import sys
import getopt
def Usage():
print "Unkown command line args"
def main():
try:
opts, args = getopt.getopt(sys.argv[1:],"hav:",["help","arch=","verbose"])
except getopt.GetoptError:
print "Unkown command line args"
sys.exit(2)
Verbose = 0
for o,a in opts:
if o in ("-h", "--help"):
Usage ()
sys.exit ()
elif o in ("-a", "--arch"):
Arch = a
else:
Usage ()
sys.exit ()
if Verbose:
print "\nmach-o load commands:"
otoolload = open("otool-load.log", "r")
data = otoolload.read()
otoolload.close()
if Arch == "i386":
eip = data.find("eip")
if eip != -1:
EntryPoint = int (data[eip + 4:eip + 4 + 10], 16)
if Arch == "arm":
r15 = data.find("r15")
if r15 != -1:
EntryPoint = int (data[r15 + 4:r15 + 4 + 10], 16)
if Arch == "x86_64":
rip = data.find("rip")
if rip != -1:
EntryPoint = int (data[rip + 4:rip + 4 + 18], 16)
if EntryPoint == 0:
print "FAIL - no entry point for PE/COFF image"
sys.exit(-1)
else:
if Verbose:
print "Entry Point = 0x%08x" % EntryPoint
if Verbose:
print "\nPE/COFF dump:"
objdump = open("objdump-raw.log", "r")
data = objdump.read()
objdump.close()
Index = data.find("SizeOfImage")
End = data[Index:].find("\n")
SizeOfImage = int (data[Index+11:Index + End], 16);
if Verbose:
print "SizeOfImage = 0x%08x" % SizeOfImage
EndOfTable = data.find("SYMBOL TABLE:")
Index = data.find("Idx Name")
End = data[Index:].find("\n")
Index = Index + End + 1
PeCoffEnd = 0
while Index < EndOfTable:
End = data[Index:].find("\n")
Split = data[Index:Index+End].split()
if int(Split[3],16) != int(Split[5],16):
print "FAIL - %s VMA %08x not equal File off %08x XIP will not work" % (Split[1], int(Split[3],16), int(Split[5],16))
sys.exit(-1)
if int(Split[3],16) + int(Split[2],16) > PeCoffEnd:
PeCoffEnd = int(Split[3],16) + int(Split[2],16)
if Split[1] == ".text":
SecStart = int(Split[3],16)
SecEnd = int(Split[3],16) + int(Split[2],16)
if (EntryPoint < SecStart) or (EntryPoint > SecEnd):
print "FAIL - Entry point (0x%x) not in .text section (0x%x - 0x%x)" % (EntryPoint, SecStart, SecEnd)
sys.exit(-1)
if Verbose:
print "%10s" % Split[1] + ' ' + Split[2] + ' ' + Split[3] + ' ' + Split[4] + ' ' + Split[5] + " End = %x" % PeCoffEnd
Index += data[Index:].find("\n") + 1
Index += data[Index:].find("\n") + 1
if SizeOfImage < PeCoffEnd:
print "FAIL - PE/COFF Header SizeOfImage (0x%x) is not correct. Image larger than size (0x%x)." % (SizeOfImage, PeCoffEnd)
sys.exit(-1)
if Verbose:
print "\nmach-o relocations:"
otoolreloc = open("otool-reloc.log", "r")
lines = otoolreloc.readlines()
otoolreloc.close()
found = False
for line in lines:
if found:
chunk = line.split()
if Verbose:
print chunk[0]
if line.find ("address") > -1:
found = True
if Verbose:
print
if __name__ == "__main__":
main()