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% 175355 5 g0uZ 6 3 October 2006
pas_valide Weak password 31% 113330 10 g0uZ 7 3 October 2006
pas_valide PHP - Command injection 19% 69290 10 sambecks 10 20 September 2017
pas_valide HTTP - IP restriction bypass 9% 31776 10 Cyrhades 8 23 March 2021
pas_valide HTTP - Open redirect 19% 69170 10 Swissky 10 2 August 2017
pas_valide HTTP - User-agent 24% 86837 10 g0uZ 10 3 October 2006
pas_valide API - Broken Access 2% 6012 15 Nishacid , Mika 4 18 January 2024
pas_valide Backup file 16% 55765 15 g0uZ 10 27 February 2011
pas_valide HTTP - Directory indexing 22% 79649 15 g0uZ 7 7 October 2006
pas_valide HTTP - Headers 16% 56438 15 Arod 9 11 January 2015
pas_valide HTTP - POST 14% 51377 15 Th1b4ud 10 14 August 2018
pas_valide HTTP - Improper redirect 12% 43960 15 Arod 10 26 November 2014
pas_valide HTTP - Verb tampering 13% 47769 15 g0uZ 10 3 February 2011
pas_valide Install files 13% 45103 15 g0uZ 7 7 October 2006
pas_valide Nginx - Alias Misconfiguration 1% 3286 15 .Yo0x 3 27 September 2024
pas_valide Nginx - Root Location Misconfiguration 1% 1573 15 .Yo0x 1 27 September 2024
pas_valide GraphQL - Introspection 2% 4255 20 apges01 4 19 January 2023
pas_valide JWT - Introduction 5% 18318 20 Kn0wledge 5 21 August 2019
pas_valide HTTP - Cookies 13% 47065 20 g0uZ 8 7 October 2006
pas_valide XSS - Server Side 1% 3214 20 Elf 4 23 June 2023
pas_valide Flask - Unsecure session 1% 3212 20 Sanlokii 1 29 November 2023
pas_valide API - Mass Assignment 1% 3667 20 Nishacid , Mika 2 18 January 2024
pas_valide File upload - MIME type 8% 29117 20 g0uZ 10 26 December 2012
pas_valide Insecure Code Management 4% 14421 20 Swissky 6 29 September 2019
pas_valide CRLF 9% 32604 20 g0uZ 7 31 July 2011
pas_valide File upload - Double extensions 10% 36100 20 g0uZ 10 24 December 2012
pas_valide PHP - assert() 5% 16058 25 Birdy42 10 26 November 2016
pas_valide Python - Server-side Template Injection Introduction 2% 5032 25 Podalirius 7 7 September 2021
pas_valide PHP - register globals 5% 16366 25 g0uZ 2 8 October 2011
pas_valide PHP - Apache configuration 1% 2748 25 erk3 , nemoz 4 8 July 2022
pas_valide PHP - Remote Xdebug 1% 1580 25 mayfly 4 18 March 2020
pas_valide JWT - Unsecure File Signature 1% 2658 25 Nishacid , Mika 3 23 February 2023
pas_valide JWT - Weak secret 4% 12738 25 Jrmbt 7 21 August 2019
pas_valide JWT - Revoked token 2% 6601 25 ArnC 6 20 March 2020
pas_valide File upload - Null byte 7% 24785 25 g0uZ 4 26 December 2012
pas_valide Directory traversal 10% 36501 25 g0uZ 3 31 July 2011
pas_valide PHP - Filters 6% 20344 25 g0uZ 3 27 February 2011
pas_valide Node - Eval 1% 3149 30 Mhd_Root 7 24 February 2021
pas_valide XSLT - Code execution 2% 3884 30 ghozt 5 16 July 2017
pas_valide SQL injection - String 7% 22727 30 g0uZ 10 24 December 2012
pas_valide SQL injection - Authentication - GBK 3% 10269 30 dvor4x 4 2 December 2015
pas_valide SQL injection - Authentication 13% 47758 30 g0uZ 11 27 February 2011
pas_valide Ruby on Rails - ransack 1% 49 30 koma 0 23 June 2025
pas_valide Remote File Inclusion 4% 12217 30 g0uZ 8 25 November 2015
pas_valide PHP - type juggling 3% 9153 30 vic 4 10 March 2016
pas_valide PHP - preg_replace() 3% 9369 30 sambecks 4 2 March 2016
pas_valide PHP - Loose Comparison 3% 7562 30 ghozt 4 10 January 2018
pas_valide Nginx - SSRF Misconfiguration 1% 375 30 .Yo0x 1 27 September 2024
pas_valide Local File Inclusion 8% 26324 30 g0uZ 4 2 October 2011
pas_valide JWT - Header Injection 1% 1432 30 Nishacid , Mika 2 23 February 2023
pas_valide JWT - Public key 2% 4141 30 Jrmbt 5 21 August 2019
pas_valide Java - Server-side Template Injection 4% 11145 30 righettod 6 29 November 2015
pas_valide Command injection - Filter bypass 3% 7986 30 sambecks 6 20 September 2017
pas_valide GraphQL - Injection 1% 936 30 apges01 2 19 January 2023
pas_valide Flask - Development server 1% 1218 30 Sanlokii 1 29 November 2023
pas_valide File upload - ZIP 3% 10055 30 ghozt 3 3 August 2017
pas_valide Local File Inclusion - Double encoding 4% 13312 30 zM_ 4 13 June 2016
pas_valide SQL injection - Numeric 5% 15752 35 g0uZ 7 24 December 2012
pas_valide Yaml - Deserialization 1% 1545 35 Nishacid 2 20 April 2021
pas_valide XPath injection - Authentication 2% 6850 35 g0uZ 6 27 December 2012
pas_valide XML External Entity 2% 5865 35 sambecks 2 20 October 2014
pas_valide SQL Truncation 2% 7048 35 Geluchat 2 1 May 2015
pas_valide SQL Injection - Routed 2% 5662 35 soka 5 24 December 2016
pas_valide NoSQL injection - Authentication 3% 8011 35 mastho 8 31 May 2015
pas_valide PHP - Serialization 2% 6980 35 Arod 3 3 February 2014
pas_valide PHP - Path Truncation 2% 5614 35 Geluchat 6 25 March 2015
pas_valide Node - Serialize 1% 1406 35 Mhd_Root 2 24 February 2021
pas_valide LDAP injection - Authentication 3% 10726 35 g0uZ 8 26 May 2013
pas_valide JWT - Unsecure Key Handling 1% 948 35 Nishacid , Mika 5 23 February 2023
pas_valide Elixir - EEx 1% 387 35 lolo42 1 29 November 2023
pas_valide PHP - Eval - Advanced filters bypass 1% 674 40 Podalirius 2 8 July 2022
pas_valide XPath injection - String 2% 4075 40 g0uZ 5 26 May 2013
pas_valide SQL injection - File reading 2% 6135 40 Arod 3 19 October 2014
pas_valide SQL injection - Insert 1% 3318 40 sambecks 4 23 February 2015
pas_valide SQL injection - Error 3% 8332 40 sambecks 5 4 March 2015
pas_valide GraphQL - Mutation 1% 1659 40 CanardMandarin 2 20 October 2020
pas_valide PHP - Eval 2% 3808 40 chmod 10 8 November 2018
pas_valide Local File Inclusion - Wrappers 2% 3827 40 sambecks 4 2 March 2016
pas_valide Java - Spring Boot 1% 2426 40 dvor4x 3 24 December 2016
pas_valide GraphQL - Backend injection 1% 507 40 apges01 1 19 January 2023
pas_valide API - Broken Access 2 1% 640 40 Nishacid , Mika 1 18 January 2024
pas_valide File upload - Polyglot 1% 530 45 Cyxo 1 8 July 2022
pas_valide NodeJS - Prototype Pollution Bypass 1% 603 45 Worty 1 22 October 2021
pas_valide NoSQL injection - Blind 1% 3180 45 ghozt 6 26 November 2016
pas_valide SQL injection - Time based 2% 6062 45 ycam 4 11 September 2015
pas_valide SQL injection - Blind 3% 8025 50 g0uZ 6 27 February 2011
pas_valide NodeJS - vm escape 1% 813 50 Podalirius 1 15 April 2021
pas_valide Server Side Request Forgery 1% 2004 50 sambecks 7 22 June 2018
pas_valide Java - Custom gadget deserialization 1% 246 50 Elweth 0 28 December 2023
pas_valide LDAP injection - Blind 1% 3586 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% 778 55 Worty 2 22 October 2021
pas_valide SQL Injection - Second Order 1% 267 55 k4ndar3c 1 29 November 2023
pas_valide Python - dotenv 1% 125 70 jrjgjk 1 27 September 2024
pas_valide Python - Blind SSTI Filters Bypass 1% 728 75 Podalirius 5 7 September 2021
pas_valide XPath injection - Blind 1% 2472 75 g0uZ 5 27 December 2012
pas_valide SQL injection - Filter bypass 1% 3107 80 sambecks 7 21 July 2014

Challenge Results Challenge Results

Pseudo Challenge Lang Date
horcruxx Web - Serveur  PHP - Injection de commande fr 29 July 2025 at 15:04
Raphaël Faure Web - Serveur  HTTP - Open redirect fr 29 July 2025 at 15:00
zmt-s28s Web - Serveur  HTTP - POST fr 29 July 2025 at 14:59
zmt-s28s Web - Serveur  HTTP - Headers fr 29 July 2025 at 14:59
stas Web - Server  PHP - register globals en 29 July 2025 at 14:58
horcruxx Web - Serveur  Mot de passe faible fr 29 July 2025 at 14:58
horcruxx Web - Serveur  HTTP - User-agent fr 29 July 2025 at 14:58
nomiskraw Web - Serveur  Local File Inclusion fr 29 July 2025 at 14:57
zmt-s28s Web - Serveur  HTTP - Cookies fr 29 July 2025 at 14:56
Mehdi Web - Serveur  HTML - Code source fr 29 July 2025 at 14:56