Author Topic: Double / Triple Zip and unrar  (Read 2621 times)

Offline user3912

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Double / Triple Zip and unrar
« on: November 25, 2010, 03:25:46 pm »
Hi

Not sure if this is a feature But could not see it.  Any chance of having a double unzip /unrar facility?

It is is getting quite common where sometimes there will be 2-3 zip and unrar files included in the orginal rar

i.e unrar -> extracts to reveal another archive normally a zip -> unzip extracts to yet another rar archive -> unrar then extracts actual files.

I guess it could check on each full extract (to a new folder) if it is zipped/rared, and if it is, complete another unzip/rar process until the end result?

Any Chance of having this?

Many thanks

Offline Hecks

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Re: Double / Triple Zip and unrar
« Reply #1 on: November 25, 2010, 06:04:54 pm »
I've only ever seen this with passworded or virus rubbish.  What on earth is the point?

Offline necrocowboy

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Re: Double / Triple Zip and unrar
« Reply #2 on: November 26, 2010, 10:14:57 am »
I've seen this quite often where the poster tries to reduce the file size by RARing source files, ZIPping the RAR then re-RARing the ZIP

It makes no difference to the size of the original RAR file but is a PITA.  However, I agree with Hecks that this is quite often a technique used to hide a malicious payload as AV programs usually only check the first level of a compressed file (ZIP or RAR).  Personally, I wouldn't want this as an default option as I like to be in control of situations like this.