97 lines
6.5 KiB
Markdown
97 lines
6.5 KiB
Markdown
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# patch prl_client_app
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## 1. patch /usr/bin/codesign verify
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find string xref to "/usr/bin/codesign"
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### x86_64
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```
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__text:000000010093B8D0 55 push rbp
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__text:000000010093B8D1 48 89 E5 mov rbp, rsp
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__text:000000010093B8D4 41 57 push r15
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__text:000000010093B8D6 41 56 push r14
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__text:000000010093B8D8 41 55 push r13
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__text:000000010093B8DA 41 54 push r12
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__text:000000010093B8DC 53 push rbx
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__text:000000010093B8DD 48 81 EC 38 04 00 00 sub rsp, 438h
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__text:000000010093B8E4 4C 89 85 B8 FB FF FF mov [rbp+var_448], r8
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__text:000000010093B8EB 48 89 8D B0 FB FF FF mov [rbp+var_450], rcx
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__text:000000010093B8F2 48 89 95 A8 FB FF FF mov [rbp+var_458], rdx
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__text:000000010093B8F9 41 89 F4 mov r12d, esi
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__text:000000010093B8FC 48 89 FB mov rbx, rdi
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__text:000000010093B8FF 48 8B 05 F2 91 B7 01 mov rax, cs:___stack_chk_guard_ptr
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__text:000000010093B906 48 8B 00 mov rax, [rax]
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__text:000000010093B909 48 89 45 D0 mov [rbp+var_30], rax
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__text:000000010093B90D 48 8B 0D AC D9 C6 01 mov rcx, cs:off_1025A92C0 ; "4C6364ACXT"
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__text:000000010093B914 48 8D 15 AC F2 18 00 lea rdx, aAnchorAppleGen_0 ; "=anchor apple generic and certificate l"...
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__text:000000010093B91B 45 31 F6 xor r14d, r14d
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__text:000000010093B91E 48 8D BD D0 FB FF FF lea rdi, [rbp+__str] ; __str
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__text:000000010093B925 BE 00 04 00 00 mov esi, 400h ; __size
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__text:000000010093B92A 31 C0 xor eax, eax
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__text:000000010093B92C E8 11 A0 01 00 call _snprintf
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__text:000000010093B931 48 C7 85 C0 FB FF FF 00+ mov [rbp+staticCode], 0
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__text:000000010093B931 00 00 00
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__text:000000010093B93C 48 8D 3D 72 F2 18 00 lea rdi, __file ; "/usr/bin/codesign"
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__text:000000010093B943 BE 01 00 00 00 mov esi, 1 ; int
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__text:000000010093B948 E8 73 9A 01 00 call _access
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__text:000000010093B94D 85 C0 test eax, eax
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__text:000000010093B94F 74 29 jz short loc_10093B97A
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```
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after
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```
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__text:000000010093B8D0 sub_10093B8D0 proc near ; CODE XREF: sub_10093B890+11↑j
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__text:000000010093B8D0 ; sub_10093B8B0+C↑j
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__text:000000010093B8D0 6A 01 push 1
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__text:000000010093B8D2 58 pop rax
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__text:000000010093B8D3 C3 retn
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__text:000000010093B8D3 sub_10093B8D0 endp
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```
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### arm64
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```
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__text:0000000100977800 FA 67 BB A9 STP X26, X25, [SP,#-0x10+var_40]!
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__text:0000000100977804 F8 5F 01 A9 STP X24, X23, [SP,#0x40+var_30]
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__text:0000000100977808 F6 57 02 A9 STP X22, X21, [SP,#0x40+var_20]
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__text:000000010097780C F4 4F 03 A9 STP X20, X19, [SP,#0x40+var_10]
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__text:0000000100977810 FD 7B 04 A9 STP X29, X30, [SP,#0x40+var_s0]
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__text:0000000100977814 FD 03 01 91 ADD X29, SP, #0x40
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__text:0000000100977818 FF 43 11 D1 SUB SP, SP, #0x450
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__text:000000010097781C F6 03 04 AA MOV X22, X4
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__text:0000000100977820 F7 03 03 AA MOV X23, X3
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__text:0000000100977824 F4 03 02 AA MOV X20, X2
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__text:0000000100977828 F5 03 01 AA MOV X21, X1
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__text:000000010097782C F3 03 00 AA MOV X19, X0
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__text:0000000100977830 48 DB 00 B0 ADRP X8, #___stack_chk_guard_ptr@PAGE
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__text:0000000100977834 08 69 45 F9 LDR X8, [X8,#___stack_chk_guard_ptr@PAGEOFF]
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__text:0000000100977838 08 01 40 F9 LDR X8, [X8]
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__text:000000010097783C A8 83 1B F8 STUR X8, [X29,#var_48]
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__text:0000000100977840 E8 E2 00 D0 ADRP X8, #off_1025D5358@PAGE ; "4C6364ACXT"
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__text:0000000100977844 08 AD 41 F9 LDR X8, [X8,#off_1025D5358@PAGEOFF] ; "4C6364ACXT"
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__text:0000000100977848 E8 03 00 F9 STR X8, [SP,#0x490+var_490]
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__text:000000010097784C C2 D9 00 F0 42 4C 3C 91 ADRL X2, aAnchorAppleGen_0 ; "=anchor apple generic and certificate l"...
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__text:0000000100977854 E0 23 01 91 ADD X0, SP, #0x490+__str ; __str
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__text:0000000100977858 01 80 80 52 MOV W1, #0x400 ; __size
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__text:000000010097785C E1 7D 00 94 BL _snprintf
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__text:0000000100977860 FF 1F 00 F9 STR XZR, [SP,#0x490+staticCode]
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__text:0000000100977864 C0 D9 00 F0 00 04 3C 91 ADRL X0, aUsrBinCodesign ; "/usr/bin/codesign"
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__text:000000010097786C 21 00 80 52 MOV W1, #1 ; int
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__text:0000000100977870 1B 7B 00 94 BL _access
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__text:0000000100977874 E0 01 00 34 CBZ W0, loc_1009778B0
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```
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after
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```
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__text:0000000100977800 sub_100977800 ; CODE XREF: sub_1009777DC+10↑j
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__text:0000000100977800 ; sub_1009777F0+C↑j
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__text:0000000100977800 20 00 80 D2 MOV X0, #1
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__text:0000000100977804 C0 03 5F D6 RET
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__text:0000000100977804 ; End of function sub_100977800
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```
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