MetalMonday/me_cleaner
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Wipe the firmware in case of a ME 6 Ignition image

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Thanks to Plato Mavropoulos for discovering it
This commit is contained in:
Nicola Corna 2018-01-30 21:20:27 +01:00
parent 5bd27b36ba
commit 1299c87745
1 changed files with 26 additions and 6 deletions
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32
me_cleaner.py
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@ -94,6 +94,9 @@ class RegionFile:
else:
raise OutOfRegionException()
def fill_all(self, fill):
self.fill_range(0, self.region_end - self.region_start, fill)
def move_range(self, offset_from, size, offset_to, fill):
if self.region_start + offset_from + size <= self.region_end and \
self.region_start + offset_to + size <= self.region_end:
@ -665,8 +668,22 @@ if __name__ == "__main__":
if me_start > 0:
fdf = RegionFile(f, fd_start, fd_end + 1)
# ME 6 Ignition: wipe everything
me6_ignition = False
if not args.check and not args.soft_disable_only and \
variant == "ME" and version[0] == 6:
mef.seek(ftpr_offset + 0x20)
num_modules = unpack("<I", mef.read(4))[0]
mef.seek(ftpr_offset + 0x290 + (num_modules + 1) * 0x60)
data = mef.read(0xc)
if data[0x0:0x4] == b"$SKU" and data[0x8:0xc] == b"\x00\x00\x00\x00":
print("ME 6 Ignition firmware detected, removing everything...")
mef.fill_all(b"\xff")
me6_ignition = True
if not args.check:
if not args.soft_disable_only:
if not args.soft_disable_only and not me6_ignition:
print("Reading partitions list...")
unremovable_part_fpt = b""
extra_part_end = 0
@ -852,13 +869,16 @@ if __name__ == "__main__":
.format(args.extract_me))
mef_copy = mef.save(args.extract_me, me_end - me_start)
print("Checking the FTPR RSA signature of the extracted ME image... ",
end="")
print_check_partition_signature(mef_copy, ftpr_offset + ftpr_mn2_offset)
if not me6_ignition:
print("Checking the FTPR RSA signature of the extracted ME "
"image... ", end="")
print_check_partition_signature(mef_copy,
ftpr_offset + ftpr_mn2_offset)
mef_copy.close()
print("Checking the FTPR RSA signature... ", end="")
print_check_partition_signature(mef, ftpr_offset + ftpr_mn2_offset)
if not me6_ignition:
print("Checking the FTPR RSA signature... ", end="")
print_check_partition_signature(mef, ftpr_offset + ftpr_mn2_offset)
f.close()