coldboot episode and usb drive

[johnnyrage]

i downloaded the source code from the website on the show notes for the latest episode about cold boot attacks and following the install instructions inside the /doc folder when i run the make command i get this

root@bt:~/bios_memimage# make

make -C stand

make[1]: Entering directory `/root/bios_memimage/stand'

make[1]: `libstand.a' is up to date.

make[1]: Leaving directory `/root/bios_memimage/stand'

make -C i386

make[1]: Entering directory `/root/bios_memimage/i386'

as -I../include -o start.o start.s

start.s: Assembler messages:

start.s:138: Error: junk `(bios_disk)' after expression

start.s:142: Error: junk `(GDESC)' after expression

start.s:164: Error: can't handle non absolute segment in `ljmp'

start.s:175: Error: junk `(_main)' after expression

start.s:181: Error: junk `(printf)' after expression

start.s:186: Error: junk `(bios_apm_shutdown)' after expression

start.s:195: Error: junk `(IDESC)' after expression

make[1]: *** [start.o] Error 1

make[1]: Leaving directory `/root/bios_memimage/i386'

make: *** [subdiri386] Error 2

has anyone succesfully compiled the .bin file to copy to usb or if anyone has any ideas on how to solve the error would be much appreciated

[SomethingToChatWith]

If you're not modifying anything in the code use the pre-compiled bin and dd as shown on the episode to install it to a flash drive.

[johnnyrage]

thanks for your reply but i dont see any precompiled version on website,would u like to point me in the right direction please ;)

[SomethingToChatWith]

The download didn't come with a .bin file? Hmm... let me see if I can find it. As for compiling ovbiously you're missing something there or need to include a parameter with make.

[SomethingToChatWith]

Ok, it doesnt. Sometimes these type of files are executible. They've got a /docs dir that may come in handy. Bummer, I was going to try this out but like you I've got very limited experience compiling manually.

[johnnyrage]

i tried compiling under backtrack 4 pre final so it may not have all the files needed so il try under ubuntu tommorrow and let u know how it goes

[SomethingToChatWith]

Yeah good luck. It would be nice if they put up a compiled version. They just assume all of us are hardcore coders.

[johnnyrage]

im still getting the same error message even after trying on ubuntu and following the advice on this website http://www.linuxjournal.com/article/10289 said to change a CFLAG but it still doesnt compile

has anyone actually compiled it and would like to share?

[SomethingToChatWith]

Ovbiously Darren has for the episode. hak5Darren, how'd you go about it?

[SomethingToChatWith]

Ok, tune in at 12:02. He used GCC to compile the code. There's an option you need to throw in (they show it briefly if you wanna pause it). Darren said there was a note somewhere about it but I didnt see it on the site.

[Jonny190]

Just as a helping hand for default bios passwords for what it is worth ;)

[DingleBerries]

Darren has the complied version of it on his site, link. I also have the AESkey find compiled if anyone needs that.

[SomethingToChatWith]

I guess I need to start visiting his blog more often. Thanks for sharing the link DB.

[joesome95]

ok i just got the source tried compiling it and came up with errors also and keep getting 404 on darren's website can any one here post the bin some were or send it thanks

[Shadowplay]

I know this is an old post, but I was having trouble with this until I figured it out 2 minutes ago.

Go here and install Mingw : (mingw-get-inst-20110316.exe)

http://sourceforge.net/projects/mingw/files/

After you're done with that, YOU NEED to install gcc core. Here's the info:

http://www.mingw.org/wiki/InstallationHOWTOforMinGW

Here's the link to gcc-core:

http://sourceforge.net/projects/mingw/files/MinGW/BaseSystem/GCC/Version4/gcc-4.5.2-1/gcc-core-4.5.2-1-mingw32-bin.tar.lzma/

Download and install 7zip:

http://www.7-zip.org/

Place "gcc-core-4.5.2-1-mingw32-bin.tar.lzma" in your MinGW directory:

C:\MinGW\

Right click on "gcc-core-4.5.2-1-mingw32-bin.tar.lzma" and extract it using 7-zip.

Then, Right click on "gcc-core-4.5.2-1-mingw32-bin.tar" and extract it, and copy over your files if your prompted to do so.

Make sure you downloaded "bios_memimage-1.2.tar.gz" from http://citp.princeton.edu/memory/code/ and extracted it using 7-zip.

Finally, open Mingw Shell.

cd C:\bios_memimage-1.2.tar.gz\

make -f Makefile.mingw

If you don't get any errors, you're done!

Sorry for this dumbed down tutorial, just want to make sure everybody understands.

Here's my COMPILED version:

http://www.2shared.com/file/yTscnBoZ/memimage.html

It contains the same files as Bios_memimage from Princeton, but also includes the compiled files (scraper.bin) Just head on over to the /usb folder and you'll see it. I recommend you try compiling it yourself though. It's a good learning experience.

[SteveSi]

For systems with more than 4GB do I need the 64-bit scraper.bin? Do you have 64-bit scraper.bin?

I can't get it to compile under MinGW.

Thanks

Steve