The guide is for a tool known as Weeping Angel, based on one known as EXTENDING, that was referred to in earlier dumps.
The guide provides detailed instructions on how to build an implant on a Linux computer and place it on any Samsung F series TV using an USB stick.
Audio files can be extracted using a USB stick or setting up a Wi-Fi hotspot within range of the TV. It is also possible to listen to audio exfiltration live, using a Live Listen Tool, designed for use on a Windows OS.
The release of the tool came a day after the US hinted that it may be looking at formulating a case to arrest WikiLeaks publisher Julian Assange.
“We’ve seen too many breaches, and hopefully we’ll be able to strike back against those who violate our systems,” Attorney-General Jeff Sessions told CBS News.