Showing posts with label did. Show all posts
Showing posts with label did. Show all posts

Friday, 16 December 2016

Look What I did!

Look What I did!


Finally got my computer to boot to an EFI file! Took me about 4 months, and it ended up being really simple. Wasted a lot of time modifying and flashing my BIOS to go about it different ways, and finally one of my ideas worked. This is on my HP dv7t-4100, which is a laptop with almost all of its EFI functionality hidden or removed by its manufacture. Took advantage of HPs System Diagnostics UEFI Tool since I knew that this is the only case when my computer would natively boot to an EFI file.

The file HPs tool runs is CryptRSA.efi which verifies the signature of SystemDiags.efi before preceding to pass control to that file. Unfortunately modifying any of these files would prevent booting into the diagnostics tool. I looked through a bunch of CryptRSA.efi files from a lot of different versions of HPs applications and noticed that they were all exactly the same. This made me assume that they didnt modify them because all their BIOS already implemented the code to verify that specific CryptRSA.efi files integrity. So they would have to release updates for all BIOS if they were to alter CryptRSA.efi in any way.

So then it was just down to finding out how they verified that file and how I could modify this verification to launch a different EFI file. Easy enough since their CryptRSA.efi verification was just a SHA-1 hash. In the end Im now capable of booting into an EFI shell!


And heres me trying to run Windows 8s installer on my MBR disk. I guess its time to switch over to GPT.


Im going to experiment more with these concepts before writing a tutorial on it. If things go right, then this could potentially lead to a way to mod HPs unmoddable RSA BIOS.

Update: Crahzee successfully performed the same mod on his HP G62-220CA bios. Congratulations! Hes the first person Ive seen recreate this! Heres a screen shot of his work. Hope Crahzee doesnt mind me posting this. I like it a lot because it says my name a few times lol :)


Available link for download

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Monday, 3 October 2016

Did you receive a message to upgrade to ‘WhatsApp Gold’

Did you receive a message to upgrade to ‘WhatsApp Gold’


If you have been using the WhatsApp messenger, you may come across a message doing rounds these days asking you to upgrade to the Gold version of WhatsApp.

If you didn’t receive it yet, then you should know that the message “informs” you that the “secret” WhatsApp golden version has been leaked and it was used only by big celebrities until now.

WhatsApp users have been receiving a message, which is purportedly is an invite to upgrade WhatsApp to the Gold version. The message reads as follows:

Hey Finally Secret Whatsapp golden version has been leaked, This version is used only by big celebrities.”Now we can use it too ,WhatsApp Gold Contains many advanced features like WhatsApp Video calling , Delete the messages you sent by mistake , Send more than 100 pics at once ,Free calling ,Change WhatsApp themes and tons of great features. This WhatsApp gold can be activated only Via Invites and I am inviting you. Once you activate this WhatsApp gold , your green icon will change to gold and you can enjoy all features 100% safely. Activate WhatsApp Gold with one click at https://www.goldenversion.com/


Beware! The viral message is a hoax, and WhatsApp has not made any upgrade to the Gold version. On clicking the link, the user is taken to a page, which is currently reflecting a 404 error. This could be a trap of hackers to retrieve users’ personal information.?

In other words, there are high chances that you have just installed a malware on your Android device, which you will need to get rid of as soon as possible. We suggest you to install an antivirus on your Android device, as there are high chances that hackers could access your personal data. It is not the first time when hackers are trying to steal personal information from users by releasing unofficial WhatsApp versions. We suggest you to install and update applications only via Google Play Store, as this is the safest way to keep your mobile device malware-free.

Available link for download

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