Steganography Tools For Beginners
Stenography
Steganography is the technique of hiding secret data within an ordinary, non-secret, file or message in order to avoid detection, the secret data is then extracted at its destination.
Basic Tools
Strings
Strings command comes by default in linux and it is used to return string from a file.
It is mainly used to extract text from binary files. Sometines the password or crucial data is in the file itself and strings command can be easily used to reveal this data.
Example: strings filename
Hexdump & Hexedit
These are hexeditors which can be used to analyse and edit binary files.
Another useful hexeditor is bliss<
Exiftool
Exiftool is used to show the metadata of a file.
This tool may or maynote be there by default depending on which distro you use.
Example: exif-tool filename
StegHide
This tool is used to hide files and data in JPEG, BMP, WAV and AU files and it can also extract this data form these files.
Example: steghide extract -sf filename
It has many more options which you can look up by reading the man page.
Binwalk
Binwalk is a tool for searching other embedded files present in the target file.
Example: binwalk filename
Read its man page for more options/flags.
Additional Tools
Stegsolve
Stegsolve is a small java tool which is used for appliying colour filters on images and viewing images in diffrent color planes also sometines shift planes.
Source can be found here
Sonic-Visualiser
Soncic visulazier is a tool for analyizing audio files and can also reveal hidden messages in audio files
Source can be found here
Zsteg
This tool can detect hidden data in png, bmp files.
Source can be found here
Stegdetect
Stegdetect is an automated tool for detecting hidden content in images
Source can be found here
Stegoveritas
Yet another automated stegonaography tool.
Source can be found here
Bruteforcers
Stegcracker
Stegonography utility to uncover hidden data inside files by bruteforcing passwords using steghide
Source can be found here
fcrackzip
A bruteforcing tool to crack password protected zip files
man page here
Online Tools
Its a website which has many decoders for lots of cyphers. This is a very useful site while solving stegonography challenges with lots of encoded text.
It is similar to decode.fr but has a nice gui and features.
CTF Sites for practice
These were some basic tools which are used to solve steganography problems.
As a bonus you can also check out black-arch repository for more tools.
