Devel is Windows 7 box with IIS server and anonymous access to FTP
welcome.png is on the main http page. This file is also visible in the ftp directory. Probably FTP service is opened in the directory of the web server.
Compiling C exploits on windows:
apt-get install gcc-mingw-w64-i686
x64:
i686-w64-mingw32-gcc exploit.c -o exploitx32:
i686-w64-mingw32-gcc 40564.c -o 40564 -lws2_32
