diff --git a/README.md b/README.md
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@@ -277,7 +277,8 @@ A collection of awesome penetration testing resources
 * [dnSpy](https://github.com/0xd4d/dnSpy) - dnSpy is a tool to reverse engineer .NET assemblies
 
 #### CTF Tools
-* [Pwntools](https://github.com/Gallopsled/pwntools) - CTF framework for use in CTFs
+* [Pwntools](https://github.com/Gallopsled/pwntools) - Rapid exploit development framework built for use in CTFs
+* [RsaCtfTool](https://github.com/sourcekris/RsaCtfTool) - Decrypt data enciphered using weak RSA keys, and recover private keys from public keys using a variety of automated attacks
 
 ### Books
 #### Penetration Testing Books