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 Javascript - Authentication 46% 168567 5 g0uZ 9 8 October 2006
pas_valide HTML - disabled buttons 44% 160494 5 Final 10 16 July 2017
pas_valide Javascript - Source 44% 159401 5 g0uZ 5 7 October 2006
pas_valide Javascript - Authentication 2 41% 147200 10 na5sim 4 3 February 2011
pas_valide Javascript - Obfuscation 1 38% 139421 10 Hel0ck 10 7 October 2006
pas_valide Javascript - Obfuscation 2 33% 120645 10 Hel0ck 8 3 February 2011
pas_valide Javascript - Native code 25% 89355 15 g0uZ 8 13 March 2011
pas_valide Javascript - Obfuscation 3 18% 65813 30 Hel0ck 10 4 February 2011
pas_valide XSS - Stored 1 12% 42369 30 g0uZ 10 3 March 2012
pas_valide Javascript - Webpack 8% 28529 15 CanardMandarin 3 11 August 2020
pas_valide CSRF - 0 protection 6% 21469 35 sambecks 8 16 February 2016
pas_valide XSS - Stored 2 3% 9822 50 g0uZ 7 4 March 2012
pas_valide CSRF - token bypass 3% 7635 45 sambecks 8 18 February 2016
pas_valide Javascript - Obfuscation 4 2% 7103 50 aaSSfxxx 5 18 July 2011
pas_valide XSS - Reflected 2% 6674 45 pickle 6 16 March 2018
pas_valide Flash - Authentication 2% 6544 40 koma 1 18 June 2012
pas_valide XSS DOM Based - Introduction 2% 6513 35 Ruulian 4 12 August 2021
pas_valide CSP Bypass - Inline code 2% 6071 35 CanardMandarin 8 27 October 2020
pas_valide XSS DOM Based - Eval 1% 3179 40 Ruulian 5 12 August 2021
pas_valide XSS DOM Based - AngularJS 1% 2846 40 Ruulian 3 12 August 2021
pas_valide HTTP Response Splitting 1% 2495 70 Arod 3 7 November 2013
pas_valide AST - Deobfuscation 1% 2233 35 mhoste , Lxt3h 2 27 June 2023
pas_valide CSP Bypass - Dangling markup 1% 1892 45 CanardMandarin 1 27 October 2020
pas_valide XSS DOM Based - Filters Bypass 1% 1639 50 Ruulian 7 12 August 2021
pas_valide XSS - Stored - filter bypass 1% 1599 80 Arod , sambecks 8 2 January 2016
pas_valide CSP Bypass - Dangling markup 2 1% 1557 50 CanardMandarin 1 27 October 2020
pas_valide CSP Bypass - JSONP 1% 1509 45 CanardMandarin 5 27 October 2020
pas_valide CSP Bypass - Nonce 1% 1151 50 Ruulian 4 8 April 2022
pas_valide Web Socket - 0 protection 1% 966 35 Worty 1 22 October 2021
pas_valide XSS - DOM Based 1% 885 85 vic 6 24 December 2016
pas_valide Javascript - Obfuscation 5 1% 823 70 Hel0ck 3 4 February 2011
pas_valide CSS - Exfiltration 1% 699 50 Forgi , gwel 1 8 April 2022
pas_valide CSP Bypass - Nonce 2 1% 669 35 Ruulian 1 27 June 2023
pas_valide DOM Clobbering 1% 438 60 Mizu 1 8 April 2022
pas_valide Self XSS - DOM Secrets 1% 272 55 Mizu 3 28 July 2023
pas_valide XS Leaks 1% 209 75 Mizu 1 8 April 2022
pas_valide Relative Path Overwrite 1% 208 50 Mizu 2 28 July 2023
pas_valide Javascript - Obfuscation 6 1% 129 60 n3rada 0 27 April 2023
pas_valide Self XSS - Race Condition 1% 111 60 Mizu 1 28 July 2023
pas_valide Browser - bfcache / disk cache 1% 76 65 Mizu 0 28 July 2023
pas_valide CSPT - The Ruler 1% 75 60 Rolix , Mizu 0 27 September 2024
pas_valide Same Origin Method Execution 1% 51 90 Mizu 0 28 July 2023

Challenge Results Challenge Results

Pseudo Challenge Lang Date
Gekko Web - Client  XSS - Stored 1 en 26 July 2025 at 08:32
WhaleVic Web - Client  Javascript - Obfuscation 1 fr 26 July 2025 at 08:04
Mr Robot Web - Client  HTML - boutons désactivés fr 26 July 2025 at 07:25
fahdmo Web - Client  CSRF - 0 protection en 26 July 2025 at 05:58
cryxa.official Web - Client  Javascript - Obfuscation 1 fr 26 July 2025 at 04:36
NoobMaster_69 Web - Client  Javascript - Native code en 26 July 2025 at 04:23
cryxa.official Web - Client  Javascript - Authentification 2 fr 26 July 2025 at 04:21
cryxa.official Web - Client  Javascript - Source fr 26 July 2025 at 04:15
cryxa.official Web - Client  Javascript - Authentification fr 26 July 2025 at 03:49
cryxa.official Web - Client  HTML - boutons désactivés fr 26 July 2025 at 03:46