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Type "apropos word" to search for commands related to "word"...
"/Users/persev/Desktop/oscp_gym/asm/./HelloWorld.asm": not in executable format: File format not recognized
(gdb) exit
Undefined command: "exit".  Try "help".
(gdb) quit
mlds-MacBook-Pro:asm persev$ disas HelloWorld
-bash: disas: command not found
mlds-MacBook-Pro:asm persev$ gdb HelloWorld
GNU gdb (GDB) 8.1
Copyright (C) 2018 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
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and "show warranty" for details.
This GDB was configured as "x86_64-apple-darwin17.3.0".
Type "show configuration" for configuration details.
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Reading symbols from HelloWorld...(no debugging symbols found)...done.
(gdb) disas main
Dump of assembler code for function main:
   0x0000000100000f96 <+0>: mov    $0x2000004,%eax
   0x0000000100000f9b <+5>: mov    $0x1,%edi
   0x0000000100000fa0 <+10>:    movabs $0x100001000,%rsi
   0x0000000100000faa <+20>:    mov    $0xd,%edx
   0x0000000100000faf <+25>:    syscall
   0x0000000100000fb1 <+27>:    mov    $0x2000001,%eax
   0x0000000100000fb6 <+32>:    syscall
End of assembler dump.
(gdb) disas -r main
No symbol table is loaded.  Use the "file" command.
(gdb) disas /r main
Dump of assembler code for function main:
   0x0000000100000f96 <+0>: b8 04 00 00 02  mov    $0x2000004,%eax
   0x0000000100000f9b <+5>: bf 01 00 00 00  mov    $0x1,%edi
   0x0000000100000fa0 <+10>:    48 be 00 10 00 00 01 00 00 00   movabs $0x100001000,%rsi
   0x0000000100000faa <+20>:    ba 0d 00 00 00  mov    $0xd,%edx
   0x0000000100000faf <+25>:    0f 05   syscall
   0x0000000100000fb1 <+27>:    b8 01 00 00 02  mov    $0x2000001,%eax
   0x0000000100000fb6 <+32>:    0f 05   syscall
End of assembler dump.
(gdb)