Web - Client Web - Client

Client-side technologies implemented in the web browser

At first you will be faced with problems that will require little to no knowledge of web scripting language. Pretty soon the plot thickens ...

These challenges confront you to the use of scripting languages and client-side programming. They are mostly scripts to analyze and understand. This will allow you to learn languages which are in widespread use on the internet.

Prerequisites:
– Understanding a scripting language such javascript/vbscript
– Understanding the operation of a debugger such firebug/javascript console

challenges 42 Challenges

Results Name Validations Number of points  Explanation for the scores Difficulty ↓↑  Difficulty Author Note  Notation Solution Date
pas_valide HTML - disabled buttons 44% 160935 5 Final 10 16 July 2017
pas_valide Javascript - Source 44% 159758 5 g0uZ 5 7 October 2006
pas_valide Javascript - Authentication 2 41% 147529 10 na5sim 4 3 February 2011
pas_valide Javascript - Obfuscation 1 38% 139734 10 Hel0ck 10 7 October 2006
pas_valide Javascript - Obfuscation 2 33% 120938 10 Hel0ck 8 3 February 2011
pas_valide Javascript - Authentication 46% 168956 5 g0uZ 9 8 October 2006
pas_valide Javascript - Native code 25% 89562 15 g0uZ 8 13 March 2011
pas_valide Javascript - Webpack 8% 28648 15 CanardMandarin 3 11 August 2020
pas_valide XSS DOM Based - Eval 1% 3209 40 Ruulian 5 12 August 2021
pas_valide XSS DOM Based - Filters Bypass 1% 1651 50 Ruulian 7 12 August 2021
pas_valide XSS - Stored 2 3% 9852 50 g0uZ 7 4 March 2012
pas_valide Javascript - Obfuscation 4 2% 7123 50 aaSSfxxx 5 18 July 2011
pas_valide CSP Bypass - Dangling markup 2 1% 1568 50 CanardMandarin 1 27 October 2020
pas_valide XSS - Reflected 2% 6705 45 pickle 6 16 March 2018
pas_valide CSP Bypass - JSONP 1% 1517 45 CanardMandarin 6 27 October 2020
pas_valide CSP Bypass - Dangling markup 1% 1905 45 CanardMandarin 1 27 October 2020
pas_valide CSRF - token bypass 3% 7661 45 sambecks 8 18 February 2016
pas_valide XSS DOM Based - AngularJS 1% 2867 40 Ruulian 3 12 August 2021
pas_valide CSP Bypass - Inline code 2% 6108 35 CanardMandarin 8 27 October 2020
pas_valide Flash - Authentication 2% 6554 40 koma 1 18 June 2012
pas_valide XSS - Stored 1 12% 42486 30 g0uZ 10 3 March 2012
pas_valide AST - Deobfuscation 1% 2284 35 mhoste , Lxt3h 2 27 June 2023
pas_valide Javascript - Obfuscation 3 18% 65946 30 Hel0ck 10 4 February 2011
pas_valide CSP Bypass - Nonce 2 1% 680 35 Ruulian 1 27 June 2023
pas_valide CSRF - 0 protection 6% 21543 35 sambecks 8 16 February 2016
pas_valide Web Socket - 0 protection 1% 973 35 Worty 1 22 October 2021
pas_valide XSS DOM Based - Introduction 2% 6568 35 Ruulian 4 12 August 2021
pas_valide Browser - bfcache / disk cache 1% 77 65 Mizu 0 28 July 2023
pas_valide XSS - DOM Based 1% 885 85 vic 6 24 December 2016
pas_valide XSS - Stored - filter bypass 1% 1605 80 Arod , sambecks 8 2 January 2016
pas_valide XS Leaks 1% 213 75 Mizu 1 8 April 2022
pas_valide Javascript - Obfuscation 5 1% 823 70 Hel0ck 3 4 February 2011
pas_valide HTTP Response Splitting 1% 2500 70 Arod 3 7 November 2013
pas_valide DOM Clobbering 1% 446 60 Mizu 1 8 April 2022
pas_valide Self XSS - Race Condition 1% 112 60 Mizu 1 28 July 2023
pas_valide Javascript - Obfuscation 6 1% 130 60 n3rada 0 27 April 2023
pas_valide CSP Bypass - Nonce 1% 1158 50 Ruulian 4 8 April 2022
pas_valide CSPT - The Ruler 1% 80 60 Rolix , Mizu 0 27 September 2024
pas_valide Self XSS - DOM Secrets 1% 278 55 Mizu 3 28 July 2023
pas_valide Relative Path Overwrite 1% 216 50 Mizu 2 28 July 2023
pas_valide CSS - Exfiltration 1% 707 50 Forgi , gwel 1 8 April 2022
pas_valide Same Origin Method Execution 1% 53 90 Mizu 0 28 July 2023

Challenge Results Challenge Results

Pseudo Challenge Lang Date
technovieux Web - Client  Javascript - Authentification fr 1 August 2025 at 19:59
technovieux Web - Client  HTML - boutons désactivés fr 1 August 2025 at 19:52
Ahmed Web - Client  XSS - Stored 1 en 1 August 2025 at 19:47
SilverOwl Web - Client  Javascript - Obfuscation 3 en 1 August 2025 at 19:45
usernews Web - Client  Javascript - Authentification 2 fr 1 August 2025 at 19:41
usernews Web - Client  Javascript - Authentification fr 1 August 2025 at 19:36
vWhiteStorm3444 Web - Client  Javascript - Obfuscation 3 fr 1 August 2025 at 19:19
SilverOwl Web - Client  Javascript - Native code en 1 August 2025 at 19:17
vWhiteStorm3444 Web - Client  Javascript - Webpack fr 1 August 2025 at 19:15
usagi143 Web - Client  Javascript - Webpack en 1 August 2025 at 19:03