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# File 'lib/rex/machscan/scanner.rb', line 96
def scan_segment(segment, param={})
base_addr = segment.vmaddr
segment_offset = segment.fileoff
offset = segment_offset
hits = []
while (offset = mach.index(regex, offset)) != nil
vaddr = base_addr + (offset - segment_offset)
message = ''
parse_ret = false
byte1 = mach.read(offset, 1).unpack("C*")[0]
if byte1 == 0xff
byte2 = mach.read(offset+1, 1).unpack("C*")[0]
regname = Rex::Arch::X86.reg_name32(byte2 & 0x7)
case byte2 & 0xf8
when 0xd0
message = "call #{regname}"
offset += 2
when 0xe0
message = "jmp #{regname}"
offset += 2
when 0xf0
retsize = _ret_size(offset+2)
message = "push #{regname}; " + _parse_ret(mach.read(offset+2, retsize))
offset += 2 + retsize
else
raise "Unexpected value at offset: #{offset}"
end
else
regname = Rex::Arch::X86.reg_name32(byte1 & 0x7)
retsize = _ret_size(offset+1)
message = "push #{regname}; " + _parse_ret(mach.read(offset+1, retsize))
offset += 1 + retsize
end
hits << [ vaddr, message ]
end
return hits
end
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