Kali Linux 2018.3 Release - Penetration Testing And Ethical Hacking Linux Distribution

Kali 2018.3 brings the kernel up to version 4.17.0 and while 4.17.0 did not introduce many changes, 4.16.0 had a huge number of additions and improvements including more Spectre and Meltdown fixes, improved power management, and better GPU support.

New Tools and Tool Upgrades

Since our last release, we have added a number of new tools to the repositories, including:

• idb – An iOS research / penetration testing tool
• gdb-peda – Python Exploit Development Assistance for GDB
• datasploit – OSINT Framework to perform various recon techniques
• kerberoast – Kerberos assessment tools

In addition to these new packages, we have also upgraded a number of tools in our repos including aircrack-ng, burpsuite, openvas,wifite, and wpscan.
For the complete list of updates, fixes, and additions, please refer to the Kali Bug Tracker Changelog.

Download Kali Linux 2018.3

If you would like to check out this latest and greatest Kali release, you can find download links for ISOs and Torrents on the Kali Downloads page along with links to the Offensive Security virtual machine and ARM images, which have also been updated to 2018.3. If you already have a Kali installation you're happy with, you can easily upgrade in place as follows.

root@kali:~# apt update && apt -y full-upgrade

If you come across any bugs in Kali, please open a report on our bug tracker. It's more than a little challenging to fix what we don't know about.

Making sure you are up-to-date

To double check your version, first make sure your network repositories is enabled.

root@kali:~# cat</etc/apt/sources.list
deb http://http.kali.org/kali kali-rolling main non-free contrib
EOF
root@kali:~#

Then after running apt -y full-upgrade, you may require a reboot before checking:

root@kali:~# grep VERSION /etc/os-release
VERSION="2018.3"
VERSION_ID="2018.3"
root@kali:~#

Download Kali Linux 2018.3

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Reversing Some C++ Io Operations

In general decompilers are not friendly with c++ let's analyse a simple program to get familiar with it.
Let's implement a simple code that loads a file into a vector and then save the vector with following functions:

• err
• load
• save
• main

Lets identify the typical way in C++ to print to stdout with the operator "<<"

The basic_ostream is initialized writing the word "error" to the cout, and then the operator<< again to add the endl.

The Main function simply calls  "vec = load(filename)"  but the compiler modified it and passed the vector pointer as a parámeter. Then it bulds and prints "loaded  " << size << " users".
And finally saves the vector to /tmp/pwd and print "saved".
Most of the mess is basically the operator "<<" to concat and print values.
Also note that the vectors and strings are automatically deallocated when exit the function.

And here is the code:

Let's take a look to the load function, which iterates the ifs.getline() and push to the vector.
First of all there is a mess on the function definition, __return_storage_ptr is the vector.
the ifstream object ifs is initialized as a basic_ifstream and then operator! checks if it wasn't possible to open the file and in that case calls err()
We see the memset and a loop, getline read a cstr like line from the file, and then is converted to a string before pushing it to the vector. lVar1 is the stack canary value.

In this situations dont obfuscate with the vector pointer vec initialization at the begining, in this case the logic is quite clear.

The function save is a bit more tricky, but it's no more than a vector iteration and ofs writing.
Looping a simple "for (auto s : *vec)" in the decompiler is quite dense, but we can see clearly two write, the second write DAT_0010400b is a "\n"

As we see, save implememtation is quite straightforward.

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