2023年5月27日 星期六

How Do I Get Started With Bug Bounty ?

How do I get started with bug bounty hunting? How do I improve my skills?



These are some simple steps that every bug bounty hunter can use to get started and improve their skills:

Learn to make it; then break it!
A major chunk of the hacker's mindset consists of wanting to learn more. In order to really exploit issues and discover further potential vulnerabilities, hackers are encouraged to learn to build what they are targeting. By doing this, there is a greater likelihood that hacker will understand the component being targeted and where most issues appear. For example, when people ask me how to take over a sub-domain, I make sure they understand the Domain Name System (DNS) first and let them set up their own website to play around attempting to "claim" that domain.

Read books. Lots of books.
One way to get better is by reading fellow hunters' and hackers' write-ups. Follow /r/netsec and Twitter for fantastic write-ups ranging from a variety of security-related topics that will not only motivate you but help you improve. For a list of good books to read, please refer to "What books should I read?".

Join discussions and ask questions.
As you may be aware, the information security community is full of interesting discussions ranging from breaches to surveillance, and further. The bug bounty community consists of hunters, security analysts, and platform staff helping one and another get better at what they do. There are two very popular bug bounty forums: Bug Bounty Forum and Bug Bounty World.

Participate in open source projects; learn to code.
Go to https://github.com/explore or https://gitlab.com/explore/projects and pick a project to contribute to. By doing so you will improve your general coding and communication skills. On top of that, read https://learnpythonthehardway.org/ and https://linuxjourney.com/.

Help others. If you can teach it, you have mastered it.
Once you discover something new and believe others would benefit from learning about your discovery, publish a write-up about it. Not only will you help others, you will learn to really master the topic because you can actually explain it properly.

Smile when you get feedback and use it to your advantage.
The bug bounty community is full of people wanting to help others so do not be surprised if someone gives you some constructive feedback about your work. Learn from your mistakes and in doing so use it to your advantage. I have a little physical notebook where I keep track of the little things that I learnt during the day and the feedback that people gave me.


Learn to approach a target.
The first step when approaching a target is always going to be reconnaissance — preliminary gathering of information about the target. If the target is a web application, start by browsing around like a normal user and get to know the website's purpose. Then you can start enumerating endpoints such as sub-domains, ports and web paths.

A woodsman was once asked, "What would you do if you had just five minutes to chop down a tree?" He answered, "I would spend the first two and a half minutes sharpening my axe."
As you progress, you will start to notice patterns and find yourself refining your hunting methodology. You will probably also start automating a lot of the repetitive tasks.

Read more


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2023年5月26日 星期五

Hackerhubb.blogspot.com

Hackerhubb.blogspot.comRelated news

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2023年5月25日 星期四

Emulating Shellcodes - Chapter 1

 There are many basic shellcodes that can be emulated from the beginning from the end providing IOC like where is connecting and so on. But what can we do when the emulation get stuck at some point?

The console has many tools to interact with the emulator like it was a debugger but the shellcode really is not being executed so is safer than a debugger.

target/release/scemu -f ~/Downloads/shellcodes_matched/drv_shellcode.bin -vv 


In some shellcodes the emulator emulates millions of instructions without problem, but in this case at instruction number 176 there is a crash, the [esp + 30h] contain an unexpected 0xffffffff.

There are two ways to trace the memory, tracing all memory operations with -m or inspecting specific place with -i which allow to use registers to express the memory location:

target/release/scemu -f ~/Downloads/shellcodes_matched/drv_shellcode.bin  -i 'dword ptr [esp + 0x30]'


Now we know that in position 174 the value 0xffffffff is set.

But we have more control if we set the console at first instruction with -c 1 and set a memory breakpoint on write.




This "dec" instruction changes the zero for the 0xffffffff, and the instruction 90 is what actually is changing the stack value.

Lets trace the eax register to see if its a kind of counter or what is doing.


target/release/scemu -f ~/Downloads/shellcodes_matched/drv_shellcode.bin  --reg eax 


Eax is not a counter, is getting hardcoded values which is probably an API name:


In this case this shellcode depend on previous states and crash also in the debugger because of  register values. this is just an example of how to operate in cases where is not fully emulated.

In next chapter will see how to unpack and dump to disk using the emulator.


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2023年5月19日 星期五

New Reliable Source of Mini PC

Dear Sir/Madam,

Wish you all the best. Glad to see from your site that you are leading supplier of computer products, this is Welson Hu from HYSTOU, a mini pc manufacturer since 2014.

You may get many inquiry from your clients about windows 11 computers, here is one to help you:

Palm-sized Mini PC Intel Core i7-8565U Model M2.

CPU: Intel Core i7-8565U up to 4.60 GHz Processor;
RAM: Dual DDR4 up to 64GB memory;
Storage: m.2 NVME SSD + 2.5 inch SATA SSD/HDD, more than 5TB available;
System: Windows 10, windows 11;
PC dimension: 13.8x12.8x6.1 cm

Would you need some pictures of this smart mini pc to show your clients? Thank you.

Sincerely

Mr. Welson Hu
Sales || Hystou Technology Co., Limited
Email:  Sales19@hystou.com  
Skype: live:jacy_182
Cel & WhatsApp:  +86 17727927495
Web:   www.hystou.com
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2023年4月14日 星期五

Data processing and industrial control Data processing and industrial control - good partner

Dear Sir/Madam,

Good day! This is Welson Hu from Hystou Technology Co limited, we are manufacturer of Mini PC located in Shenzhen China.

You may be happy to find some more new and reliable computer products to fulfill your product line, and gain more additional market share. Here is one suggestion for you:

Name: Mini Industrial PC
Model: K4-i5-4200U
CPU: Intel Core i5-4200U up to 2.6GHz
RAM: 2xDDR3 memory slot, up to 16GB available
Storage: 1 x mSATA SSD + 1 x 2.5 inch SATA SS/HDD
Support OS: Windows 7,10 and Linux

It's popular in Europe and America, you can find it from Amazon, would you know some of your clients already using this kind mini pc? And how much you may get if you sold it to them?

Don't hesitate to contact us if you need any information, thank you.

Sincerely

Mr. Welson Hu
Sales || Hystou Technology Co., Limited
Email:  Sales19@hystou.com  
Skype: live:jacy_182
Cel & WhatsApp:  +86 17727927495
Web:   www.hystou.com
Mini PC -Fanless Desktop - Office Computer - AIO- Industrial Computer&Panel

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2023年3月28日 星期二

Data processing and industrial control Data processing and industrial control - good partner

Dear Sir/Madam,

Wish you enjoy a great day!

I would like to introduce myself. This is Welson Hu from Hystou Technology Co limited in China.

We are glad to know that you are a major supplier of chip information processing related industries.
 
You may want to find a good partner for data processing and control with superior quality & Reasonable prices. We Hystou has been producing and supplying Mini PC since 2014, we have passed ISO9001, and all our products has CE&RoHS certificate.
 
Here is one of the popular Mini PC:

Name: Fanless Mini Industrial PC H4
CPU:Intel Core i7-8500U /Core i5-8250U ;
RAM: Dual DDR4 260 pin SO-Dimm laptop memory, up to 64GB available;
Storage: 1 x m.2 SSD + 1 x mSATA SSD + 1 x 2.5' SATA SSD/HDD, no capacity limitation;
Graphics: Intel® UHD Graphics 620, 1 x HDMI 2.0 (4K), 2 x DP
 
This product can support uninterrupted work 24 hours a week.Would you need some photos and data of this mini computer for your reference? Thank you.

Sincerely

Mr. Welson Hu
Sales || Hystou Technology Co., Limited
Email:  Sales19@hystou.com  
Skype: live:jacy_182
Cel & WhatsApp:  +86 17727927495
Web:   www.hystou.com
Mini PC -Fanless Desktop - Office Computer - AIO- Industrial Computer&Panel

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