Web - Server Web - Server

Discover the mechanisms, protocols and technologies used on the Internet and learn to abuse them!

These challenges are designed to train users on HTML, HTTP and other server side mechanisms. The following series of challenges will cultivate a better understanding of techniques such as : Basic workings of multiple authentication mechanisms, handling form data, inner workings of web applications, etc. ...

Prerequisites:
– Understand HTML.
– Understand the HTTP protocol.
– Ability to manipulate a web browser.

challenges 97 Challenges

Results Name Validations ↓↑ Number of points  Explanation for the scores Difficulty  Difficulty Author Note  Notation Solution Date
pas_valide Ruby on Rails - ransack 1% 52 30 koma 0 23 June 2025
pas_valide Python - dotenv 1% 133 70 jrjgjk 1 27 September 2024
pas_valide Java - Custom gadget deserialization 1% 258 50 Elweth 0 28 December 2023
pas_valide SQL Injection - Second Order 1% 273 55 k4ndar3c 1 29 November 2023
pas_valide Elixir - EEx 1% 397 35 lolo42 1 29 November 2023
pas_valide Nginx - SSRF Misconfiguration 1% 399 30 .Yo0x 1 27 September 2024
pas_valide GraphQL - Backend injection 1% 515 40 apges01 1 19 January 2023
pas_valide File upload - Polyglot 1% 540 45 Cyxo 1 8 July 2022
pas_valide NodeJS - Prototype Pollution Bypass 1% 613 45 Worty 1 22 October 2021
pas_valide API - Broken Access 2 1% 656 40 Nishacid , Mika 1 18 January 2024
pas_valide PHP - Eval - Advanced filters bypass 1% 682 40 Podalirius 2 8 July 2022
pas_valide Python - Blind SSTI Filters Bypass 1% 740 75 Podalirius 5 7 September 2021
pas_valide PHP - Unserialize Pop Chain 1% 787 55 Worty 2 22 October 2021
pas_valide NodeJS - vm escape 1% 820 50 Podalirius 1 15 April 2021
pas_valide PHP - Unserialize overflow 1% 825 55 mayfly 2 4 April 2020
pas_valide GraphQL - Injection 1% 950 30 apges01 2 19 January 2023
pas_valide JWT - Unsecure Key Handling 1% 962 35 Nishacid , Mika 5 23 February 2023
pas_valide Flask - Development server 1% 1237 30 Sanlokii 1 29 November 2023
pas_valide Node - Serialize 1% 1418 35 Mhd_Root 2 24 February 2021
pas_valide JWT - Header Injection 1% 1457 30 Nishacid , Mika 2 23 February 2023
pas_valide Yaml - Deserialization 1% 1557 35 Nishacid 2 20 April 2021
pas_valide PHP - Remote Xdebug 1% 1586 25 mayfly 4 18 March 2020
pas_valide GraphQL - Mutation 1% 1671 40 CanardMandarin 2 20 October 2020
pas_valide Nginx - Root Location Misconfiguration 1% 1684 15 .Yo0x 1 27 September 2024
pas_valide Server Side Request Forgery 1% 2018 50 sambecks 7 22 June 2018
pas_valide Java - Spring Boot 1% 2432 40 dvor4x 3 24 December 2016
pas_valide XPath injection - Blind 1% 2483 75 g0uZ 5 27 December 2012
pas_valide JWT - Unsecure File Signature 1% 2694 25 Nishacid , Mika 3 23 February 2023
pas_valide PHP - Apache configuration 1% 2772 25 erk3 , nemoz 4 8 July 2022
pas_valide SQL injection - Filter bypass 1% 3123 80 sambecks 7 21 July 2014
pas_valide Node - Eval 1% 3172 30 Mhd_Root 7 24 February 2021
pas_valide NoSQL injection - Blind 1% 3196 45 ghozt 6 26 November 2016
pas_valide XSS - Server Side 1% 3260 20 Elf 4 23 June 2023
pas_valide Flask - Unsecure session 1% 3277 20 Sanlokii 1 29 November 2023
pas_valide SQL injection - Insert 1% 3335 40 sambecks 4 23 February 2015
pas_valide Nginx - Alias Misconfiguration 1% 3374 15 .Yo0x 3 27 September 2024
pas_valide LDAP injection - Blind 1% 3599 55 g0uZ 2 8 June 2013
pas_valide API - Mass Assignment 2% 3746 20 Nishacid , Mika 2 18 January 2024
pas_valide PHP - Eval 2% 3825 40 chmod 10 8 November 2018
pas_valide Local File Inclusion - Wrappers 2% 3852 40 sambecks 4 2 March 2016
pas_valide XSLT - Code execution 2% 3897 30 ghozt 5 16 July 2017
pas_valide XPath injection - String 2% 4086 40 g0uZ 5 26 May 2013
pas_valide JWT - Public key 2% 4170 30 Jrmbt 5 21 August 2019
pas_valide GraphQL - Introspection 2% 4300 20 apges01 4 19 January 2023
pas_valide Python - Server-side Template Injection Introduction 2% 5081 25 Podalirius 7 7 September 2021
pas_valide PHP - Path Truncation 2% 5634 35 Geluchat 6 25 March 2015
pas_valide SQL Injection - Routed 2% 5680 35 soka 5 24 December 2016
pas_valide XML External Entity 2% 5887 35 sambecks 2 20 October 2014
pas_valide SQL injection - Time based 2% 6081 45 ycam 4 11 September 2015
pas_valide API - Broken Access 2% 6144 15 Nishacid , Mika 4 18 January 2024
pas_valide SQL injection - File reading 2% 6164 40 Arod 3 19 October 2014
pas_valide JWT - Revoked token 2% 6656 25 ArnC 6 20 March 2020
pas_valide XPath injection - Authentication 2% 6870 35 g0uZ 6 27 December 2012
pas_valide PHP - Serialization 2% 7000 35 Arod 3 3 February 2014
pas_valide SQL Truncation 2% 7074 35 Geluchat 2 1 May 2015
pas_valide PHP - Loose Comparison 3% 7585 30 ghozt 4 10 January 2018
pas_valide Command injection - Filter bypass 3% 8029 30 sambecks 6 20 September 2017
pas_valide NoSQL injection - Authentication 3% 8039 35 mastho 8 31 May 2015
pas_valide SQL injection - Blind 3% 8042 50 g0uZ 6 27 February 2011
pas_valide SQL injection - Error 3% 8371 40 sambecks 5 4 March 2015
pas_valide PHP - type juggling 3% 9175 30 vic 4 10 March 2016
pas_valide PHP - preg_replace() 3% 9394 30 sambecks 4 2 March 2016
pas_valide File upload - ZIP 3% 10085 30 ghozt 3 3 August 2017
pas_valide SQL injection - Authentication - GBK 3% 10299 30 dvor4x 4 2 December 2015
pas_valide LDAP injection - Authentication 3% 10752 35 g0uZ 8 26 May 2013
pas_valide Java - Server-side Template Injection 4% 11183 30 righettod 6 29 November 2015
pas_valide Remote File Inclusion 4% 12257 30 g0uZ 8 25 November 2015
pas_valide JWT - Weak secret 4% 12803 25 Jrmbt 7 21 August 2019
pas_valide Local File Inclusion - Double encoding 4% 13368 30 zM_ 4 13 June 2016
pas_valide Insecure Code Management 4% 14469 20 Swissky 6 29 September 2019
pas_valide SQL injection - Numeric 5% 15796 35 g0uZ 7 24 December 2012
pas_valide PHP - assert() 5% 16089 25 Birdy42 10 26 November 2016
pas_valide PHP - register globals 5% 16401 25 g0uZ 2 8 October 2011
pas_valide JWT - Introduction 5% 18400 20 Kn0wledge 5 21 August 2019
pas_valide PHP - Filters 6% 20390 25 g0uZ 3 27 February 2011
pas_valide SQL injection - String 7% 22789 30 g0uZ 10 24 December 2012
pas_valide File upload - Null byte 7% 24841 25 g0uZ 4 26 December 2012
pas_valide Local File Inclusion 8% 26391 30 g0uZ 4 2 October 2011
pas_valide File upload - MIME type 8% 29184 20 g0uZ 10 26 December 2012
pas_valide HTTP - IP restriction bypass 9% 31960 10 Cyrhades 8 23 March 2021
pas_valide CRLF 9% 32670 20 g0uZ 7 31 July 2011
pas_valide File upload - Double extensions 10% 36174 20 g0uZ 10 24 December 2012
pas_valide Directory traversal 10% 36601 25 g0uZ 3 31 July 2011
pas_valide HTTP - Improper redirect 12% 44060 15 Arod 10 26 November 2014
pas_valide Install files 13% 45200 15 g0uZ 7 7 October 2006
pas_valide HTTP - Cookies 13% 47159 20 g0uZ 8 7 October 2006
pas_valide SQL injection - Authentication 13% 47862 30 g0uZ 11 27 February 2011
pas_valide HTTP - Verb tampering 13% 47874 15 g0uZ 10 3 February 2011
pas_valide HTTP - POST 14% 51509 15 Th1b4ud 10 14 August 2018
pas_valide Backup file 16% 55882 15 g0uZ 10 27 February 2011
pas_valide HTTP - Headers 16% 56558 15 Arod 9 11 January 2015
pas_valide HTTP - Open redirect 19% 69330 10 Swissky 10 2 August 2017
pas_valide PHP - Command injection 19% 69484 10 sambecks 10 20 September 2017
pas_valide HTTP - Directory indexing 22% 79792 15 g0uZ 7 7 October 2006
pas_valide HTTP - User-agent 24% 87018 10 g0uZ 10 3 October 2006
pas_valide Weak password 31% 113524 10 g0uZ 7 3 October 2006
pas_valide HTML - Source code 48% 175703 5 g0uZ 6 3 October 2006

Challenge Results Challenge Results

Pseudo Challenge Lang Date
l1nks Web - Server  HTTP - Cookies en 14 August 2025 at 22:30
l1nks Web - Server  HTTP - Verb tampering en 14 August 2025 at 22:28
l1nks Web - Server  HTTP - Improper redirect ru 14 August 2025 at 22:27
Greyboy2003 Web - Server  Python - Server-side Template Injection Introduction en 14 August 2025 at 22:21
eqite Web - Serveur  HTTP - Verb tampering fr 14 August 2025 at 22:17
abdelrhman_xx Web - Server  JWT - Public key en 14 August 2025 at 22:13
l1nks Web - Server  HTTP - POST ru 14 August 2025 at 22:09
l1nks Web - Server  HTTP - Headers ru 14 August 2025 at 22:07
Md. Mazad Ul Islam Web - Server  HTTP - User-agent en 14 August 2025 at 22:05
chrwahl Web - Server  CRLF en 14 August 2025 at 22:05