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 47% 187013 5 g0uZ 6 3 October 2006
pas_valide HTTP - User-agent 24% 92614 10 g0uZ 10 3 October 2006
pas_valide Weak password 31% 119825 10 g0uZ 7 3 October 2006
pas_valide HTTP - Directory indexing 22% 84110 15 g0uZ 7 7 October 2006
pas_valide Install files 12% 47425 15 g0uZ 7 7 October 2006
pas_valide HTTP - Cookies 13% 49743 20 g0uZ 8 7 October 2006
pas_valide HTTP - Verb tampering 13% 50402 15 g0uZ 10 3 February 2011
pas_valide SQL injection - Authentication 13% 50854 30 g0uZ 11 27 February 2011
pas_valide SQL injection - Blind 3% 8561 50 g0uZ 6 27 February 2011
pas_valide Backup file 15% 58673 15 g0uZ 10 27 February 2011
pas_valide PHP - Filters 6% 21367 25 g0uZ 3 27 February 2011
pas_valide CRLF 9% 34051 20 g0uZ 7 31 July 2011
pas_valide Directory traversal 10% 38596 25 g0uZ 3 31 July 2011
pas_valide Local File Inclusion 7% 27829 30 g0uZ 4 2 October 2011
pas_valide PHP - register globals 5% 17177 25 g0uZ 2 8 October 2011
pas_valide SQL injection - Numeric 5% 16818 35 g0uZ 7 24 December 2012
pas_valide File upload - Double extensions 10% 38134 20 g0uZ 10 24 December 2012
pas_valide SQL injection - String 7% 24237 30 g0uZ 10 24 December 2012
pas_valide File upload - MIME type 8% 30810 20 g0uZ 10 26 December 2012
pas_valide File upload - Null byte 7% 26162 25 g0uZ 4 26 December 2012
pas_valide XPath injection - Authentication 2% 7194 35 g0uZ 6 27 December 2012
pas_valide XPath injection - Blind 1% 2681 75 g0uZ 5 27 December 2012
pas_valide XPath injection - String 2% 4265 40 g0uZ 5 26 May 2013
pas_valide LDAP injection - Authentication 3% 11293 35 g0uZ 8 26 May 2013
pas_valide LDAP injection - Blind 1% 3816 55 g0uZ 2 8 June 2013
pas_valide PHP - Serialization 2% 7386 35 Arod 3 3 February 2014
pas_valide SQL injection - Filter bypass 1% 3520 80 sambecks 7 21 July 2014
pas_valide SQL injection - File reading 2% 6682 40 Arod 3 19 October 2014
pas_valide XML External Entity 2% 6260 35 sambecks 2 20 October 2014
pas_valide HTTP - Improper redirect 12% 46503 15 Arod 10 26 November 2014
pas_valide HTTP - Headers 16% 59911 15 Arod 9 11 January 2015
pas_valide SQL injection - Insert 1% 3577 40 sambecks 4 23 February 2015
pas_valide SQL injection - Error 3% 9079 40 sambecks 5 4 March 2015
pas_valide PHP - Path Truncation 2% 5931 35 Geluchat 7 25 March 2015
pas_valide SQL Truncation 2% 7592 35 Geluchat 2 1 May 2015
pas_valide NoSQL injection - Authentication 3% 8528 35 mastho 8 31 May 2015
pas_valide SQL injection - Time based 2% 6460 45 ycam 4 11 September 2015
pas_valide Remote File Inclusion 4% 12935 30 g0uZ 8 25 November 2015
pas_valide Java - Server-side Template Injection 3% 11891 30 righettod 6 29 November 2015
pas_valide SQL injection - Authentication - GBK 3% 11046 30 dvor4x 4 2 December 2015
pas_valide PHP - preg_replace() 3% 9856 30 sambecks 4 2 March 2016
pas_valide Local File Inclusion - Wrappers 2% 4155 40 sambecks 4 2 March 2016
pas_valide PHP - type juggling 3% 9644 30 vic 4 10 March 2016
pas_valide Local File Inclusion - Double encoding 4% 14140 30 zM_ 4 13 June 2016
pas_valide PHP - assert() 5% 17002 25 Birdy42 10 26 November 2016
pas_valide NoSQL injection - Blind 1% 3461 45 ghozt 6 26 November 2016
pas_valide SQL Injection - Routed 2% 6096 35 soka 5 24 December 2016
pas_valide Java - Spring Boot 1% 2588 40 dvor4x 3 24 December 2016
pas_valide XSLT - Code execution 2% 4178 30 ghozt 5 16 July 2017
pas_valide HTTP - Open redirect 19% 73952 10 Swissky 10 2 August 2017
pas_valide File upload - ZIP 3% 10856 30 ghozt 3 3 August 2017
pas_valide PHP - Command injection 19% 74423 10 sambecks 10 20 September 2017
pas_valide Command injection - Filter bypass 3% 8727 30 sambecks 6 20 September 2017
pas_valide PHP - Loose Comparison 3% 8067 30 ghozt 4 10 January 2018
pas_valide Server Side Request Forgery 1% 2150 50 sambecks 7 22 June 2018
pas_valide HTTP - POST 14% 54985 15 Th1b4ud 10 14 August 2018
pas_valide PHP - Eval 2% 4168 40 chmod 10 8 November 2018
pas_valide JWT - Public key 2% 4715 30 Jrmbt 5 21 August 2019
pas_valide JWT - Weak secret 4% 13982 25 Jrmbt 8 21 August 2019
pas_valide JWT - Introduction 6% 20069 20 Kn0wledge 5 21 August 2019
pas_valide Insecure Code Management 4% 15503 20 Swissky 6 29 September 2019
pas_valide PHP - Remote Xdebug 1% 1775 25 mayfly 4 18 March 2020
pas_valide JWT - Revoked token 2% 7552 25 ArnC 6 20 March 2020
pas_valide PHP - Unserialize overflow 1% 948 55 mayfly 2 4 April 2020
pas_valide GraphQL - Mutation 1% 1858 40 CanardMandarin 2 20 October 2020
pas_valide Node - Eval 1% 3554 30 Mhd_Root 8 24 February 2021
pas_valide Node - Serialize 1% 1628 35 Mhd_Root 2 24 February 2021
pas_valide HTTP - IP restriction bypass 10% 37145 10 Cyrhades 8 23 March 2021
pas_valide NodeJS - vm escape 1% 949 50 Podalirius 2 15 April 2021
pas_valide Yaml - Deserialization 1% 1752 35 Nishacid 2 20 April 2021
pas_valide Python - Server-side Template Injection Introduction 2% 5885 25 Podalirius 7 7 September 2021
pas_valide Python - Blind SSTI Filters Bypass 1% 917 75 Podalirius 5 7 September 2021
pas_valide NodeJS - Prototype Pollution Bypass 1% 692 45 Worty 1 22 October 2021
pas_valide PHP - Unserialize Pop Chain 1% 964 55 Worty 2 22 October 2021
pas_valide PHP - Apache configuration 1% 3301 25 erk3 , nemoz 4 8 July 2022
pas_valide PHP - Eval - Advanced filters bypass 1% 836 40 Podalirius 2 8 July 2022
pas_valide File upload - Polyglot 1% 789 45 Cyxo 1 8 July 2022
pas_valide GraphQL - Introspection 2% 5248 20 apges01 4 19 January 2023
pas_valide GraphQL - Injection 1% 1322 30 apges01 2 19 January 2023
pas_valide GraphQL - Backend injection 1% 701 40 apges01 1 19 January 2023
pas_valide JWT - Unsecure File Signature 1% 3428 25 Nishacid , Mika 3 23 February 2023
pas_valide JWT - Header Injection 1% 1868 30 Nishacid , Mika 2 23 February 2023
pas_valide JWT - Unsecure Key Handling 1% 1229 35 Nishacid , Mika 5 23 February 2023
pas_valide XSS - Server Side 2% 4215 20 Elf 4 23 June 2023
pas_valide SQL Injection - Second Order 1% 404 55 k4ndar3c 1 29 November 2023
pas_valide Flask - Development server 1% 1625 30 Sanlokii 1 29 November 2023
pas_valide Elixir - EEx 1% 608 35 lolo42 1 29 November 2023
pas_valide Flask - Unsecure session 2% 4308 20 Sanlokii 1 29 November 2023
pas_valide Java - Custom gadget deserialization 1% 418 50 Elweth 0 28 December 2023
pas_valide API - Broken Access 3% 9006 15 Nishacid , Mika 4 18 January 2024
pas_valide API - Mass Assignment 2% 5248 20 Nishacid , Mika 2 18 January 2024
pas_valide API - Broken Access 2 1% 990 40 Nishacid , Mika 1 18 January 2024
pas_valide Python - dotenv 1% 292 70 jrjgjk 1 27 September 2024
pas_valide Nginx - SSRF Misconfiguration 1% 1026 30 .Yo0x 1 27 September 2024
pas_valide Nginx - Root Location Misconfiguration 1% 3876 15 .Yo0x 2 27 September 2024
pas_valide Nginx - Alias Misconfiguration 2% 5432 15 .Yo0x 3 27 September 2024
pas_valide Ruby on Rails - ransack 1% 350 30 koma 0 23 June 2025

Challenge Results Challenge Results

Pseudo Challenge Lang Date
kai1337 Web - Server  SQL injection - Error ru 14 July 2026 at 18:26
Sylv1 Web - Serveur  Flask - Unsecure session fr 14 July 2026 at 18:24
Yassine Web - Serveur  Fichier de sauvegarde fr 14 July 2026 at 18:19
sosso1981 Web - Serveur  PHP - Filters fr 14 July 2026 at 18:05
ordimaker Web - Serveur  HTTP - Open redirect fr 14 July 2026 at 18:03
ghaniturismo Web - Server  JWT - Weak secret en 14 July 2026 at 18:01
Coatel Web - Serveur  SQL injection - En aveugle fr 14 July 2026 at 18:01
ekdaz Web - Serveur  File upload - ZIP fr 14 July 2026 at 17:59
ekdaz Web - Serveur  PHP - assert() fr 14 July 2026 at 17:52
mohamed Web - Server  JWT - Weak secret en 14 July 2026 at 17:44