Unusual firewall bypassing techniques, network and computer security.

After a while, finding that nothing more happened, she decided on going into the garden at once; but, alas for poor Alice! when she got to the door, she found she had forgotten the little golden key, and when she went back to the table for it, she found she could not possibly reach it: she could see it quite plainly through the glass, and she tried her best to climb up one of the legs of the table, but it was too slippery; and when she had tired herself out with trying, the poor little thing sat down and cried.

Lewis Carroll "Alice In Wonderland"
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Wsh, "Web Shell" - remote UNIX/WIN shell, that works via HTTP/HTTPS. The package contains two perl scripts for server and client hosts, one C source code and one Java servlet code for the server host : the client script is for console usage and the server scripts run as CGI/Servlet scripts on the target host.

The client part provides shell-like prompt, encapsulating user commands into HTTP POST requests and sending them to the server part script on the target web server directly or via HTTP proxy server. The server part extracts and executes commands from HTTP post requests and returns STDOUT and STDERR output as HTTP response messages. By default both scripts encode HTTP data with Xor.

The key Web Shell features: SSL support (*), Command line history support (*), File upload/download, Protect server part script usage with secret key inside HTTP message, Data flow Xor encoding, Can work trough HTTP proxy server.

(*) - Additional packages are required on the client host.

Alex Dyatlov, Simon Castro
Current Wsh version: 2.2.2; README , CHANGELOG
Download | md5sum: 4b7f51d186b65bd16e304b507b96613c

Index of projects

Paper : A Forensic Analysis : HTTP Protocol.

Team member's sites: hhworld/ The Hitchhiker's World e-zine

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