forked from OSchip/llvm-project
1847 lines
68 KiB
Python
Executable File
1847 lines
68 KiB
Python
Executable File
#!/usr/bin/env python
|
|
from __future__ import print_function
|
|
|
|
import cmd
|
|
import dict_utils
|
|
import file_extract
|
|
import optparse
|
|
import re
|
|
import struct
|
|
import string
|
|
import io
|
|
import sys
|
|
import uuid
|
|
|
|
# Mach header "magic" constants
|
|
MH_MAGIC = 0xfeedface
|
|
MH_CIGAM = 0xcefaedfe
|
|
MH_MAGIC_64 = 0xfeedfacf
|
|
MH_CIGAM_64 = 0xcffaedfe
|
|
FAT_MAGIC = 0xcafebabe
|
|
FAT_CIGAM = 0xbebafeca
|
|
|
|
# Mach haeder "filetype" constants
|
|
MH_OBJECT = 0x00000001
|
|
MH_EXECUTE = 0x00000002
|
|
MH_FVMLIB = 0x00000003
|
|
MH_CORE = 0x00000004
|
|
MH_PRELOAD = 0x00000005
|
|
MH_DYLIB = 0x00000006
|
|
MH_DYLINKER = 0x00000007
|
|
MH_BUNDLE = 0x00000008
|
|
MH_DYLIB_STUB = 0x00000009
|
|
MH_DSYM = 0x0000000a
|
|
MH_KEXT_BUNDLE = 0x0000000b
|
|
|
|
# Mach haeder "flag" constant bits
|
|
MH_NOUNDEFS = 0x00000001
|
|
MH_INCRLINK = 0x00000002
|
|
MH_DYLDLINK = 0x00000004
|
|
MH_BINDATLOAD = 0x00000008
|
|
MH_PREBOUND = 0x00000010
|
|
MH_SPLIT_SEGS = 0x00000020
|
|
MH_LAZY_INIT = 0x00000040
|
|
MH_TWOLEVEL = 0x00000080
|
|
MH_FORCE_FLAT = 0x00000100
|
|
MH_NOMULTIDEFS = 0x00000200
|
|
MH_NOFIXPREBINDING = 0x00000400
|
|
MH_PREBINDABLE = 0x00000800
|
|
MH_ALLMODSBOUND = 0x00001000
|
|
MH_SUBSECTIONS_VIA_SYMBOLS = 0x00002000
|
|
MH_CANONICAL = 0x00004000
|
|
MH_WEAK_DEFINES = 0x00008000
|
|
MH_BINDS_TO_WEAK = 0x00010000
|
|
MH_ALLOW_STACK_EXECUTION = 0x00020000
|
|
MH_ROOT_SAFE = 0x00040000
|
|
MH_SETUID_SAFE = 0x00080000
|
|
MH_NO_REEXPORTED_DYLIBS = 0x00100000
|
|
MH_PIE = 0x00200000
|
|
MH_DEAD_STRIPPABLE_DYLIB = 0x00400000
|
|
MH_HAS_TLV_DESCRIPTORS = 0x00800000
|
|
MH_NO_HEAP_EXECUTION = 0x01000000
|
|
|
|
# Mach load command constants
|
|
LC_REQ_DYLD = 0x80000000
|
|
LC_SEGMENT = 0x00000001
|
|
LC_SYMTAB = 0x00000002
|
|
LC_SYMSEG = 0x00000003
|
|
LC_THREAD = 0x00000004
|
|
LC_UNIXTHREAD = 0x00000005
|
|
LC_LOADFVMLIB = 0x00000006
|
|
LC_IDFVMLIB = 0x00000007
|
|
LC_IDENT = 0x00000008
|
|
LC_FVMFILE = 0x00000009
|
|
LC_PREPAGE = 0x0000000a
|
|
LC_DYSYMTAB = 0x0000000b
|
|
LC_LOAD_DYLIB = 0x0000000c
|
|
LC_ID_DYLIB = 0x0000000d
|
|
LC_LOAD_DYLINKER = 0x0000000e
|
|
LC_ID_DYLINKER = 0x0000000f
|
|
LC_PREBOUND_DYLIB = 0x00000010
|
|
LC_ROUTINES = 0x00000011
|
|
LC_SUB_FRAMEWORK = 0x00000012
|
|
LC_SUB_UMBRELLA = 0x00000013
|
|
LC_SUB_CLIENT = 0x00000014
|
|
LC_SUB_LIBRARY = 0x00000015
|
|
LC_TWOLEVEL_HINTS = 0x00000016
|
|
LC_PREBIND_CKSUM = 0x00000017
|
|
LC_LOAD_WEAK_DYLIB = 0x00000018 | LC_REQ_DYLD
|
|
LC_SEGMENT_64 = 0x00000019
|
|
LC_ROUTINES_64 = 0x0000001a
|
|
LC_UUID = 0x0000001b
|
|
LC_RPATH = 0x0000001c | LC_REQ_DYLD
|
|
LC_CODE_SIGNATURE = 0x0000001d
|
|
LC_SEGMENT_SPLIT_INFO = 0x0000001e
|
|
LC_REEXPORT_DYLIB = 0x0000001f | LC_REQ_DYLD
|
|
LC_LAZY_LOAD_DYLIB = 0x00000020
|
|
LC_ENCRYPTION_INFO = 0x00000021
|
|
LC_DYLD_INFO = 0x00000022
|
|
LC_DYLD_INFO_ONLY = 0x00000022 | LC_REQ_DYLD
|
|
LC_LOAD_UPWARD_DYLIB = 0x00000023 | LC_REQ_DYLD
|
|
LC_VERSION_MIN_MACOSX = 0x00000024
|
|
LC_VERSION_MIN_IPHONEOS = 0x00000025
|
|
LC_FUNCTION_STARTS = 0x00000026
|
|
LC_DYLD_ENVIRONMENT = 0x00000027
|
|
|
|
# Mach CPU constants
|
|
CPU_ARCH_MASK = 0xff000000
|
|
CPU_ARCH_ABI64 = 0x01000000
|
|
CPU_TYPE_ANY = 0xffffffff
|
|
CPU_TYPE_VAX = 1
|
|
CPU_TYPE_MC680x0 = 6
|
|
CPU_TYPE_I386 = 7
|
|
CPU_TYPE_X86_64 = CPU_TYPE_I386 | CPU_ARCH_ABI64
|
|
CPU_TYPE_MIPS = 8
|
|
CPU_TYPE_MC98000 = 10
|
|
CPU_TYPE_HPPA = 11
|
|
CPU_TYPE_ARM = 12
|
|
CPU_TYPE_MC88000 = 13
|
|
CPU_TYPE_SPARC = 14
|
|
CPU_TYPE_I860 = 15
|
|
CPU_TYPE_ALPHA = 16
|
|
CPU_TYPE_POWERPC = 18
|
|
CPU_TYPE_POWERPC64 = CPU_TYPE_POWERPC | CPU_ARCH_ABI64
|
|
|
|
# VM protection constants
|
|
VM_PROT_READ = 1
|
|
VM_PROT_WRITE = 2
|
|
VM_PROT_EXECUTE = 4
|
|
|
|
# VM protection constants
|
|
N_STAB = 0xe0
|
|
N_PEXT = 0x10
|
|
N_TYPE = 0x0e
|
|
N_EXT = 0x01
|
|
|
|
# Values for nlist N_TYPE bits of the "Mach.NList.type" field.
|
|
N_UNDF = 0x0
|
|
N_ABS = 0x2
|
|
N_SECT = 0xe
|
|
N_PBUD = 0xc
|
|
N_INDR = 0xa
|
|
|
|
# Section indexes for the "Mach.NList.sect_idx" fields
|
|
NO_SECT = 0
|
|
MAX_SECT = 255
|
|
|
|
# Stab defines
|
|
N_GSYM = 0x20
|
|
N_FNAME = 0x22
|
|
N_FUN = 0x24
|
|
N_STSYM = 0x26
|
|
N_LCSYM = 0x28
|
|
N_BNSYM = 0x2e
|
|
N_OPT = 0x3c
|
|
N_RSYM = 0x40
|
|
N_SLINE = 0x44
|
|
N_ENSYM = 0x4e
|
|
N_SSYM = 0x60
|
|
N_SO = 0x64
|
|
N_OSO = 0x66
|
|
N_LSYM = 0x80
|
|
N_BINCL = 0x82
|
|
N_SOL = 0x84
|
|
N_PARAMS = 0x86
|
|
N_VERSION = 0x88
|
|
N_OLEVEL = 0x8A
|
|
N_PSYM = 0xa0
|
|
N_EINCL = 0xa2
|
|
N_ENTRY = 0xa4
|
|
N_LBRAC = 0xc0
|
|
N_EXCL = 0xc2
|
|
N_RBRAC = 0xe0
|
|
N_BCOMM = 0xe2
|
|
N_ECOMM = 0xe4
|
|
N_ECOML = 0xe8
|
|
N_LENG = 0xfe
|
|
|
|
vm_prot_names = ['---', 'r--', '-w-', 'rw-', '--x', 'r-x', '-wx', 'rwx']
|
|
|
|
|
|
def dump_memory(base_addr, data, hex_bytes_len, num_per_line):
|
|
hex_bytes = data.encode('hex')
|
|
if hex_bytes_len == -1:
|
|
hex_bytes_len = len(hex_bytes)
|
|
addr = base_addr
|
|
ascii_str = ''
|
|
i = 0
|
|
while i < hex_bytes_len:
|
|
if ((i / 2) % num_per_line) == 0:
|
|
if i > 0:
|
|
print(' %s' % (ascii_str))
|
|
ascii_str = ''
|
|
print('0x%8.8x:' % (addr + i), end=' ')
|
|
hex_byte = hex_bytes[i:i + 2]
|
|
print(hex_byte, end=' ')
|
|
int_byte = int(hex_byte, 16)
|
|
ascii_char = '%c' % (int_byte)
|
|
if int_byte >= 32 and int_byte < 127:
|
|
ascii_str += ascii_char
|
|
else:
|
|
ascii_str += '.'
|
|
i = i + 2
|
|
if ascii_str:
|
|
if (i / 2) % num_per_line:
|
|
padding = num_per_line - ((i / 2) % num_per_line)
|
|
else:
|
|
padding = 0
|
|
print('%*s%s' % (padding * 3 + 1, '', ascii_str))
|
|
print()
|
|
|
|
|
|
class TerminalColors:
|
|
'''Simple terminal colors class'''
|
|
|
|
def __init__(self, enabled=True):
|
|
# TODO: discover terminal type from "file" and disable if
|
|
# it can't handle the color codes
|
|
self.enabled = enabled
|
|
|
|
def reset(self):
|
|
'''Reset all terminal colors and formatting.'''
|
|
if self.enabled:
|
|
return "\x1b[0m"
|
|
return ''
|
|
|
|
def bold(self, on=True):
|
|
'''Enable or disable bold depending on the "on" parameter.'''
|
|
if self.enabled:
|
|
if on:
|
|
return "\x1b[1m"
|
|
else:
|
|
return "\x1b[22m"
|
|
return ''
|
|
|
|
def italics(self, on=True):
|
|
'''Enable or disable italics depending on the "on" parameter.'''
|
|
if self.enabled:
|
|
if on:
|
|
return "\x1b[3m"
|
|
else:
|
|
return "\x1b[23m"
|
|
return ''
|
|
|
|
def underline(self, on=True):
|
|
'''Enable or disable underline depending on the "on" parameter.'''
|
|
if self.enabled:
|
|
if on:
|
|
return "\x1b[4m"
|
|
else:
|
|
return "\x1b[24m"
|
|
return ''
|
|
|
|
def inverse(self, on=True):
|
|
'''Enable or disable inverse depending on the "on" parameter.'''
|
|
if self.enabled:
|
|
if on:
|
|
return "\x1b[7m"
|
|
else:
|
|
return "\x1b[27m"
|
|
return ''
|
|
|
|
def strike(self, on=True):
|
|
'''Enable or disable strike through depending on the "on" parameter.'''
|
|
if self.enabled:
|
|
if on:
|
|
return "\x1b[9m"
|
|
else:
|
|
return "\x1b[29m"
|
|
return ''
|
|
|
|
def black(self, fg=True):
|
|
'''Set the foreground or background color to black.
|
|
The foreground color will be set if "fg" tests True. The background color will be set if "fg" tests False.'''
|
|
if self.enabled:
|
|
if fg:
|
|
return "\x1b[30m"
|
|
else:
|
|
return "\x1b[40m"
|
|
return ''
|
|
|
|
def red(self, fg=True):
|
|
'''Set the foreground or background color to red.
|
|
The foreground color will be set if "fg" tests True. The background color will be set if "fg" tests False.'''
|
|
if self.enabled:
|
|
if fg:
|
|
return "\x1b[31m"
|
|
else:
|
|
return "\x1b[41m"
|
|
return ''
|
|
|
|
def green(self, fg=True):
|
|
'''Set the foreground or background color to green.
|
|
The foreground color will be set if "fg" tests True. The background color will be set if "fg" tests False.'''
|
|
if self.enabled:
|
|
if fg:
|
|
return "\x1b[32m"
|
|
else:
|
|
return "\x1b[42m"
|
|
return ''
|
|
|
|
def yellow(self, fg=True):
|
|
'''Set the foreground or background color to yellow.
|
|
The foreground color will be set if "fg" tests True. The background color will be set if "fg" tests False.'''
|
|
if self.enabled:
|
|
if fg:
|
|
return "\x1b[43m"
|
|
else:
|
|
return "\x1b[33m"
|
|
return ''
|
|
|
|
def blue(self, fg=True):
|
|
'''Set the foreground or background color to blue.
|
|
The foreground color will be set if "fg" tests True. The background color will be set if "fg" tests False.'''
|
|
if self.enabled:
|
|
if fg:
|
|
return "\x1b[34m"
|
|
else:
|
|
return "\x1b[44m"
|
|
return ''
|
|
|
|
def magenta(self, fg=True):
|
|
'''Set the foreground or background color to magenta.
|
|
The foreground color will be set if "fg" tests True. The background color will be set if "fg" tests False.'''
|
|
if self.enabled:
|
|
if fg:
|
|
return "\x1b[35m"
|
|
else:
|
|
return "\x1b[45m"
|
|
return ''
|
|
|
|
def cyan(self, fg=True):
|
|
'''Set the foreground or background color to cyan.
|
|
The foreground color will be set if "fg" tests True. The background color will be set if "fg" tests False.'''
|
|
if self.enabled:
|
|
if fg:
|
|
return "\x1b[36m"
|
|
else:
|
|
return "\x1b[46m"
|
|
return ''
|
|
|
|
def white(self, fg=True):
|
|
'''Set the foreground or background color to white.
|
|
The foreground color will be set if "fg" tests True. The background color will be set if "fg" tests False.'''
|
|
if self.enabled:
|
|
if fg:
|
|
return "\x1b[37m"
|
|
else:
|
|
return "\x1b[47m"
|
|
return ''
|
|
|
|
def default(self, fg=True):
|
|
'''Set the foreground or background color to the default.
|
|
The foreground color will be set if "fg" tests True. The background color will be set if "fg" tests False.'''
|
|
if self.enabled:
|
|
if fg:
|
|
return "\x1b[39m"
|
|
else:
|
|
return "\x1b[49m"
|
|
return ''
|
|
|
|
|
|
def swap_unpack_char():
|
|
"""Returns the unpack prefix that will for non-native endian-ness."""
|
|
if struct.pack('H', 1).startswith("\x00"):
|
|
return '<'
|
|
return '>'
|
|
|
|
|
|
def dump_hex_bytes(addr, s, bytes_per_line=16):
|
|
i = 0
|
|
line = ''
|
|
for ch in s:
|
|
if (i % bytes_per_line) == 0:
|
|
if line:
|
|
print(line)
|
|
line = '%#8.8x: ' % (addr + i)
|
|
line += "%02X " % ord(ch)
|
|
i += 1
|
|
print(line)
|
|
|
|
|
|
def dump_hex_byte_string_diff(addr, a, b, bytes_per_line=16):
|
|
i = 0
|
|
line = ''
|
|
a_len = len(a)
|
|
b_len = len(b)
|
|
if a_len < b_len:
|
|
max_len = b_len
|
|
else:
|
|
max_len = a_len
|
|
tty_colors = TerminalColors(True)
|
|
for i in range(max_len):
|
|
ch = None
|
|
if i < a_len:
|
|
ch_a = a[i]
|
|
ch = ch_a
|
|
else:
|
|
ch_a = None
|
|
if i < b_len:
|
|
ch_b = b[i]
|
|
if not ch:
|
|
ch = ch_b
|
|
else:
|
|
ch_b = None
|
|
mismatch = ch_a != ch_b
|
|
if (i % bytes_per_line) == 0:
|
|
if line:
|
|
print(line)
|
|
line = '%#8.8x: ' % (addr + i)
|
|
if mismatch:
|
|
line += tty_colors.red()
|
|
line += "%02X " % ord(ch)
|
|
if mismatch:
|
|
line += tty_colors.default()
|
|
i += 1
|
|
|
|
print(line)
|
|
|
|
|
|
class Mach:
|
|
"""Class that does everything mach-o related"""
|
|
|
|
class Arch:
|
|
"""Class that implements mach-o architectures"""
|
|
|
|
def __init__(self, c=0, s=0):
|
|
self.cpu = c
|
|
self.sub = s
|
|
|
|
def set_cpu_type(self, c):
|
|
self.cpu = c
|
|
|
|
def set_cpu_subtype(self, s):
|
|
self.sub = s
|
|
|
|
def set_arch(self, c, s):
|
|
self.cpu = c
|
|
self.sub = s
|
|
|
|
def is_64_bit(self):
|
|
return (self.cpu & CPU_ARCH_ABI64) != 0
|
|
|
|
cpu_infos = [
|
|
["arm", CPU_TYPE_ARM, CPU_TYPE_ANY],
|
|
["arm", CPU_TYPE_ARM, 0],
|
|
["armv4", CPU_TYPE_ARM, 5],
|
|
["armv6", CPU_TYPE_ARM, 6],
|
|
["armv5", CPU_TYPE_ARM, 7],
|
|
["xscale", CPU_TYPE_ARM, 8],
|
|
["armv7", CPU_TYPE_ARM, 9],
|
|
["armv7f", CPU_TYPE_ARM, 10],
|
|
["armv7s", CPU_TYPE_ARM, 11],
|
|
["armv7k", CPU_TYPE_ARM, 12],
|
|
["armv7m", CPU_TYPE_ARM, 15],
|
|
["armv7em", CPU_TYPE_ARM, 16],
|
|
["ppc", CPU_TYPE_POWERPC, CPU_TYPE_ANY],
|
|
["ppc", CPU_TYPE_POWERPC, 0],
|
|
["ppc601", CPU_TYPE_POWERPC, 1],
|
|
["ppc602", CPU_TYPE_POWERPC, 2],
|
|
["ppc603", CPU_TYPE_POWERPC, 3],
|
|
["ppc603e", CPU_TYPE_POWERPC, 4],
|
|
["ppc603ev", CPU_TYPE_POWERPC, 5],
|
|
["ppc604", CPU_TYPE_POWERPC, 6],
|
|
["ppc604e", CPU_TYPE_POWERPC, 7],
|
|
["ppc620", CPU_TYPE_POWERPC, 8],
|
|
["ppc750", CPU_TYPE_POWERPC, 9],
|
|
["ppc7400", CPU_TYPE_POWERPC, 10],
|
|
["ppc7450", CPU_TYPE_POWERPC, 11],
|
|
["ppc970", CPU_TYPE_POWERPC, 100],
|
|
["ppc64", CPU_TYPE_POWERPC64, 0],
|
|
["ppc970-64", CPU_TYPE_POWERPC64, 100],
|
|
["i386", CPU_TYPE_I386, 3],
|
|
["i486", CPU_TYPE_I386, 4],
|
|
["i486sx", CPU_TYPE_I386, 0x84],
|
|
["i386", CPU_TYPE_I386, CPU_TYPE_ANY],
|
|
["x86_64", CPU_TYPE_X86_64, 3],
|
|
["x86_64", CPU_TYPE_X86_64, CPU_TYPE_ANY],
|
|
]
|
|
|
|
def __str__(self):
|
|
for info in self.cpu_infos:
|
|
if self.cpu == info[1] and (self.sub & 0x00ffffff) == info[2]:
|
|
return info[0]
|
|
return "{0}.{1}".format(self.cpu, self.sub)
|
|
|
|
class Magic(dict_utils.Enum):
|
|
|
|
enum = {
|
|
'MH_MAGIC': MH_MAGIC,
|
|
'MH_CIGAM': MH_CIGAM,
|
|
'MH_MAGIC_64': MH_MAGIC_64,
|
|
'MH_CIGAM_64': MH_CIGAM_64,
|
|
'FAT_MAGIC': FAT_MAGIC,
|
|
'FAT_CIGAM': FAT_CIGAM
|
|
}
|
|
|
|
def __init__(self, initial_value=0):
|
|
dict_utils.Enum.__init__(self, initial_value, self.enum)
|
|
|
|
def is_skinny_mach_file(self):
|
|
return self.value == MH_MAGIC or self.value == MH_CIGAM or self.value == MH_MAGIC_64 or self.value == MH_CIGAM_64
|
|
|
|
def is_universal_mach_file(self):
|
|
return self.value == FAT_MAGIC or self.value == FAT_CIGAM
|
|
|
|
def unpack(self, data):
|
|
data.set_byte_order('native')
|
|
self.value = data.get_uint32()
|
|
|
|
def get_byte_order(self):
|
|
if self.value == MH_CIGAM or self.value == MH_CIGAM_64 or self.value == FAT_CIGAM:
|
|
return swap_unpack_char()
|
|
else:
|
|
return '='
|
|
|
|
def is_64_bit(self):
|
|
return self.value == MH_MAGIC_64 or self.value == MH_CIGAM_64
|
|
|
|
def __init__(self):
|
|
self.magic = Mach.Magic()
|
|
self.content = None
|
|
self.path = None
|
|
|
|
def extract(self, path, extractor):
|
|
self.path = path
|
|
self.unpack(extractor)
|
|
|
|
def parse(self, path):
|
|
self.path = path
|
|
try:
|
|
f = open(self.path)
|
|
file_extractor = file_extract.FileExtract(f, '=')
|
|
self.unpack(file_extractor)
|
|
# f.close()
|
|
except IOError as xxx_todo_changeme:
|
|
(errno, strerror) = xxx_todo_changeme.args
|
|
print("I/O error({0}): {1}".format(errno, strerror))
|
|
except ValueError:
|
|
print("Could not convert data to an integer.")
|
|
except:
|
|
print("Unexpected error:", sys.exc_info()[0])
|
|
raise
|
|
|
|
def compare(self, rhs):
|
|
self.content.compare(rhs.content)
|
|
|
|
def dump(self, options=None):
|
|
self.content.dump(options)
|
|
|
|
def dump_header(self, dump_description=True, options=None):
|
|
self.content.dump_header(dump_description, options)
|
|
|
|
def dump_load_commands(self, dump_description=True, options=None):
|
|
self.content.dump_load_commands(dump_description, options)
|
|
|
|
def dump_sections(self, dump_description=True, options=None):
|
|
self.content.dump_sections(dump_description, options)
|
|
|
|
def dump_section_contents(self, options):
|
|
self.content.dump_section_contents(options)
|
|
|
|
def dump_symtab(self, dump_description=True, options=None):
|
|
self.content.dump_symtab(dump_description, options)
|
|
|
|
def dump_symbol_names_matching_regex(self, regex, file=None):
|
|
self.content.dump_symbol_names_matching_regex(regex, file)
|
|
|
|
def description(self):
|
|
return self.content.description()
|
|
|
|
def unpack(self, data):
|
|
self.magic.unpack(data)
|
|
if self.magic.is_skinny_mach_file():
|
|
self.content = Mach.Skinny(self.path)
|
|
elif self.magic.is_universal_mach_file():
|
|
self.content = Mach.Universal(self.path)
|
|
else:
|
|
self.content = None
|
|
|
|
if self.content is not None:
|
|
self.content.unpack(data, self.magic)
|
|
|
|
def is_valid(self):
|
|
return self.content is not None
|
|
|
|
class Universal:
|
|
|
|
def __init__(self, path):
|
|
self.path = path
|
|
self.type = 'universal'
|
|
self.file_off = 0
|
|
self.magic = None
|
|
self.nfat_arch = 0
|
|
self.archs = list()
|
|
|
|
def description(self):
|
|
s = '%#8.8x: %s (' % (self.file_off, self.path)
|
|
archs_string = ''
|
|
for arch in self.archs:
|
|
if len(archs_string):
|
|
archs_string += ', '
|
|
archs_string += '%s' % arch.arch
|
|
s += archs_string
|
|
s += ')'
|
|
return s
|
|
|
|
def unpack(self, data, magic=None):
|
|
self.file_off = data.tell()
|
|
if magic is None:
|
|
self.magic = Mach.Magic()
|
|
self.magic.unpack(data)
|
|
else:
|
|
self.magic = magic
|
|
self.file_off = self.file_off - 4
|
|
# Universal headers are always in big endian
|
|
data.set_byte_order('big')
|
|
self.nfat_arch = data.get_uint32()
|
|
for i in range(self.nfat_arch):
|
|
self.archs.append(Mach.Universal.ArchInfo())
|
|
self.archs[i].unpack(data)
|
|
for i in range(self.nfat_arch):
|
|
self.archs[i].mach = Mach.Skinny(self.path)
|
|
data.seek(self.archs[i].offset, 0)
|
|
skinny_magic = Mach.Magic()
|
|
skinny_magic.unpack(data)
|
|
self.archs[i].mach.unpack(data, skinny_magic)
|
|
|
|
def compare(self, rhs):
|
|
print('error: comparing two universal files is not supported yet')
|
|
return False
|
|
|
|
def dump(self, options):
|
|
if options.dump_header:
|
|
print()
|
|
print("Universal Mach File: magic = %s, nfat_arch = %u" % (self.magic, self.nfat_arch))
|
|
print()
|
|
if self.nfat_arch > 0:
|
|
if options.dump_header:
|
|
self.archs[0].dump_header(True, options)
|
|
for i in range(self.nfat_arch):
|
|
self.archs[i].dump_flat(options)
|
|
if options.dump_header:
|
|
print()
|
|
for i in range(self.nfat_arch):
|
|
self.archs[i].mach.dump(options)
|
|
|
|
def dump_header(self, dump_description=True, options=None):
|
|
if dump_description:
|
|
print(self.description())
|
|
for i in range(self.nfat_arch):
|
|
self.archs[i].mach.dump_header(True, options)
|
|
print()
|
|
|
|
def dump_load_commands(self, dump_description=True, options=None):
|
|
if dump_description:
|
|
print(self.description())
|
|
for i in range(self.nfat_arch):
|
|
self.archs[i].mach.dump_load_commands(True, options)
|
|
print()
|
|
|
|
def dump_sections(self, dump_description=True, options=None):
|
|
if dump_description:
|
|
print(self.description())
|
|
for i in range(self.nfat_arch):
|
|
self.archs[i].mach.dump_sections(True, options)
|
|
print()
|
|
|
|
def dump_section_contents(self, options):
|
|
for i in range(self.nfat_arch):
|
|
self.archs[i].mach.dump_section_contents(options)
|
|
print()
|
|
|
|
def dump_symtab(self, dump_description=True, options=None):
|
|
if dump_description:
|
|
print(self.description())
|
|
for i in range(self.nfat_arch):
|
|
self.archs[i].mach.dump_symtab(True, options)
|
|
print()
|
|
|
|
def dump_symbol_names_matching_regex(self, regex, file=None):
|
|
for i in range(self.nfat_arch):
|
|
self.archs[i].mach.dump_symbol_names_matching_regex(
|
|
regex, file)
|
|
|
|
class ArchInfo:
|
|
|
|
def __init__(self):
|
|
self.arch = Mach.Arch(0, 0)
|
|
self.offset = 0
|
|
self.size = 0
|
|
self.align = 0
|
|
self.mach = None
|
|
|
|
def unpack(self, data):
|
|
# Universal headers are always in big endian
|
|
data.set_byte_order('big')
|
|
self.arch.cpu, self.arch.sub, self.offset, self.size, self.align = data.get_n_uint32(
|
|
5)
|
|
|
|
def dump_header(self, dump_description=True, options=None):
|
|
if options.verbose:
|
|
print("CPU SUBTYPE OFFSET SIZE ALIGN")
|
|
print("---------- ---------- ---------- ---------- ----------")
|
|
else:
|
|
print("ARCH FILEOFFSET FILESIZE ALIGN")
|
|
print("---------- ---------- ---------- ----------")
|
|
|
|
def dump_flat(self, options):
|
|
if options.verbose:
|
|
print("%#8.8x %#8.8x %#8.8x %#8.8x %#8.8x" % (self.arch.cpu, self.arch.sub, self.offset, self.size, self.align))
|
|
else:
|
|
print("%-10s %#8.8x %#8.8x %#8.8x" % (self.arch, self.offset, self.size, self.align))
|
|
|
|
def dump(self):
|
|
print(" cputype: %#8.8x" % self.arch.cpu)
|
|
print("cpusubtype: %#8.8x" % self.arch.sub)
|
|
print(" offset: %#8.8x" % self.offset)
|
|
print(" size: %#8.8x" % self.size)
|
|
print(" align: %#8.8x" % self.align)
|
|
|
|
def __str__(self):
|
|
return "Mach.Universal.ArchInfo: %#8.8x %#8.8x %#8.8x %#8.8x %#8.8x" % (
|
|
self.arch.cpu, self.arch.sub, self.offset, self.size, self.align)
|
|
|
|
def __repr__(self):
|
|
return "Mach.Universal.ArchInfo: %#8.8x %#8.8x %#8.8x %#8.8x %#8.8x" % (
|
|
self.arch.cpu, self.arch.sub, self.offset, self.size, self.align)
|
|
|
|
class Flags:
|
|
|
|
def __init__(self, b):
|
|
self.bits = b
|
|
|
|
def __str__(self):
|
|
s = ''
|
|
if self.bits & MH_NOUNDEFS:
|
|
s += 'MH_NOUNDEFS | '
|
|
if self.bits & MH_INCRLINK:
|
|
s += 'MH_INCRLINK | '
|
|
if self.bits & MH_DYLDLINK:
|
|
s += 'MH_DYLDLINK | '
|
|
if self.bits & MH_BINDATLOAD:
|
|
s += 'MH_BINDATLOAD | '
|
|
if self.bits & MH_PREBOUND:
|
|
s += 'MH_PREBOUND | '
|
|
if self.bits & MH_SPLIT_SEGS:
|
|
s += 'MH_SPLIT_SEGS | '
|
|
if self.bits & MH_LAZY_INIT:
|
|
s += 'MH_LAZY_INIT | '
|
|
if self.bits & MH_TWOLEVEL:
|
|
s += 'MH_TWOLEVEL | '
|
|
if self.bits & MH_FORCE_FLAT:
|
|
s += 'MH_FORCE_FLAT | '
|
|
if self.bits & MH_NOMULTIDEFS:
|
|
s += 'MH_NOMULTIDEFS | '
|
|
if self.bits & MH_NOFIXPREBINDING:
|
|
s += 'MH_NOFIXPREBINDING | '
|
|
if self.bits & MH_PREBINDABLE:
|
|
s += 'MH_PREBINDABLE | '
|
|
if self.bits & MH_ALLMODSBOUND:
|
|
s += 'MH_ALLMODSBOUND | '
|
|
if self.bits & MH_SUBSECTIONS_VIA_SYMBOLS:
|
|
s += 'MH_SUBSECTIONS_VIA_SYMBOLS | '
|
|
if self.bits & MH_CANONICAL:
|
|
s += 'MH_CANONICAL | '
|
|
if self.bits & MH_WEAK_DEFINES:
|
|
s += 'MH_WEAK_DEFINES | '
|
|
if self.bits & MH_BINDS_TO_WEAK:
|
|
s += 'MH_BINDS_TO_WEAK | '
|
|
if self.bits & MH_ALLOW_STACK_EXECUTION:
|
|
s += 'MH_ALLOW_STACK_EXECUTION | '
|
|
if self.bits & MH_ROOT_SAFE:
|
|
s += 'MH_ROOT_SAFE | '
|
|
if self.bits & MH_SETUID_SAFE:
|
|
s += 'MH_SETUID_SAFE | '
|
|
if self.bits & MH_NO_REEXPORTED_DYLIBS:
|
|
s += 'MH_NO_REEXPORTED_DYLIBS | '
|
|
if self.bits & MH_PIE:
|
|
s += 'MH_PIE | '
|
|
if self.bits & MH_DEAD_STRIPPABLE_DYLIB:
|
|
s += 'MH_DEAD_STRIPPABLE_DYLIB | '
|
|
if self.bits & MH_HAS_TLV_DESCRIPTORS:
|
|
s += 'MH_HAS_TLV_DESCRIPTORS | '
|
|
if self.bits & MH_NO_HEAP_EXECUTION:
|
|
s += 'MH_NO_HEAP_EXECUTION | '
|
|
# Strip the trailing " |" if we have any flags
|
|
if len(s) > 0:
|
|
s = s[0:-2]
|
|
return s
|
|
|
|
class FileType(dict_utils.Enum):
|
|
|
|
enum = {
|
|
'MH_OBJECT': MH_OBJECT,
|
|
'MH_EXECUTE': MH_EXECUTE,
|
|
'MH_FVMLIB': MH_FVMLIB,
|
|
'MH_CORE': MH_CORE,
|
|
'MH_PRELOAD': MH_PRELOAD,
|
|
'MH_DYLIB': MH_DYLIB,
|
|
'MH_DYLINKER': MH_DYLINKER,
|
|
'MH_BUNDLE': MH_BUNDLE,
|
|
'MH_DYLIB_STUB': MH_DYLIB_STUB,
|
|
'MH_DSYM': MH_DSYM,
|
|
'MH_KEXT_BUNDLE': MH_KEXT_BUNDLE
|
|
}
|
|
|
|
def __init__(self, initial_value=0):
|
|
dict_utils.Enum.__init__(self, initial_value, self.enum)
|
|
|
|
class Skinny:
|
|
|
|
def __init__(self, path):
|
|
self.path = path
|
|
self.type = 'skinny'
|
|
self.data = None
|
|
self.file_off = 0
|
|
self.magic = 0
|
|
self.arch = Mach.Arch(0, 0)
|
|
self.filetype = Mach.FileType(0)
|
|
self.ncmds = 0
|
|
self.sizeofcmds = 0
|
|
self.flags = Mach.Flags(0)
|
|
self.uuid = None
|
|
self.commands = list()
|
|
self.segments = list()
|
|
self.sections = list()
|
|
self.symbols = list()
|
|
self.sections.append(Mach.Section())
|
|
|
|
def description(self):
|
|
return '%#8.8x: %s (%s)' % (self.file_off, self.path, self.arch)
|
|
|
|
def unpack(self, data, magic=None):
|
|
self.data = data
|
|
self.file_off = data.tell()
|
|
if magic is None:
|
|
self.magic = Mach.Magic()
|
|
self.magic.unpack(data)
|
|
else:
|
|
self.magic = magic
|
|
self.file_off = self.file_off - 4
|
|
data.set_byte_order(self.magic.get_byte_order())
|
|
self.arch.cpu, self.arch.sub, self.filetype.value, self.ncmds, self.sizeofcmds, bits = data.get_n_uint32(
|
|
6)
|
|
self.flags.bits = bits
|
|
|
|
if self.is_64_bit():
|
|
data.get_uint32() # Skip reserved word in mach_header_64
|
|
|
|
for i in range(0, self.ncmds):
|
|
lc = self.unpack_load_command(data)
|
|
self.commands.append(lc)
|
|
|
|
def get_data(self):
|
|
if self.data:
|
|
self.data.set_byte_order(self.magic.get_byte_order())
|
|
return self.data
|
|
return None
|
|
|
|
def unpack_load_command(self, data):
|
|
lc = Mach.LoadCommand()
|
|
lc.unpack(self, data)
|
|
lc_command = lc.command.get_enum_value()
|
|
if (lc_command == LC_SEGMENT or
|
|
lc_command == LC_SEGMENT_64):
|
|
lc = Mach.SegmentLoadCommand(lc)
|
|
lc.unpack(self, data)
|
|
elif (lc_command == LC_LOAD_DYLIB or
|
|
lc_command == LC_ID_DYLIB or
|
|
lc_command == LC_LOAD_WEAK_DYLIB or
|
|
lc_command == LC_REEXPORT_DYLIB):
|
|
lc = Mach.DylibLoadCommand(lc)
|
|
lc.unpack(self, data)
|
|
elif (lc_command == LC_LOAD_DYLINKER or
|
|
lc_command == LC_SUB_FRAMEWORK or
|
|
lc_command == LC_SUB_CLIENT or
|
|
lc_command == LC_SUB_UMBRELLA or
|
|
lc_command == LC_SUB_LIBRARY or
|
|
lc_command == LC_ID_DYLINKER or
|
|
lc_command == LC_RPATH):
|
|
lc = Mach.LoadDYLDLoadCommand(lc)
|
|
lc.unpack(self, data)
|
|
elif (lc_command == LC_DYLD_INFO_ONLY):
|
|
lc = Mach.DYLDInfoOnlyLoadCommand(lc)
|
|
lc.unpack(self, data)
|
|
elif (lc_command == LC_SYMTAB):
|
|
lc = Mach.SymtabLoadCommand(lc)
|
|
lc.unpack(self, data)
|
|
elif (lc_command == LC_DYSYMTAB):
|
|
lc = Mach.DYLDSymtabLoadCommand(lc)
|
|
lc.unpack(self, data)
|
|
elif (lc_command == LC_UUID):
|
|
lc = Mach.UUIDLoadCommand(lc)
|
|
lc.unpack(self, data)
|
|
elif (lc_command == LC_CODE_SIGNATURE or
|
|
lc_command == LC_SEGMENT_SPLIT_INFO or
|
|
lc_command == LC_FUNCTION_STARTS):
|
|
lc = Mach.DataBlobLoadCommand(lc)
|
|
lc.unpack(self, data)
|
|
elif (lc_command == LC_UNIXTHREAD):
|
|
lc = Mach.UnixThreadLoadCommand(lc)
|
|
lc.unpack(self, data)
|
|
elif (lc_command == LC_ENCRYPTION_INFO):
|
|
lc = Mach.EncryptionInfoLoadCommand(lc)
|
|
lc.unpack(self, data)
|
|
lc.skip(data)
|
|
return lc
|
|
|
|
def compare(self, rhs):
|
|
print("\nComparing:")
|
|
print("a) %s %s" % (self.arch, self.path))
|
|
print("b) %s %s" % (rhs.arch, rhs.path))
|
|
result = True
|
|
if self.type == rhs.type:
|
|
for lhs_section in self.sections[1:]:
|
|
rhs_section = rhs.get_section_by_section(lhs_section)
|
|
if rhs_section:
|
|
print('comparing %s.%s...' % (lhs_section.segname, lhs_section.sectname), end=' ')
|
|
sys.stdout.flush()
|
|
lhs_data = lhs_section.get_contents(self)
|
|
rhs_data = rhs_section.get_contents(rhs)
|
|
if lhs_data and rhs_data:
|
|
if lhs_data == rhs_data:
|
|
print('ok')
|
|
else:
|
|
lhs_data_len = len(lhs_data)
|
|
rhs_data_len = len(rhs_data)
|
|
# if lhs_data_len < rhs_data_len:
|
|
# if lhs_data == rhs_data[0:lhs_data_len]:
|
|
# print 'section data for %s matches the first %u bytes' % (lhs_section.sectname, lhs_data_len)
|
|
# else:
|
|
# # TODO: check padding
|
|
# result = False
|
|
# elif lhs_data_len > rhs_data_len:
|
|
# if lhs_data[0:rhs_data_len] == rhs_data:
|
|
# print 'section data for %s matches the first %u bytes' % (lhs_section.sectname, lhs_data_len)
|
|
# else:
|
|
# # TODO: check padding
|
|
# result = False
|
|
# else:
|
|
result = False
|
|
print('error: sections differ')
|
|
# print 'a) %s' % (lhs_section)
|
|
# dump_hex_byte_string_diff(0, lhs_data, rhs_data)
|
|
# print 'b) %s' % (rhs_section)
|
|
# dump_hex_byte_string_diff(0, rhs_data, lhs_data)
|
|
elif lhs_data and not rhs_data:
|
|
print('error: section data missing from b:')
|
|
print('a) %s' % (lhs_section))
|
|
print('b) %s' % (rhs_section))
|
|
result = False
|
|
elif not lhs_data and rhs_data:
|
|
print('error: section data missing from a:')
|
|
print('a) %s' % (lhs_section))
|
|
print('b) %s' % (rhs_section))
|
|
result = False
|
|
elif lhs_section.offset or rhs_section.offset:
|
|
print('error: section data missing for both a and b:')
|
|
print('a) %s' % (lhs_section))
|
|
print('b) %s' % (rhs_section))
|
|
result = False
|
|
else:
|
|
print('ok')
|
|
else:
|
|
result = False
|
|
print('error: section %s is missing in %s' % (lhs_section.sectname, rhs.path))
|
|
else:
|
|
print('error: comparing a %s mach-o file with a %s mach-o file is not supported' % (self.type, rhs.type))
|
|
result = False
|
|
if not result:
|
|
print('error: mach files differ')
|
|
return result
|
|
|
|
def dump_header(self, dump_description=True, options=None):
|
|
if options.verbose:
|
|
print("MAGIC CPU SUBTYPE FILETYPE NUM CMDS SIZE CMDS FLAGS")
|
|
print("---------- ---------- ---------- ---------- -------- ---------- ----------")
|
|
else:
|
|
print("MAGIC ARCH FILETYPE NUM CMDS SIZE CMDS FLAGS")
|
|
print("------------ ---------- -------------- -------- ---------- ----------")
|
|
|
|
def dump_flat(self, options):
|
|
if options.verbose:
|
|
print("%#8.8x %#8.8x %#8.8x %#8.8x %#8u %#8.8x %#8.8x" % (self.magic, self.arch.cpu, self.arch.sub, self.filetype.value, self.ncmds, self.sizeofcmds, self.flags.bits))
|
|
else:
|
|
print("%-12s %-10s %-14s %#8u %#8.8x %s" % (self.magic, self.arch, self.filetype, self.ncmds, self.sizeofcmds, self.flags))
|
|
|
|
def dump(self, options):
|
|
if options.dump_header:
|
|
self.dump_header(True, options)
|
|
if options.dump_load_commands:
|
|
self.dump_load_commands(False, options)
|
|
if options.dump_sections:
|
|
self.dump_sections(False, options)
|
|
if options.section_names:
|
|
self.dump_section_contents(options)
|
|
if options.dump_symtab:
|
|
self.get_symtab()
|
|
if len(self.symbols):
|
|
self.dump_sections(False, options)
|
|
else:
|
|
print("No symbols")
|
|
if options.find_mangled:
|
|
self.dump_symbol_names_matching_regex(re.compile('^_?_Z'))
|
|
|
|
def dump_header(self, dump_description=True, options=None):
|
|
if dump_description:
|
|
print(self.description())
|
|
print("Mach Header")
|
|
print(" magic: %#8.8x %s" % (self.magic.value, self.magic))
|
|
print(" cputype: %#8.8x %s" % (self.arch.cpu, self.arch))
|
|
print(" cpusubtype: %#8.8x" % self.arch.sub)
|
|
print(" filetype: %#8.8x %s" % (self.filetype.get_enum_value(), self.filetype.get_enum_name()))
|
|
print(" ncmds: %#8.8x %u" % (self.ncmds, self.ncmds))
|
|
print(" sizeofcmds: %#8.8x" % self.sizeofcmds)
|
|
print(" flags: %#8.8x %s" % (self.flags.bits, self.flags))
|
|
|
|
def dump_load_commands(self, dump_description=True, options=None):
|
|
if dump_description:
|
|
print(self.description())
|
|
for lc in self.commands:
|
|
print(lc)
|
|
|
|
def get_section_by_name(self, name):
|
|
for section in self.sections:
|
|
if section.sectname and section.sectname == name:
|
|
return section
|
|
return None
|
|
|
|
def get_section_by_section(self, other_section):
|
|
for section in self.sections:
|
|
if section.sectname == other_section.sectname and section.segname == other_section.segname:
|
|
return section
|
|
return None
|
|
|
|
def dump_sections(self, dump_description=True, options=None):
|
|
if dump_description:
|
|
print(self.description())
|
|
num_sections = len(self.sections)
|
|
if num_sections > 1:
|
|
self.sections[1].dump_header()
|
|
for sect_idx in range(1, num_sections):
|
|
print("%s" % self.sections[sect_idx])
|
|
|
|
def dump_section_contents(self, options):
|
|
saved_section_to_disk = False
|
|
for sectname in options.section_names:
|
|
section = self.get_section_by_name(sectname)
|
|
if section:
|
|
sect_bytes = section.get_contents(self)
|
|
if options.outfile:
|
|
if not saved_section_to_disk:
|
|
outfile = open(options.outfile, 'w')
|
|
if options.extract_modules:
|
|
# print "Extracting modules from mach file..."
|
|
data = file_extract.FileExtract(
|
|
io.BytesIO(sect_bytes), self.data.byte_order)
|
|
version = data.get_uint32()
|
|
num_modules = data.get_uint32()
|
|
# print "version = %u, num_modules = %u" %
|
|
# (version, num_modules)
|
|
for i in range(num_modules):
|
|
data_offset = data.get_uint64()
|
|
data_size = data.get_uint64()
|
|
name_offset = data.get_uint32()
|
|
language = data.get_uint32()
|
|
flags = data.get_uint32()
|
|
data.seek(name_offset)
|
|
module_name = data.get_c_string()
|
|
# print "module[%u] data_offset = %#16.16x,
|
|
# data_size = %#16.16x, name_offset =
|
|
# %#16.16x (%s), language = %u, flags =
|
|
# %#x" % (i, data_offset, data_size,
|
|
# name_offset, module_name, language,
|
|
# flags)
|
|
data.seek(data_offset)
|
|
outfile.write(data.read_size(data_size))
|
|
else:
|
|
print("Saving section %s to '%s'" % (sectname, options.outfile))
|
|
outfile.write(sect_bytes)
|
|
outfile.close()
|
|
saved_section_to_disk = True
|
|
else:
|
|
print("error: you can only save a single section to disk at a time, skipping section '%s'" % (sectname))
|
|
else:
|
|
print('section %s:\n' % (sectname))
|
|
section.dump_header()
|
|
print('%s\n' % (section))
|
|
dump_memory(0, sect_bytes, options.max_count, 16)
|
|
else:
|
|
print('error: no section named "%s" was found' % (sectname))
|
|
|
|
def get_segment(self, segname):
|
|
if len(self.segments) == 1 and self.segments[0].segname == '':
|
|
return self.segments[0]
|
|
for segment in self.segments:
|
|
if segment.segname == segname:
|
|
return segment
|
|
return None
|
|
|
|
def get_first_load_command(self, lc_enum_value):
|
|
for lc in self.commands:
|
|
if lc.command.value == lc_enum_value:
|
|
return lc
|
|
return None
|
|
|
|
def get_symtab(self):
|
|
if self.data and not self.symbols:
|
|
lc_symtab = self.get_first_load_command(LC_SYMTAB)
|
|
if lc_symtab:
|
|
symtab_offset = self.file_off
|
|
if self.data.is_in_memory():
|
|
linkedit_segment = self.get_segment('__LINKEDIT')
|
|
if linkedit_segment:
|
|
linkedit_vmaddr = linkedit_segment.vmaddr
|
|
linkedit_fileoff = linkedit_segment.fileoff
|
|
symtab_offset = linkedit_vmaddr + lc_symtab.symoff - linkedit_fileoff
|
|
symtab_offset = linkedit_vmaddr + lc_symtab.stroff - linkedit_fileoff
|
|
else:
|
|
symtab_offset += lc_symtab.symoff
|
|
|
|
self.data.seek(symtab_offset)
|
|
is_64 = self.is_64_bit()
|
|
for i in range(lc_symtab.nsyms):
|
|
nlist = Mach.NList()
|
|
nlist.unpack(self, self.data, lc_symtab)
|
|
self.symbols.append(nlist)
|
|
else:
|
|
print("no LC_SYMTAB")
|
|
|
|
def dump_symtab(self, dump_description=True, options=None):
|
|
self.get_symtab()
|
|
if dump_description:
|
|
print(self.description())
|
|
for i, symbol in enumerate(self.symbols):
|
|
print('[%5u] %s' % (i, symbol))
|
|
|
|
def dump_symbol_names_matching_regex(self, regex, file=None):
|
|
self.get_symtab()
|
|
for symbol in self.symbols:
|
|
if symbol.name and regex.search(symbol.name):
|
|
print(symbol.name)
|
|
if file:
|
|
file.write('%s\n' % (symbol.name))
|
|
|
|
def is_64_bit(self):
|
|
return self.magic.is_64_bit()
|
|
|
|
class LoadCommand:
|
|
|
|
class Command(dict_utils.Enum):
|
|
enum = {
|
|
'LC_SEGMENT': LC_SEGMENT,
|
|
'LC_SYMTAB': LC_SYMTAB,
|
|
'LC_SYMSEG': LC_SYMSEG,
|
|
'LC_THREAD': LC_THREAD,
|
|
'LC_UNIXTHREAD': LC_UNIXTHREAD,
|
|
'LC_LOADFVMLIB': LC_LOADFVMLIB,
|
|
'LC_IDFVMLIB': LC_IDFVMLIB,
|
|
'LC_IDENT': LC_IDENT,
|
|
'LC_FVMFILE': LC_FVMFILE,
|
|
'LC_PREPAGE': LC_PREPAGE,
|
|
'LC_DYSYMTAB': LC_DYSYMTAB,
|
|
'LC_LOAD_DYLIB': LC_LOAD_DYLIB,
|
|
'LC_ID_DYLIB': LC_ID_DYLIB,
|
|
'LC_LOAD_DYLINKER': LC_LOAD_DYLINKER,
|
|
'LC_ID_DYLINKER': LC_ID_DYLINKER,
|
|
'LC_PREBOUND_DYLIB': LC_PREBOUND_DYLIB,
|
|
'LC_ROUTINES': LC_ROUTINES,
|
|
'LC_SUB_FRAMEWORK': LC_SUB_FRAMEWORK,
|
|
'LC_SUB_UMBRELLA': LC_SUB_UMBRELLA,
|
|
'LC_SUB_CLIENT': LC_SUB_CLIENT,
|
|
'LC_SUB_LIBRARY': LC_SUB_LIBRARY,
|
|
'LC_TWOLEVEL_HINTS': LC_TWOLEVEL_HINTS,
|
|
'LC_PREBIND_CKSUM': LC_PREBIND_CKSUM,
|
|
'LC_LOAD_WEAK_DYLIB': LC_LOAD_WEAK_DYLIB,
|
|
'LC_SEGMENT_64': LC_SEGMENT_64,
|
|
'LC_ROUTINES_64': LC_ROUTINES_64,
|
|
'LC_UUID': LC_UUID,
|
|
'LC_RPATH': LC_RPATH,
|
|
'LC_CODE_SIGNATURE': LC_CODE_SIGNATURE,
|
|
'LC_SEGMENT_SPLIT_INFO': LC_SEGMENT_SPLIT_INFO,
|
|
'LC_REEXPORT_DYLIB': LC_REEXPORT_DYLIB,
|
|
'LC_LAZY_LOAD_DYLIB': LC_LAZY_LOAD_DYLIB,
|
|
'LC_ENCRYPTION_INFO': LC_ENCRYPTION_INFO,
|
|
'LC_DYLD_INFO': LC_DYLD_INFO,
|
|
'LC_DYLD_INFO_ONLY': LC_DYLD_INFO_ONLY,
|
|
'LC_LOAD_UPWARD_DYLIB': LC_LOAD_UPWARD_DYLIB,
|
|
'LC_VERSION_MIN_MACOSX': LC_VERSION_MIN_MACOSX,
|
|
'LC_VERSION_MIN_IPHONEOS': LC_VERSION_MIN_IPHONEOS,
|
|
'LC_FUNCTION_STARTS': LC_FUNCTION_STARTS,
|
|
'LC_DYLD_ENVIRONMENT': LC_DYLD_ENVIRONMENT
|
|
}
|
|
|
|
def __init__(self, initial_value=0):
|
|
dict_utils.Enum.__init__(self, initial_value, self.enum)
|
|
|
|
def __init__(self, c=None, l=0, o=0):
|
|
if c is not None:
|
|
self.command = c
|
|
else:
|
|
self.command = Mach.LoadCommand.Command(0)
|
|
self.length = l
|
|
self.file_off = o
|
|
|
|
def unpack(self, mach_file, data):
|
|
self.file_off = data.tell()
|
|
self.command.value, self.length = data.get_n_uint32(2)
|
|
|
|
def skip(self, data):
|
|
data.seek(self.file_off + self.length, 0)
|
|
|
|
def __str__(self):
|
|
lc_name = self.command.get_enum_name()
|
|
return '%#8.8x: <%#4.4x> %-24s' % (self.file_off,
|
|
self.length, lc_name)
|
|
|
|
class Section:
|
|
|
|
def __init__(self):
|
|
self.index = 0
|
|
self.is_64 = False
|
|
self.sectname = None
|
|
self.segname = None
|
|
self.addr = 0
|
|
self.size = 0
|
|
self.offset = 0
|
|
self.align = 0
|
|
self.reloff = 0
|
|
self.nreloc = 0
|
|
self.flags = 0
|
|
self.reserved1 = 0
|
|
self.reserved2 = 0
|
|
self.reserved3 = 0
|
|
|
|
def unpack(self, is_64, data):
|
|
self.is_64 = is_64
|
|
self.sectname = data.get_fixed_length_c_string(16, '', True)
|
|
self.segname = data.get_fixed_length_c_string(16, '', True)
|
|
if self.is_64:
|
|
self.addr, self.size = data.get_n_uint64(2)
|
|
self.offset, self.align, self.reloff, self.nreloc, self.flags, self.reserved1, self.reserved2, self.reserved3 = data.get_n_uint32(
|
|
8)
|
|
else:
|
|
self.addr, self.size = data.get_n_uint32(2)
|
|
self.offset, self.align, self.reloff, self.nreloc, self.flags, self.reserved1, self.reserved2 = data.get_n_uint32(
|
|
7)
|
|
|
|
def dump_header(self):
|
|
if self.is_64:
|
|
print("INDEX ADDRESS SIZE OFFSET ALIGN RELOFF NRELOC FLAGS RESERVED1 RESERVED2 RESERVED3 NAME")
|
|
print("===== ------------------ ------------------ ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ----------------------")
|
|
else:
|
|
print("INDEX ADDRESS SIZE OFFSET ALIGN RELOFF NRELOC FLAGS RESERVED1 RESERVED2 NAME")
|
|
print("===== ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ----------------------")
|
|
|
|
def __str__(self):
|
|
if self.is_64:
|
|
return "[%3u] %#16.16x %#16.16x %#8.8x %#8.8x %#8.8x %#8.8x %#8.8x %#8.8x %#8.8x %#8.8x %s.%s" % (
|
|
self.index, self.addr, self.size, self.offset, self.align, self.reloff, self.nreloc, self.flags, self.reserved1, self.reserved2, self.reserved3, self.segname, self.sectname)
|
|
else:
|
|
return "[%3u] %#8.8x %#8.8x %#8.8x %#8.8x %#8.8x %#8.8x %#8.8x %#8.8x %#8.8x %s.%s" % (
|
|
self.index, self.addr, self.size, self.offset, self.align, self.reloff, self.nreloc, self.flags, self.reserved1, self.reserved2, self.segname, self.sectname)
|
|
|
|
def get_contents(self, mach_file):
|
|
'''Get the section contents as a python string'''
|
|
if self.size > 0 and mach_file.get_segment(
|
|
self.segname).filesize > 0:
|
|
data = mach_file.get_data()
|
|
if data:
|
|
section_data_offset = mach_file.file_off + self.offset
|
|
# print '%s.%s is at offset 0x%x with size 0x%x' %
|
|
# (self.segname, self.sectname, section_data_offset,
|
|
# self.size)
|
|
data.push_offset_and_seek(section_data_offset)
|
|
bytes = data.read_size(self.size)
|
|
data.pop_offset_and_seek()
|
|
return bytes
|
|
return None
|
|
|
|
class DylibLoadCommand(LoadCommand):
|
|
|
|
def __init__(self, lc):
|
|
Mach.LoadCommand.__init__(self, lc.command, lc.length, lc.file_off)
|
|
self.name = None
|
|
self.timestamp = 0
|
|
self.current_version = 0
|
|
self.compatibility_version = 0
|
|
|
|
def unpack(self, mach_file, data):
|
|
byte_order_char = mach_file.magic.get_byte_order()
|
|
name_offset, self.timestamp, self.current_version, self.compatibility_version = data.get_n_uint32(
|
|
4)
|
|
data.seek(self.file_off + name_offset, 0)
|
|
self.name = data.get_fixed_length_c_string(self.length - 24)
|
|
|
|
def __str__(self):
|
|
s = Mach.LoadCommand.__str__(self)
|
|
s += "%#8.8x %#8.8x %#8.8x " % (self.timestamp,
|
|
self.current_version,
|
|
self.compatibility_version)
|
|
s += self.name
|
|
return s
|
|
|
|
class LoadDYLDLoadCommand(LoadCommand):
|
|
|
|
def __init__(self, lc):
|
|
Mach.LoadCommand.__init__(self, lc.command, lc.length, lc.file_off)
|
|
self.name = None
|
|
|
|
def unpack(self, mach_file, data):
|
|
data.get_uint32()
|
|
self.name = data.get_fixed_length_c_string(self.length - 12)
|
|
|
|
def __str__(self):
|
|
s = Mach.LoadCommand.__str__(self)
|
|
s += "%s" % self.name
|
|
return s
|
|
|
|
class UnixThreadLoadCommand(LoadCommand):
|
|
|
|
class ThreadState:
|
|
|
|
def __init__(self):
|
|
self.flavor = 0
|
|
self.count = 0
|
|
self.register_values = list()
|
|
|
|
def unpack(self, data):
|
|
self.flavor, self.count = data.get_n_uint32(2)
|
|
self.register_values = data.get_n_uint32(self.count)
|
|
|
|
def __str__(self):
|
|
s = "flavor = %u, count = %u, regs =" % (
|
|
self.flavor, self.count)
|
|
i = 0
|
|
for register_value in self.register_values:
|
|
if i % 8 == 0:
|
|
s += "\n "
|
|
s += " %#8.8x" % register_value
|
|
i += 1
|
|
return s
|
|
|
|
def __init__(self, lc):
|
|
Mach.LoadCommand.__init__(self, lc.command, lc.length, lc.file_off)
|
|
self.reg_sets = list()
|
|
|
|
def unpack(self, mach_file, data):
|
|
reg_set = Mach.UnixThreadLoadCommand.ThreadState()
|
|
reg_set.unpack(data)
|
|
self.reg_sets.append(reg_set)
|
|
|
|
def __str__(self):
|
|
s = Mach.LoadCommand.__str__(self)
|
|
for reg_set in self.reg_sets:
|
|
s += "%s" % reg_set
|
|
return s
|
|
|
|
class DYLDInfoOnlyLoadCommand(LoadCommand):
|
|
|
|
def __init__(self, lc):
|
|
Mach.LoadCommand.__init__(self, lc.command, lc.length, lc.file_off)
|
|
self.rebase_off = 0
|
|
self.rebase_size = 0
|
|
self.bind_off = 0
|
|
self.bind_size = 0
|
|
self.weak_bind_off = 0
|
|
self.weak_bind_size = 0
|
|
self.lazy_bind_off = 0
|
|
self.lazy_bind_size = 0
|
|
self.export_off = 0
|
|
self.export_size = 0
|
|
|
|
def unpack(self, mach_file, data):
|
|
byte_order_char = mach_file.magic.get_byte_order()
|
|
self.rebase_off, self.rebase_size, self.bind_off, self.bind_size, self.weak_bind_off, self.weak_bind_size, self.lazy_bind_off, self.lazy_bind_size, self.export_off, self.export_size = data.get_n_uint32(
|
|
10)
|
|
|
|
def __str__(self):
|
|
s = Mach.LoadCommand.__str__(self)
|
|
s += "rebase_off = %#8.8x, rebase_size = %u, " % (
|
|
self.rebase_off, self.rebase_size)
|
|
s += "bind_off = %#8.8x, bind_size = %u, " % (
|
|
self.bind_off, self.bind_size)
|
|
s += "weak_bind_off = %#8.8x, weak_bind_size = %u, " % (
|
|
self.weak_bind_off, self.weak_bind_size)
|
|
s += "lazy_bind_off = %#8.8x, lazy_bind_size = %u, " % (
|
|
self.lazy_bind_off, self.lazy_bind_size)
|
|
s += "export_off = %#8.8x, export_size = %u, " % (
|
|
self.export_off, self.export_size)
|
|
return s
|
|
|
|
class DYLDSymtabLoadCommand(LoadCommand):
|
|
|
|
def __init__(self, lc):
|
|
Mach.LoadCommand.__init__(self, lc.command, lc.length, lc.file_off)
|
|
self.ilocalsym = 0
|
|
self.nlocalsym = 0
|
|
self.iextdefsym = 0
|
|
self.nextdefsym = 0
|
|
self.iundefsym = 0
|
|
self.nundefsym = 0
|
|
self.tocoff = 0
|
|
self.ntoc = 0
|
|
self.modtaboff = 0
|
|
self.nmodtab = 0
|
|
self.extrefsymoff = 0
|
|
self.nextrefsyms = 0
|
|
self.indirectsymoff = 0
|
|
self.nindirectsyms = 0
|
|
self.extreloff = 0
|
|
self.nextrel = 0
|
|
self.locreloff = 0
|
|
self.nlocrel = 0
|
|
|
|
def unpack(self, mach_file, data):
|
|
byte_order_char = mach_file.magic.get_byte_order()
|
|
self.ilocalsym, self.nlocalsym, self.iextdefsym, self.nextdefsym, self.iundefsym, self.nundefsym, self.tocoff, self.ntoc, self.modtaboff, self.nmodtab, self.extrefsymoff, self.nextrefsyms, self.indirectsymoff, self.nindirectsyms, self.extreloff, self.nextrel, self.locreloff, self.nlocrel = data.get_n_uint32(
|
|
18)
|
|
|
|
def __str__(self):
|
|
s = Mach.LoadCommand.__str__(self)
|
|
# s += "ilocalsym = %u, nlocalsym = %u, " % (self.ilocalsym, self.nlocalsym)
|
|
# s += "iextdefsym = %u, nextdefsym = %u, " % (self.iextdefsym, self.nextdefsym)
|
|
# s += "iundefsym %u, nundefsym = %u, " % (self.iundefsym, self.nundefsym)
|
|
# s += "tocoff = %#8.8x, ntoc = %u, " % (self.tocoff, self.ntoc)
|
|
# s += "modtaboff = %#8.8x, nmodtab = %u, " % (self.modtaboff, self.nmodtab)
|
|
# s += "extrefsymoff = %#8.8x, nextrefsyms = %u, " % (self.extrefsymoff, self.nextrefsyms)
|
|
# s += "indirectsymoff = %#8.8x, nindirectsyms = %u, " % (self.indirectsymoff, self.nindirectsyms)
|
|
# s += "extreloff = %#8.8x, nextrel = %u, " % (self.extreloff, self.nextrel)
|
|
# s += "locreloff = %#8.8x, nlocrel = %u" % (self.locreloff,
|
|
# self.nlocrel)
|
|
s += "ilocalsym = %-10u, nlocalsym = %u\n" % (
|
|
self.ilocalsym, self.nlocalsym)
|
|
s += " iextdefsym = %-10u, nextdefsym = %u\n" % (
|
|
self.iextdefsym, self.nextdefsym)
|
|
s += " iundefsym = %-10u, nundefsym = %u\n" % (
|
|
self.iundefsym, self.nundefsym)
|
|
s += " tocoff = %#8.8x, ntoc = %u\n" % (
|
|
self.tocoff, self.ntoc)
|
|
s += " modtaboff = %#8.8x, nmodtab = %u\n" % (
|
|
self.modtaboff, self.nmodtab)
|
|
s += " extrefsymoff = %#8.8x, nextrefsyms = %u\n" % (
|
|
self.extrefsymoff, self.nextrefsyms)
|
|
s += " indirectsymoff = %#8.8x, nindirectsyms = %u\n" % (
|
|
self.indirectsymoff, self.nindirectsyms)
|
|
s += " extreloff = %#8.8x, nextrel = %u\n" % (
|
|
self.extreloff, self.nextrel)
|
|
s += " locreloff = %#8.8x, nlocrel = %u" % (
|
|
self.locreloff, self.nlocrel)
|
|
return s
|
|
|
|
class SymtabLoadCommand(LoadCommand):
|
|
|
|
def __init__(self, lc):
|
|
Mach.LoadCommand.__init__(self, lc.command, lc.length, lc.file_off)
|
|
self.symoff = 0
|
|
self.nsyms = 0
|
|
self.stroff = 0
|
|
self.strsize = 0
|
|
|
|
def unpack(self, mach_file, data):
|
|
byte_order_char = mach_file.magic.get_byte_order()
|
|
self.symoff, self.nsyms, self.stroff, self.strsize = data.get_n_uint32(
|
|
4)
|
|
|
|
def __str__(self):
|
|
s = Mach.LoadCommand.__str__(self)
|
|
s += "symoff = %#8.8x, nsyms = %u, stroff = %#8.8x, strsize = %u" % (
|
|
self.symoff, self.nsyms, self.stroff, self.strsize)
|
|
return s
|
|
|
|
class UUIDLoadCommand(LoadCommand):
|
|
|
|
def __init__(self, lc):
|
|
Mach.LoadCommand.__init__(self, lc.command, lc.length, lc.file_off)
|
|
self.uuid = None
|
|
|
|
def unpack(self, mach_file, data):
|
|
uuid_data = data.get_n_uint8(16)
|
|
uuid_str = ''
|
|
for byte in uuid_data:
|
|
uuid_str += '%2.2x' % byte
|
|
self.uuid = uuid.UUID(uuid_str)
|
|
mach_file.uuid = self.uuid
|
|
|
|
def __str__(self):
|
|
s = Mach.LoadCommand.__str__(self)
|
|
s += self.uuid.__str__()
|
|
return s
|
|
|
|
class DataBlobLoadCommand(LoadCommand):
|
|
|
|
def __init__(self, lc):
|
|
Mach.LoadCommand.__init__(self, lc.command, lc.length, lc.file_off)
|
|
self.dataoff = 0
|
|
self.datasize = 0
|
|
|
|
def unpack(self, mach_file, data):
|
|
byte_order_char = mach_file.magic.get_byte_order()
|
|
self.dataoff, self.datasize = data.get_n_uint32(2)
|
|
|
|
def __str__(self):
|
|
s = Mach.LoadCommand.__str__(self)
|
|
s += "dataoff = %#8.8x, datasize = %u" % (
|
|
self.dataoff, self.datasize)
|
|
return s
|
|
|
|
class EncryptionInfoLoadCommand(LoadCommand):
|
|
|
|
def __init__(self, lc):
|
|
Mach.LoadCommand.__init__(self, lc.command, lc.length, lc.file_off)
|
|
self.cryptoff = 0
|
|
self.cryptsize = 0
|
|
self.cryptid = 0
|
|
|
|
def unpack(self, mach_file, data):
|
|
byte_order_char = mach_file.magic.get_byte_order()
|
|
self.cryptoff, self.cryptsize, self.cryptid = data.get_n_uint32(3)
|
|
|
|
def __str__(self):
|
|
s = Mach.LoadCommand.__str__(self)
|
|
s += "file-range = [%#8.8x - %#8.8x), cryptsize = %u, cryptid = %u" % (
|
|
self.cryptoff, self.cryptoff + self.cryptsize, self.cryptsize, self.cryptid)
|
|
return s
|
|
|
|
class SegmentLoadCommand(LoadCommand):
|
|
|
|
def __init__(self, lc):
|
|
Mach.LoadCommand.__init__(self, lc.command, lc.length, lc.file_off)
|
|
self.segname = None
|
|
self.vmaddr = 0
|
|
self.vmsize = 0
|
|
self.fileoff = 0
|
|
self.filesize = 0
|
|
self.maxprot = 0
|
|
self.initprot = 0
|
|
self.nsects = 0
|
|
self.flags = 0
|
|
|
|
def unpack(self, mach_file, data):
|
|
is_64 = self.command.get_enum_value() == LC_SEGMENT_64
|
|
self.segname = data.get_fixed_length_c_string(16, '', True)
|
|
if is_64:
|
|
self.vmaddr, self.vmsize, self.fileoff, self.filesize = data.get_n_uint64(
|
|
4)
|
|
else:
|
|
self.vmaddr, self.vmsize, self.fileoff, self.filesize = data.get_n_uint32(
|
|
4)
|
|
self.maxprot, self.initprot, self.nsects, self.flags = data.get_n_uint32(
|
|
4)
|
|
mach_file.segments.append(self)
|
|
for i in range(self.nsects):
|
|
section = Mach.Section()
|
|
section.unpack(is_64, data)
|
|
section.index = len(mach_file.sections)
|
|
mach_file.sections.append(section)
|
|
|
|
def __str__(self):
|
|
s = Mach.LoadCommand.__str__(self)
|
|
if self.command.get_enum_value() == LC_SEGMENT:
|
|
s += "%#8.8x %#8.8x %#8.8x %#8.8x " % (
|
|
self.vmaddr, self.vmsize, self.fileoff, self.filesize)
|
|
else:
|
|
s += "%#16.16x %#16.16x %#16.16x %#16.16x " % (
|
|
self.vmaddr, self.vmsize, self.fileoff, self.filesize)
|
|
s += "%s %s %3u %#8.8x" % (vm_prot_names[self.maxprot], vm_prot_names[
|
|
self.initprot], self.nsects, self.flags)
|
|
s += ' ' + self.segname
|
|
return s
|
|
|
|
class NList:
|
|
|
|
class Type:
|
|
|
|
class Stab(dict_utils.Enum):
|
|
enum = {
|
|
'N_GSYM': N_GSYM,
|
|
'N_FNAME': N_FNAME,
|
|
'N_FUN': N_FUN,
|
|
'N_STSYM': N_STSYM,
|
|
'N_LCSYM': N_LCSYM,
|
|
'N_BNSYM': N_BNSYM,
|
|
'N_OPT': N_OPT,
|
|
'N_RSYM': N_RSYM,
|
|
'N_SLINE': N_SLINE,
|
|
'N_ENSYM': N_ENSYM,
|
|
'N_SSYM': N_SSYM,
|
|
'N_SO': N_SO,
|
|
'N_OSO': N_OSO,
|
|
'N_LSYM': N_LSYM,
|
|
'N_BINCL': N_BINCL,
|
|
'N_SOL': N_SOL,
|
|
'N_PARAMS': N_PARAMS,
|
|
'N_VERSION': N_VERSION,
|
|
'N_OLEVEL': N_OLEVEL,
|
|
'N_PSYM': N_PSYM,
|
|
'N_EINCL': N_EINCL,
|
|
'N_ENTRY': N_ENTRY,
|
|
'N_LBRAC': N_LBRAC,
|
|
'N_EXCL': N_EXCL,
|
|
'N_RBRAC': N_RBRAC,
|
|
'N_BCOMM': N_BCOMM,
|
|
'N_ECOMM': N_ECOMM,
|
|
'N_ECOML': N_ECOML,
|
|
'N_LENG': N_LENG
|
|
}
|
|
|
|
def __init__(self, magic=0):
|
|
dict_utils.Enum.__init__(self, magic, self.enum)
|
|
|
|
def __init__(self, t=0):
|
|
self.value = t
|
|
|
|
def __str__(self):
|
|
n_type = self.value
|
|
if n_type & N_STAB:
|
|
stab = Mach.NList.Type.Stab(self.value)
|
|
return '%s' % stab
|
|
else:
|
|
type = self.value & N_TYPE
|
|
type_str = ''
|
|
if type == N_UNDF:
|
|
type_str = 'N_UNDF'
|
|
elif type == N_ABS:
|
|
type_str = 'N_ABS '
|
|
elif type == N_SECT:
|
|
type_str = 'N_SECT'
|
|
elif type == N_PBUD:
|
|
type_str = 'N_PBUD'
|
|
elif type == N_INDR:
|
|
type_str = 'N_INDR'
|
|
else:
|
|
type_str = "??? (%#2.2x)" % type
|
|
if n_type & N_PEXT:
|
|
type_str += ' | PEXT'
|
|
if n_type & N_EXT:
|
|
type_str += ' | EXT '
|
|
return type_str
|
|
|
|
def __init__(self):
|
|
self.index = 0
|
|
self.name_offset = 0
|
|
self.name = 0
|
|
self.type = Mach.NList.Type()
|
|
self.sect_idx = 0
|
|
self.desc = 0
|
|
self.value = 0
|
|
|
|
def unpack(self, mach_file, data, symtab_lc):
|
|
self.index = len(mach_file.symbols)
|
|
self.name_offset = data.get_uint32()
|
|
self.type.value, self.sect_idx = data.get_n_uint8(2)
|
|
self.desc = data.get_uint16()
|
|
if mach_file.is_64_bit():
|
|
self.value = data.get_uint64()
|
|
else:
|
|
self.value = data.get_uint32()
|
|
data.push_offset_and_seek(
|
|
mach_file.file_off +
|
|
symtab_lc.stroff +
|
|
self.name_offset)
|
|
# print "get string for symbol[%u]" % self.index
|
|
self.name = data.get_c_string()
|
|
data.pop_offset_and_seek()
|
|
|
|
def __str__(self):
|
|
name_display = ''
|
|
if len(self.name):
|
|
name_display = ' "%s"' % self.name
|
|
return '%#8.8x %#2.2x (%-20s) %#2.2x %#4.4x %16.16x%s' % (self.name_offset,
|
|
self.type.value, self.type, self.sect_idx, self.desc, self.value, name_display)
|
|
|
|
class Interactive(cmd.Cmd):
|
|
'''Interactive command interpreter to mach-o files.'''
|
|
|
|
def __init__(self, mach, options):
|
|
cmd.Cmd.__init__(self)
|
|
self.intro = 'Interactive mach-o command interpreter'
|
|
self.prompt = 'mach-o: %s %% ' % mach.path
|
|
self.mach = mach
|
|
self.options = options
|
|
|
|
def default(self, line):
|
|
'''Catch all for unknown command, which will exit the interpreter.'''
|
|
print("uknown command: %s" % line)
|
|
return True
|
|
|
|
def do_q(self, line):
|
|
'''Quit command'''
|
|
return True
|
|
|
|
def do_quit(self, line):
|
|
'''Quit command'''
|
|
return True
|
|
|
|
def do_header(self, line):
|
|
'''Dump mach-o file headers'''
|
|
self.mach.dump_header(True, self.options)
|
|
return False
|
|
|
|
def do_load(self, line):
|
|
'''Dump all mach-o load commands'''
|
|
self.mach.dump_load_commands(True, self.options)
|
|
return False
|
|
|
|
def do_sections(self, line):
|
|
'''Dump all mach-o sections'''
|
|
self.mach.dump_sections(True, self.options)
|
|
return False
|
|
|
|
def do_symtab(self, line):
|
|
'''Dump all mach-o symbols in the symbol table'''
|
|
self.mach.dump_symtab(True, self.options)
|
|
return False
|
|
|
|
if __name__ == '__main__':
|
|
parser = optparse.OptionParser(
|
|
description='A script that parses skinny and universal mach-o files.')
|
|
parser.add_option(
|
|
'--arch',
|
|
'-a',
|
|
type='string',
|
|
metavar='arch',
|
|
dest='archs',
|
|
action='append',
|
|
help='specify one or more architectures by name')
|
|
parser.add_option(
|
|
'-v',
|
|
'--verbose',
|
|
action='store_true',
|
|
dest='verbose',
|
|
help='display verbose debug info',
|
|
default=False)
|
|
parser.add_option(
|
|
'-H',
|
|
'--header',
|
|
action='store_true',
|
|
dest='dump_header',
|
|
help='dump the mach-o file header',
|
|
default=False)
|
|
parser.add_option(
|
|
'-l',
|
|
'--load-commands',
|
|
action='store_true',
|
|
dest='dump_load_commands',
|
|
help='dump the mach-o load commands',
|
|
default=False)
|
|
parser.add_option(
|
|
'-s',
|
|
'--symtab',
|
|
action='store_true',
|
|
dest='dump_symtab',
|
|
help='dump the mach-o symbol table',
|
|
default=False)
|
|
parser.add_option(
|
|
'-S',
|
|
'--sections',
|
|
action='store_true',
|
|
dest='dump_sections',
|
|
help='dump the mach-o sections',
|
|
default=False)
|
|
parser.add_option(
|
|
'--section',
|
|
type='string',
|
|
metavar='sectname',
|
|
dest='section_names',
|
|
action='append',
|
|
help='Specify one or more section names to dump',
|
|
default=[])
|
|
parser.add_option(
|
|
'-o',
|
|
'--out',
|
|
type='string',
|
|
dest='outfile',
|
|
help='Used in conjunction with the --section=NAME option to save a single section\'s data to disk.',
|
|
default=False)
|
|
parser.add_option(
|
|
'-i',
|
|
'--interactive',
|
|
action='store_true',
|
|
dest='interactive',
|
|
help='enable interactive mode',
|
|
default=False)
|
|
parser.add_option(
|
|
'-m',
|
|
'--mangled',
|
|
action='store_true',
|
|
dest='find_mangled',
|
|
help='dump all mangled names in a mach file',
|
|
default=False)
|
|
parser.add_option(
|
|
'-c',
|
|
'--compare',
|
|
action='store_true',
|
|
dest='compare',
|
|
help='compare two mach files',
|
|
default=False)
|
|
parser.add_option(
|
|
'-M',
|
|
'--extract-modules',
|
|
action='store_true',
|
|
dest='extract_modules',
|
|
help='Extract modules from file',
|
|
default=False)
|
|
parser.add_option(
|
|
'-C',
|
|
'--count',
|
|
type='int',
|
|
dest='max_count',
|
|
help='Sets the max byte count when dumping section data',
|
|
default=-1)
|
|
|
|
(options, mach_files) = parser.parse_args()
|
|
if options.extract_modules:
|
|
if options.section_names:
|
|
print("error: can't use --section option with the --extract-modules option")
|
|
exit(1)
|
|
if not options.outfile:
|
|
print("error: the --output=FILE option must be specified with the --extract-modules option")
|
|
exit(1)
|
|
options.section_names.append("__apple_ast")
|
|
if options.compare:
|
|
if len(mach_files) == 2:
|
|
mach_a = Mach()
|
|
mach_b = Mach()
|
|
mach_a.parse(mach_files[0])
|
|
mach_b.parse(mach_files[1])
|
|
mach_a.compare(mach_b)
|
|
else:
|
|
print('error: --compare takes two mach files as arguments')
|
|
else:
|
|
if not (options.dump_header or options.dump_load_commands or options.dump_symtab or options.dump_sections or options.find_mangled or options.section_names):
|
|
options.dump_header = True
|
|
options.dump_load_commands = True
|
|
if options.verbose:
|
|
print('options', options)
|
|
print('mach_files', mach_files)
|
|
for path in mach_files:
|
|
mach = Mach()
|
|
mach.parse(path)
|
|
if options.interactive:
|
|
interpreter = Mach.Interactive(mach, options)
|
|
interpreter.cmdloop()
|
|
else:
|
|
mach.dump(options)
|