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macho

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About

Mach-O file parser.

Installation

brew install --HEAD macmade/tap/macho

Usage

Usage: macho [OPTIONS] [PATH] ...

Supports regular and Fat Mach-O files as well as dyld cache files.
Multiple files can be passed at once.

Options:
    
    -h / --help         Shows this help dialog.
    -i / --info         Prints the detailed Mach-O structure.
    -l / --libs         Prints the list of linked libraries.
    -f / --symbols      Prints the list of symbols.
    -s / --str          Prints the list of strings from __cstring,
                        __oslogstring and __ustring.
    -c / --objc-class   Prints the list of Objective-C classes from
                        __objc_classname.
    -m / --objc-method  Prints the list of Objective-C methods
                        from __objc_methname.
    -d / --data         Prints the file data.

Example output

$ macho --info /System/Library/Frameworks/Foundation.framework/Foundation

Mach-O file: Foundation
{
    CPU:      x86-64 - Generic
    Type:     MH_DYLIB - Dynamically bound shared library
    Flags:    0x02000085
    {
        MH_NOUNDEFS:           No undefined references
        MH_DYLDLINK:           Input for the dynamic linker
        MH_TWOLEVEL:           Using two-level name space bindings
        MH_APP_EXTENSION_SAFE: Can be used in application extensions
    }
    Commands: 33
    {
        LC_SEGMENT_64:
        {
            Name:        __TEXT
            VM address:  0x0000000000000000
            VM size:     3.96 MB
            File offset: 0x0000000000000000
            File size:   3.96 MB
            Max prot:    0x00000005
            Init prot:   0x00000005
            Flags:       0x00000000
            Sections:    20
            {
                Section64:
                {
                    Section:           __text
                    Segment:           __TEXT
                    Address:           0x0000000000001E70
                    Size:              0x0000000000305038
                    Offset:            0x00001E70
                    Alignment:         0x00000004
                    Relocation offset: 0x00000000
                    Relocation count:  0x00000000
                    Flags:             S_REGULAR
                    {
                        S_ATTR_PURE_INSTRUCTIONS
                        S_ATTR_SOME_INSTRUCTIONS
                    }
                }
                Section64:
                {
                    Section:           __stubs
                    Segment:           __TEXT
                    Address:           0x0000000000306EA8
                    Size:              0x00000000000025EC
                    Offset:            0x00306EA8
                    Alignment:         0x00000001
                    Relocation offset: 0x00000000
                    Relocation count:  0x00000000
                    Flags:             S_SYMBOL_STUBS
                    {
                        S_ATTR_PURE_INSTRUCTIONS
                        S_ATTR_SOME_INSTRUCTIONS
                    }
                }
                Section64:
                {
                    Section:           __stub_helper
                    Segment:           __TEXT
                    Address:           0x0000000000309494
                    Size:              0x0000000000003F44
                    Offset:            0x00309494
                    Alignment:         0x00000002
                    Relocation offset: 0x00000000
                    Relocation count:  0x00000000
                    Flags:             S_REGULAR
                    {
                        S_ATTR_PURE_INSTRUCTIONS
                        S_ATTR_SOME_INSTRUCTIONS
                    }
                }
                Section64:
                {
                    Section:           __const
                    Segment:           __TEXT
                    Address:           0x000000000030D3E0
                    Size:              0x000000000000B0D0
                    Offset:            0x0030D3E0
                    Alignment:         0x00000004
                    Relocation offset: 0x00000000
                    Relocation count:  0x00000000
                    Flags:             S_REGULAR
                }
                Section64:
                {
                    Section:           __cstring
                    Segment:           __TEXT
                    Address:           0x00000000003184B0
                    Size:              0x00000000000402FA
                    Offset:            0x003184B0
                    Alignment:         0x00000004
                    Relocation offset: 0x00000000
                    Relocation count:  0x00000000
                    Flags:             S_CSTRING_LITERALS
                }
                Section64:
                {
                    Section:           __gcc_except_tab
                    Segment:           __TEXT
                    Address:           0x00000000003587AC
                    Size:              0x000000000000587C
                    Offset:            0x003587AC
                    Alignment:         0x00000002
                    Relocation offset: 0x00000000
                    Relocation count:  0x00000000
                    Flags:             S_REGULAR
                }
                Section64:
                {
                    Section:           __oslogstring
                    Segment:           __TEXT
                    Address:           0x000000000035E030
                    Size:              0x0000000000006AF9
                    Offset:            0x0035E030
                    Alignment:         0x00000004
                    Relocation offset: 0x00000000
                    Relocation count:  0x00000000
                    Flags:             S_CSTRING_LITERALS
                }
                Section64:
                {
                    Section:           __ustring
                    Segment:           __TEXT
                    Address:           0x0000000000364B2A
                    Size:              0x0000000000000404
                    Offset:            0x00364B2A
                    Alignment:         0x00000001
                    Relocation offset: 0x00000000
                    Relocation count:  0x00000000
                    Flags:             S_REGULAR
                }
                Section64:
                {
                    Section:           __dof_NSXPCList
                    Segment:           __TEXT
                    Address:           0x0000000000364F2E
                    Size:              0x00000000000002E9
                    Offset:            0x00364F2E
                    Alignment:         0x00000000
                    Relocation offset: 0x00000000
                    Relocation count:  0x00000000
                    Flags:             S_DTRACE_DOF
                }
                Section64:
                {
                    Section:           __dof_NSXPCList0
                    Segment:           __TEXT
                    Address:           0x0000000000365217
                    Size:              0x000000000000060B
                    Offset:            0x00365217
                    Alignment:         0x00000000
                    Relocation offset: 0x00000000
                    Relocation count:  0x00000000
                    Flags:             S_DTRACE_DOF
                }
                Section64:
                {
                    Section:           __dof_NSProgres
                    Segment:           __TEXT
                    Address:           0x0000000000365822
                    Size:              0x000000000000115B
                    Offset:            0x00365822
                    Alignment:         0x00000000
                    Relocation offset: 0x00000000
                    Relocation count:  0x00000000
                    Flags:             S_DTRACE_DOF
                }
                Section64:
                {
                    Section:           __dof_NSXPCConn
                    Segment:           __TEXT
                    Address:           0x000000000036697D
                    Size:              0x00000000000021AA
                    Offset:            0x0036697D
                    Alignment:         0x00000000
                    Relocation offset: 0x00000000
                    Relocation count:  0x00000000
                    Flags:             S_DTRACE_DOF
                }
                Section64:
                {
                    Section:           __dof_Cocoa_Lay
                    Segment:           __TEXT
                    Address:           0x0000000000368B27
                    Size:              0x0000000000000500
                    Offset:            0x00368B27
                    Alignment:         0x00000000
                    Relocation offset: 0x00000000
                    Relocation count:  0x00000000
                    Flags:             S_DTRACE_DOF
                }
                Section64:
                {
                    Section:           __dof_NSXPCProx
                    Segment:           __TEXT
                    Address:           0x0000000000369027
                    Size:              0x000000000000075E
                    Offset:            0x00369027
                    Alignment:         0x00000000
                    Relocation offset: 0x00000000
                    Relocation count:  0x00000000
                    Flags:             S_DTRACE_DOF
                }
                Section64:
                {
                    Section:           __dof_NSProcess
                    Segment:           __TEXT
                    Address:           0x0000000000369785
                    Size:              0x0000000000000343
                    Offset:            0x00369785
                    Alignment:         0x00000000
                    Relocation offset: 0x00000000
                    Relocation count:  0x00000000
                    Flags:             S_DTRACE_DOF
                }
                Section64:
                {
                    Section:           __unwind_info
                    Segment:           __TEXT
                    Address:           0x0000000000369AC8
                    Size:              0x000000000000BE7C
                    Offset:            0x00369AC8
                    Alignment:         0x00000002
                    Relocation offset: 0x00000000
                    Relocation count:  0x00000000
                    Flags:             S_REGULAR
                }
                Section64:
                {
                    Section:           __eh_frame
                    Segment:           __TEXT
                    Address:           0x0000000000375948
                    Size:              0x0000000000003228
                    Offset:            0x00375948
                    Alignment:         0x00000003
                    Relocation offset: 0x00000000
                    Relocation count:  0x00000000
                    Flags:             S_REGULAR
                }
                Section64:
                {
                    Section:           __objc_classname
                    Segment:           __TEXT
                    Address:           0x0000000000378B70
                    Size:              0x0000000000006021
                    Offset:            0x00378B70
                    Alignment:         0x00000000
                    Relocation offset: 0x00000000
                    Relocation count:  0x00000000
                    Flags:             S_CSTRING_LITERALS
                }
                Section64:
                {
                    Section:           __objc_methname
                    Segment:           __TEXT
                    Address:           0x000000000037EB91
                    Size:              0x000000000003CBE8
                    Offset:            0x0037EB91
                    Alignment:         0x00000000
                    Relocation offset: 0x00000000
                    Relocation count:  0x00000000
                    Flags:             S_CSTRING_LITERALS
                }
                Section64:
                {
                    Section:           __objc_methtype
                    Segment:           __TEXT
                    Address:           0x00000000003BB779
                    Size:              0x000000000000A887
                    Offset:            0x003BB779
                    Alignment:         0x00000000
                    Relocation offset: 0x00000000
                    Relocation count:  0x00000000
                    Flags:             S_CSTRING_LITERALS
                }
            }
        }
        LC_SEGMENT_64:
        {
            Name:        __DATA
            VM address:  0x00000000003C6000
            VM size:     1.04 MB
            File offset: 0x00000000003C6000
            File size:   1.04 MB
            Max prot:    0x00000003
            Init prot:   0x00000003
            Flags:       0x00000000
            Sections:    26
            {
                Section64:
                {
                    Section:           __nl_symbol_ptr
                    Segment:           __DATA
                    Address:           0x00000000003C6000
                    Size:              0x0000000000000008
                    Offset:            0x003C6000
                    Alignment:         0x00000003
                    Relocation offset: 0x00000000
                    Relocation count:  0x00000000
                    Flags:             S_NON_LAZY_SYMBOL_POINTERS
                }
                Section64:
                {
                    Section:           __got
                    Segment:           __DATA
                    Address:           0x00000000003C6008
                    Size:              0x0000000000000B80
                    Offset:            0x003C6008
                    Alignment:         0x00000003
                    Relocation offset: 0x00000000
                    Relocation count:  0x00000000
                    Flags:             S_NON_LAZY_SYMBOL_POINTERS
                }
                Section64:
                {
                    Section:           __la_symbol_ptr
                    Segment:           __DATA
                    Address:           0x00000000003C6B88
                    Size:              0x0000000000003290
                    Offset:            0x003C6B88
                    Alignment:         0x00000003
                    Relocation offset: 0x00000000
                    Relocation count:  0x00000000
                    Flags:             S_LAZY_SYMBOL_POINTERS
                }
                Section64:
                {
                    Section:           __const
                    Segment:           __DATA
                    Address:           0x00000000003C9E20
                    Size:              0x000000000000DD78
                    Offset:            0x003C9E20
                    Alignment:         0x00000004
                    Relocation offset: 0x00000000
                    Relocation count:  0x00000000
                    Flags:             S_REGULAR
                }
                Section64:
                {
                    Section:           __cfstring
                    Segment:           __DATA
                    Address:           0x00000000003D7B98
                    Size:              0x000000000002DE40
                    Offset:            0x003D7B98
                    Alignment:         0x00000003
                    Relocation offset: 0x00000000
                    Relocation count:  0x00000000
                    Flags:             S_REGULAR
                }
                Section64:
                {
                    Section:           __objc_classlist
                    Segment:           __DATA
                    Address:           0x00000000004059D8
                    Size:              0x00000000000019A0
                    Offset:            0x004059D8
                    Alignment:         0x00000003
                    Relocation offset: 0x00000000
                    Relocation count:  0x00000000
                    Flags:             S_REGULAR
                    {
                        S_ATTR_NO_DEAD_STRIP
                    }
                }
                Section64:
                {
                    Section:           __objc_nlclslist
                    Segment:           __DATA
                    Address:           0x0000000000407378
                    Size:              0x0000000000000018
                    Offset:            0x00407378
                    Alignment:         0x00000003
                    Relocation offset: 0x00000000
                    Relocation count:  0x00000000
                    Flags:             S_REGULAR
                    {
                        S_ATTR_NO_DEAD_STRIP
                    }
                }
                Section64:
                {
                    Section:           __objc_catlist
                    Segment:           __DATA
                    Address:           0x0000000000407390
                    Size:              0x00000000000000F0
                    Offset:            0x00407390
                    Alignment:         0x00000003
                    Relocation offset: 0x00000000
                    Relocation count:  0x00000000
                    Flags:             S_REGULAR
                    {
                        S_ATTR_NO_DEAD_STRIP
                    }
                }
                Section64:
                {
                    Section:           __objc_nlcatlist
                    Segment:           __DATA
                    Address:           0x0000000000407480
                    Size:              0x0000000000000008
                    Offset:            0x00407480
                    Alignment:         0x00000003
                    Relocation offset: 0x00000000
                    Relocation count:  0x00000000
                    Flags:             S_REGULAR
                    {
                        S_ATTR_NO_DEAD_STRIP
                    }
                }
                Section64:
                {
                    Section:           __objc_protolist
                    Segment:           __DATA
                    Address:           0x0000000000407488
                    Size:              0x0000000000000190
                    Offset:            0x00407488
                    Alignment:         0x00000003
                    Relocation offset: 0x00000000
                    Relocation count:  0x00000000
                    Flags:             S_REGULAR
                }
                Section64:
                {
                    Section:           __objc_imageinfo
                    Segment:           __DATA
                    Address:           0x0000000000407618
                    Size:              0x0000000000000008
                    Offset:            0x00407618
                    Alignment:         0x00000002
                    Relocation offset: 0x00000000
                    Relocation count:  0x00000000
                    Flags:             S_REGULAR
                }
                Section64:
                {
                    Section:           __objc_const
                    Segment:           __DATA
                    Address:           0x0000000000407620
                    Size:              0x0000000000096820
                    Offset:            0x00407620
                    Alignment:         0x00000003
                    Relocation offset: 0x00000000
                    Relocation count:  0x00000000
                    Flags:             S_REGULAR
                }
                Section64:
                {
                    Section:           __objc_selrefs
                    Segment:           __DATA
                    Address:           0x000000000049DE40
                    Size:              0x000000000000B4F8
                    Offset:            0x0049DE40
                    Alignment:         0x00000003
                    Relocation offset: 0x00000000
                    Relocation count:  0x00000000
                    Flags:             S_LITERAL_POINTERS
                    {
                        S_ATTR_NO_DEAD_STRIP
                    }
                }
                Section64:
                {
                    Section:           __objc_protorefs
                    Segment:           __DATA
                    Address:           0x00000000004A9338
                    Size:              0x00000000000000B0
                    Offset:            0x004A9338
                    Alignment:         0x00000003
                    Relocation offset: 0x00000000
                    Relocation count:  0x00000000
                    Flags:             S_REGULAR
                }
                Section64:
                {
                    Section:           __objc_classrefs
                    Segment:           __DATA
                    Address:           0x00000000004A93E8
                    Size:              0x0000000000001718
                    Offset:            0x004A93E8
                    Alignment:         0x00000003
                    Relocation offset: 0x00000000
                    Relocation count:  0x00000000
                    Flags:             S_REGULAR
                    {
                        S_ATTR_NO_DEAD_STRIP
                    }
                }
                Section64:
                {
                    Section:           __objc_superrefs
                    Segment:           __DATA
                    Address:           0x00000000004AAB00
                    Size:              0x0000000000001278
                    Offset:            0x004AAB00
                    Alignment:         0x00000003
                    Relocation offset: 0x00000000
                    Relocation count:  0x00000000
                    Flags:             S_REGULAR
                    {
                        S_ATTR_NO_DEAD_STRIP
                    }
                }
                Section64:
                {
                    Section:           __objc_ivar
                    Segment:           __DATA
                    Address:           0x00000000004ABD78
                    Size:              0x0000000000004860
                    Offset:            0x004ABD78
                    Alignment:         0x00000003
                    Relocation offset: 0x00000000
                    Relocation count:  0x00000000
                    Flags:             S_REGULAR
                }
                Section64:
                {
                    Section:           __objc_data
                    Segment:           __DATA
                    Address:           0x00000000004B05D8
                    Size:              0x0000000000010040
                    Offset:            0x004B05D8
                    Alignment:         0x00000003
                    Relocation offset: 0x00000000
                    Relocation count:  0x00000000
                    Flags:             S_REGULAR
                }
                Section64:
                {
                    Section:           __data
                    Segment:           __DATA
                    Address:           0x00000000004C0620
                    Size:              0x0000000000002968
                    Offset:            0x004C0620
                    Alignment:         0x00000004
                    Relocation offset: 0x00000000
                    Relocation count:  0x00000000
                    Flags:             S_REGULAR
                }
                Section64:
                {
                    Section:           __crash_info
                    Segment:           __DATA
                    Address:           0x00000000004C2F88
                    Size:              0x0000000000000040
                    Offset:            0x004C2F88
                    Alignment:         0x00000003
                    Relocation offset: 0x00000000
                    Relocation count:  0x00000000
                    Flags:             S_REGULAR
                }
                Section64:
                {
                    Section:           __objc_arraydata
                    Segment:           __DATA
                    Address:           0x00000000004C2FC8
                    Size:              0x00000000000004A0
                    Offset:            0x004C2FC8
                    Alignment:         0x00000003
                    Relocation offset: 0x00000000
                    Relocation count:  0x00000000
                    Flags:             S_REGULAR
                }
                Section64:
                {
                    Section:           __objc_arrayobj
                    Segment:           __DATA
                    Address:           0x00000000004C3468
                    Size:              0x00000000000001C8
                    Offset:            0x004C3468
                    Alignment:         0x00000003
                    Relocation offset: 0x00000000
                    Relocation count:  0x00000000
                    Flags:             S_REGULAR
                }
                Section64:
                {
                    Section:           __objc_intobj
                    Segment:           __DATA
                    Address:           0x00000000004C3630
                    Size:              0x00000000000008B8
                    Offset:            0x004C3630
                    Alignment:         0x00000003
                    Relocation offset: 0x00000000
                    Relocation count:  0x00000000
                    Flags:             S_REGULAR
                }
                Section64:
                {
                    Section:           __objc_dictobj
                    Segment:           __DATA
                    Address:           0x00000000004C3EE8
                    Size:              0x0000000000000028
                    Offset:            0x004C3EE8
                    Alignment:         0x00000003
                    Relocation offset: 0x00000000
                    Relocation count:  0x00000000
                    Flags:             S_REGULAR
                }
                Section64:
                {
                    Section:           __common
                    Segment:           __DATA
                    Address:           0x00000000004C3F10
                    Size:              0x0000000000000080
                    Offset:            0x00000000
                    Alignment:         0x00000003
                    Relocation offset: 0x00000000
                    Relocation count:  0x00000000
                    Flags:             S_ZEROFILL
                }
                Section64:
                {
                    Section:           __bss
                    Segment:           __DATA
                    Address:           0x00000000004C3F90
                    Size:              0x0000000000000FC0
                    Offset:            0x00000000
                    Alignment:         0x00000004
                    Relocation offset: 0x00000000
                    Relocation count:  0x00000000
                    Flags:             S_ZEROFILL
                }
            }
        }
        LC_SEGMENT_64:
        {
            Name:        __LINKEDIT
            VM address:  0x00000000004C5000
            VM size:     2.41 MB
            File offset: 0x00000000004C4000
            File size:   2.41 MB
            Max prot:    0x00000001
            Init prot:   0x00000001
            Flags:       0x00000000
        }
        LC_ID_DYLIB:           Foundation
        LC_DYLD_INFO_ONLY:
        {
            Rebase offset:       0x004C4000
            Rebase size:         0x000060A0
            Binding offset:      0x004CA0A0
            Binding size:        0x00003DE0
            Weak binding offset: 0x00000000
            Weak binding size:   0x00000000
            Lazy binding offset: 0x004CDE80
            Lazy binding size:   0x0000C4B0
            Export offset:       0x004DA330
            Export size:         0x000167F0
        }
        LC_SYMTAB:
        {
            Symbol offset: 0x00518DB0
            Symbol size:   0x00008439
            String offset: 0x005A0994
            String size:   0x0015D508
        }
        LC_DYSYMTAB:
        {
            Symbol offset: 0x00000000
            Symbol size:   0x00006FE4
            String offset: 0x00006FE4
            String size:   0x00000B7F
        }
        LC_UUID:               1FA28BAB-7296-3A9-8E1E-E62A7D233DB8
        LC_BUILD_VERSION:
        {
            Platform: macOS
            Min OS:   10.15.0
            SDK:      10.15.4
            Tools:
            {
                LD: 556.4.0
            }
        }
        LC_BUILD_VERSION:
        {
            Platform: Mac Catalyst
            Min OS:   13.4.0
            SDK:      13.4.0
            Tools:
            {
                LD: 556.4.0
            }
        }
        LC_SOURCE_VERSION:     1676.105.0.0.0
        LC_SEGMENT_SPLIT_INFO:
        {
            Data offset: 0x004F0B20
            Data size:   0x00022108
        }
        LC_REEXPORT_DYLIB:     libobjc.A.dylib
        LC_REEXPORT_DYLIB:     CoreFoundation
        LC_LOAD_DYLIB:         libauto.dylib
        LC_LOAD_DYLIB:         libfakelink.dylib
        LC_LOAD_DYLIB:         libcompression.dylib
        LC_LOAD_DYLIB:         DiskArbitration
        LC_LOAD_DYLIB:         libarchive.2.dylib
        LC_LOAD_DYLIB:         libDiagnosticMessagesClient.dylib
        LC_LOAD_DYLIB:         libicucore.A.dylib
        LC_LOAD_DYLIB:         libxml2.2.dylib
        LC_LOAD_DYLIB:         libz.1.dylib
        LC_LOAD_DYLIB:         SystemConfiguration
        LC_LOAD_DYLIB:         CoreServices
        LC_LOAD_DYLIB:         liblangid.dylib
        LC_LOAD_DYLIB:         IOKit
        LC_LOAD_DYLIB:         libCRFSuite.dylib
        LC_LOAD_DYLIB:         libSystem.B.dylib
        LC_LOAD_DYLIB:         CFNetwork
        LC_FUNCTION_STARTS:
        {
            Data offset: 0x00512C28
            Data size:   0x00005CC0
        }
        LC_DATA_IN_CODE:
        {
            Data offset: 0x005188E8
            Data size:   0x000004C8
        }
        LC_CODE_SIGNATURE:
        {
            Data offset: 0x006FDEA0
            Data size:   0x00012750
        }
    }
}

License

Project is released under the terms of the MIT License.

Repository Infos

Owner:          Jean-David Gadina - XS-Labs
Web:            www.xs-labs.com
Blog:           www.noxeos.com
Twitter:        @macmade
GitHub:         github.com/macmade
LinkedIn:       ch.linkedin.com/in/macmade/
StackOverflow:  stackoverflow.com/users/182676/macmade