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% 175252 5 g0uZ 6 3 October 2006
pas_valide HTTP - User-agent 24% 86795 10 g0uZ 10 3 October 2006
pas_valide Weak password 31% 113281 10 g0uZ 7 3 October 2006
pas_valide HTTP - Directory indexing 22% 79621 15 g0uZ 7 7 October 2006
pas_valide Install files 13% 45090 15 g0uZ 7 7 October 2006
pas_valide HTTP - Cookies 13% 47052 20 g0uZ 8 7 October 2006
pas_valide HTTP - Verb tampering 13% 47753 15 g0uZ 10 3 February 2011
pas_valide SQL injection - Authentication 13% 47722 30 g0uZ 11 27 February 2011
pas_valide SQL injection - Blind 3% 8018 50 g0uZ 6 27 February 2011
pas_valide Backup file 16% 55750 15 g0uZ 10 27 February 2011
pas_valide PHP - Filters 6% 20332 25 g0uZ 3 27 February 2011
pas_valide CRLF 9% 32593 20 g0uZ 7 31 July 2011
pas_valide Directory traversal 10% 36491 25 g0uZ 3 31 July 2011
pas_valide Local File Inclusion 8% 26310 30 g0uZ 4 2 October 2011
pas_valide PHP - register globals 5% 16355 25 g0uZ 2 8 October 2011
pas_valide SQL injection - Numeric 5% 15742 35 g0uZ 7 24 December 2012
pas_valide File upload - Double extensions 10% 36086 20 g0uZ 10 24 December 2012
pas_valide SQL injection - String 7% 22701 30 g0uZ 10 24 December 2012
pas_valide File upload - MIME type 8% 29100 20 g0uZ 10 26 December 2012
pas_valide File upload - Null byte 7% 24769 25 g0uZ 4 26 December 2012
pas_valide XPath injection - Authentication 2% 6848 35 g0uZ 6 27 December 2012
pas_valide XPath injection - Blind 1% 2470 75 g0uZ 5 27 December 2012
pas_valide XPath injection - String 2% 4072 40 g0uZ 5 26 May 2013
pas_valide LDAP injection - Authentication 3% 10718 35 g0uZ 8 26 May 2013
pas_valide LDAP injection - Blind 1% 3583 55 g0uZ 2 8 June 2013
pas_valide PHP - Serialization 2% 6973 35 Arod 3 3 February 2014
pas_valide SQL injection - Filter bypass 1% 3103 80 sambecks 7 21 July 2014
pas_valide SQL injection - File reading 2% 6126 40 Arod 3 19 October 2014
pas_valide XML External Entity 2% 5856 35 sambecks 2 20 October 2014
pas_valide HTTP - Improper redirect 12% 43940 15 Arod 10 26 November 2014
pas_valide HTTP - Headers 16% 56416 15 Arod 9 11 January 2015
pas_valide SQL injection - Insert 1% 3312 40 sambecks 4 23 February 2015
pas_valide SQL injection - Error 3% 8322 40 sambecks 5 4 March 2015
pas_valide PHP - Path Truncation 2% 5609 35 Geluchat 6 25 March 2015
pas_valide SQL Truncation 2% 7040 35 Geluchat 2 1 May 2015
pas_valide NoSQL injection - Authentication 3% 8007 35 mastho 8 31 May 2015
pas_valide SQL injection - Time based 2% 6058 45 ycam 4 11 September 2015
pas_valide Remote File Inclusion 4% 12211 30 g0uZ 8 25 November 2015
pas_valide Java - Server-side Template Injection 4% 11139 30 righettod 6 29 November 2015
pas_valide SQL injection - Authentication - GBK 3% 10259 30 dvor4x 4 2 December 2015
pas_valide PHP - preg_replace() 3% 9367 30 sambecks 4 2 March 2016
pas_valide Local File Inclusion - Wrappers 2% 3819 40 sambecks 4 2 March 2016
pas_valide PHP - type juggling 3% 9151 30 vic 4 10 March 2016
pas_valide Local File Inclusion - Double encoding 4% 13302 30 zM_ 4 13 June 2016
pas_valide PHP - assert() 5% 16048 25 Birdy42 10 26 November 2016
pas_valide NoSQL injection - Blind 1% 3177 45 ghozt 6 26 November 2016
pas_valide SQL Injection - Routed 2% 5653 35 soka 5 24 December 2016
pas_valide Java - Spring Boot 1% 2426 40 dvor4x 3 24 December 2016
pas_valide XSLT - Code execution 2% 3880 30 ghozt 5 16 July 2017
pas_valide HTTP - Open redirect 19% 69130 10 Swissky 10 2 August 2017
pas_valide File upload - ZIP 3% 10041 30 ghozt 3 3 August 2017
pas_valide PHP - Command injection 19% 69254 10 sambecks 10 20 September 2017
pas_valide Command injection - Filter bypass 3% 7980 30 sambecks 6 20 September 2017
pas_valide PHP - Loose Comparison 3% 7557 30 ghozt 4 10 January 2018
pas_valide Server Side Request Forgery 1% 2002 50 sambecks 7 22 June 2018
pas_valide HTTP - POST 14% 51358 15 Th1b4ud 10 14 August 2018
pas_valide PHP - Eval 2% 3803 40 chmod 10 8 November 2018
pas_valide JWT - Public key 2% 4134 30 Jrmbt 5 21 August 2019
pas_valide JWT - Weak secret 4% 12727 25 Jrmbt 7 21 August 2019
pas_valide JWT - Introduction 5% 18307 20 Kn0wledge 5 21 August 2019
pas_valide Insecure Code Management 4% 14416 20 Swissky 6 29 September 2019
pas_valide PHP - Remote Xdebug 1% 1578 25 mayfly 4 18 March 2020
pas_valide JWT - Revoked token 2% 6586 25 ArnC 6 20 March 2020
pas_valide PHP - Unserialize overflow 1% 819 55 mayfly 2 4 April 2020
pas_valide GraphQL - Mutation 1% 1656 40 CanardMandarin 2 20 October 2020
pas_valide Node - Eval 1% 3144 30 Mhd_Root 7 24 February 2021
pas_valide Node - Serialize 1% 1403 35 Mhd_Root 2 24 February 2021
pas_valide HTTP - IP restriction bypass 9% 31740 10 Cyrhades 8 23 March 2021
pas_valide NodeJS - vm escape 1% 813 50 Podalirius 1 15 April 2021
pas_valide Yaml - Deserialization 1% 1541 35 Nishacid 2 20 April 2021
pas_valide Python - Server-side Template Injection Introduction 2% 5022 25 Podalirius 7 7 September 2021
pas_valide Python - Blind SSTI Filters Bypass 1% 727 75 Podalirius 5 7 September 2021
pas_valide NodeJS - Prototype Pollution Bypass 1% 602 45 Worty 1 22 October 2021
pas_valide PHP - Unserialize Pop Chain 1% 776 55 Worty 2 22 October 2021
pas_valide PHP - Apache configuration 1% 2736 25 erk3 , nemoz 4 8 July 2022
pas_valide PHP - Eval - Advanced filters bypass 1% 674 40 Podalirius 2 8 July 2022
pas_valide File upload - Polyglot 1% 529 45 Cyxo 1 8 July 2022
pas_valide GraphQL - Introspection 2% 4244 20 apges01 4 19 January 2023
pas_valide GraphQL - Injection 1% 932 30 apges01 2 19 January 2023
pas_valide GraphQL - Backend injection 1% 506 40 apges01 1 19 January 2023
pas_valide JWT - Unsecure File Signature 1% 2644 25 Nishacid , Mika 3 23 February 2023
pas_valide JWT - Header Injection 1% 1425 30 Nishacid , Mika 2 23 February 2023
pas_valide JWT - Unsecure Key Handling 1% 944 35 Nishacid , Mika 5 23 February 2023
pas_valide XSS - Server Side 1% 3201 20 Elf 4 23 June 2023
pas_valide SQL Injection - Second Order 1% 267 55 k4ndar3c 1 29 November 2023
pas_valide Flask - Development server 1% 1214 30 Sanlokii 1 29 November 2023
pas_valide Elixir - EEx 1% 386 35 lolo42 1 29 November 2023
pas_valide Flask - Unsecure session 1% 3200 20 Sanlokii 1 29 November 2023
pas_valide Java - Custom gadget deserialization 1% 245 50 Elweth 0 28 December 2023
pas_valide API - Broken Access 2% 5985 15 Nishacid , Mika 4 18 January 2024
pas_valide API - Mass Assignment 1% 3649 20 Nishacid , Mika 2 18 January 2024
pas_valide API - Broken Access 2 1% 639 40 Nishacid , Mika 1 18 January 2024
pas_valide Python - dotenv 1% 125 70 jrjgjk 1 27 September 2024
pas_valide Nginx - SSRF Misconfiguration 1% 372 30 .Yo0x 1 27 September 2024
pas_valide Nginx - Root Location Misconfiguration 1% 1553 15 .Yo0x 1 27 September 2024
pas_valide Nginx - Alias Misconfiguration 1% 3267 15 .Yo0x 3 27 September 2024
pas_valide Ruby on Rails - ransack 1% 47 30 koma 0 23 June 2025

Challenge Results Challenge Results

Pseudo Challenge Lang Date
vancyyuu Web - Server  HTML - Source code en 27 July 2025 at 12:18
DryDemon Web - Serveur  File upload - ZIP fr 27 July 2025 at 12:16
Syrym Nurbaturov Web - Server  XSS - Server Side en 27 July 2025 at 12:15
gidfoxe Web - Serveur  JWT - Jeton révoqué fr 27 July 2025 at 12:13
elicopter770 Web - Server  HTTP - Open redirect en 27 July 2025 at 12:11
RandomGuy Web - Serveur  API - Broken Access fr 27 July 2025 at 12:10
natch Web - Serveur  API - Mass Assignment fr 27 July 2025 at 12:08
Syrym Nurbaturov Web - Server  Flask - Unsecure session en 27 July 2025 at 12:04
elicopter770 Web - Server  HTTP - IP restriction bypass en 27 July 2025 at 12:04
bragdon Web - Server  Java - Server-side Template Injection en 27 July 2025 at 12:02