Firmware dissector for OBi100 VoIP Telephone Adapter

carve_fw.py

#!/usr/bin/env python 

import sys, binascii, struct

def main(argv=None):
	for offset in [0x200, 0x10100, 0x20100, 0x30100, 0x40100, 0x50100, 0x60100, 0x70100, 0x80100, 0x90100]:
		f=open(sys.argv[1], 'rb')
		extract_httpd_resource_files(offset,f)

	for offset in [0x95a15, 0xdd485]:
		f=open(sys.argv[1], 'rb')
		extract_unknown_resource_files(offset,f)

def extract_unknown_resource_files(offset, f):
	f.read(offset)
	print hex(f.tell()), "==", f.tell()
	while '\xFF\xFF\xFF\xFF\x00' == f.read(5): 
		f.read(1) # usually 00, saw an 01
		rec_len, = struct.unpack('>H', f.read(2))
		print "rec_len:", rec_len
		record_content = f.read(rec_len)
		
		fout=open("unk_res_out/%08d.bin" % f.tell(), 'wb')
		fout.write(record_content)
		fout.close()
	print "-----didn't find FF FF FF FF 00 at", hex(f.tell()-5)
	# for i in *.bin; do python ~/src/bin2bmp.py --width 16 "${i}"; convert "${i}".jpg -scale 500% "${i}".png; done

def extract_httpd_resource_files(offset, f):
	f.read(offset)
	print hex(f.tell())
	while '\xf3' == f.read(1):
		filename_len, = struct.unpack('>b', f.read(1))
		print "filename_len:", filename_len
		file_len, = struct.unpack('>H', f.read(2))
		print " file_len:", file_len
		filename = str(f.read(filename_len))
		print " filename:", filename
		file_content=f.read(file_len)
		
		fout=open("httpd_res_out/" + filename, 'wb')
		fout.write(file_content)
		fout.close()
		
	print "-----didn't find 0xF3 at", hex(f.tell()-1)

if __name__ == '__main__':
	sys.exit(main())

You get any further looking into that Obi fw?