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 AST - Deobfuscation 1% 3141 35 mhoste , Lxt3h 2 27 June 2023
pas_valide Browser - bfcache / disk cache 1% 97 65 Mizu 0 28 July 2023
pas_valide CSP Bypass - Dangling markup 1% 2068 45 CanardMandarin 1 27 October 2020
pas_valide CSP Bypass - Dangling markup 2 1% 1732 50 CanardMandarin 1 27 October 2020
pas_valide CSP Bypass - Inline code 2% 6681 35 CanardMandarin 8 27 October 2020
pas_valide CSP Bypass - JSONP 1% 1640 45 CanardMandarin 6 27 October 2020
pas_valide CSP Bypass - Nonce 1% 1338 50 Ruulian 4 8 April 2022
pas_valide CSP Bypass - Nonce 2 1% 856 35 Ruulian 1 27 June 2023
pas_valide CSPT - The Ruler 1% 134 60 Rolix , Mizu 0 27 September 2024
pas_valide CSRF - 0 protection 6% 22386 35 sambecks 8 16 February 2016
pas_valide CSRF - token bypass 3% 8049 45 sambecks 8 18 February 2016
pas_valide CSS - Exfiltration 1% 792 50 Forgi , gwel 1 8 April 2022
pas_valide DOM Clobbering 1% 498 60 Mizu 1 8 April 2022
pas_valide Flash - Authentication 2% 6717 40 koma 1 18 June 2012
pas_valide HTML - disabled buttons 44% 169293 5 Final 10 16 July 2017
pas_valide HTTP Response Splitting 1% 2567 70 Arod 3 7 November 2013
pas_valide Javascript - Authentication 46% 176192 5 g0uZ 9 8 October 2006
pas_valide Javascript - Authentication 2 40% 154113 10 na5sim 4 3 February 2011
pas_valide Javascript - Native code 25% 93117 15 g0uZ 8 13 March 2011
pas_valide Javascript - Obfuscation 1 38% 145784 10 Hel0ck 10 7 October 2006
pas_valide Javascript - Obfuscation 2 33% 126476 10 Hel0ck 8 3 February 2011
pas_valide Javascript - Obfuscation 3 18% 68530 30 Hel0ck 10 4 February 2011
pas_valide Javascript - Obfuscation 4 2% 7409 50 aaSSfxxx 5 18 July 2011
pas_valide Javascript - Obfuscation 5 1% 870 70 Hel0ck 3 4 February 2011
pas_valide Javascript - Obfuscation 6 1% 165 60 n3rada 0 27 April 2023
pas_valide Javascript - Source 44% 166649 5 g0uZ 5 7 October 2006
pas_valide Javascript - Webpack 8% 30841 15 CanardMandarin 3 11 August 2020
pas_valide Relative Path Overwrite 1% 258 50 Mizu 2 28 July 2023
pas_valide Same Origin Method Execution 1% 74 90 Mizu 0 28 July 2023
pas_valide Self XSS - DOM Secrets 1% 322 55 Mizu 3 28 July 2023
pas_valide Self XSS - Race Condition 1% 152 60 Mizu 1 28 July 2023
pas_valide Web Socket - 0 protection 1% 1050 35 Worty 1 22 October 2021
pas_valide XS Leaks 1% 214 75 Mizu 1 8 April 2022
pas_valide XSS - DOM Based 1% 916 85 vic 6 24 December 2016
pas_valide XSS - Reflected 2% 7217 45 pickle 6 16 March 2018
pas_valide XSS - Stored - filter bypass 1% 1687 80 Arod , sambecks 8 2 January 2016
pas_valide XSS - Stored 1 12% 44608 30 g0uZ 10 3 March 2012
pas_valide XSS - Stored 2 3% 10401 50 g0uZ 7 4 March 2012
pas_valide XSS DOM Based - AngularJS 1% 3181 40 Ruulian 3 12 August 2021
pas_valide XSS DOM Based - Eval 1% 3575 40 Ruulian 6 12 August 2021
pas_valide XSS DOM Based - Filters Bypass 1% 1833 50 Ruulian 7 12 August 2021
pas_valide XSS DOM Based - Introduction 2% 7340 35 Ruulian 4 12 August 2021

Challenge Results Challenge Results

Pseudo Challenge Lang Date
BaradozForbann Web - Client  Javascript - Source fr 12 February 2026 at 23:30
dim_mak Web - Client  Javascript - Authentication en 12 February 2026 at 23:30
BaradozForbann Web - Client  Javascript - Authentification 2 fr 12 February 2026 at 23:29
JoeStone Web - Client  Javascript - Native code fr 12 February 2026 at 23:26
santhoine Web - Client  XSS - Stockée 1 fr 12 February 2026 at 23:20
JoeStone Web - Client  Javascript - Obfuscation 3 fr 12 February 2026 at 23:19
BaradozForbann Web - Client  Javascript - Authentification fr 12 February 2026 at 23:18
BaradozForbann Web - Client  HTML - boutons désactivés fr 12 February 2026 at 23:14
amineh5p3 Web - Client  Javascript - Obfuscation 2 fr 12 February 2026 at 23:12
amineh5p3 Web - Client  Javascript - Obfuscation 1 fr 12 February 2026 at 23:08