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
	HTML - disabled buttons	44% 159216	5		Final		10	16 July 2017
	Javascript - Authentication	46% 167374	5		g0uZ		9	8 October 2006
	Javascript - Source	44% 158323	5		g0uZ		5	7 October 2006
	Javascript - Authentication 2	41% 146175	10		na5sim		4	3 February 2011
	Javascript - Obfuscation 1	38% 138464	10		Hel0ck		10	7 October 2006
	Javascript - Obfuscation 2	33% 119789	10		Hel0ck		8	3 February 2011
	Javascript - Native code	25% 88756	15		g0uZ		8	13 March 2011
	Javascript - Webpack	8% 28138	15		CanardMandarin		3	11 August 2020
	Javascript - Obfuscation 3	18% 65370	30		Hel0ck		10	4 February 2011
	XSS - Stored 1	12% 41970	30		g0uZ		10	3 March 2012
	AST - Deobfuscation	1% 2070	35		mhoste , Lxt3h		2	27 June 2023
	CSP Bypass - Inline code	2% 5956	35		CanardMandarin		8	27 October 2020
	CSP Bypass - Nonce 2	1% 635	35		Ruulian		1	27 June 2023
	CSRF - 0 protection	6% 21300	35		sambecks		8	16 February 2016
	Web Socket - 0 protection	1% 955	35		Worty		1	22 October 2021
	XSS DOM Based - Introduction	2% 6391	35		Ruulian		4	12 August 2021
	Flash - Authentication	2% 6496	40		koma		1	18 June 2012
	XSS DOM Based - AngularJS	1% 2773	40		Ruulian		3	12 August 2021
	XSS DOM Based - Eval	1% 3108	40		Ruulian		5	12 August 2021
	CSP Bypass - Dangling markup	1% 1850	45		CanardMandarin		1	27 October 2020
	CSP Bypass - JSONP	1% 1489	45		CanardMandarin		5	27 October 2020
	CSRF - token bypass	3% 7579	45		sambecks		8	18 February 2016
	XSS - Reflected	2% 6600	45		pickle		6	16 March 2018
	CSP Bypass - Dangling markup 2	1% 1530	50		CanardMandarin		1	27 October 2020
	CSP Bypass - Nonce	1% 1118	50		Ruulian		4	8 April 2022
	CSS - Exfiltration	1% 683	50		Forgi , gwel		1	8 April 2022
	Javascript - Obfuscation 4	2% 7048	50		aaSSfxxx		5	18 July 2011
	Relative Path Overwrite	1% 196	50		Mizu		1	28 July 2023
	XSS - Stored 2	3% 9735	50		g0uZ		7	4 March 2012
	XSS DOM Based - Filters Bypass	1% 1600	50		Ruulian		7	12 August 2021
	Self XSS - DOM Secrets	1% 266	55		Mizu		3	28 July 2023
	CSPT - The Ruler	1% 59	60		Rolix , Mizu		0	27 September 2024
	DOM Clobbering	1% 415	60		Mizu		1	8 April 2022
	Javascript - Obfuscation 6	1% 122	60		n3rada		0	27 April 2023
	Self XSS - Race Condition	1% 104	60		Mizu		1	28 July 2023
	Browser - bfcache / disk cache	1% 66	65		Mizu		0	28 July 2023
	HTTP Response Splitting	1% 2470	70		Arod		3	7 November 2013
	Javascript - Obfuscation 5	1% 811	70		Hel0ck		3	4 February 2011
	XS Leaks	1% 199	75		Mizu		1	8 April 2022
	XSS - Stored - filter bypass	1% 1578	80		Arod , sambecks		8	2 January 2016
	XSS - DOM Based	1% 874	85		vic		6	24 December 2016
	Same Origin Method Execution	1% 46	90		Mizu		0	28 July 2023

Challenge Results

Pseudo	Challenge	Lang	Date
Gabriel	Javascript - Obfuscation 3		15 June 2025 at 14:31
Yassine	XS Leaks		15 June 2025 at 14:20
latetatoto	Javascript - Obfuscation 5		15 June 2025 at 14:09
RGIRARD	Javascript - Obfuscation 3		15 June 2025 at 13:50
Zroch	Javascript - Obfuscation 3		15 June 2025 at 13:40
Zroch	Javascript - Native code		15 June 2025 at 13:34
RGIRARD	Javascript - Native code		15 June 2025 at 13:25
System	XSS DOM Based - AngularJS		15 June 2025 at 13:02
RGIRARD	Javascript - Obfuscation 2		15 June 2025 at 13:01
System	XSS DOM Based - Introduction		15 June 2025 at 12:55