Bandit Level 12 → Level 13

Lets see what is inside that data.txt file:

ls

cat data.txt

It is HexDump data, we can convert it to its original shape with a tool called xxd, but before that we will create a new directory in the tmp directory, and copy that data.txt file to it:

mkdir /tmp/Caesar3

cd /tmp/Caesar3

cp ~/data.txt .

xxd -r data.txt

• -r: Revert hexdump to binary.

We redirect the output to a file, and check the type of that file:

xxd -r data.txt > file

file file

As we can see it is compressed with gzip, lets change the file extension to gz and decompress it, then check the file type of that file:

mv file file.gz

gzip -d file.gz

• -d: Decompress.

ls

file file

It is compressed with bzip2, lets change the file extension to bz2, and decompress it and check its type:

mv file file.bz2

bzip2 -d file.bz2

• -d: Decompress.

ls

file file

Its again compressed with gzip, lets redo what we did above:

Now its tar archive, we can just do:

tar -xvf file

• x: Extract.

• v: Verbose.

• f: File Name.

file data5.bin

It is another tar file, so redo the previous process:

Bzip2 again:

Another tar:

Gzip:

Finally text file, lets read it:

cat file

Here is the password for the next user.