It's easy to set up a cross-compiliation environment to build ordinary Linux
software for the e-ink Amazon Kindle devices:

* Install Ubuntu 12.04 in a virtual machine
* apt-get install gcc-arm-linux-gnueabi g++-arm-linux-gnueabi

With these tools in place, much software will compile easily just by telling its
configure script which compilers to use. Configure the software to look for
itself in /mnt/us/whatever, make, make install, zip up the "whatever" directory,
and unzip it into the root of the Kindle's visible USB storage.

For example, to build OpenSSL, a command like this will do the trick:

CC="arm-linux-gnueabi-gcc" CPP="arm-linux-gnueabi-cpp" \
STRIP="/usr/bin/arm-linux-gnueabi-strip" ./Configure \
--prefix=/mnt/us/openssl linux-armv4

To build nmap, I've used the following:

CC="arm-linux-gnueabi-gcc" CPP="arm-linux-gnueabi-cpp" \
CXX="arm-linux-gnueabi-g++" STRIP="/usr/bin/arm-linux-gnueabi-strip" \
./configure --prefix=/mnt/us/nmap --without-zenmap --host=arm-none-linux \
--with-liblua=included --with-libpcap=included --with-pcap=linux \
--with-openssl=/mnt/us/openssl

To use the software, you'll need a jailbroken Kindle device with KUAL and kterm
installed. A great place to go for Kindle jailbreaking and development resources
is the Kindle Developer's Corner on mobileread:
https://www.mobileread.com/forums/forumdisplay.php?f=150

Happy Hacking!

-Tinker Fairy