pefile service fails when image header doesn't meet expectations

[mrichard91]

This seems to happen for all samples of type PE32+ executable (console) x86-64, for MS Windows

example md5 5bfca6d8e5f6926942a52f09c4e9cbe4 (in vt)

[mgoffin]

Related to #52. Was closed due to the lack of proper pe hash generation techniques as noted by @wxsBSD

[wxsBSD]

There are some fixes floating around for this. As noted in my comment and gist. It shouldn't be too hard to port them to our pehash implementation, which came from totalhash IIRC.

[wxsBSD]

The patch linked in that issue will make the pehash implementation not die on 64bit binaries, but it is still broken and not trustworthy. But at least the rest of the peinfo service will run. The patch is small enough that you can apply it by hand and submit a PR for me!