Re-codesigning is broken with Big Sur 11.4

[ai212983]

It seems something is broken with latest Big Sur 11.4

Patching is just fine

❯ ./macbit -p src/Info.plist target/release/mytool

 / __(_)_ __  _ __  ___|   \ ___| |__ _  _ __ _ __ _| |_ | |
| (_ | | '  \| '  \/ -_) |) / -_) '_ \ || / _` / _` | ' \|_|
 \___|_|_|_|_|_|_|_\___|___/\___|_.__/\_,_\__, \__,_|_||_(_)
                                          |___/
              GimmeDebugah v0.3 - (c) fG!
------------------------------------------------------------
[DEBUG] Processing __PAGEZERO
[DEBUG] Processing __TEXT
[DEBUG] text offset is 68
[DEBUG] __text offset: 0x21a0 lowest: 0xffffffff
[DEBUG] __stubs offset: 0x142fb0 lowest: 0x21a0
[DEBUG] __stub_helper offset: 0x143280 lowest: 0x21a0
[DEBUG] __gcc_except_tab__TEXT offset: 0x143740 lowest: 0x21a0
[DEBUG] __const offset: 0x150220 lowest: 0x21a0
[DEBUG] __info_plist offset: 0x196638 lowest: 0x21a0
[DEBUG] __unwind_info offset: 0x1968f8 lowest: 0x21a0
[DEBUG] __eh_frame offset: 0x19bef0 lowest: 0x21a0
[DEBUG] Processing __DATA_CONST
[DEBUG] __got offset: 0x19c000 lowest: 0x21a0
[DEBUG] __const offset: 0x19c078 lowest: 0x21a0
[DEBUG] Processing __DATA
[DEBUG] data offset is 418
[DEBUG] __la_symbol_ptr offset: 0x1c4000 lowest: 0x21a0
[DEBUG] __data offset: 0x1c43c0 lowest: 0x21a0
[DEBUG] __thread_vars offset: 0x1c4850 lowest: 0x21a0
[DEBUG] __thread_data offset: 0x1c49b8 lowest: 0x21a0
[DEBUG] __thread_bss offset: 0x0 lowest: 0x21a0
[DEBUG] __bss offset: 0x0 lowest: 0x21a0
[DEBUG] __common offset: 0x0 lowest: 0x21a0
[DEBUG] Processing __LINKEDIT
[DEBUG] free offset: a20 new offset: d2f lowest offset: 21a0
[Macbit]free_offset before 0xa20
[Macbit]tmp->text_offset 0x68
[DEBUG] plist offset 1ee0 align 0
[Macbit]free_offset after 0xa20
Info.plist is injected, now you can re-codesign the target binary target/release/blemacd.patched
"codesign -s identity -f target/release/blemacd.patched"
Bye...

But re-codesigning is not:

❯ codesign -s "Self-signed Code Signing Certificate" -f target/release/mytool.patched
target/release/mytool.patched: object file format unrecognized, invalid, or unsuitable

Codesigning before patching works.

[hophacker]

OK, I'll take a look