Message blocking

[KeyTech]

Hi, I have a friend who I want to send an email to with an attachment, the attachment is a video. Unfortunatly, the company she works for has a policy of blocking videos (and .exe's). So I tried putting it into a .zip file, but still got blocked, so I tried renaming (to a .doc file) and then sending it, but it was still found as a video.
She is using Exchange 5.5 and I was wondering if there was something I could do to get the video past the screening, do I have to change the encryption of the attachment or something....even if so, the receipiant is not too computer friendly! and cannot do much except rename a file!!
And Im not going to go to the trouble of burning it to CD just for a funny mpg!!
Jay~

My new Tae Kwon Do website is up and running!!

http://www.airport-tkd.com

~KeyTech

 

[mscallisto]

Jay

Can you have your friend access the file through your website?

 

[Empeethree]

" So I tried putting it into a .zip file, but still got blocked, so I tried renaming (to a .doc file) and then sending it, but it was still found as a video."

Dont take this personal but I would have added your email addy to my filter list after seeing something like this. The software we use (Antigen) sends me a report of everything that gets filtered / blocked, and I had someone trying to send an employee one of those elf games, and they tried everything they could think of but it all got blocked. Until I blocked their email. ;-)

 

[ElijahBaley]

Maybe they have a size limitation on incoming attachment files...


"r tape loading error"

 

[KeyTech]

Thanks guys,

mscallisto,
I thought of that, but the user doesn't have Internet access..another policy!! DOH!

Ratio,
I agree, I would have added my addy to the list too!! But they haven't! Not yet anyway!!!!

gjdf1,
The message from their server that I receive is,
"Message blocked from Mail Admin Bla bla bla, this message contains Video Footage which is against policy bla bla bla".
And the same for .exe files, it is an automated reply, so it's not manually scanned through obviously.
So there is no limitation (that I know of)....

hhhmmmm! There must be a way to fool it!?!?! There always is! Jay~

My new Tae Kwon Do website is up and running!!

http://www.airport-tkd.com

~KeyTech

 

[Guest_imported]

My company has a similar policy. Prehaps you're not renaming it correctly. Changing the extention to something like .doc in windows explorer simply turns "file.exe" into "file.doc.exe". Instead, try renaming the file using the command prompt like this: rename file.exe to file.doc and make sure the person on the other end knows how to do the reverse.

 

[KeyTech]

It is being renamed correctly, I've even disassembled the .exe file, and changed the first two (three) lines of the code, to
90 (nop)
90 (nop)
ebs (jmps)
So that when the file is re-assembled, it cannot run as an exe file when renamed back, (unless the code is changed back), and yet it still won't get through.
There must be some sore of digital signature that is assigned to the file that I dont know about...that Exchange can pick up on......? Jay~

My new Tae Kwon Do website is up and running!!

http://www.airport-tkd.com

~KeyTech

 

[JillC]

You're not serious are you, Keytech?
Put it on your website. Send an email to your friend to tell her where to find it, and then tell her to go to a library or an internet cafe and view it there.
A bit of lateral thinking is all that is required. ;-)

 

[KeyTech]

All I did in the end was send it to my home address and then she came over to my house and showed it to her there!

It was just the principle of defeating the message blocking, so that I could help our clients against other people who try to do this for malicious purpose's. Our clients are always weary of email policies, and if they work, (even showing them all the blocked attachments that come in doesn't satisfy them!) so I was trying to test the system for cracks, I suppose its a good thing that I haven't found any!

Although, I have managed to get a .wav file through, even though they are blocked. I just embedded it into a word .doc and that got through. "There's always a way"!!!!!! Jay~

My new Tae Kwon Do website is up and running!!

http://www.airport-tkd.com

~KeyTech