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Edit FV search logic

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This commit is contained in:
BrentHoltsclaw
2019-04-02 10:30:22 -07:00
committed by Erik Bjorge
parent 10374bf9c3
commit e684a260f6
1 changed files with 7 additions and 1 deletions
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chipsec/hal/uefi_common.py
+7 -1
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@@ -589,7 +589,13 @@ def NextFwVolume(buffer, off = 0):
res = (None, None, None, None, None, None, None, None, None)
while ((fof + vf_header_size) < size):
fof = buffer.find("_FVH", fof)
if fof < 0x28: return res
if fof == -1 or size - fof < vf_header_size:
#return if signature is not found
return res
elif fof < 0x28:
#continue searching for signatrue if header is not valid
fof += 0x4
continue
fof = fof - 0x28
ZeroVector, FileSystemGuid0, FileSystemGuid1,FileSystemGuid2,FileSystemGuid3, \
FvLength, Signature, Attributes, HeaderLength, Checksum, ExtHeaderOffset, \