![decompiling an autoit exe decompiling an autoit exe](https://www.goggleheadedhacker.com/assets/images/posts/auto_it/auto_it_2.png)
- Decompiling an autoit exe how to#
- Decompiling an autoit exe password#
- Decompiling an autoit exe professional#
- Decompiling an autoit exe zip#
- Decompiling an autoit exe windows#
Decompiling an autoit exe professional#
That’s very professional of him.įileInstall is also an interesting feature for malware authors: it allows you to include (binary) files in the compiled script. The AutoIt author (Jonathan Bennett) is aware of the limitations of his protection scheme and discloses them.
Decompiling an autoit exe password#
For example, if I wrote a script that contained a username and password (say, for a desktop rollout) then I would be happy using something like a workstation-level user/password but I would not consider it safe for a domain/entire network password unless I was sure that the end-user would not have easy access to the.
![decompiling an autoit exe decompiling an autoit exe](https://2.bp.blogspot.com/-r1A_uTGlCoc/V4-dMHVmm4I/AAAAAAAABQs/T6LPDjCg3PIqKTpCxfdCyfhqc2a0Dh_cACLcB/s1600/auto2exe_view.jpg)
For this reason you should regard the compiled exe as being encoded rather than completely safe. The compiled script and additional files added with FileInstall are compressed with my own (Jon) compression scheme.īecause a compiled script must “run” itself without a password it needs to be able to decrypt itself – i.e., the encryption is two-way. But I skimmed the AutoScript help file for my research, and here is what I found: Like most seasoned computer users, I don’t RTFM before I start using software. Decompile it, and you’ll get the script with your syntax error! You won’t get an error! It’s only when you execute the compiled script that you’ll get an error. I believe that the source-code is stored inside the “compiled” AutoIt script.Īnother test supports this hypothesis: write an AutoIt script with a syntax error and compile it.
![decompiling an autoit exe decompiling an autoit exe](https://fumik0.com/wp-content/uploads/2019/03/Intro-1.png)
But because we still see the whitespace as we typed it in the decompiled program, it’s very likely that we’re not dealing with a real compiler. When compilers compile source-code into machine language or intermediate language (like Java bytecode and. And I found out some other interesting things.Īdd extra whitespace to a script, or change the indentation, compile & decompile it, and the whitespace is preserved.
Decompiling an autoit exe zip#
But you can also identify AutoIt malware with a magic number (see further).ĭecompiling is easy, just start the decompiler (Exe2Aut, it’s in the extras folder of the AutoIt ZIP installation package) and point it to the executable.īut what if it was compiled with a passphrase, and you don’t know the passphrase? Well, as I pointed out in my previous post, you can still execute the script without providing the passphrase. Of course, it’s easy for a malware author to change these telltale signs.
![decompiling an autoit exe decompiling an autoit exe](http://safasice.weebly.com/uploads/1/2/7/3/127373957/378997760_orig.png)
Decompiling an autoit exe windows#
Identifying such a compiled script is easy, the version strings tell you exactly what it is:Īnd the (default) file icon in the Windows Explorer view is also a giveaway: When you compile an AutoIt script with the Aut2Exe tool, by default, an UPX packed executable is produced. In this post, I’m describing a method to identify and reverse AutoIt malware, and I show that old malware packed inside a compiled AutoIt script will elude most AV products.
Decompiling an autoit exe how to#
Since I’ve blogged about malware written with the AutoIt scripting language, I got a couple of mails asking for assistance or advice on how to detect and decompile AutoIt malware compiled to executables.