A report from data recorded by Wireshark can be saved in separate XML format for further review. This is not much of conversion but more of reporting function in the program. No other way how to reproduce this workaround.
Convert Sun SNOOP capture file format to XML document.
We found one software available in the database for this conversion.
Microsoft Windows software - convert snoop to xml on Windows
A multiplatform network protocol analyzer
Convert from snoop file format
The table with program actions contains information about what each program is capable of doing with their files. This may be a good pointer for further searches for certain file conversions and help you find the converter you are looking for if our search result is insufficient for you. However, it is far from perfect and may sometimes show results which are not really usable because of the nature of the software handles the files. So a conversion that appears as possible, just because of matched actions, may in fact not be possible.