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Add mbn file format

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Bjoern Kerler 2021-01-11 19:29:50 +01:00
parent bea898de96
commit e1d0000420
1 changed files with 17 additions and 3 deletions
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20
fhloaderparse.py
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@ -34,6 +34,10 @@ vendor["143A"] = "Asus "
vendor["1978"] = "Blackphone "
vendor["2A70"] = "Oxygen "
class MBN:
def __init__(self,memory):
self.imageid,self.flashpartitionversion,self.imagesrc,self.loadaddr,self.imagesz,self.codesz,\
self.sigptr,self.sigsz,self.certptr,self.certsz=unpack("<IIIIIIIIII",memory[0xC:0xC+40])
class Signed:
filename = ''
@ -118,8 +122,7 @@ def extract_hdr(memsection, sign_info, mem_section, code_size, signature_size):
return sign_info
def extract_old_hdr(memsection, sign_info, mem_section, code_size, signature_size):
signatureoffset = memsection.file_start_addr + 0x28 + code_size + signature_size
def extract_old_hdr(signatureoffset, sign_info, mem_section, code_size, signature_size):
signature = {}
if mem_section[signatureoffset] != 0x30:
print("Error on " + sign_info.filename + ", unknown signaturelength")
@ -308,7 +311,8 @@ def main(argv):
print("%s has no signature." % filename)
continue
if version < 6: # MSM,MDM
signinfo = extract_old_hdr(memsection, signinfo, mem_section, code_size, signature_size)
signatureoffset = memsection.file_start_addr + 0x28 + code_size + signature_size
signinfo = extract_old_hdr(signatureoffset, signinfo, mem_section, code_size, signature_size)
if signinfo is None:
continue
filelist.append(signinfo)
@ -320,6 +324,16 @@ def main(argv):
else:
print("Unknown version for " + filename)
continue
elif hdr == 0x844BDCD1:
mbn=MBN(mem_section)
if mbn.sigsz == 0:
print("%s has no signature." % filename)
continue
signatureoffset=mbn.imagesrc+mbn.codesz+mbn.sigsz
signinfo = extract_old_hdr(signatureoffset, signinfo, mem_section, mbn.codesz, mbn.sigsz)
if signinfo is None:
continue
filelist.append(signinfo)
else:
print("Error on " + filename)
continue