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I need a way to hide zip files in a file .

Example i have a 1.zip , 2.zip ,3.zip contain data

I need to concatenates them in a new file called example.jpg.

Is there a way ?

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closed as unclear what you're asking by Braiam, guntbert, mikewhatever, Warren Hill, BuZZ-dEE Jan 30 at 12:24

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2 Answers 2

Hiding secret information in images is a topic of steganography. Some linux tools which deal with hiding information in images:

  • steghide (sudo apt-get install steghide)
  • stepic (sudo apt-get install python-stepic)
  • outguess(sudo apt-get install outguess)

Using steghide:

Steghide supports BMP and JPG images. To embed a secret.zip file in a cover.jpg and make a new file for the embedded jpg use

steghide --embed -ef secret.zip -cf cover.jpg -sf embedded.jpg

steghide will prompt for a password, type in one, this will be needed to recover the secret. After this you can view embedded.jpg just like a normal picture, you won't really notice that it is manipulated.

To recover the secret run

steghide --extract -sf embedded.jpg 

Type in the password and your secret will be recovered with its original name, secret.zip.

An important thing to know that an image can only contain a certain amount of secret data, since putting a lot of data into the image would need too much manipulations on the image and the image will be no more like the original. To view how much secret data can steghide embed in a certain image, run:

steghide --info cover.jpg

For other features of steghide look in man steghide.


With python-stepic you use these commands:

  • for embedding:

    stepic --encode -t secret.zip -i cover.png -o embedded.png
    
  • for extracting:

    stepic --decode -i embedded.png -o recovered.zip
    

stepic uses the Python Image Library so it should work with most of the image formats, but png is recommended for the output image format by the authors. For more info on stepic go here.

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up vote 1 down vote accepted

1. Open Terminal

2. Cd to the zips location (example : cd /test ) where i put them there .

  1. type cat 1.zip 2.zip 3.zip > example.jpg

A file example.jpg is created , it seems to be corrupted but in real it contain the 3 zip files with there date .

You can now delete the files (1.zip ,2.zip,3.zip)

To extract them from the example.jpg :

unzip example.jpg -d /destinationyouwant

Hope it helps !

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At first I thought that this wouldn't possibly work, but indeed, it does. unzip seems to process the archinve even if it is in fact multiple archives into a single one. –  hakermania Jan 29 at 1:00
    
sure, but what does the image look like? –  Mateo_ Jan 29 at 1:10
    
you do realize that anyone that ever heard of the "file" command can see through this? –  Rinzwind Jan 29 at 9:49

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