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

42 Challenges

Results	Name	Validations ↓↑	Number of points	Difficulty	Author	Note	Solution	Date
	Javascript - Authentication	46% 165798	5		g0uZ		9	8 October 2006
	HTML - disabled buttons	44% 157445	5		Final		10	16 July 2017
	Javascript - Source	44% 156843	5		g0uZ		5	7 October 2006
	Javascript - Authentication 2	41% 144772	10		na5sim		4	3 February 2011
	Javascript - Obfuscation 1	39% 137164	10		Hel0ck		10	7 October 2006
	Javascript - Obfuscation 2	33% 118602	10		Hel0ck		8	3 February 2011
	Javascript - Native code	25% 87918	15		g0uZ		8	13 March 2011
	Javascript - Obfuscation 3	18% 64783	30		Hel0ck		10	4 February 2011
	XSS - Stored 1	12% 41430	30		g0uZ		10	3 March 2012
	Javascript - Webpack	8% 27667	15		CanardMandarin		3	11 August 2020
	CSRF - 0 protection	6% 21051	35		sambecks		8	16 February 2016
	XSS - Stored 2	3% 9599	50		g0uZ		7	4 March 2012
	CSRF - token bypass	3% 7497	45		sambecks		8	18 February 2016
	Javascript - Obfuscation 4	2% 6961	50		aaSSfxxx		5	18 July 2011
	XSS - Reflected	2% 6487	45		pickle		6	16 March 2018
	Flash - Authentication	2% 6449	40		koma		1	18 June 2012
	XSS DOM Based - Introduction	2% 6207	35		Ruulian		4	12 August 2021
	CSP Bypass - Inline code	2% 5821	35		CanardMandarin		8	27 October 2020
	XSS DOM Based - Eval	1% 2994	40		Ruulian		5	12 August 2021
	XSS DOM Based - AngularJS	1% 2679	40		Ruulian		3	12 August 2021
	HTTP Response Splitting	1% 2445	70		Arod		3	7 November 2013
	AST - Deobfuscation	1% 1890	35		mhoste , Lxt3h		2	27 June 2023
	CSP Bypass - Dangling markup	1% 1805	45		CanardMandarin		1	27 October 2020
	XSS - Stored - filter bypass	1% 1559	80		Arod , sambecks		8	2 January 2016
	XSS DOM Based - Filters Bypass	1% 1556	50		Ruulian		7	12 August 2021
	CSP Bypass - Dangling markup 2	1% 1494	50		CanardMandarin		1	27 October 2020
	CSP Bypass - JSONP	1% 1457	45		CanardMandarin		5	27 October 2020
	CSP Bypass - Nonce	1% 1072	50		Ruulian		4	8 April 2022
	Web Socket - 0 protection	1% 937	35		Worty		1	22 October 2021
	XSS - DOM Based	1% 865	85		vic		6	24 December 2016
	Javascript - Obfuscation 5	1% 805	70		Hel0ck		3	4 February 2011
	CSS - Exfiltration	1% 666	50		Forgi , gwel		1	8 April 2022
	CSP Bypass - Nonce 2	1% 601	35		Ruulian		1	27 June 2023
	DOM Clobbering	1% 397	60		Mizu		1	8 April 2022
	Self XSS - DOM Secrets	1% 251	55		Mizu		3	28 July 2023
	XS Leaks	1% 196	75		Mizu		1	8 April 2022
	Relative Path Overwrite	1% 178	50		Mizu		1	28 July 2023
	Javascript - Obfuscation 6	1% 116	60		n3rada		0	27 April 2023
	Self XSS - Race Condition	1% 93	60		Mizu		1	28 July 2023
	Browser - bfcache / disk cache	1% 63	65		Mizu		0	28 July 2023
	Same Origin Method Execution	1% 43	90		Mizu		0	28 July 2023
	CSPT - The Ruler	1% 39	60		Rolix , Mizu		0	27 September 2024

Challenge Results

Pseudo	Challenge	Lang	Date
khiem thomas	Javascript - Obfuscation 3		27 April 2025 at 19:10
Youtmax	Javascript - Obfuscation 1		27 April 2025 at 19:10
Youtmax	Javascript - Authentification 2		27 April 2025 at 19:09
Tuobed	XSS - Stored 1		27 April 2025 at 19:08
Youtmax	Javascript - Source		27 April 2025 at 19:07
Youtmax	Javascript - Authentification		27 April 2025 at 19:06
mathys	XSS - Stockée 1		27 April 2025 at 19:05
Barlog	Javascript - Authentification		27 April 2025 at 19:02
khiem thomas	Javascript - Webpack		27 April 2025 at 18:56
Youtmax	HTML - boutons désactivés		27 April 2025 at 18:56