12:56 p.m.
On Wed, Mar 18, 2020 at 01:46:14PM -0400, habib dan aouta wrote:
Hello Richard,
Hope you are doing well. My name is Habib and I am current student
at the University of North Carolina at Charlotte(U.S). I am
currently following your Libnbd client fuzzing tutorial from the
Wordpress articles
[https://rwmj.wordpress.com/2019/10/09/using-american-fuzzy-lop-on-network...]
and I am having issues compiling the
Libnbd-wrapper.c file. After some research I am missing the
Libnbd.so library file that I cannot seems to find anywhere. It will
be nice if you can provide some help. Thank you for your time and
consideration.
Not much to go on. What did you try? What error did you see?
Rich.
--
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
Read my programming and virtualization blog: http://rwmj.wordpress.com
virt-p2v converts physical machines to virtual machines. Boot with a
live CD or over the network (PXE) and turn machines into KVM guests.
http://libguestfs.org/virt-v2v
1:24 p.m.
New subject: Fuzzing Question
So I installed Libnbd which worked fined and then I was trying to run
Libnbd-fuzz-wrapper.c and with afl using :
afl-fuzz -i fuzzing/testcase_dir -o fuzzing/sync_dir -M fuzz01
\./fuzzing/libnbd-fuzz-wrapper @@
when I try that command it gives me an error saying Libnbd-fuzz-wrapper.c is not an EFL
binary. Then I tried to compile Libnbd-fuzz-wrapper.c first into an executable file and
then I get the following error:
libnbd-fuzz-wrapper.c:130:3: warning: implicit declaration of function
'nbd_connect_socket' [-Wimplicit-function-declaration]
nbd_connect_socket (nbd, sock);
I also added the #include<libnbd.h> into the Libnbd-fuzz-wrapper.c but still getting
the same error.
Finally I ran this command : ld -lnbd —verbose and I found out libnbd library is missing
attempt to open //usr/local/lib/x86_64-linux-gnu/libnbd.so failed
attempt to open //usr/local/lib/x86_64-linux-gnu/libnbd.a failed
attempt to open //lib/x86_64-linux-gnu/libnbd.so failed
attempt to open //lib/x86_64-linux-gnu/libnbd.a failed
attempt to open //usr/lib/x86_64-linux-gnu/libnbd.so failed
attempt to open //usr/lib/x86_64-linux-gnu/libnbd.a failed
attempt to open //usr/local/lib64/libnbd.so failed
attempt to open //usr/local/lib64/libnbd.a failed
attempt to open //lib64/libnbd.so failed
attempt to open //lib64/libnbd.a failed
attempt to open //usr/lib64/libnbd.so failed
attempt to open //usr/lib64/libnbd.a failed
attempt to open //usr/local/lib/libnbd.so failed
attempt to open //usr/local/lib/libnbd.a failed
attempt to open //lib/libnbd.so failed
attempt to open //lib/libnbd.a failed
attempt to open //usr/lib/libnbd.so failed
attempt to open //usr/lib/libnbd.a failed
attempt to open //usr/x86_64-linux-gnu/lib64/libnbd.so failed
attempt to open //usr/x86_64-linux-gnu/lib64/libnbd.a failed
attempt to open //usr/x86_64-linux-gnu/lib/libnbd.so failed
attempt to open //usr/x86_64-linux-gnu/lib/libnbd.a failed
ld: cannot find -lnbd
On Mar 18, 2020, at 1:56 PM, Richard W.M. Jones
<rjones(a)redhat.com> wrote:
On Wed, Mar 18, 2020 at 01:46:14PM -0400, habib dan aouta wrote:
> Hello Richard,
>
> Hope you are doing well. My name is Habib and I am current student
> at the University of North Carolina at Charlotte(U.S). I am
> currently following your Libnbd client fuzzing tutorial from the
> Wordpress articles
[https://rwmj.wordpress.com/2019/10/09/using-american-fuzzy-lop-on-network...]
> and I am having issues compiling the
> Libnbd-wrapper.c file. After some research I am missing the
> Libnbd.so library file that I cannot seems to find anywhere. It will
> be nice if you can provide some help. Thank you for your time and
> consideration.
Not much to go on. What did you try? What error did you see?
Rich.
--
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
Read my programming and virtualization blog: http://rwmj.wordpress.com
virt-p2v converts physical machines to virtual machines. Boot with a
live CD or over the network (PXE) and turn machines into KVM guests.
http://libguestfs.org/virt-v2v
3:06 p.m.
New subject: Fuzzing Question
On 3/18/20 1:24 PM, habib dan aouta wrote:
So I installed Libnbd which worked fined and then I was trying to run
Libnbd-fuzz-wrapper.c and with afl using :
afl-fuzz -i fuzzing/testcase_dir -o fuzzing/sync_dir -M fuzz01
\./fuzzing/libnbd-fuzz-wrapper @@
when I try that command it gives me an error saying Libnbd-fuzz-wrapper.c is not an EFL
binary. Then I tried to compile Libnbd-fuzz-wrapper.c first into an executable file and
then I get the following error:
libnbd-fuzz-wrapper.c:130:3: warning: implicit declaration of function
'nbd_connect_socket' [-Wimplicit-function-declaration]
nbd_connect_socket (nbd, sock);
I also added the #include<libnbd.h> into the Libnbd-fuzz-wrapper.c but still
getting the same error.
Finally I ran this command : ld -lnbd —verbose and I found out libnbd library is missing
attempt to open //usr/local/lib/x86_64-linux-gnu/libnbd.so failed
Hmm. That does not happen on Linux, but IS a typical error message on
Cygwin. POSIX says that file names beginning with //name are
implementation-defined; Linux defines them to resolve to /name, Cygwin
defines them to be access to a file on the remote machine 'name' (as a
nod to Windows \\server\share\file). If there is no remote machine
named //usr in your network, that would explain not only this message,
but also the message about libnbd-fuzz-wrapper not being an ELF binary
(Windows uses pe-coff rather than ELF file format for its binaries, and
I have no idea if afl can even begin to work with pe-coff).
But since you didn't give us details about your platform, I'm shooting
in the dark.
--
Eric Blake, Principal Software Engineer
Red Hat, Inc. +1-919-301-3226
Virtualization: qemu.org | libvirt.org
1:28 p.m.
New subject: Fuzzing Questions
So I installed Libnbd which worked fined and then I was trying to run
Libnbd-fuzz-wrapper.c and with afl using :
afl-fuzz -i fuzzing/testcase_dir -o fuzzing/sync_dir -M fuzz01
\./fuzzing/libnbd-fuzz-wrapper @@
when I try that command it gives me an error saying Libnbd-fuzz-wrapper.c is not an EFL
binary. Then I tried to compile Libnbd-fuzz-wrapper.c first into an executable file and
then I get the following error:
libnbd-fuzz-wrapper.c:130:3: warning: implicit declaration of function
'nbd_connect_socket' [-Wimplicit-function-declaration]
nbd_connect_socket (nbd, sock);
I also added the #include<libnbd.h> into the Libnbd-fuzz-wrapper.c but still getting
the same error.
Finally I ran this command : ld -lnbd —verbose and I found out libnbd library is missing
attempt to open //usr/local/lib/x86_64-linux-gnu/libnbd.so failed
attempt to open //usr/local/lib/x86_64-linux-gnu/libnbd.a failed
attempt to open //lib/x86_64-linux-gnu/libnbd.so failed
attempt to open //lib/x86_64-linux-gnu/libnbd.a failed
attempt to open //usr/lib/x86_64-linux-gnu/libnbd.so failed
attempt to open //usr/lib/x86_64-linux-gnu/libnbd.a failed
attempt to open //usr/local/lib64/libnbd.so failed
attempt to open //usr/local/lib64/libnbd.a failed
attempt to open //lib64/libnbd.so failed
attempt to open //lib64/libnbd.a failed
attempt to open //usr/lib64/libnbd.so failed
attempt to open //usr/lib64/libnbd.a failed
attempt to open //usr/local/lib/libnbd.so failed
attempt to open //usr/local/lib/libnbd.a failed
attempt to open //lib/libnbd.so failed
attempt to open //lib/libnbd.a failed
attempt to open //usr/lib/libnbd.so failed
attempt to open //usr/lib/libnbd.a failed
attempt to open //usr/x86_64-linux-gnu/lib64/libnbd.so failed
attempt to open //usr/x86_64-linux-gnu/lib64/libnbd.a failed
attempt to open //usr/x86_64-linux-gnu/lib/libnbd.so failed
attempt to open //usr/x86_64-linux-gnu/lib/libnbd.a failed
ld: cannot find -lnbd
On Mar 18, 2020, at 1:56 PM, Richard W.M. Jones
<rjones(a)redhat.com> wrote:
On Wed, Mar 18, 2020 at 01:46:14PM -0400, habib dan aouta wrote:
> Hello Richard,
>
> Hope you are doing well. My name is Habib and I am current student
> at the University of North Carolina at Charlotte(U.S). I am
> currently following your Libnbd client fuzzing tutorial from the
> Wordpress articles
[https://rwmj.wordpress.com/2019/10/09/using-american-fuzzy-lop-on-network...]
> and I am having issues compiling the
> Libnbd-wrapper.c file. After some research I am missing the
> Libnbd.so library file that I cannot seems to find anywhere. It will
> be nice if you can provide some help. Thank you for your time and
> consideration.
Not much to go on. What did you try? What error did you see?
Rich.
--
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
Read my programming and virtualization blog: http://rwmj.wordpress.com
virt-p2v converts physical machines to virtual machines. Boot with a
live CD or over the network (PXE) and turn machines into KVM guests.
http://libguestfs.org/virt-v2v
1:38 p.m.
New subject: Fuzzing Questions
On Wed, Mar 18, 2020 at 02:28:37PM -0400, habib dan aouta wrote:
So I installed Libnbd which worked fine
Where/how did you install libnbd? Which version?
and then I was trying to run Libnbd-fuzz-wrapper.c and with afl
using :
afl-fuzz -i fuzzing/testcase_dir -o fuzzing/sync_dir -M fuzz01
\./fuzzing/libnbd-fuzz-wrapper @@
when I try that command it gives me an error saying Libnbd-fuzz-wrapper.c is not an EFL
binary. Then I tried to compile Libnbd-fuzz-wrapper.c first into an executable file and
then I get the following error:
If you build libnbd from source then libnbd-fuzz-wrapper should be
built (in the fuzzing/ directory). You shouldn't need to compile it
by hand.
Rich.
--
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
Read my programming and virtualization blog: http://rwmj.wordpress.com
virt-p2v converts physical machines to virtual machines. Boot with a
live CD or over the network (PXE) and turn machines into KVM guests.
http://libguestfs.org/virt-v2v
1692
days inactive
1692
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4 comments
3 participants
participants (3)
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Eric Blake -
habib dan aouta -
Richard W.M. Jones