Java - Custom gadget deserialization

50 Points

Hey inspector, will you find the gadget?

Author

Elweth, 28 December 2023

Level

Validations

172 Challengers 1%

Note

28 Votes

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Solution

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Challenge Results

Pseudo	Challenge	Lang	Date
Xadi	Java - Custom gadget deserialization		20 January 2025 at 19:01
Luminary	Java - Custom gadget deserialisation		18 January 2025 at 01:38
Driikolu	Java - Custom gadget deserialisation		17 January 2025 at 14:31
ThatYonko	Java - Custom gadget deserialization		12 January 2025 at 21:14
Light	Java - Custom gadget deserialisation		8 January 2025 at 21:04
eRa	Java - Custom gadget deserialisation		8 January 2025 at 15:54
dryy	Java - Custom gadget deserialisation		8 January 2025 at 15:52
thanhson	Java - Custom gadget deserialization		2 January 2025 at 21:12
mimah	Java - Custom gadget deserialisation		2 January 2025 at 12:10
Godox	Java - Custom gadget deserialisation		31 December 2024 at 15:17

96 Challenges

Results	Name	Validations	Number of points	Difficulty	Author	Note	Solution	Date
	HTML - Source code	48% 169099	5		g0uZ		5	3 October 2006
	HTTP - IP restriction bypass	9% 28808	10		Cyrhades		7	23 March 2021
	HTTP - Open redirect	19% 66442	10		Swissky		10	2 August 2017
	HTTP - User-agent	24% 83539	10		g0uZ		10	3 October 2006
	Weak password	32% 109485	10		g0uZ		7	3 October 2006
	PHP - Command injection	19% 66119	10		sambecks		10	20 September 2017
	API - Broken Access	2% 4316	15		Nishacid , Mika		3	18 January 2024
	Backup file	16% 54033	15		g0uZ		10	27 February 2011
	HTTP - Directory indexing	22% 77052	15		g0uZ		7	7 October 2006
	HTTP - Headers	16% 54380	15		Arod		9	11 January 2015
	HTTP - POST	14% 49238	15		Th1b4ud		10	14 August 2018
	HTTP - Improper redirect	13% 42370	15		Arod		10	26 November 2014
	HTTP - Verb tampering	14% 46121	15		g0uZ		10	3 February 2011
	Install files	13% 43546	15		g0uZ		6	7 October 2006
	Nginx - Alias Misconfiguration	1% 1932	15		.Yo0x		2	27 September 2024
	Nginx - Root Location Misconfiguration	1% 173	15		.Yo0x		0	27 September 2024
	API - Mass Assignment	1% 2759	20		Nishacid , Mika		2	18 January 2024
	CRLF	9% 31705	20		g0uZ		7	31 July 2011
	File upload - Double extensions	10% 34818	20		g0uZ		10	24 December 2012
	File upload - MIME type	8% 27934	20		g0uZ		10	26 December 2012
	Flask - Unsecure session	1% 2553	20		Sanlokii		1	29 November 2023
	GraphQL - Introspection	2% 3686	20		apges01		4	19 January 2023
	HTTP - Cookies	13% 45482	20		g0uZ		8	7 October 2006
	Insecure Code Management	4% 13703	20		Swissky		6	29 September 2019
	JWT - Introduction	5% 17221	20		Kn0wledge		5	21 August 2019
	XSS - Server Side	1% 2672	20		Elf		4	23 June 2023
	Directory traversal	10% 35169	25		g0uZ		3	31 July 2011
	File upload - Null byte	7% 23846	25		g0uZ		4	26 December 2012
	JWT - Revoked token	2% 6061	25		ArnC		6	20 March 2020
	JWT - Weak secret	4% 11946	25		Jrmbt		6	21 August 2019
	JWT - Unsecure File Signature	1% 2182	25		Nishacid , Mika		3	23 February 2023
	PHP - assert()	5% 15441	25		Birdy42		10	26 November 2016
	PHP - Apache configuration	1% 2398	25		erk3 , nemoz		4	8 July 2022
	PHP - Filters	6% 19665	25		g0uZ		3	27 February 2011
	PHP - register globals	5% 15838	25		g0uZ		2	8 October 2011
	PHP - Remote Xdebug	1% 1495	25		mayfly		4	18 March 2020
	Python - Server-side Template Injection Introduction	2% 4512	25		Podalirius		7	7 September 2021
	File upload - ZIP	3% 9572	30		ghozt		3	3 August 2017
	Flask - Development server	1% 940	30		Sanlokii		1	29 November 2023
	GraphQL - Injection	1% 770	30		apges01		2	19 January 2023
	Command injection - Filter bypass	3% 7644	30		sambecks		6	20 September 2017
	Java - Server-side Template Injection	4% 10636	30		righettod		6	29 November 2015
	JWT - Public key	2% 3853	30		Jrmbt		5	21 August 2019
	JWT - Header Injection	1% 1184	30		Nishacid , Mika		2	23 February 2023
	Local File Inclusion	8% 25530	30		g0uZ		4	2 October 2011
	Local File Inclusion - Double encoding	4% 12846	30		zM_		4	13 June 2016
	Nginx - SSRF Misconfiguration	1% 66	30		.Yo0x		0	27 September 2024
	Node - Eval	1% 2946	30		Mhd_Root		7	24 February 2021
	PHP - Loose Comparison	3% 7277	30		ghozt		4	10 January 2018
	PHP - preg_replace()	3% 9063	30		sambecks		4	2 March 2016
	PHP - type juggling	3% 8861	30		vic		4	10 March 2016
	Remote File Inclusion	4% 11798	30		g0uZ		8	25 November 2015
	SQL injection - Authentication	14% 45849	30		g0uZ		11	27 February 2011
	SQL injection - Authentication - GBK	3% 9805	30		dvor4x		4	2 December 2015
	SQL injection - String	7% 21880	30		g0uZ		10	24 December 2012
	XSLT - Code execution	2% 3728	30		ghozt		5	16 July 2017
	Elixir - EEx	1% 269	35		lolo42		1	29 November 2023
	JWT - Unsecure Key Handling	1% 770	35		Nishacid , Mika		5	23 February 2023
	LDAP injection - Authentication	3% 10368	35		g0uZ		8	26 May 2013
	Node - Serialize	1% 1283	35		Mhd_Root		2	24 February 2021
	NoSQL injection - Authentication	3% 7690	35		mastho		8	31 May 2015
	PHP - Path Truncation	2% 5449	35		Geluchat		6	25 March 2015
	PHP - Serialization	2% 6749	35		Arod		3	3 February 2014
	SQL injection - Numeric	5% 15094	35		g0uZ		7	24 December 2012
	SQL Injection - Routed	2% 5414	35		soka		5	24 December 2016
	SQL Truncation	2% 6773	35		Geluchat		2	1 May 2015
	XML External Entity	2% 5651	35		sambecks		2	20 October 2014
	XPath injection - Authentication	2% 6611	35		g0uZ		6	27 December 2012
	Yaml - Deserialization	1% 1407	35		Nishacid		2	20 April 2021
	API - Broken Access 2	1% 444	40		Nishacid , Mika		1	18 January 2024
	GraphQL - Backend injection	1% 434	40		apges01		1	19 January 2023
	GraphQL - Mutation	1% 1579	40		CanardMandarin		2	20 October 2020
	Java - Spring Boot	1% 2341	40		dvor4x		3	24 December 2016
	Local File Inclusion - Wrappers	2% 3644	40		sambecks		4	2 March 2016
	PHP - Eval	2% 3639	40		chmod		10	8 November 2018
	PHP - Eval - Advanced filters bypass	1% 601	40		Podalirius		2	8 July 2022
	SQL injection - Error	3% 7872	40		sambecks		5	4 March 2015
	SQL injection - Insert	1% 3195	40		sambecks		4	23 February 2015
	SQL injection - File reading	2% 6024	40		Arod		3	19 October 2014
	XPath injection - String	2% 3928	40		g0uZ		5	26 May 2013
	File upload - Polyglot	1% 458	45		Cyxo		1	8 July 2022
	NodeJS - Prototype Pollution Bypass	1% 538	45		Worty		1	22 October 2021
	NoSQL injection - Blind	1% 3027	45		ghozt		6	26 November 2016
	SQL injection - Time based	2% 5808	45		ycam		4	11 September 2015
	Java - Custom gadget deserialization	1% 172	50		Elweth		0	28 December 2023
	NodeJS - vm escape	1% 754	50		Podalirius		1	15 April 2021
	Server Side Request Forgery	1% 1908	50		sambecks		7	22 June 2018
	SQL injection - Blind	3% 7687	50		g0uZ		6	27 February 2011
	LDAP injection - Blind	1% 3468	55		g0uZ		2	8 June 2013
	PHP - Unserialize overflow	1% 782	55		mayfly		2	4 April 2020
	PHP - Unserialize Pop Chain	1% 693	55		Worty		2	22 October 2021
	SQL Injection - Second Order	1% 211	55		k4ndar3c		1	29 November 2023
	Python - dotenv	1% 25	70		jrjgjk		0	27 September 2024
	Python - Blind SSTI Filters Bypass	1% 666	75		Podalirius		5	7 September 2021
	XPath injection - Blind	1% 2345	75		g0uZ		5	27 December 2012
	SQL injection - Filter bypass	1% 2897	80		sambecks		7	21 July 2014