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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
- CALL *getchar
- 48 83 f8 ff # cmp rax,0xffffffffffffffff
- JE ._start.done
- 48 83 f8 20 # cmp rax,0x20
- JE ._start
- 48 83 f8 09 # cmp rax,0x9
- JE ._start
- 48 83 f8 0a # cmp rax,0xa
- JE ._start
- 48 83 f8 23 # cmp rax,0x23
- 0f 84 *skip_comment # je 600188 <skip_comment>
- CALL *hex_digit
- 48 c1 e0 04 # shl rax,0x4
- 48 89 05 *oct # mov QWORD PTR [rip+0xfc],rax # 6001ab <oct>
- CALL *getchar
- CALL *hex_digit
- 48 09 05 *oct # or QWORD PTR [rip+0xeb],rax # 6001ab <oct>
- 48 8b 05 *oct # mov rax,QWORD PTR [rip+0xe4] # 6001ab <oct>
- CALL *putchar
- JMP ._start
- :_start.done
- 48 c7 c0 3c 00 00 00 # mov rax,0x3c
- 48 c7 c2 00 00 00 00 # mov rdx,0x0
- SYSCALL
- :die
- 48 c7 c0 3c 00 00 00 # mov rax,0x3c
- 48 c7 c2 01 00 00 00 # mov rdx,0x1
- 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 *buf # lea rsi,[rip+0x4a] # 6000f5 <buf>
- 48 c7 c2 01 00 00 00 # mov rdx,0x1
- SYSCALL
- 48 83 f8 01 # cmp rax,0x1
- JNE .getchar.getchar_fail
- 48 c7 c0 00 00 00 00 # mov rax,0x0
- 8a 05 *buf # mov al,BYTE PTR [rip+0x2e] # 6000f5 <buf>
- RET
- :getchar.getchar_fail
- 48 c7 c0 ff ff ff ff # mov rax,0xffffffffffffffff
- RET
- :putchar
- 88 05 *buf # mov BYTE PTR [rip+0x1f],al # 6000f5 <buf>
- 48 c7 c0 01 00 00 00 # mov rax,0x1
- 48 c7 c7 01 00 00 00 # mov rdi,0x1
- 48 8d 35 *buf # lea rsi,[rip+0xa] # 6000f5 <buf>
- 48 c7 c2 01 00 00 00 # mov rdx,0x1
- SYSCALL
- RET
- :hex_digit
- 48 83 f8 30 # cmp rax,0x30
- 7c .hex_digit.next1 # jl 60015e <hex_digit.next1>
- 48 83 f8 39 # cmp rax,0x39
- 7f .hex_digit.next1 # jg 60015e <hex_digit.next1>
- 48 83 e8 30 # sub rax,0x30
- RET # ret
- :hex_digit.next1
- 48 83 f8 61 # cmp rax,0x61
- 7c .hex_digit.next2 # jl 60016f <hex_digit.next2>
- 48 83 f8 66 # cmp rax,0x66
- 7f .hex_digit.next2 # jg 60016f <hex_digit.next2>
- 48 83 e8 57 # sub rax,0x57
- RET # ret
- :hex_digit.next2
- 48 83 f8 41 # cmp rax,0x41
- JL *die # jl 6000de <die>
- 48 83 f8 46 # cmp rax,0x46
- JG #die # jg 6000de <die>
- 48 83 e8 37 # sub rax,0x37
- RET # ret
- :skip_comment
- CALL *getchar # call 6000ee <getchar>
- 48 83 f8 ff # cmp rax,0xffffffffffffffff
- 0f 84 *die # je 6000de <die>
- 48 83 f8 0a # cmp rax,0xa
- 0f 84 *start # je 600078 <_start>
- JMP .skip_comment # jmp 600188 <skip_comment>
- :buf
- 00 00 00 00 00 00 00 00
- :oct
- 00 00 00 00 00 00 00 00
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