Working with base64

Published: 2015-07-05
Last Updated: 2015-07-05 14:57:31 UTC
by Didier Stevens (Version: 1)
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Last week I received another malicious document with embedded payload encoded with base64. A bit tired of repeating the same manual operations to extract and decode base64 content, I quickly wrote a small Python script to help me. searches through the given file for base64 strings (delimited by non-base64 characters), and produce a report like this one:

Here is a video of the tool in action.

Didier Stevens
Microsoft MVP Consumer Security

Keywords: base64
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