cat Lady	3	92	Madness
Love Letter	3	227	Towel
Can you see through the matrix!	3	146	Mr.Un1k0d3r
Your old friend Orloge Simard	3	588	Cedrick Chaput
Can you see through the matrix reloaded!	4	28	Towel
Stay Classy!	4	18	Sideni
Not just 64	4	16	Madness
Even the Odds	4	18	alxbl
Walk the line!	5	155	Cedrick Chaput
Stop the violence	5	19	jusb3
Stop the violence 2	5	7	jusb3
Hidden out of sight	5	9	cyberguru

SysAdmin Linux (8)

Challenges descriptions	Points	Validation	Author
SysAdmin Part 1	1	2569	Cedrick Chaput
SysAdmin Part 2	1	1864	Cedrick Feat Mr.Un1k0d3r
SysAdmin Part 3	1	1192	Mr.Un1k0d3r
SysAdmin Part 4	2	1113	Cedrick Feat Mr.Un1k0d3r
SysAdmin Part 5	2	722	Cedrick Feat Mr.Un1k0d3r
SysAdmin Part 6	3	680	Cedrick Chaput
SysAdmin Part 7	4	550	Cedrick Chaput
SysAdmin Part 8	4	603	Cedrick Feat Mr.Un1k0d3r

The NC8 Reverse Engineering Track (6)

Challenges descriptions	Points	Validation	Author
NC8 MAINFRAME MANAGEMENT INTERFACE Part 1	7	58	NSEC 2018 (isra17)
NC8 MAINFRAME MANAGEMENT INTERFACE Part 2 Flag 1	3	35	NSEC 2018 (isra17)
NC8 MAINFRAME MANAGEMENT INTERFACE Part 2 Flag 2	7	32	NSEC 2018 (isra17)
NC8 MAINFRAME MANAGEMENT INTERFACE Part 2 Flag 3	10	32	NSEC 2018 (isra17)
NC8 MAINFRAME MANAGEMENT INTERFACE Part 3	5	21	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	3072	Mr.Un1k0d3r
Big Brother is watching	1	4299	Mr.Un1k0d3r
Hacking skill are optional	1	254	Breached Company
Looking for password file	1	4478	Mr.Un1k0d3r
Area 51	1	2874	Mr.Un1k0d3r
Headache	1	3729	Mr.Un1k0d3r
Security thru obscurity!	2	1019	Mr.Un1k0d3r
PHP Fairy	2	949	nic-Lovin
XSS Challenge 2	2	530	Mr.Un1k0d3r
XSS Challenge 1	2	542	Mr.Un1k0d3r
Admin Portal	2	1174	Mr.Un1k0d3r
Password reset	2	978	Mr.Un1k0d3r
Malicious upload	2	596	Mr.Un1k0d3r
Captcha I	2	559	SynneR
Unreadable captcha	2	400	SynneR
Password reset reloaded	3	358	Mr.Un1k0d3r
PHP feature or 0day?	3	452	Mr.Un1k0d3r
Serial killer!	3	458	Mr.Un1k0d3r
JWT pitfall 1	3	64	Mr.Un1k0d3r
REST in peace	3	212	GoSec CTF 2014
Captcha IV	3	36	FadedForEver
NeuroSoft: Observation Unit Center	3	56	NSEC 2019 (ldionmarcil)
Beyond Reality Part 1	3	50	NSEC 2019 (ldionmarcil)
XSS Challenge 3	3	205	Mr.Un1k0d3r
XSS Challenge 4	3	215	Mr.Un1k0d3r
Facebook will never forget this one	3	224	Mr.Un1k0d3r
UploadStar	3	45	nopernik
Gift as a Service Part 1	3	55	H0H0H0 Day (R0 team)
Looking for the flag?	3	731	Mr.Un1k0d3r
Captcha III	4	57	mbergeron
Propaganda mail	4	243	NSEC 2015
Captcha II	4	144	SynneR
Read the unreadable	5	116	Mr.Un1k0d3r
Freedom Firewall	5	126	NSEC 2015
Timesheet As a Service	5	33	Mr.Un1k0d3r
Password Reset As a Service	5	60	Mr.Un1k0d3r
UploadStar Reloaded	5	27	nopernik
Super Lottery	5	83	davidlebr1
Beyond Reality Part 2	5	32	NSEC 2019 (ldionmarcil)
The archive	5	25	NSEC 2019 (HoLyVieR)
Lost API	5	37	NSEC 2019 (HoLyVieR)
PHP feature or 0day reloaded?	6	74	Mr.Un1k0d3r
I hate this one	6	223	Mr.Un1k0d3r
XSS Challenge 5	6	132	Mr.Un1k0d3r
Serial killer part 2	6	48	HoLyVieR
Orao's factory	6	118	NSEC 2015
Ping It!	7	33	mnadeau
Super Lottery Reloaded	7	31	davidlebr1 Feat mbergeron
XPATH of hell!	7	135	Francois L. Feat Mr.Un1k0d3r
Secure Mail	8	82	GoSec CTF 2014
Looking for god in your life?	8	65	NSEC 2015
Lotto 8/33	11	7	fishinspace

Flag statistics (187712 submitted so far)

Number of points	Number of validation	Number of points	Number of validation
18 points	12	15 points	17
14 points	70	13 points	49
12 points	154	11 points	48
10 points	323	9 points	197
8 points	1048	7 points	2442
6 points	5001	5 points	5142
4 points	11170	3 points	22251
2 points	61277	1 points	78511

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.