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- ## ELF Header
- 7F 45 4C 46 ## e_ident[EI_MAG0-3] ELF's magic number
- 02 ## e_ident[EI_CLASS] Indicating 64 bit
- 01 ## e_ident[EI_DATA] Indicating little endianness
- 01 ## e_ident[EI_VERSION] Indicating original elf
- 00 ## e_ident[EI_OSABI] Set at 0 because none cares
- 00 ## e_ident[EI_ABIVERSION] See above
- 00 00 00 00 00 00 00 ## e_ident[EI_PAD]
- 02 00 ## e_type Indicating Executable
- 3E 00 ## e_machine Indicating AMD64
- 01 00 00 00 ## e_version Indicating original elf
- 78 00 60 00 00 00 00 00 ## e_entry Address of the entry point
- 40 00 00 00 00 00 00 00 ## e_phoff Address of program header table
- 00 00 00 00 00 00 00 00 ## e_shoff Address of section header table
- 00 00 00 00 ## e_flags
- 40 00 ## e_ehsize Indicating our 64 Byte header
- 38 00 ## e_phentsize size of a program header table
- 01 00 ## e_phnum number of entries in program table
- 00 00 ## e_shentsize size of a section header table
- 00 00 ## e_shnum number of entries in section table
- 00 00 ## e_shstrndx index of the section names
- ## Program Header table
- 01 00 00 00 ## p_type
- 06 00 00 00 ## Flags
- 00 00 00 00 00 00 00 00 ## p_offset
- 00 00 60 00 00 00 00 00 ## p_vaddr
- 00 00 60 00 00 00 00 00 ## Undefined
- 08 10 00 00 00 00 00 00 ## p_filesz
- 08 10 00 00 00 00 00 00 ## p_memsz
- 00 00 20 00 00 00 00 00 ## Required alignment
- :_start
- e8 61 00 00 00 # call 6000de <getchar>
- 48 83 f8 ff # cmp rax,0xffffffffffffffff
- 74 4b # je 6000ce <_start.done>
- 48 83 f8 20 # cmp rax,0x20
- 74 ef # je 600078 <_start>
- 48 83 f8 09 # cmp rax,0x9
- 74 e9 # je 600078 <_start>
- 48 83 f8 0a # cmp rax,0xa
- 74 e3 # je 600078 <_start>
- 48 83 f8 23 # cmp rax,0x23
- 0f 84 d1 00 00 00 # je 600170 <skip_comment>
- e8 99 00 00 00 # call 60013d <hex_digit>
- 48 c1 e0 04 # shl rax,0x4
- 48 89 05 f0 00 00 00 # mov QWORD PTR [rip+0xf0],rax # 60019f <oct>
- e8 2a 00 00 00 # call 6000de <getchar>
- e8 84 00 00 00 # call 60013d <hex_digit>
- 48 09 05 df 00 00 00 # or QWORD PTR [rip+0xdf],rax # 60019f <oct>
- 48 8b 05 d8 00 00 00 # mov rax,QWORD PTR [rip+0xd8] # 60019f <oct>
- e8 4c 00 00 00 # call 600118 <putchar>
- eb aa # jmp 600078 <_start>
- :_start.done
- 48 c7 c0 3c 00 00 00 # mov rax,0x3c
- 48 c7 c7 00 00 00 00 # mov rdi,0x0
- 0f 05 # syscall
- :getchar
- 48 c7 c0 00 00 00 00 # mov rax,0x0
- 48 c7 c7 00 00 00 00 # mov rdi,0x0
- 48 8d 35 a4 00 00 00 # lea rsi,[rip+0xa4] # 600197 <buf>
- 48 c7 c2 01 00 00 00 # mov rdx,0x1
- 0f 05 # syscall
- 48 83 f8 01 # cmp rax,0x1
- 75 0e # jne 600110 <getchar.getchar_fail>
- 48 c7 c0 00 00 00 00 # mov rax,0x0
- 8a 05 88 00 00 00 # mov al,BYTE PTR [rip+0x88] # 600197 <buf>
- c3 # ret
- :getchar.getchar_fail
- 48 c7 c0 ff ff ff ff # mov rax,0xffffffffffffffff
- c3 # ret
- :putchar
- 88 05 79 00 00 00 # mov BYTE PTR [rip+0x79],al # 600197 <buf>
- 48 c7 c0 01 00 00 00 # mov rax,0x1
- 48 c7 c7 01 00 00 00 # mov rdi,0x1
- 48 8d 35 64 00 00 00 # lea rsi,[rip+0x64] # 600197 <buf>
- 48 c7 c2 01 00 00 00 # mov rdx,0x1
- 0f 05 # syscall
- c3 # ret
- :hex_digit
- 48 83 f8 30 # cmp rax,0x30
- 7c 0b # jl 60014e <hex_digit.next1>
- 48 83 f8 39 # cmp rax,0x39
- 7f 05 # jg 60014e <hex_digit.next1>
- 48 83 e8 30 # sub rax,0x30
- c3 # ret
- :hex_digit.next1
- 48 83 f8 61 # cmp rax,0x61
- 7c 0b # jl 60015f <hex_digit.next2>
- 48 83 f8 66 # cmp rax,0x66
- 7f 05 # jg 60015f <hex_digit.next2>
- 48 83 e8 57 # sub rax,0x57
- c3 # ret
- :hex_digit.next2
- 48 83 f8 41 # cmp rax,0x41
- 7c 22 # jl 600187 <die>
- 48 83 f8 46 # cmp rax,0x46
- 7f 1c # jg 600187 <die>
- 48 83 e8 37 # sub rax,0x37
- c3 # ret
- :skip_comment
- e8 69 ff ff ff # call 6000de <getchar>
- 48 83 f8 ff # cmp rax,0xffffffffffffffff
- 74 0c # je 600187 <die>
- 48 83 f8 0a # cmp rax,0xa
- 0f 84 f3 fe ff ff # je 600078 <_start>
- eb e9 # jmp 600170 <skip_comment>
- :die
- 48 c7 c0 3c 00 00 00 # mov rax,0x3c
- 48 c7 c7 01 00 00 00 # mov rdi,0x1
- 0f 05 # syscall
- :buf 00 00 00 00 00 00 00 00
- :oct 00 00 00 00 00 00 00 00
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