Function at 0x140047a70
Capabilities:
Validate payment card number using luhn algorithm

Disassembly:
mov qword [rsp + 8], rbx
mov qword [rsp + 0x10], rbp
mov qword [rsp + 0x18], rsi
mov qword [rsp + 0x20], rdi
push r12
push r14
push r15
sub rsp, 0x50
mov r14, qword [rsp + 0x98]
xor r12d, r12d
mov r15, r9
mov rbp, r8
mov rsi, rdx
mov rdi, rcx
mov qword [r14], r12
movzx eax, byte [rdx]
cmp al, 0xa
je 0x140047fe4
cmp al, 0xd
je 0x140047fe4
lea r14, [rcx + 0x13c]
mov ebx, 4
mov ecx, dword [r14]
mov r15d, 1
lea eax, [rcx + 1]
mov dword [r14], eax
test ecx, ecx
jne 0x140047eff
mov dword [rdi + 0x148], r12d
mov rax, qword [rdi + 0x18]
mov rcx, qword [rax + 0x3e0]
mov eax, dword [rcx + 0x8c]
test al, 3
je 0x140047c9d
movzx eax, byte [rdx]
mov rbx, rdx
test al, al
je 0x140047b1c
cmp al, 0x20
je 0x140047b11
cmp byte [rbx], 9
jne 0x140047b1c
movzx eax, byte [rbx + 1]
inc rbx
test al, al
jne 0x140047b08
mov r8d, 5
lea rdx, str.HTTP_
mov rcx, rbx
call sub.api_ms_win_crt_string_l1_1_0.dll_strncmp
test eax, eax
jne 0x140047bd5
movsx edx, byte [rbx + 5]
mov ecx, edx
sub ecx, 0x31
je 0x140047c05
sub ecx, r15d
je 0x140047b69
cmp ecx, r15d
je 0x140047b69
lea rdx, str.Unsupported_HTTP_version_in_response
mov rcx, rdi
call fcn.140030b00
mov eax, r15d
jmp 0x14004806d
movzx eax, byte [rbx + 6]
cmp al, 0x20
je 0x140047b75
cmp al, 9
jne 0x140047bd5
lea eax, [rdx - 0x30]
lea ecx, [rax + rax*4]
add ecx, ecx
mov dword [rdi + 0x148], ecx
movsx ecx, byte [rbx + 7]
lea eax, [rcx - 0x30]
cmp al, 9
ja 0x140047bd5
movsx edx, byte [rbx + 8]
lea eax, [rdx - 0x30]
cmp al, 9
ja 0x140047bd5
movsx r8d, byte [rbx + 9]
lea eax, [r8 - 0x30]
cmp al, 9
ja 0x140047bd5
lea ecx, [rcx + rcx*4]
lea ecx, [rdx + rcx*2]
lea ecx, [rcx + rcx*4]
lea ecx, [rcx - 0xa68]
lea ecx, [r8 + rcx*2]
mov dword [rdi + 0x14c], ecx
movzx eax, byte [rbx + 0xa]
cmp al, 0x20
je 0x140047d80
sub al, 9
cmp al, 4
jbe 0x140047d80
mov r8, rbp
mov rdx, rsi
mov rcx, rdi
call fcn.140046c30
cmp eax, r15d
jne 0x140047f2a
mov dword [rdi + 0x14c], 0xc8
mov dword [rdi + 0x148], 0xa
jmp 0x140047d80
cmp byte [rbx + 6], 0x2e
jne 0x140047c86
movsx ecx, byte [rbx + 7]
lea eax, [rcx - 0x30]
cmp al, r15b
ja 0x140047c86
movzx eax, byte [rbx + 8]
cmp al, 0x20
je 0x140047c23
cmp al, 9
jne 0x140047c86
lea eax, [rcx - 0x26]
mov dword [rdi + 0x148], eax
movsx ecx, byte [rbx + 9]
lea eax, [rcx - 0x30]
cmp al, 9
ja 0x140047c86
movsx edx, byte [rbx + 0xa]
lea eax, [rdx - 0x30]
cmp al, 9
ja 0x140047c86
movsx r8d, byte [rbx + 0xb]
lea eax, [r8 - 0x30]
cmp al, 9
ja 0x140047c86
lea ecx, [rcx + rcx*4]
lea ecx, [rdx + rcx*2]
lea ecx, [rcx + rcx*4]
lea ecx, [rcx - 0xa68]
lea ecx, [r8 + rcx*2]
mov dword [rdi + 0x14c], ecx
movzx eax, byte [rbx + 0xc]
cmp al, 0x20
je 0x140047d80
cmp al, 9
je 0x140047d80
sub al, 0xa
cmp al, 3
jbe 0x140047d80
lea rdx, str.Unsupported_HTTP_1_subversion_in_response
mov rcx, rdi
call fcn.140030b00
mov eax, r15d
jmp 0x14004806d
bt eax, 0x12
jae 0x140047f2a
movzx eax, byte [rdx]
mov rbx, rsi
test al, al
je 0x140047cc5
cmp al, 0x20
je 0x140047cba
cmp byte [rbx], 9
jne 0x140047cc5
movzx eax, byte [rbx + 1]
inc rbx
test al, al
jne 0x140047cb1
mov r8d, 5
lea rdx, str.RTSP_
mov rcx, rbx
call sub.api_ms_win_crt_string_l1_1_0.dll_strncmp
test eax, eax
jne 0x140047f2a
movzx eax, byte [rbx + 5]
sub al, 0x30
cmp al, 9
ja 0x140047f31
cmp byte [rbx + 6], 0x2e
jne 0x140047f31
movzx eax, byte [rbx + 7]
sub al, 0x30
cmp al, 9
ja 0x140047f31
movzx eax, byte [rbx + 8]
cmp al, 0x20
je 0x140047d18
cmp al, 9
jne 0x140047f31
movsx ecx, byte [rbx + 9]
lea eax, [rcx - 0x30]
cmp al, 9
ja 0x140047f31
movsx edx, byte [rbx + 0xa]
lea eax, [rdx - 0x30]
cmp al, 9
ja 0x140047f31
movsx r8d, byte [rbx + 0xb]
lea eax, [r8 - 0x30]
cmp al, 9
ja 0x140047f31
lea ecx, [rcx + rcx*4]
lea ecx, [rdx + rcx*2]
lea ecx, [rcx + rcx*4]
lea ecx, [rcx - 0xa68]
lea ecx, [r8 + rcx*2]
mov dword [rdi + 0x14c], ecx
movzx eax, byte [rbx + 0xc]
cmp al, 0x20
je 0x140047d76
cmp al, 9
je 0x140047d76
sub al, 0xa
cmp al, 3
ja 0x140047f31
mov dword [rdi + 0x148], sendto
mov r9d, dword [rdi + 0x148]
mov ecx, r9d
mov rbx, qword [rdi + 0x18]
sub ecx, 0xa
je 0x140047dd0
cmp ecx, r15d
je 0x140047dd0
mov eax, 0x66666667
mov rcx, rdi
imul r9d
mov r8d, edx
lea rdx, str.Unsupported_HTTP_version___u._d__in_response
sar r8d, 2
mov eax, r8d
shr eax, 0x1f
add r8d, eax
lea eax, [r8 + r8*4]
add eax, eax
sub r9d, eax
call fcn.140030b00
mov eax, r15d
jmp 0x14004806d
movzx eax, byte [rbx + 0x7e0]
test al, al
je 0x140047e1f
mov ecx, eax
mov eax, 0xcccccccd
mul ecx
mov eax, 0x66666667
mov r8d, edx
imul r9d
shr r8d, 3
mov r9d, edx
sar r9d, 2
mov eax, r9d
shr eax, 0x1f
add r9d, eax
cmp r9d, r8d
je 0x140047e1f
lea rdx, str.Version_mismatch__from_HTTP__u_to_HTTP__u_
mov rcx, rdi
call fcn.140030b00
mov eax, r15d
jmp 0x14004806d
mov eax, dword [rdi + 0x14c]
mov dword [rdi + 0x1388], eax
mov eax, dword [rdi + 0x148]
mov dword [rdi + 0x1390], eax
movzx eax, byte [rdi + 0x148]
mov byte [rbx + 0x7e0], al
movzx eax, byte [rdi + 0x1361]
test al, al
je 0x140047e57
cmp eax, dword [rdi + 0x148]
jle 0x140047e64
movzx eax, byte [rdi + 0x148]
mov byte [rdi + 0x1361], al
cmp qword [rdi + 0x1138], r12
je 0x140047e89
cmp byte [rdi + 0x1362], r12b
jne 0x140047e89
cmp dword [rdi + 0x14c], 0x1a0
jne 0x140047e89
mov byte [rdi + 0x1e3], r15b
cmp dword [rdi + 0x148], 0xa
jne 0x140047eac
lea rdx, str.HTTP_1.0__assume_close_after_body
mov rcx, rdi
call fcn.140030bf0
mov edx, r15d
mov rcx, rbx
call fcn.1400339f0
mov ecx, dword [rdi + 0x14c]
lea eax, [rcx - 0x64]
cmp eax, 0x63
setbe al
mov byte [rdi + 0x1e4], al
sub ecx, 0xcc
je 0x140047ede
cmp ecx, 0x64
jne 0x140047ef3
cmp byte [rdi + 0x538], r12b
je 0x140047ede
mov byte [rdi + 0x1464], r15b
mov qword [rdi + 0x100], r12
mov qword [rdi + 0x108], r12
mov byte [rdi + 0x1e4], r15b
mov ebx, ntohs
lea r14, [rdi + 0x13c]
mov r8, rbp
xor edx, edx
mov rcx, rsi
call sub.VCRUNTIME140.dll_memchr
test rax, rax
je 0x140047f3b
lea rdx, str.Nul_byte_in_header
mov rcx, rdi
mov ebx, 8
call fcn.140030b00
jmp 0x14004806b
mov byte [rdi + 0x1d9], r12b
mov eax, 8
jmp 0x14004806d
mov ecx, dword [r14]
cmp ecx, 2
jl 0x140047f81
movzx eax, byte [rsi]
cmp al, 0x20
je 0x140047f4e
cmp al, 9
jne 0x140047f53
cmp ecx, 2
jg 0x140047f81
mov r8, rbp
mov edx, 0x3a
mov rcx, rsi
call sub.VCRUNTIME140.dll_memchr
test rax, rax
jne 0x140047f81
lea rdx, str.Header_without_colon
mov rcx, rdi
mov ebx, 8
call fcn.140030b00
jmp 0x14004806b
mov r8, rbp
mov rdx, rsi
mov rcx, rdi
call fcn.140045040
test eax, eax
jne 0x14004806d
mov r9, rbp
mov r8, rsi
mov edx, r15d
mov rcx, rdi
call fcn.140030a10
mov eax, dword [rdi + 0x14c]
sub eax, 0x64
cmp eax, 0x64
jae 0x140047fb9
or ebx, 0x20
mov r9, rbp
mov r8, rsi
mov edx, ebx
mov rcx, rdi
call fcn.140032020
test eax, eax
jne 0x14004806d
xor r8d, r8d
mov rdx, rbp
mov rcx, rdi
call fcn.140044500
jmp 0x14004806d
lea rdx, [r8 + 1]
lea rcx, [rsp + 0x30]
call fcn.140021740
mov r8, rbp
lea rcx, [rsp + 0x30]
mov rdx, rsi
call fcn.140021700
test eax, eax
jne 0x14004806d
lea rcx, [rdi + 0xc70]
call fcn.140021760
lea rcx, [rsp + 0x30]
call fcn.14001f380
lea rcx, [rsp + 0x30]
mov rbx, rax
call fcn.14001f2d0
mov rcx, qword [rsp + 0x90]
mov rdx, rax
lea rax, [rsp + 0x98]
mov r9, r15
mov qword [rsp + 0x28], rax
mov r8, rbx
mov qword [rsp + 0x20], rcx
mov rcx, rdi
call fcn.140046d70
mov rcx, qword [rsp + 0x98]
mov ebx, eax
add qword [r14], rcx
lea rcx, [rsp + 0x30]
call fcn.140021710
mov eax, ebx
lea r11, [rsp + 0x50]
mov rbx, qword [r11 + 0x20]
mov rbp, qword [r11 + 0x28]
mov rsi, qword [r11 + 0x30]
mov rdi, qword [r11 + 0x38]
mov rsp, r11
pop r15
pop r14
pop r12
ret