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% 160845	5		Final		10	16 July 2017
	Javascript - Source	44% 159680	5		g0uZ		5	7 October 2006
	Javascript - Authentication 2	41% 147458	10		na5sim		4	3 February 2011
	Javascript - Obfuscation 1	38% 139670	10		Hel0ck		10	7 October 2006
	Javascript - Obfuscation 2	33% 120877	10		Hel0ck		8	3 February 2011
	Javascript - Authentication	46% 168869	5		g0uZ		9	8 October 2006
	Javascript - Native code	25% 89511	15		g0uZ		8	13 March 2011
	Javascript - Webpack	8% 28622	15		CanardMandarin		3	11 August 2020
	XSS DOM Based - Eval	1% 3208	40		Ruulian		5	12 August 2021
	XSS DOM Based - Filters Bypass	1% 1651	50		Ruulian		7	12 August 2021
	XSS - Stored 2	3% 9846	50		g0uZ		7	4 March 2012
	Javascript - Obfuscation 4	2% 7120	50		aaSSfxxx		5	18 July 2011
	CSP Bypass - Dangling markup 2	1% 1567	50		CanardMandarin		1	27 October 2020
	XSS - Reflected	2% 6697	45		pickle		6	16 March 2018
	CSP Bypass - JSONP	1% 1516	45		CanardMandarin		6	27 October 2020
	CSP Bypass - Dangling markup	1% 1905	45		CanardMandarin		1	27 October 2020
	CSRF - token bypass	3% 7658	45		sambecks		8	18 February 2016
	XSS DOM Based - AngularJS	1% 2866	40		Ruulian		3	12 August 2021
	CSP Bypass - Inline code	2% 6099	35		CanardMandarin		8	27 October 2020
	Flash - Authentication	2% 6552	40		koma		1	18 June 2012
	XSS - Stored 1	12% 42458	30		g0uZ		10	3 March 2012
	AST - Deobfuscation	1% 2271	35		mhoste , Lxt3h		2	27 June 2023
	Javascript - Obfuscation 3	18% 65914	30		Hel0ck		10	4 February 2011
	CSP Bypass - Nonce 2	1% 679	35		Ruulian		1	27 June 2023
	CSRF - 0 protection	6% 21532	35		sambecks		8	16 February 2016
	Web Socket - 0 protection	1% 973	35		Worty		1	22 October 2021
	XSS DOM Based - Introduction	2% 6559	35		Ruulian		4	12 August 2021
	Browser - bfcache / disk cache	1% 77	65		Mizu		0	28 July 2023
	XSS - DOM Based	1% 885	85		vic		6	24 December 2016
	XSS - Stored - filter bypass	1% 1604	80		Arod , sambecks		8	2 January 2016
	XS Leaks	1% 212	75		Mizu		1	8 April 2022
	Javascript - Obfuscation 5	1% 823	70		Hel0ck		3	4 February 2011
	HTTP Response Splitting	1% 2499	70		Arod		3	7 November 2013
	DOM Clobbering	1% 445	60		Mizu		1	8 April 2022
	Self XSS - Race Condition	1% 111	60		Mizu		1	28 July 2023
	Javascript - Obfuscation 6	1% 129	60		n3rada		0	27 April 2023
	CSP Bypass - Nonce	1% 1157	50		Ruulian		4	8 April 2022
	CSPT - The Ruler	1% 78	60		Rolix , Mizu		0	27 September 2024
	Self XSS - DOM Secrets	1% 278	55		Mizu		3	28 July 2023
	Relative Path Overwrite	1% 215	50		Mizu		2	28 July 2023
	CSS - Exfiltration	1% 705	50		Forgi , gwel		1	8 April 2022
	Same Origin Method Execution	1% 53	90		Mizu		0	28 July 2023

Challenge Results

Pseudo	Challenge	Lang	Date
0sec	HTML - boutons désactivés		1 August 2025 at 10:37
sam.fgdn	Javascript - Authentification		1 August 2025 at 10:36
sam.fgdn	HTML - boutons désactivés		1 August 2025 at 10:27
R0ots	HTML - boutons désactivés		1 August 2025 at 10:18
ad1tt0	Javascript - Authentication		1 August 2025 at 10:01
ad1tt0	HTML - disabled buttons		1 August 2025 at 09:59
gailin	XSS - Stockée 1		1 August 2025 at 09:55
Jitaksh	XSS DOM Based - Introduction		1 August 2025 at 09:53
hacking ninja	HTML - disabled buttons		1 August 2025 at 08:54
dtarroz	CSP Bypass - JSONP		1 August 2025 at 08:17