SmartScreen Bypass

[Obi]

Have fun brothers.

GitHub - secretsquirrel/SigThief: Stealing Signatures and Making One Invalid Signature at a Time

Stealing Signatures and Making One Invalid Signature at a Time - secretsquirrel/SigThief

github.com

 

[D4nte]

En:
The file signed in will be an externally signed certificate, but it will be invalid and therefore SmartScreen will display it.
from an unknown developer so it is not known how he will bypass the smartscreen

Ru:
Файл на входе будет внешне подписанным но сертификат его будет недейсвительным и поэтому же smartscreen выведит уведомление что файл
от неизвестного разработчика так-что незнаю как он будет обходить smartscreen

 

[Obi]

En:
The file signed in will be an externally signed certificate, but it will be invalid and therefore SmartScreen will display it.
from an unknown developer so it is not known how he will bypass the smartscreen

Ru:
Файл на входе будет внешне подписанным но сертификат его будет недейсвительным и поэтому же smartscreen выведит уведомление что файл
от неизвестного разработчика так-что незнаю как он будет обходить smartscreen

"I've noticed during testing against Anti-Virus over the years that each is different and each prioritize PE signatures differently, whether the signature is valid or not. There are some Anti-Virus vendors that give priority to certain certificate authorities without checking that the signature is actually valid, and there are those that just check to see that the certTable is populated with some value. It's a mess. So I'm releasing this tool to let you quickly do your testing and feel free to report it to vendors or not. In short it will rip a signature off a signed PE file and append it to another one, fixing up the certificate table to sign the file. "

SmartScreen doesn't perform all checks on all vendors.

 

[Guest]

https://github.com/optiv/Mangle

This works good as well thanks for the share

 

[Obi]

https://github.com/optiv/Mangle

This works good as well thanks for the share

I did not know about mangle, thanks!

 

[V3SP3R]

SigThief is now trash. Guaranteed not to bypass smart screen. It's actually an old method to patch a legit signature to your exe & it worked when it was released but as of now, anti-virus companies have all provided an update to block badly signed exe. Once your exe signature says "invalid" you will never bypass anything, even chrome.