Function at 0x640f50
Capabilities:
Read file on windows

Disassembly:
push r12
push rdi
push rsi
push rbx
sub rsp, 0x28
mov qword [rcx], 0
mov qword [rcx + 8], 0
mov qword [rcx + 0x10], 0
mov dword [rcx + 0x18], 0
mov rbx, rcx
mov r12, rdx
test rdx, rdx
je 0x6411b0
mov rcx, rdx
call sub.msvcrt.dll_strlen
mov rsi, rax
test rax, rax
je 0x6411b0
lea rcx, [rax + 1]
mov edx, 1
call sub.msvcrt.dll_calloc
mov qword [rbx], rax
mov rcx, rax
test rax, rax
je 0x641277
mov rdx, r12
mov r8, rsi
call sub.msvcrt.dll_memcpy
mov rcx, rax
lea rdx, [0x00773674]
call fcn.006419e0
mov r12, rax
test rax, rax
je 0x641090
xor edx, edx
mov r8d, 2
mov rcx, r12
call sub.msvcrt.dll_fseek
mov rcx, r12
call sub.msvcrt.dll_ftell
mov esi, eax
xor r8d, r8d
xor edx, edx
mov rcx, r12
call sub.msvcrt.dll_fseek
test esi, esi
js 0x641140
movsxd rdi, esi
mov rcx, rdi
call fcn.004155a0
mov qword [rbx + 8], rax
mov rcx, rax
test rax, rax
je 0x641190
mov rax, qword [0x00785730]
cmp byte [rax], 0
je 0x641160
mov r9, r12
mov r8d, 1
mov rdx, rdi
call sub.msvcrt.dll_fread
test rax, rax
je 0x6411ee
mov rcx, r12
call sub.msvcrt.dll_fclose
lea eax, [rsi - 0x11]
sub esi, 0x20
cmovs esi, eax
mov qword [rbx + 0x10], rdi
sar esi, 4
inc esi
mov dword [rbx + 0x18], esi
mov r8, qword [rbx]
lea rdx, str.Using_Verthash_data_file__s
mov ecx, 3
call fcn.0040aed0
xor eax, eax
add rsp, 0x28
pop rbx
pop rsi
pop rdi
pop r12
ret
mov rax, qword [0x00785680]
cmp qword [rax], 0
jne 0x6411d0
mov rax, qword [0x007857a0]
cmp byte [rax], 0
je 0x641214
lea rdx, str.Creating_default_verthash.dat_in_current_directory__this_will_take_several_minutes
mov ecx, 3
call fcn.0040aed0
mov ecx, 0x20
mov r12, qword [rbx]
call sub.msvcrt.dll_malloc
mov rsi, rax
test rax, rax
je 0x641290
mov r8, rax
mov edx, 0x20
lea rcx, str.Verthash_Proof_of_Space_Datafile
mov r9d, 0x20
call fcn.00642410
mov r8, rsi
mov rdx, r12
mov ecx, 0x11
call fcn.00640e50
test rax, rax
je 0x64125e
mov rcx, qword [rbx]
lea rdx, [0x00773674]
call fcn.006419e0
mov r12, rax
test rax, rax
je 0x641240
lea rdx, str.Verthash_data_file_created_successfully
mov ecx, 3
call fcn.0040aed0
jmp 0x640fdd
mov rcx, r12
call sub.msvcrt.dll_fclose
mov eax, 1
add rsp, 0x28
pop rbx
pop rsi
pop rdi
pop r12
ret
mov ecx, 4
lea rdx, str.Verthash_data_is_using_huge_pages
call fcn.0040aed0
mov rcx, qword [rbx + 8]
test rcx, rcx
jne 0x641037
mov rcx, r12
call sub.msvcrt.dll_fclose
mov eax, 2
jmp 0x641084
mov rcx, rdi
mov edx, 0x40
call qword [sym.imp.msvcrt.dll__aligned_malloc]
mov qword [rbx + 8], rax
mov rcx, rax
jmp 0x641175
lea rdx, str.Invalid_file_specification
mov ecx, 1
call fcn.0040aed0
mov eax, 0xffffffff
jmp 0x641084
mov r8, qword [rbx]
lea rdx, str.Verthash_data_file_not_found_or_invalid:__s
mov ecx, 1
call fcn.0040aed0
mov eax, 0xffffffff
jmp 0x641084
mov r8, qword [rbx]
lea rdx, str.File_system_error_reading__s
mov ecx, 1
call fcn.0040aed0
mov rcx, r12
call sub.msvcrt.dll_fclose
mov eax, 0xffffffff
jmp 0x641084
lea rdx, str.No_Verthash_data_file_specified_and_default_not_found
mov ecx, 1
call fcn.0040aed0
lea rdx, str.Add___verify_to_create_default_verthash.dat
mov ecx, 3
call fcn.0040aed0
mov eax, 0xffffffff
jmp 0x641084
mov r8, qword [rbx]
lea rdx, str.File_system_error_opening__s
mov ecx, 1
call fcn.0040aed0
mov eax, 0xffffffff
jmp 0x641084
lea rdx, str.Verthash_file_creation_failed
mov ecx, 1
call fcn.0040aed0
or eax, 0xffffffff
jmp 0x641084
lea rdx, str.Failed_to_allocate_memory_for_Verthash_data
mov ecx, 1
call fcn.0040aed0
or eax, 0xffffffff
jmp 0x641084
lea rdx, str.Verthash_data_memory_allocation_failed
mov ecx, 1
call fcn.0040aed0
or eax, 0xffffffff
jmp 0x641084