Research Academy
My account Customers About Blog Careers Legal Contact Resellers
The Burp Suite User Forum was discontinued on the 1st November 2024.

Burp Suite User Forum

For support requests, go to the Support Center. To discuss with other Burp users, head to our Discord page.

SUPPORT CENTER DISCORD

helpers indexOf doesn't seem to be working as expected.

Alan | Last updated: May 12, 2022 08:18PM UTC

I'm working with https://github.com/PortSwigger/java-deserializer I have a stream of bytes in a request that should be a serialized java object. Line 145 in JDUtils.java (https://github.com/PortSwigger/java-deserializer/blob/b6f04746206a692883d9418403a2f374f6697c28/src/burp/JDUtils.java#L145) is the following: return helpers.indexOf(content, JDUtils.serializeMagic, false, 0, content.length) > -1; Dumping the byte array thats passed in as the content argument, I clearly see the serializeMagic bytes right after the headers: 13, 10, 13, 10, -84, -19 (cr,nl,cr,nl, serialized object begins). However, the call to indexOf returns -1, not an offset to -84 as expected. What am I missing here ? Thanks in advance!

Michelle, PortSwigger Agent | Last updated: May 17, 2022 08:28AM UTC