To identify deserialization vulnerabilities, you can follow these approaches depending on the programming language used:
Python-Based Code:
If you have access to the code, look for functions like deserialize and methods involving pickled data. These functions are often indicators of deserialization vulnerabilities.
If you don't have access to the code, look for large blobs of data being transferred. Decode them and check if you can manipulate the data to produce unintended results.
Java-Based Deserialization Vulnerabilities:
For Java-based deserialization vulnerabilities, you can use the ysoserial tool, which is available at https://github.com/frohoff/ysoserial. This tool helps generate payloads for exploiting Java deserialization vulnerabilities.
PHP-Based Gadget Deserialization Vulnerabilities:
For PHP-based gadget deserialization vulnerabilities, you can use the phpggc tool, available at https://github.com/ambionics/phpggc. This tool aids in creating gadget chains for exploiting PHP deserialization vulnerabilities.
Identifying and exploiting deserialization vulnerabilities can have severe security implications. It is essential to responsibly disclose and patch such vulnerabilities to protect the security of the application and its users.