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Hacking with Environment Variables Interesting environment variables to supply to scripting language interpreters Introduction On a recent project we gained the ability to specify environment variables but not the process that was executed. We were also unable to control the contents of a file on disk, and bruteforcing process identifiers (PIDs) and file descriptors found no interesting results, e
Ruby 2.x Universal RCE Deserialization Gadget Chain A universal gadget chain to achieve arbitrary code execution in Ruby 2.x Introduction This blog post details exploitation of arbitrary deserialization for the Ruby programming language and releases the first public universal gadget chain to achieve arbitrary command execution for Ruby 2.x. This will be described in the following sections which de
Intro to SDR and RF Signal Analysis Visual analysis of signal characteristics using software-defined radio Introduction The increasing popularity of Internet of Things (IoT) and other devices becoming wireless is very much apparent in today’s society. With availability of modern Software Defined Radio (SDR) hardware, it has become more accessible, cheaper, and easier than ever to examine the Radio
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