Function at 0x18010c270
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 0x18010c7e4
cmp al, 0xd
je 0x18010c7e4
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 0x18010c6ff
mov dword [rdi + 0x148], r12d
mov rax, qword [rdi + 0x18]
mov rcx, qword [rax + 0x3e0]
mov eax, dword [rcx + 0x8c]
test al, 3
je 0x18010c49d
movzx eax, byte [rdx]
mov rbx, rdx
test al, al
je 0x18010c31c
cmp al, 0x20
je 0x18010c311
cmp byte [rbx], 9
jne 0x18010c31c
movzx eax, byte [rbx + 1]
inc rbx
test al, al
jne 0x18010c308
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 0x18010c3d5
movsx edx, byte [rbx + 5]
mov ecx, edx
sub ecx, 0x31
je 0x18010c405
sub ecx, r15d
je 0x18010c369
cmp ecx, r15d
je 0x18010c369
lea rdx, str.Unsupported_HTTP_version_in_response
mov rcx, rdi
call fcn.1800f97e0
mov eax, r15d
jmp 0x18010c86d
movzx eax, byte [rbx + 6]
cmp al, 0x20
je 0x18010c375
cmp al, 9
jne 0x18010c3d5
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 0x18010c3d5
movsx edx, byte [rbx + 8]
lea eax, [rdx - 0x30]
cmp al, 9
ja 0x18010c3d5
movsx r8d, byte [rbx + 9]
lea eax, [r8 - 0x30]
cmp al, 9
ja 0x18010c3d5
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 0x18010c580
sub al, 9
cmp al, 4
jbe 0x18010c580
mov r8, rbp
mov rdx, rsi
mov rcx, rdi
call fcn.18010b430
cmp eax, r15d
jne 0x18010c72a
mov dword [rdi + 0x14c], 0xc8
mov dword [rdi + 0x148], 0xa
jmp 0x18010c580
cmp byte [rbx + 6], 0x2e
jne 0x18010c486
movsx ecx, byte [rbx + 7]
lea eax, [rcx - 0x30]
cmp al, r15b
ja 0x18010c486
movzx eax, byte [rbx + 8]
cmp al, 0x20
je 0x18010c423
cmp al, 9
jne 0x18010c486
lea eax, [rcx - 0x26]
mov dword [rdi + 0x148], eax
movsx ecx, byte [rbx + 9]
lea eax, [rcx - 0x30]
cmp al, 9
ja 0x18010c486
movsx edx, byte [rbx + 0xa]
lea eax, [rdx - 0x30]
cmp al, 9
ja 0x18010c486
movsx r8d, byte [rbx + 0xb]
lea eax, [r8 - 0x30]
cmp al, 9
ja 0x18010c486
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 0x18010c580
cmp al, 9
je 0x18010c580
sub al, 0xa
cmp al, 3
jbe 0x18010c580
lea rdx, str.Unsupported_HTTP_1_subversion_in_response
mov rcx, rdi
call fcn.1800f97e0
mov eax, r15d
jmp 0x18010c86d
bt eax, 0x12
jae 0x18010c72a
movzx eax, byte [rdx]
mov rbx, rsi
test al, al
je 0x18010c4c5
cmp al, 0x20
je 0x18010c4ba
cmp byte [rbx], 9
jne 0x18010c4c5
movzx eax, byte [rbx + 1]
inc rbx
test al, al
jne 0x18010c4b1
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 0x18010c72a
movzx eax, byte [rbx + 5]
sub al, 0x30
cmp al, 9
ja 0x18010c731
cmp byte [rbx + 6], 0x2e
jne 0x18010c731
movzx eax, byte [rbx + 7]
sub al, 0x30
cmp al, 9
ja 0x18010c731
movzx eax, byte [rbx + 8]
cmp al, 0x20
je 0x18010c518
cmp al, 9
jne 0x18010c731
movsx ecx, byte [rbx + 9]
lea eax, [rcx - 0x30]
cmp al, 9
ja 0x18010c731
movsx edx, byte [rbx + 0xa]
lea eax, [rdx - 0x30]
cmp al, 9
ja 0x18010c731
movsx r8d, byte [rbx + 0xb]
lea eax, [r8 - 0x30]
cmp al, 9
ja 0x18010c731
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 0x18010c576
cmp al, 9
je 0x18010c576
sub al, 0xa
cmp al, 3
ja 0x18010c731
mov dword [rdi + 0x148], recv
mov r9d, dword [rdi + 0x148]
mov ecx, r9d
mov rbx, qword [rdi + 0x18]
sub ecx, 0xa
je 0x18010c5d0
cmp ecx, r15d
je 0x18010c5d0
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.1800f97e0
mov eax, r15d
jmp 0x18010c86d
movzx eax, byte [rbx + 0x7e0]
test al, al
je 0x18010c61f
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 0x18010c61f
lea rdx, str.Version_mismatch__from_HTTP__u_to_HTTP__u_
mov rcx, rdi
call fcn.1800f97e0
mov eax, r15d
jmp 0x18010c86d
mov eax, dword [rdi + 0x14c]
mov dword [rdi + 0x1338], eax
mov eax, dword [rdi + 0x148]
mov dword [rdi + 0x1340], eax
movzx eax, byte [rdi + 0x148]
mov byte [rbx + 0x7e0], al
movzx eax, byte [rdi + 0x1319]
test al, al
je 0x18010c657
cmp eax, dword [rdi + 0x148]
jle 0x18010c664
movzx eax, byte [rdi + 0x148]
mov byte [rdi + 0x1319], al
cmp qword [rdi + 0x1120], r12
je 0x18010c689
cmp byte [rdi + 0x131a], r12b
jne 0x18010c689
cmp dword [rdi + 0x14c], 0x1a0
jne 0x18010c689
mov byte [rdi + 0x1e3], r15b
cmp dword [rdi + 0x148], 0xa
jne 0x18010c6ac
lea rdx, str.HTTP_1.0__assume_close_after_body
mov rcx, rdi
call fcn.1800f98d0
mov edx, r15d
mov rcx, rbx
call fcn.1800fc6c0
mov ecx, dword [rdi + 0x14c]
lea eax, [rcx - 0x64]
cmp eax, 0x63
setbe al
mov byte [rdi + 0x1e4], al
sub ecx, 0xcc
je 0x18010c6de
cmp ecx, 0x64
jne 0x18010c6f3
cmp byte [rdi + 0x538], r12b
je 0x18010c6de
mov byte [rdi + 0x1414], r15b
mov qword [rdi + 0x100], r12
mov qword [rdi + 0x108], r12
mov byte [rdi + 0x1e4], r15b
mov ebx, recv
lea r14, [rdi + 0x13c]
mov r8, rbp
xor edx, edx
mov rcx, rsi
call sub.VCRUNTIME140.dll_memchr
test rax, rax
je 0x18010c73b
lea rdx, str.Nul_byte_in_header
mov rcx, rdi
mov ebx, 8
call fcn.1800f97e0
jmp 0x18010c86b
mov byte [rdi + 0x1d9], r12b
mov eax, 8
jmp 0x18010c86d
mov ecx, dword [r14]
cmp ecx, 2
jl 0x18010c781
movzx eax, byte [rsi]
cmp al, 0x20
je 0x18010c74e
cmp al, 9
jne 0x18010c753
cmp ecx, 2
jg 0x18010c781
mov r8, rbp
mov edx, 0x3a
mov rcx, rsi
call sub.VCRUNTIME140.dll_memchr
test rax, rax
jne 0x18010c781
lea rdx, str.Header_without_colon
mov rcx, rdi
mov ebx, 8
call fcn.1800f97e0
jmp 0x18010c86b
mov r8, rbp
mov rdx, rsi
mov rcx, rdi
call fcn.180109840
test eax, eax
jne 0x18010c86d
mov r9, rbp
mov r8, rsi
mov edx, r15d
mov rcx, rdi
call fcn.1800f96f0
mov eax, dword [rdi + 0x14c]
sub eax, 0x64
cmp eax, 0x64
jae 0x18010c7b9
or ebx, 0x20
mov r9, rbp
mov r8, rsi
mov edx, ebx
mov rcx, rdi
call fcn.1800facf0
test eax, eax
jne 0x18010c86d
xor r8d, r8d
mov rdx, rbp
mov rcx, rdi
call fcn.180108d40
jmp 0x18010c86d
lea rdx, [r8 + 1]
lea rcx, [rsp + 0x30]
call fcn.1800e9c20
mov r8, rbp
lea rcx, [rsp + 0x30]
mov rdx, rsi
call fcn.1800e9be0
test eax, eax
jne 0x18010c86d
lea rcx, [rdi + 0xc58]
call fcn.1800e9c50
lea rcx, [rsp + 0x30]
call fcn.1800e9c40
lea rcx, [rsp + 0x30]
mov rbx, rax
call fcn.1800837f0
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.18010b570
mov rcx, qword [rsp + 0x98]
mov ebx, eax
add qword [r14], rcx
lea rcx, [rsp + 0x30]
call fcn.1800e9bf0
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