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Hackerhubb.blogspot.com

Posted by Frames on 3:53 PM
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Hackerhubb.blogspot.com

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Introduction To Reversing Golang Binaries

Posted by Frames on 7:25 AM
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Golang binaries are a bit hard to analyze but there are some tricks to locate the things and view what is doing the code.






Is possible to list all the go files compiled in the binary even in an striped binaries, in this case we have only one file gohello.go this is a good clue to guess what is doing the program.


On stripped binaries the runtime functions are not resolved so is more difficult to locate the user algorithms:


If we start from the entry point, we will found this mess:

The golang string initialization are encoded and is not displayed on the strings window.


How to locate main?  if its not stripped just bp on [package name].main for example bp main.main, (you can locate the package-name searching strings with ".main")


And here is our main.main:


The code is:

So in a stripped binary we cant find the string "hello world" neither the initialization 0x1337 nor the comparator 0x1337, all this is obfuscated.

The initialization sequence is:


The procedure for locating main.main in stripped binaries is:
1. Click on the entry point and locate the runtime.mainPC pointer:



2. click on runtime.main function (LAB_0042B030):


3. locate the main.main call after the zero ifs:



4. click on it and here is the main:




The runtime is not obvious for example the fmt.Scanf() call perform several internal calls until reach the syscall, and in a stripped binary there are no function names.



In order to identify the functions one option is compile another binary with symbols and make function fingerprinting.

In Ghidra we have the script golang_renamer.py which is very useful:


After applying this plugin the main looks like more clear:




This script is an example of function fingerprinting, in this case all the opcodes are included on the crc hashing:
# This script fingerprints the functions
#@author: sha0coder
#@category fingerprinting

print "Fingerprinting..."

import zlib


# loop through program functions
function = getFirstFunction()
while function is not None:
name = str(function.getName())
entry = function.getEntryPoint()
body = function.getBody()
addresses = body.getAddresses(True)

if not addresses.hasNext():
# empty function
continue

ins = getInstructionAt(body.getMinAddress())
opcodes = ''
while ins and ins.getMinAddress() <= body.getMaxAddress():
for b in ins.bytes:
opcodes += chr(b & 0xff)
ins = getInstructionAfter(ins)
crchash = zlib.crc32(opcodes) & 0xffffffff

print name, hex(crchash)


function = getFunctionAfter(function)





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Top 5 Best TV Series Based On Hacking & Technology 2018

Posted by Frames on 10:32 PM
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Best TV Series Based On Hacking & Technology 2018

Top 5 Best TV Series Based On Hacking & Technology 2018

Top 5 Best TV Series Based On Hacking And Technology 2018

Well, if you are a tech fanatic then you will love watching TV shows which are based on hacking and technology. If you are a tech geek, then you will know that hacking stuff in movies/serials always generates glamor and mystery and adds that special oomph factor to the movie or Tv SHOW.
However, there are not much movies/ or TV serials made on hacking and technology. Technology is rapidly becoming the key point in human lives. The previous year we have seen how hackers had made their marks on giant companies. So, in this article, we are going to discuss top TV shows which have to hack as the central theme. So, have a look at the list.

#1 Mr. Robot

Mr. Robot: Best TV Series Based On Hacking & Technology 2018
Mr. Robot: Best TV Series Based On Hacking & Technology 2018
Well, the reason why I listed Mr. Robot on the top is because this show has millions of followers and this is the first show that portrays an elite hacker. The elite hacker group uses computers, smartphones and many other technologies to penetrate secure network to take down evil corporation while being anonymous. The show displays the life of a young programmer named Elliot who works as a cyber-security engineer and a vigilante hacker by night.

#2 Silicon Valley

Silicon Valley
Silicon Valley
This TV series displays the tech and hacking with a bit of comic touch. The series shows the competition between techies in the high-tech gold rush of modern Silicon Valley. What's more interesting is the people who are more qualified are least successful whereas underdogs are making it big. This show is running successfully for three years now.

#3 The IT Crowd

The IT Crowd
The IT Crowd
The IT Crowd is very popular series and is running successfully for eight years from 2006 to 2013. It is not like Mr.Robot it has its moments of hacks. The series shows the comedic adventures of a rag-tag group of technical support workers at a large corporation.

#4 Person Of Interest

Person Of Interest
Person Of Interest
It is one of the best TV series made till now. You will get to see the humor, twists, and lots of other things. In this show and intelligent programmer built and AI (Artificial intelligence) that helps to stop the crimes in the city. The show will definitely give you chills.

#5 Chuck

Chuck: Best TV Series Based On Hacking & Technology 2018
Chuck: Best TV Series Based On Hacking & Technology 2018
The TV series was somehow popular and ran from 2007 to 2013. The show shows the character of a young hacker and nerd who accidentally downloads US Govt, secrets into his brain and there is where the story starts CIA and NSA agents protect him and at the same time exploit him.

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