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 96 Challenges

Results Name Validations Number of points ↓↑  Explanation for the scores Difficulty  Difficulty Author Note  Notation Solution Date
pas_valide HTML - Source code 48% 173711 5 g0uZ 5 3 October 2006
pas_valide Weak password 31% 112360 10 g0uZ 7 3 October 2006
pas_valide PHP - Command injection 19% 68496 10 sambecks 10 20 September 2017
pas_valide HTTP - IP restriction bypass 9% 30989 10 Cyrhades 8 23 March 2021
pas_valide HTTP - User-agent 24% 86011 10 g0uZ 10 3 October 2006
pas_valide HTTP - Open redirect 19% 68486 10 Swissky 10 2 August 2017
pas_valide API - Broken Access 2% 5549 15 Nishacid , Mika 4 18 January 2024
pas_valide Backup file 16% 55298 15 g0uZ 10 27 February 2011
pas_valide HTTP - Directory indexing 22% 78965 15 g0uZ 7 7 October 2006
pas_valide HTTP - Headers 16% 55928 15 Arod 9 11 January 2015
pas_valide HTTP - POST 14% 50857 15 Th1b4ud 10 14 August 2018
pas_valide HTTP - Improper redirect 12% 43567 15 Arod 10 26 November 2014
pas_valide HTTP - Verb tampering 14% 47364 15 g0uZ 10 3 February 2011
pas_valide Install files 13% 44731 15 g0uZ 7 7 October 2006
pas_valide Nginx - Alias Misconfiguration 1% 2935 15 .Yo0x 2 27 September 2024
pas_valide Nginx - Root Location Misconfiguration 1% 1115 15 .Yo0x 0 27 September 2024
pas_valide GraphQL - Introspection 2% 4103 20 apges01 4 19 January 2023
pas_valide XSS - Server Side 1% 3062 20 Elf 4 23 June 2023
pas_valide Insecure Code Management 4% 14242 20 Swissky 6 29 September 2019
pas_valide JWT - Introduction 5% 18034 20 Kn0wledge 5 21 August 2019
pas_valide Flask - Unsecure session 1% 3038 20 Sanlokii 1 29 November 2023
pas_valide API - Mass Assignment 1% 3413 20 Nishacid , Mika 2 18 January 2024
pas_valide File upload - MIME type 8% 28824 20 g0uZ 10 26 December 2012
pas_valide HTTP - Cookies 13% 46686 20 g0uZ 8 7 October 2006
pas_valide CRLF 9% 32366 20 g0uZ 7 31 July 2011
pas_valide File upload - Double extensions 10% 35758 20 g0uZ 10 24 December 2012
pas_valide PHP - assert() 5% 15904 25 Birdy42 10 26 November 2016
pas_valide Python - Server-side Template Injection Introduction 2% 4889 25 Podalirius 7 7 September 2021
pas_valide PHP - Remote Xdebug 1% 1548 25 mayfly 4 18 March 2020
pas_valide PHP - Filters 6% 20178 25 g0uZ 3 27 February 2011
pas_valide PHP - register globals 5% 16220 25 g0uZ 2 8 October 2011
pas_valide JWT - Unsecure File Signature 1% 2514 25 Nishacid , Mika 3 23 February 2023
pas_valide JWT - Weak secret 4% 12530 25 Jrmbt 7 21 August 2019
pas_valide JWT - Revoked token 2% 6448 25 ArnC 6 20 March 2020
pas_valide File upload - Null byte 7% 24540 25 g0uZ 4 26 December 2012
pas_valide Directory traversal 10% 36150 25 g0uZ 3 31 July 2011
pas_valide PHP - Apache configuration 1% 2653 25 erk3 , nemoz 4 8 July 2022
pas_valide Node - Eval 1% 3089 30 Mhd_Root 7 24 February 2021
pas_valide XSLT - Code execution 2% 3828 30 ghozt 5 16 July 2017
pas_valide SQL injection - String 7% 22492 30 g0uZ 10 24 December 2012
pas_valide SQL injection - Authentication - GBK 3% 10152 30 dvor4x 4 2 December 2015
pas_valide SQL injection - Authentication 14% 47323 30 g0uZ 11 27 February 2011
pas_valide Remote File Inclusion 4% 12102 30 g0uZ 8 25 November 2015
pas_valide PHP - type juggling 3% 9070 30 vic 4 10 March 2016
pas_valide PHP - preg_replace() 3% 9282 30 sambecks 4 2 March 2016
pas_valide PHP - Loose Comparison 3% 7466 30 ghozt 4 10 January 2018
pas_valide Nginx - SSRF Misconfiguration 1% 273 30 .Yo0x 0 27 September 2024
pas_valide Local File Inclusion 8% 26119 30 g0uZ 4 2 October 2011
pas_valide JWT - Header Injection 1% 1356 30 Nishacid , Mika 2 23 February 2023
pas_valide JWT - Public key 2% 4054 30 Jrmbt 5 21 August 2019
pas_valide Java - Server-side Template Injection 4% 11028 30 righettod 6 29 November 2015
pas_valide Command injection - Filter bypass 3% 7869 30 sambecks 6 20 September 2017
pas_valide GraphQL - Injection 1% 878 30 apges01 2 19 January 2023
pas_valide Flask - Development server 1% 1123 30 Sanlokii 1 29 November 2023
pas_valide File upload - ZIP 3% 9907 30 ghozt 3 3 August 2017
pas_valide Local File Inclusion - Double encoding 4% 13166 30 zM_ 4 13 June 2016
pas_valide SQL injection - Numeric 5% 15573 35 g0uZ 7 24 December 2012
pas_valide Yaml - Deserialization 1% 1498 35 Nishacid 2 20 April 2021
pas_valide XPath injection - Authentication 2% 6775 35 g0uZ 6 27 December 2012
pas_valide XML External Entity 2% 5810 35 sambecks 2 20 October 2014
pas_valide SQL Truncation 2% 6966 35 Geluchat 2 1 May 2015
pas_valide SQL Injection - Routed 2% 5585 35 soka 5 24 December 2016
pas_valide NoSQL injection - Authentication 3% 7916 35 mastho 8 31 May 2015
pas_valide PHP - Serialization 2% 6898 35 Arod 3 3 February 2014
pas_valide PHP - Path Truncation 2% 5562 35 Geluchat 6 25 March 2015
pas_valide Node - Serialize 1% 1360 35 Mhd_Root 2 24 February 2021
pas_valide LDAP injection - Authentication 3% 10614 35 g0uZ 8 26 May 2013
pas_valide JWT - Unsecure Key Handling 1% 889 35 Nishacid , Mika 5 23 February 2023
pas_valide Elixir - EEx 1% 360 35 lolo42 1 29 November 2023
pas_valide PHP - Eval - Advanced filters bypass 1% 648 40 Podalirius 2 8 July 2022
pas_valide XPath injection - String 2% 4028 40 g0uZ 5 26 May 2013
pas_valide SQL injection - File reading 2% 6060 40 Arod 3 19 October 2014
pas_valide SQL injection - Insert 1% 3276 40 sambecks 4 23 February 2015
pas_valide SQL injection - Error 3% 8216 40 sambecks 5 4 March 2015
pas_valide GraphQL - Mutation 1% 1631 40 CanardMandarin 2 20 October 2020
pas_valide PHP - Eval 2% 3754 40 chmod 10 8 November 2018
pas_valide Local File Inclusion - Wrappers 2% 3781 40 sambecks 4 2 March 2016
pas_valide Java - Spring Boot 1% 2399 40 dvor4x 3 24 December 2016
pas_valide GraphQL - Backend injection 1% 482 40 apges01 1 19 January 2023
pas_valide API - Broken Access 2 1% 592 40 Nishacid , Mika 1 18 January 2024
pas_valide File upload - Polyglot 1% 511 45 Cyxo 1 8 July 2022
pas_valide NodeJS - Prototype Pollution Bypass 1% 578 45 Worty 1 22 October 2021
pas_valide NoSQL injection - Blind 1% 3131 45 ghozt 6 26 November 2016
pas_valide SQL injection - Time based 2% 5989 45 ycam 4 11 September 2015
pas_valide SQL injection - Blind 3% 7937 50 g0uZ 6 27 February 2011
pas_valide NodeJS - vm escape 1% 795 50 Podalirius 1 15 April 2021
pas_valide Server Side Request Forgery 1% 1975 50 sambecks 7 22 June 2018
pas_valide Java - Custom gadget deserialization 1% 220 50 Elweth 0 28 December 2023
pas_valide LDAP injection - Blind 1% 3554 55 g0uZ 2 8 June 2013
pas_valide PHP - Unserialize overflow 1% 808 55 mayfly 2 4 April 2020
pas_valide PHP - Unserialize Pop Chain 1% 748 55 Worty 2 22 October 2021
pas_valide SQL Injection - Second Order 1% 248 55 k4ndar3c 1 29 November 2023
pas_valide Python - dotenv 1% 99 70 jrjgjk 0 27 September 2024
pas_valide Python - Blind SSTI Filters Bypass 1% 713 75 Podalirius 5 7 September 2021
pas_valide XPath injection - Blind 1% 2439 75 g0uZ 5 27 December 2012
pas_valide SQL injection - Filter bypass 1% 3060 80 sambecks 7 21 July 2014

Challenge Results Challenge Results

Pseudo Challenge Lang Date
Emilien Web - Serveur  PHP - Injection de commande fr 4 June 2025 at 15:14
Emilien Web - Serveur  Mot de passe faible fr 4 June 2025 at 15:14
obirn Web - Serveur  JWT - Clé publique fr 4 June 2025 at 15:14
Emilien Web - Serveur  HTTP - Open redirect fr 4 June 2025 at 15:14
UnBonWhisky Web - Serveur  JWT - Introduction fr 4 June 2025 at 15:13
sukuna Web - Serveur  JWT - Jeton révoqué fr 4 June 2025 at 15:09
rayaanokoji Web - Serveur  Injection de commande - Contournement de filtre fr 4 June 2025 at 15:09
PhoenixFarfelu Web - Serveur  Python - Server-side Template Injection Introduction fr 4 June 2025 at 15:06
root_err Web - Serveur  JWT - Secret faible fr 4 June 2025 at 15:06
UnBonWhisky Web - Serveur  Flask - Unsecure session fr 4 June 2025 at 15:02