EmpDecrypt

This project implemetns decrypting of EIS passwords in Matrix42 configuration files. It is basically a port of EmpEISDecrypt, all credits go to the original authors.

The reasons why it has been ported:

• Implementation in Go is more portable and can be built/used more easily (no VS and .Net required)
• A decoy lib is included so that Matrix42.Common.AppVerificator.dll is not required
• Implement a more generic interface that allows to pass strings/files/paths via CLI arguments to make it easier to work with many files.

This project requires the EmpCrypt.exe from Matrix42. Due to copyright issues this can't be included in this project.

Usage

Provide hashs as position arguments (Note: hashs most likely contain single and double quotes):

.\bin\empdecrypt A(,'-&-#+# /"*&(',.+ )*/!$%-..,/!)*")+$% X

When using the non-embedded binary or when EmpDecrypt.exe is not in the current path, provide the path with the -c flag:

.\bin\empdecrypt -c "..\..\EmpCrypt.exe"

Make sure the Matrix42.Common.AppVerificator.dll is in the same path as EmpCrypt.exe. Either use the original one or the decoy lib that has previously been built with make dll.

In case many files have to be decrypted, it is recommended to use the following command:

.\bin\empdecrypt -p x:\path\to\ini\files\ | tee-object -filepath z:\output\path\passwords.txt

Building

Install the building dependencies on Windows with Chocolatey:

choco install make
choco install mingw -x86

Build the main binary:

make

Build the decoy DLL:

make dll

Copy EmpCrypt.exe into the bin/ directory.

Embedded Build

In order to create an embedded build, first create a resources folder and copy the external dependencies into that folder:

mkdir resources
cp bin/Matrix42.Common.AppVerificator.dll resources
cp EmpCrypt.exe resources

Then run pkger:

pkger

And finally build the embedded binary:

make embedded

The resulting binary will have no external dependencies.