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 HTML - Source code 48% 175056 5 g0uZ 6 3 October 2006
pas_valide HTTP - Open redirect 19% 69059 10 Swissky 10 2 August 2017
pas_valide HTTP - User-agent 24% 86706 10 g0uZ 10 3 October 2006
pas_valide Weak password 31% 113188 10 g0uZ 7 3 October 2006
pas_valide PHP - Command injection 19% 69184 10 sambecks 10 20 September 2017
pas_valide HTTP - IP restriction bypass 9% 31649 10 Cyrhades 8 23 March 2021
pas_valide Install files 13% 45047 15 g0uZ 7 7 October 2006
pas_valide File upload - MIME type 8% 29067 20 g0uZ 10 26 December 2012
pas_valide File upload - Double extensions 10% 36050 20 g0uZ 10 24 December 2012
pas_valide Nginx - Root Location Misconfiguration 1% 1503 15 .Yo0x 1 27 September 2024
pas_valide Nginx - Alias Misconfiguration 1% 3230 15 .Yo0x 3 27 September 2024
pas_valide CRLF 9% 32569 20 g0uZ 7 31 July 2011
pas_valide HTTP - Verb tampering 13% 47718 15 g0uZ 10 3 February 2011
pas_valide HTTP - POST 14% 51304 15 Th1b4ud 10 14 August 2018
pas_valide HTTP - Headers 16% 56369 15 Arod 9 11 January 2015
pas_valide HTTP - Directory indexing 22% 79560 15 g0uZ 7 7 October 2006
pas_valide Backup file 16% 55707 15 g0uZ 10 27 February 2011
pas_valide API - Broken Access 2% 5937 15 Nishacid , Mika 4 18 January 2024
pas_valide HTTP - Improper redirect 12% 43904 15 Arod 10 26 November 2014
pas_valide PHP - Serialization 2% 6962 35 Arod 3 3 February 2014
pas_valide XPath injection - Authentication 2% 6838 35 g0uZ 6 27 December 2012
pas_valide XML External Entity 2% 5849 35 sambecks 2 20 October 2014
pas_valide SQL Truncation 2% 7031 35 Geluchat 2 1 May 2015
pas_valide SQL Injection - Routed 2% 5644 35 soka 5 24 December 2016
pas_valide SQL injection - Numeric 5% 15733 35 g0uZ 7 24 December 2012
pas_valide LDAP injection - Authentication 3% 10703 35 g0uZ 8 26 May 2013
pas_valide PHP - Path Truncation 2% 5605 35 Geluchat 6 25 March 2015
pas_valide NoSQL injection - Authentication 3% 7998 35 mastho 8 31 May 2015
pas_valide Node - Serialize 1% 1398 35 Mhd_Root 2 24 February 2021
pas_valide JWT - Unsecure Key Handling 1% 940 35 Nishacid , Mika 5 23 February 2023
pas_valide Elixir - EEx 1% 384 35 lolo42 1 29 November 2023
pas_valide API - Broken Access 2 1% 633 40 Nishacid , Mika 1 18 January 2024
pas_valide XSLT - Code execution 2% 3875 30 ghozt 5 16 July 2017
pas_valide Yaml - Deserialization 1% 1536 35 Nishacid 2 20 April 2021
pas_valide XPath injection - String 2% 4069 40 g0uZ 5 26 May 2013
pas_valide GraphQL - Backend injection 1% 503 40 apges01 1 19 January 2023
pas_valide File upload - Polyglot 1% 526 45 Cyxo 1 8 July 2022
pas_valide SQL injection - Blind 3% 8008 50 g0uZ 6 27 February 2011
pas_valide Server Side Request Forgery 1% 1997 50 sambecks 7 22 June 2018
pas_valide NodeJS - vm escape 1% 810 50 Podalirius 1 15 April 2021
pas_valide SQL injection - Time based 2% 6049 45 ycam 4 11 September 2015
pas_valide NoSQL injection - Blind 1% 3166 45 ghozt 6 26 November 2016
pas_valide NodeJS - Prototype Pollution Bypass 1% 601 45 Worty 1 22 October 2021
pas_valide SQL injection - Authentication - GBK 3% 10250 30 dvor4x 4 2 December 2015
pas_valide GraphQL - Mutation 1% 1651 40 CanardMandarin 2 20 October 2020
pas_valide SQL injection - File reading 2% 6101 40 Arod 3 19 October 2014
pas_valide SQL injection - Insert 1% 3308 40 sambecks 4 23 February 2015
pas_valide SQL injection - Error 3% 8311 40 sambecks 5 4 March 2015
pas_valide PHP - Eval - Advanced filters bypass 1% 670 40 Podalirius 2 8 July 2022
pas_valide PHP - Eval 2% 3795 40 chmod 10 8 November 2018
pas_valide Local File Inclusion - Wrappers 2% 3816 40 sambecks 4 2 March 2016
pas_valide Java - Spring Boot 1% 2424 40 dvor4x 3 24 December 2016
pas_valide SQL injection - String 7% 22675 30 g0uZ 10 24 December 2012
pas_valide PHP - Loose Comparison 3% 7549 30 ghozt 4 10 January 2018
pas_valide SQL injection - Authentication 13% 47669 30 g0uZ 11 27 February 2011
pas_valide Directory traversal 10% 36459 25 g0uZ 3 31 July 2011
pas_valide PHP - Apache configuration 1% 2728 25 erk3 , nemoz 4 8 July 2022
pas_valide Ruby on Rails - ransack 1% 45 30 koma 0 23 June 2025
pas_valide JWT - Unsecure File Signature 1% 2631 25 Nishacid , Mika 3 23 February 2023
pas_valide JWT - Weak secret 4% 12704 25 Jrmbt 7 21 August 2019
pas_valide JWT - Revoked token 2% 6573 25 ArnC 6 20 March 2020
pas_valide File upload - Null byte 7% 24734 25 g0uZ 4 26 December 2012
pas_valide XSS - Server Side 1% 3180 20 Elf 4 23 June 2023
pas_valide PHP - register globals 5% 16340 25 g0uZ 2 8 October 2011
pas_valide JWT - Introduction 5% 18272 20 Kn0wledge 5 21 August 2019
pas_valide Insecure Code Management 4% 14394 20 Swissky 6 29 September 2019
pas_valide HTTP - Cookies 13% 47009 20 g0uZ 8 7 October 2006
pas_valide GraphQL - Introspection 2% 4221 20 apges01 4 19 January 2023
pas_valide Flask - Unsecure session 1% 3181 20 Sanlokii 1 29 November 2023
pas_valide API - Mass Assignment 1% 3618 20 Nishacid , Mika 2 18 January 2024
pas_valide PHP - Filters 6% 20319 25 g0uZ 3 27 February 2011
pas_valide PHP - assert() 5% 16030 25 Birdy42 10 26 November 2016
pas_valide PHP - Remote Xdebug 1% 1574 25 mayfly 4 18 March 2020
pas_valide Local File Inclusion 8% 26287 30 g0uZ 4 2 October 2011
pas_valide Remote File Inclusion 4% 12198 30 g0uZ 8 25 November 2015
pas_valide PHP - type juggling 3% 9143 30 vic 4 10 March 2016
pas_valide PHP - preg_replace() 3% 9357 30 sambecks 4 2 March 2016
pas_valide Python - Server-side Template Injection Introduction 2% 5003 25 Podalirius 7 7 September 2021
pas_valide Nginx - SSRF Misconfiguration 1% 358 30 .Yo0x 1 27 September 2024
pas_valide Local File Inclusion - Double encoding 4% 13289 30 zM_ 4 13 June 2016
pas_valide Node - Eval 1% 3137 30 Mhd_Root 7 24 February 2021
pas_valide JWT - Header Injection 1% 1420 30 Nishacid , Mika 2 23 February 2023
pas_valide JWT - Public key 2% 4125 30 Jrmbt 5 21 August 2019
pas_valide Java - Server-side Template Injection 4% 11120 30 righettod 6 29 November 2015
pas_valide Command injection - Filter bypass 3% 7963 30 sambecks 6 20 September 2017
pas_valide GraphQL - Injection 1% 922 30 apges01 2 19 January 2023
pas_valide Flask - Development server 1% 1203 30 Sanlokii 1 29 November 2023
pas_valide File upload - ZIP 3% 10023 30 ghozt 3 3 August 2017
pas_valide Java - Custom gadget deserialization 1% 244 50 Elweth 0 28 December 2023
pas_valide LDAP injection - Blind 1% 3581 55 g0uZ 2 8 June 2013
pas_valide PHP - Unserialize overflow 1% 819 55 mayfly 2 4 April 2020
pas_valide PHP - Unserialize Pop Chain 1% 772 55 Worty 2 22 October 2021
pas_valide SQL Injection - Second Order 1% 260 55 k4ndar3c 1 29 November 2023
pas_valide Python - dotenv 1% 121 70 jrjgjk 1 27 September 2024
pas_valide Python - Blind SSTI Filters Bypass 1% 726 75 Podalirius 5 7 September 2021
pas_valide XPath injection - Blind 1% 2468 75 g0uZ 5 27 December 2012
pas_valide SQL injection - Filter bypass 1% 3096 80 sambecks 7 21 July 2014

Challenge Results Challenge Results

Pseudo Challenge Lang Date
salaiphyo Web - Server  HTTP - Improper redirect en 25 July 2025 at 17:48
joe.boe Web - Server  HTTP - Directory indexing en 25 July 2025 at 17:47
carwyn61 Web - Server  SQL injection - Numeric en 25 July 2025 at 17:47
dhia Web - Serveur  Install files fr 25 July 2025 at 17:44
plume Web - Server  Install files en 25 July 2025 at 17:44
Peter17 Web - Serveur  SQL injection - Lecture de fichiers fr 25 July 2025 at 17:43
joe.boe Web - Server  HTTP - POST en 25 July 2025 at 17:43
LightRadio Web - Serveur  LDAP injection - Authentification fr 25 July 2025 at 17:40
croaker Web - Serveur  PHP - Sérialisation fr 25 July 2025 at 17:40
joe.boe Web - Server  HTTP - Headers en 25 July 2025 at 17:35