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Convert Empire profiles to Apache mod_rewrite .htaccess files to support HTTP C2 Redirection

This is a quick script that converts a empire profile to a functional mod_rewrite .htaccess file to support HTTP proxy redirection from Apache to a empire server.

You should test and tune the output as needed before depolying

Updates and Features

  • Rewrite Rules based on valid C2 URIs (HTTP GET, POST, and Stager) and specified User-Agent string. Result: Only requests to valid C2 URIs with a specified UA string will be proxied to the Team Server by default.
  • Uses a custom Malleable C2 profile to build a .htaccess file with corresponding mod_rewrite rules
  • HTTP or HTTPS proxying to the Empire Server
  • HTTP 302 Redirection to a Legitimate Site for Non-Matching Requests

Example

$ python e2modrewrite.py -i profiles/normal/microsoftupdate.profile -c 192.168.1.11 -d https://google.com

#### Save the following as .htaccess in the root web directory
########################################
## .htaccess START

RewriteEngine On

## (Optional)
## Empire Stager
## Uncomment and adjust as needed
#RewriteCond %{REQUEST_URI} ^/css/style1.css?$
#RewriteCond %{HTTP_USER_AGENT} ^$
#RewriteRule ^.*$ "http://192.168.1.11/download/po" [P,L]

## Profile URIs
RewriteCond %{REQUEST_URI} ^/(c/msdownload/update/others/2013/11/9946821_f5082b842c8abc5c47cfc68f98340ec384b69fa9.cab|c/msdownload/update/software/ftpk/2013/11/ie-spelling-nl_3576e6450352dfc0c0892bf62384e75a56d780a7.msu)/?$

## Profile UserAgent
RewriteCond %{HTTP_USER_AGENT} ^Windows-Update-Agent/10\.0\.10011\.16384\ Client-Protocol/1\.40?$
RewriteRule ^.*$ http://192.168.1.11%{REQUEST_URI} [P]

# Redirect all other traffic here
RewriteRule ^.*$ https://google.com/? [L,R=302]

## .htacess END
########################################

Apache Rewrite Setup and Tips

Enable Rewrite and Proxy

a2enmod rewrite
a2enmod proxy
a2enmod proxy_http
service apache2 reload

SSL support requires the following in the site config

# Enable SSL
SSLEngine On
# Enable Proxy
SSLProxyEngine On
SSLProxyVerify none
SSLProxyCheckPeerCN off
SSLProxyCheckPeerName off

References

Apache mod_rewrite

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Convert Empire profiles to Apache mod_rewrite scripts

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