一、去符号#

我们在做逆向的时候，App的符号都被去掉了，所以我们需要对符号进行符号恢复。去符号会使应用包更小。

动态库：保留全局符号

1.1 设置去符号的类型#

Deployment Postprocessing
- YES: 编译也去符号
- NO: 只在打包时去符号
Strip Style
- All Symbols
  - 所有符号
- Non-Global Symbols
  - 除了全局符号
- Debugging Symbols
  - 调试符号

1.2 去符号前后的MachO#

a.去符号之前#

b.去符号之后#

只剩下间接符号和一个全局、一个本地

1.3 函数的实现地址#

这里是函数的实现地址
- 间接符号的地址这里全是0，调用的时候会先去找桩
- 详情参考
去符号之前可以看到全局符和本地符号的地址

二、符号类型#

3.1 全局符号#

我们定义的基本都是全集符号

3.2 本地符号#

static 是本地符号

3.3 命令查看类型#

objdump --macho -t 你的macho文件名

1
SymbolBind:
2
SYMBOL TABLE:
3
0000000100005f18 l     F __TEXT,__text -[ViewController viewDidLoad]
4
0000000100005f88 l     F __TEXT,__text -[ViewController test]
5
0000000100005fd0 l     F __TEXT,__text -[AppDelegate application:didFinishLaunchingWithOptions:]
6
000000010000604c l     F __TEXT,__text -[AppDelegate application:configurationForConnectingSceneSession:options:]
7
000000010000614c l     F __TEXT,__text -[AppDelegate application:didDiscardSceneSessions:]
8
000000010000625c l     F __TEXT,__text -[SceneDelegate scene:willConnectToSession:options:]
9
00000001000062f8 l     F __TEXT,__text -[SceneDelegate sceneDidDisconnect:]
10
0000000100006344 l     F __TEXT,__text -[SceneDelegate sceneDidBecomeActive:]
11
0000000100006390 l     F __TEXT,__text -[SceneDelegate sceneWillResignActive:]
12
00000001000063dc l     F __TEXT,__text -[SceneDelegate sceneWillEnterForeground:]
13
0000000100006428 l     F __TEXT,__text -[SceneDelegate sceneDidEnterBackground:]
14
0000000100006474 l     F __TEXT,__text -[SceneDelegate window]
15
0000000100006498 l     F __TEXT,__text -[SceneDelegate setWindow:]
16
00000001000064d4 l     F __TEXT,__text -[SceneDelegate .cxx_destruct]
17
00000001000080c0  w    O __DATA_CONST,__objc_protolist __OBJC_LABEL_PROTOCOL_$_NSObject
18
00000001000080c8  w    O __DATA_CONST,__objc_protolist __OBJC_LABEL_PROTOCOL_$_UIApplicationDelegate
19
00000001000080d0  w    O __DATA_CONST,__objc_protolist __OBJC_LABEL_PROTOCOL_$_UISceneDelegate
20
00000001000080d8  w    O __DATA_CONST,__objc_protolist __OBJC_LABEL_PROTOCOL_$_UIWindowSceneDelegate
21
000000010000c068 l     O __DATA,__objc_const __OBJC_METACLASS_RO_$_ViewController
22
000000010000c0b0 l     O __DATA,__objc_const __OBJC_$_INSTANCE_METHODS_ViewController
23
000000010000c0e8 l     O __DATA,__objc_const __OBJC_CLASS_RO_$_ViewController
24
000000010000c130 l     O __DATA,__objc_const __OBJC_$_PROTOCOL_INSTANCE_METHODS_NSObject
25
000000010000c300 l     O __DATA,__objc_const __OBJC_$_PROTOCOL_INSTANCE_METHODS_OPT_NSObject
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000000010000c320 l     O __DATA,__objc_const __OBJC_$_PROP_LIST_NSObject
27
000000010000c368 l     O __DATA,__objc_const __OBJC_$_PROTOCOL_METHOD_TYPES_NSObject
28
000000010000c408 l     O __DATA,__objc_const __OBJC_$_PROTOCOL_REFS_UIApplicationDelegate
29
000000010000c420 l     O __DATA,__objc_const __OBJC_$_PROTOCOL_INSTANCE_METHODS_OPT_UIApplicationDelegate
30
000000010000c938 l     O __DATA,__objc_const __OBJC_$_PROP_LIST_UIApplicationDelegate
31
000000010000c950 l     O __DATA,__objc_const __OBJC_$_PROTOCOL_METHOD_TYPES_UIApplicationDelegate
32
000000010000cb00 l     O __DATA,__objc_const __OBJC_CLASS_PROTOCOLS_$_AppDelegate
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000000010000cb18 l     O __DATA,__objc_const __OBJC_METACLASS_RO_$_AppDelegate
34
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35
000000010000cbb0 l     O __DATA,__objc_const __OBJC_$_PROP_LIST_AppDelegate
36
000000010000cc08 l     O __DATA,__objc_const __OBJC_CLASS_RO_$_AppDelegate
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000000010000cc50 l     O __DATA,__objc_const __OBJC_$_PROTOCOL_INSTANCE_METHODS_NSObject
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000000010000ce20 l     O __DATA,__objc_const __OBJC_$_PROTOCOL_INSTANCE_METHODS_OPT_NSObject
39
000000010000ce40 l     O __DATA,__objc_const __OBJC_$_PROP_LIST_NSObject
40
000000010000ce88 l     O __DATA,__objc_const __OBJC_$_PROTOCOL_METHOD_TYPES_NSObject
41
000000010000cf28 l     O __DATA,__objc_const __OBJC_$_PROTOCOL_REFS_UISceneDelegate
42
000000010000cf40 l     O __DATA,__objc_const __OBJC_$_PROTOCOL_INSTANCE_METHODS_OPT_UISceneDelegate
43
000000010000d068 l     O __DATA,__objc_const __OBJC_$_PROTOCOL_METHOD_TYPES_UISceneDelegate
44
000000010000d0c8 l     O __DATA,__objc_const __OBJC_$_PROTOCOL_REFS_UIWindowSceneDelegate
45
000000010000d0e0 l     O __DATA,__objc_const __OBJC_$_PROTOCOL_INSTANCE_METHODS_OPT_UIWindowSceneDelegate
46
000000010000d160 l     O __DATA,__objc_const __OBJC_$_PROP_LIST_UIWindowSceneDelegate
47
000000010000d178 l     O __DATA,__objc_const __OBJC_$_PROTOCOL_METHOD_TYPES_UIWindowSceneDelegate
48
000000010000d1a0 l     O __DATA,__objc_const __OBJC_CLASS_PROTOCOLS_$_SceneDelegate
49
000000010000d1b8 l     O __DATA,__objc_const __OBJC_METACLASS_RO_$_SceneDelegate
50
000000010000d200 l     O __DATA,__objc_const __OBJC_$_INSTANCE_METHODS_SceneDelegate
51
000000010000d2e0 l     O __DATA,__objc_const __OBJC_$_INSTANCE_VARIABLES_SceneDelegate
52
000000010000d308 l     O __DATA,__objc_const __OBJC_$_PROP_LIST_SceneDelegate
53
000000010000d360 l     O __DATA,__objc_const __OBJC_CLASS_RO_$_SceneDelegate
54
000000010000d3e0 l     O __DATA,__objc_ivar _OBJC_IVAR_$_SceneDelegate._window
55
000000010000d4d8 l     O __DATA,__data __dyld_private
56
000000010000d4e0  w    O __DATA,__data __OBJC_PROTOCOL_$_NSObject
57
000000010000d540  w    O __DATA,__data __OBJC_PROTOCOL_$_UIApplicationDelegate
58
000000010000d5a0  w    O __DATA,__data __OBJC_PROTOCOL_$_UISceneDelegate
59
000000010000d600  w    O __DATA,__data __OBJC_PROTOCOL_$_UIWindowSceneDelegate
60
0000000000000000      d  *UND* /Users/RyukieW/RyukieSamaProject/Study/逆向/Code/SymbolBind/SymbolBind/
61
0000000000000000      d  *UND* ViewController.m
62
0000000060a0b161      d  *UND* /Users/RyukieW/Library/Developer/Xcode/DerivedData/SymbolBind-bhluvjpsukewfxgsouyiwqlmcntk/Build/Intermediates.noindex/SymbolBind.build/Debug-iphoneos/SymbolBind.build/Objects-normal/arm64/ViewController.o
63
0000000100005f18      d  *UND*
64
0000000100005f18      d  *UND* -[ViewController viewDidLoad]
65
0000000000000070      d  *UND*
66
0000000000000070      d  *UND*
67
0000000100005f88      d  *UND*
68
0000000100005f88      d  *UND* -[ViewController test]
69
000000000000002c      d  *UND*
70
000000000000002c      d  *UND*
71
0000000100005fb4      d  *UND*
72
0000000100005fb4      d  *UND* _testLocalFunction
73
000000000000001c      d  *UND*
74
000000000000001c      d  *UND*
75
000000010000c068      d  *UND* __OBJC_METACLASS_RO_$_ViewController
76
000000010000c0b0      d  *UND* __OBJC_$_INSTANCE_METHODS_ViewController
77
000000010000c0e8      d  *UND* __OBJC_CLASS_RO_$_ViewController
78
0000000000000000      d  *UND* _OBJC_CLASS_$_ViewController
79
0000000000000000      d  *UND* _OBJC_METACLASS_$_ViewController
80
0000000000000000      d  *UND*
81
0000000000000000      d  *UND* /Users/RyukieW/RyukieSamaProject/Study/逆向/Code/SymbolBind/SymbolBind/
82
0000000000000000      d  *UND* AppDelegate.m
83
0000000060a0b161      d  *UND* /Users/RyukieW/Library/Developer/Xcode/DerivedData/SymbolBind-bhluvjpsukewfxgsouyiwqlmcntk/Build/Intermediates.noindex/SymbolBind.build/Debug-iphoneos/SymbolBind.build/Objects-normal/arm64/AppDelegate.o
84
0000000100005fd0      d  *UND*
85
0000000100005fd0      d  *UND* -[AppDelegate application:didFinishLaunchingWithOptions:]
86
000000000000007c      d  *UND*
87
000000000000007c      d  *UND*
88
000000010000604c      d  *UND*
89
000000010000604c      d  *UND* -[AppDelegate application:configurationForConnectingSceneSession:options:]
90
0000000000000100      d  *UND*
91
0000000000000100      d  *UND*
92
000000010000614c      d  *UND*
93
000000010000614c      d  *UND* -[AppDelegate application:didDiscardSceneSessions:]
94
0000000000000074      d  *UND*
95
0000000000000074      d  *UND*
96
0000000000000000      d  *UND* __OBJC_LABEL_PROTOCOL_$_NSObject
97
0000000000000000      d  *UND* __OBJC_LABEL_PROTOCOL_$_UIApplicationDelegate
98
000000010000c130      d  *UND* __OBJC_$_PROTOCOL_INSTANCE_METHODS_NSObject
99
000000010000c300      d  *UND* __OBJC_$_PROTOCOL_INSTANCE_METHODS_OPT_NSObject
100
000000010000c320      d  *UND* __OBJC_$_PROP_LIST_NSObject
101
000000010000c368      d  *UND* __OBJC_$_PROTOCOL_METHOD_TYPES_NSObject
102
000000010000c408      d  *UND* __OBJC_$_PROTOCOL_REFS_UIApplicationDelegate
103
000000010000c420      d  *UND* __OBJC_$_PROTOCOL_INSTANCE_METHODS_OPT_UIApplicationDelegate
104
000000010000c938      d  *UND* __OBJC_$_PROP_LIST_UIApplicationDelegate
105
000000010000c950      d  *UND* __OBJC_$_PROTOCOL_METHOD_TYPES_UIApplicationDelegate
106
000000010000cb00      d  *UND* __OBJC_CLASS_PROTOCOLS_$_AppDelegate
107
000000010000cb18      d  *UND* __OBJC_METACLASS_RO_$_AppDelegate
108
000000010000cb60      d  *UND* __OBJC_$_INSTANCE_METHODS_AppDelegate
109
000000010000cbb0      d  *UND* __OBJC_$_PROP_LIST_AppDelegate
110
000000010000cc08      d  *UND* __OBJC_CLASS_RO_$_AppDelegate
111
0000000000000000      d  *UND* _OBJC_METACLASS_$_AppDelegate
112
0000000000000000      d  *UND* _OBJC_CLASS_$_AppDelegate
113
0000000000000000      d  *UND* __OBJC_PROTOCOL_$_NSObject
114
0000000000000000      d  *UND* __OBJC_PROTOCOL_$_UIApplicationDelegate
115
0000000000000000      d  *UND*
116
0000000000000000      d  *UND* /Users/RyukieW/RyukieSamaProject/Study/逆向/Code/SymbolBind/SymbolBind/
117
0000000000000000      d  *UND* main.m
118
0000000060a0b161      d  *UND* /Users/RyukieW/Library/Developer/Xcode/DerivedData/SymbolBind-bhluvjpsukewfxgsouyiwqlmcntk/Build/Intermediates.noindex/SymbolBind.build/Debug-iphoneos/SymbolBind.build/Objects-normal/arm64/main.o
119
00000001000061c0      d  *UND*
120
00000001000061c0      d  *UND* _main
121
000000000000009c      d  *UND*
122
000000000000009c      d  *UND*
123
0000000000000000      d  *UND*
124
0000000000000000      d  *UND* /Users/RyukieW/RyukieSamaProject/Study/逆向/Code/SymbolBind/SymbolBind/
125
0000000000000000      d  *UND* SceneDelegate.m
126
0000000060a0b161      d  *UND* /Users/RyukieW/Library/Developer/Xcode/DerivedData/SymbolBind-bhluvjpsukewfxgsouyiwqlmcntk/Build/Intermediates.noindex/SymbolBind.build/Debug-iphoneos/SymbolBind.build/Objects-normal/arm64/SceneDelegate.o
127
000000010000625c      d  *UND*
128
000000010000625c      d  *UND* -[SceneDelegate scene:willConnectToSession:options:]
129
000000000000009c      d  *UND*
130
000000000000009c      d  *UND*
131
00000001000062f8      d  *UND*
132
00000001000062f8      d  *UND* -[SceneDelegate sceneDidDisconnect:]
133
000000000000004c      d  *UND*
134
000000000000004c      d  *UND*
135
0000000100006344      d  *UND*
136
0000000100006344      d  *UND* -[SceneDelegate sceneDidBecomeActive:]
137
000000000000004c      d  *UND*
138
000000000000004c      d  *UND*
139
0000000100006390      d  *UND*
140
0000000100006390      d  *UND* -[SceneDelegate sceneWillResignActive:]
141
000000000000004c      d  *UND*
142
000000000000004c      d  *UND*
143
00000001000063dc      d  *UND*
144
00000001000063dc      d  *UND* -[SceneDelegate sceneWillEnterForeground:]
145
000000000000004c      d  *UND*
146
000000000000004c      d  *UND*
147
0000000100006428      d  *UND*
148
0000000100006428      d  *UND* -[SceneDelegate sceneDidEnterBackground:]
149
000000000000004c      d  *UND*
150
000000000000004c      d  *UND*
151
0000000100006474      d  *UND*
152
0000000100006474      d  *UND* -[SceneDelegate window]
153
0000000000000024      d  *UND*
154
0000000000000024      d  *UND*
155
0000000100006498      d  *UND*
156
0000000100006498      d  *UND* -[SceneDelegate setWindow:]
157
000000000000003c      d  *UND*
158
000000000000003c      d  *UND*
159
00000001000064d4      d  *UND*
160
00000001000064d4      d  *UND* -[SceneDelegate .cxx_destruct]
161
000000000000003c      d  *UND*
162
000000000000003c      d  *UND*
163
0000000000000000      d  *UND* __OBJC_LABEL_PROTOCOL_$_UISceneDelegate
164
0000000000000000      d  *UND* __OBJC_LABEL_PROTOCOL_$_UIWindowSceneDelegate
165
000000010000cc50      d  *UND* __OBJC_$_PROTOCOL_INSTANCE_METHODS_NSObject
166
000000010000ce20      d  *UND* __OBJC_$_PROTOCOL_INSTANCE_METHODS_OPT_NSObject
167
000000010000ce40      d  *UND* __OBJC_$_PROP_LIST_NSObject
168
000000010000ce88      d  *UND* __OBJC_$_PROTOCOL_METHOD_TYPES_NSObject
169
000000010000cf28      d  *UND* __OBJC_$_PROTOCOL_REFS_UISceneDelegate
170
000000010000cf40      d  *UND* __OBJC_$_PROTOCOL_INSTANCE_METHODS_OPT_UISceneDelegate
171
000000010000d068      d  *UND* __OBJC_$_PROTOCOL_METHOD_TYPES_UISceneDelegate
172
000000010000d0c8      d  *UND* __OBJC_$_PROTOCOL_REFS_UIWindowSceneDelegate
173
000000010000d0e0      d  *UND* __OBJC_$_PROTOCOL_INSTANCE_METHODS_OPT_UIWindowSceneDelegate
174
000000010000d160      d  *UND* __OBJC_$_PROP_LIST_UIWindowSceneDelegate
175
000000010000d178      d  *UND* __OBJC_$_PROTOCOL_METHOD_TYPES_UIWindowSceneDelegate
176
000000010000d1a0      d  *UND* __OBJC_CLASS_PROTOCOLS_$_SceneDelegate
177
000000010000d1b8      d  *UND* __OBJC_METACLASS_RO_$_SceneDelegate
178
000000010000d200      d  *UND* __OBJC_$_INSTANCE_METHODS_SceneDelegate
179
000000010000d2e0      d  *UND* __OBJC_$_INSTANCE_VARIABLES_SceneDelegate
180
000000010000d308      d  *UND* __OBJC_$_PROP_LIST_SceneDelegate
181
000000010000d360      d  *UND* __OBJC_CLASS_RO_$_SceneDelegate
182
0000000000000000      d  *UND* _OBJC_IVAR_$_SceneDelegate._window
183
0000000000000000      d  *UND* _OBJC_METACLASS_$_SceneDelegate
184
0000000000000000      d  *UND* _OBJC_CLASS_$_SceneDelegate
185
0000000000000000      d  *UND* __OBJC_PROTOCOL_$_UISceneDelegate
186
0000000000000000      d  *UND* __OBJC_PROTOCOL_$_UIWindowSceneDelegate
187
0000000000000000      d  *UND*
188
000000010000d460 g     O __DATA,__objc_data _OBJC_CLASS_$_AppDelegate
189
000000010000d4b0 g     O __DATA,__objc_data _OBJC_CLASS_$_SceneDelegate
190
000000010000d3e8 g     O __DATA,__objc_data _OBJC_CLASS_$_ViewController
191
000000010000d438 g     O __DATA,__objc_data _OBJC_METACLASS_$_AppDelegate
192
000000010000d488 g     O __DATA,__objc_data _OBJC_METACLASS_$_SceneDelegate
193
000000010000d410 g     O __DATA,__objc_data _OBJC_METACLASS_$_ViewController
194
0000000100000000 g     F __TEXT,__text __mh_execute_header
195
00000001000061c0 g     F __TEXT,__text _main
196
0000000100005fb4 g     F __TEXT,__text _testLocalFunction
197
0000000000000000         *UND* _NSLog
198
0000000000000000         *UND* _NSStringFromClass
199
0000000000000000         *UND* _OBJC_CLASS_$_UIResponder
200
0000000000000000         *UND* _OBJC_CLASS_$_UISceneConfiguration
201
0000000000000000         *UND* _OBJC_CLASS_$_UIViewController
202
0000000000000000         *UND* _OBJC_METACLASS_$_NSObject
203
0000000000000000         *UND* _OBJC_METACLASS_$_UIResponder
204
0000000000000000         *UND* _OBJC_METACLASS_$_UIViewController
205
0000000000000000         *UND* _UIApplicationMain
206
0000000000000000         *UND* ___CFConstantStringClassReference
207
0000000000000000         *UND* __objc_empty_cache
208
0000000000000000         *UND* _objc_alloc
209
0000000000000000         *UND* _objc_autoreleasePoolPop
210
0000000000000000         *UND* _objc_autoreleasePoolPush
211
0000000000000000         *UND* _objc_autoreleaseReturnValue
212
0000000000000000         *UND* _objc_msgSend
213
0000000000000000         *UND* _objc_msgSendSuper2
214
0000000000000000         *UND* _objc_opt_class
215
0000000000000000         *UND* _objc_release
216
0000000000000000         *UND* _objc_retainAutoreleasedReturnValue
217
0000000000000000         *UND* _objc_storeStrong
218
0000000000000000         *UND* dyld_stub_binder
219
➜  11 clear
220
➜  11 objdump --macho -t SymbolBind
221
SymbolBind:
222
SYMBOL TABLE:
223
0000000100005f10 l     F __TEXT,__text -[ViewController viewDidLoad]
224
0000000100005f80 l     F __TEXT,__text -[ViewController test]
225
0000000100005fc8 l     F __TEXT,__text -[AppDelegate application:didFinishLaunchingWithOptions:]
226
0000000100006044 l     F __TEXT,__text -[AppDelegate application:configurationForConnectingSceneSession:options:]
227
0000000100006144 l     F __TEXT,__text -[AppDelegate application:didDiscardSceneSessions:]
228
0000000100006254 l     F __TEXT,__text -[SceneDelegate scene:willConnectToSession:options:]
229
00000001000062f0 l     F __TEXT,__text -[SceneDelegate sceneDidDisconnect:]
230
000000010000633c l     F __TEXT,__text -[SceneDelegate sceneDidBecomeActive:]
231
0000000100006388 l     F __TEXT,__text -[SceneDelegate sceneWillResignActive:]
232
00000001000063d4 l     F __TEXT,__text -[SceneDelegate sceneWillEnterForeground:]
233
0000000100006420 l     F __TEXT,__text -[SceneDelegate sceneDidEnterBackground:]
234
000000010000646c l     F __TEXT,__text -[SceneDelegate window]
235
0000000100006490 l     F __TEXT,__text -[SceneDelegate setWindow:]
236
00000001000064cc l     F __TEXT,__text -[SceneDelegate .cxx_destruct]
237
00000001000080c0  w    O __DATA_CONST,__objc_protolist __OBJC_LABEL_PROTOCOL_$_NSObject
238
00000001000080c8  w    O __DATA_CONST,__objc_protolist __OBJC_LABEL_PROTOCOL_$_UIApplicationDelegate
239
00000001000080d0  w    O __DATA_CONST,__objc_protolist __OBJC_LABEL_PROTOCOL_$_UISceneDelegate
240
00000001000080d8  w    O __DATA_CONST,__objc_protolist __OBJC_LABEL_PROTOCOL_$_UIWindowSceneDelegate
241
000000010000c068 l     O __DATA,__objc_const __OBJC_METACLASS_RO_$_ViewController
242
000000010000c0b0 l     O __DATA,__objc_const __OBJC_$_INSTANCE_METHODS_ViewController
243
000000010000c0e8 l     O __DATA,__objc_const __OBJC_CLASS_RO_$_ViewController
244
000000010000c130 l     O __DATA,__objc_const __OBJC_$_PROTOCOL_INSTANCE_METHODS_NSObject
245
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246
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247
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248
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249
000000010000c420 l     O __DATA,__objc_const __OBJC_$_PROTOCOL_INSTANCE_METHODS_OPT_UIApplicationDelegate
250
000000010000c938 l     O __DATA,__objc_const __OBJC_$_PROP_LIST_UIApplicationDelegate
251
000000010000c950 l     O __DATA,__objc_const __OBJC_$_PROTOCOL_METHOD_TYPES_UIApplicationDelegate
252
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253
000000010000cb18 l     O __DATA,__objc_const __OBJC_METACLASS_RO_$_AppDelegate
254
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255
000000010000cbb0 l     O __DATA,__objc_const __OBJC_$_PROP_LIST_AppDelegate
256
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257
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258
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259
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260
000000010000ce88 l     O __DATA,__objc_const __OBJC_$_PROTOCOL_METHOD_TYPES_NSObject
261
000000010000cf28 l     O __DATA,__objc_const __OBJC_$_PROTOCOL_REFS_UISceneDelegate
262
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263
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264
000000010000d0c8 l     O __DATA,__objc_const __OBJC_$_PROTOCOL_REFS_UIWindowSceneDelegate
265
000000010000d0e0 l     O __DATA,__objc_const __OBJC_$_PROTOCOL_INSTANCE_METHODS_OPT_UIWindowSceneDelegate
266
000000010000d160 l     O __DATA,__objc_const __OBJC_$_PROP_LIST_UIWindowSceneDelegate
267
000000010000d178 l     O __DATA,__objc_const __OBJC_$_PROTOCOL_METHOD_TYPES_UIWindowSceneDelegate
268
000000010000d1a0 l     O __DATA,__objc_const __OBJC_CLASS_PROTOCOLS_$_SceneDelegate
269
000000010000d1b8 l     O __DATA,__objc_const __OBJC_METACLASS_RO_$_SceneDelegate
270
000000010000d200 l     O __DATA,__objc_const __OBJC_$_INSTANCE_METHODS_SceneDelegate
271
000000010000d2e0 l     O __DATA,__objc_const __OBJC_$_INSTANCE_VARIABLES_SceneDelegate
272
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273
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274
000000010000d3e0 l     O __DATA,__objc_ivar _OBJC_IVAR_$_SceneDelegate._window
275
000000010000d4d8 l     O __DATA,__data __dyld_private
276
000000010000d4e0  w    O __DATA,__data __OBJC_PROTOCOL_$_NSObject
277
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l
- 本地符号
g
- 全局符号

三、恢复符号表的线索#

虽然符号表中没有了符号，但是在MachO中的类的方法列表中还是有的！

3.1 类名#

在TEXT段__objc_classname中：

3.2 方法名#

在TEXT段__objc_methname中：

四、符号表恢复#

4.1 脚本#

GitHub: restore-symbol

将MachO文件放入目录中
执行脚本./restore-symbol MachO文件名 -o MachO输出文件名

1
=========== Start =============
2
2021-05-16 15:11:40.712 restore-symbol[97858:6671327] Unknown load command: 0x00000032
3
Scan OC method in mach-o-file.
4
Scan OC method finish.
5
=========== Finish ============

在用MachOView查看符号表，发现在后面已经恢复了！
- 严谨的说是添加了符号
- 由于是基于Runtime的，动态派发的可以恢复。
对比发现文件大小也增大了