Function at 0x14008c370
Capabilities:
Validate payment card number using luhn algorithm

Disassembly:
mov qword [rsp + 0x18], r8
mov qword [rsp + 8], rcx
push rbx
push rbp
push rsi
push rdi
push r13
push r15
sub rsp, 0x78
mov rbx, rdx
movaps xmmword [rsp + 0x50], xmm6
mov rdx, qword [rdx + 0x28]
xorps xmm6, xmm6
movaps xmmword [rsp + 0x40], xmm7
movaps xmmword [rsp + 0x30], xmm8
xorps xmm8, xmm8
mov rax, qword [rbx + 0x38]
sub rax, qword [rbx + 0x10]
movzx edi, byte [rdx]
add rax, rdx
mov qword [rsp + 0x20], rax
cmp dil, 0x2d
jne 0x14008c3d9
mov rcx, rbx
call fcn.14008a340
mov rdx, qword [rbx + 0x28]
mov r13b, 1
mov rcx, qword [rsp + 0xb0]
movzx edi, byte [rdx]
jmp 0x14008c3dc
xor r13b, r13b
movsd xmm7, qword [0x1403643d0]
xor ebp, ebp
mov qword [rsp + 0x70], r12
mov esi, ebp
mov byte [rsp + 0xb8], sil
mov r15d, ebp
mov byte [rsp + 0xc8], r13b
mov qword [rsp + 0x68], r14
cmp dil, 0x30
jne 0x14008c422
mov rcx, rbx
mov r14d, ebp
call fcn.14008a340
mov rdx, qword [rbx + 0x28]
xor r12b, r12b
jmp 0x14008c5ad
lea eax, [rdi - 0x31]
cmp al, 8
ja 0x14008ca37
mov rcx, rbx
call fcn.14008a340
mov rax, qword [rbx + 0x28]
movsx r14d, dil
sub r14d, 0x30
movzx edi, byte [rax]
test r13b, r13b
je 0x14008c498
cmp dil, 0x30
jl 0x14008c4ec
cmp dil, 0x39
jg 0x14008c4ec
cmp r14d, 0xccccccc
jb 0x14008c46e
jne 0x14008c4e1
cmp dil, 0x38
jg 0x14008c4e1
mov rcx, rbx
call fcn.14008a340
movsx eax, dil
lea r14d, [r14 + r14*4]
lea r14d, [r14 - 0x18]
inc r15d
lea r14d, [rax + r14*2]
mov rax, qword [rbx + 0x28]
movzx edi, byte [rax]
cmp dil, 0x30
jge 0x14008c453
jmp 0x14008c4ec
cmp dil, 0x30
jl 0x14008c4ec
nop
cmp dil, 0x39
jg 0x14008c4ec
cmp r14d, 0x19999999
jb 0x14008c4b7
jne 0x14008c4e1
cmp dil, 0x35
jg 0x14008c4e1
mov rcx, rbx
call fcn.14008a340
movsx eax, dil
lea r14d, [r14 + r14*4]
lea r14d, [r14 - 0x18]
inc r15d
lea r14d, [rax + r14*2]
mov rax, qword [rbx + 0x28]
movzx edi, byte [rax]
cmp dil, 0x30
jge 0x14008c4a0
jmp 0x14008c4ec
mov byte [rsp + 0xb8], 1
mov esi, r14d
xor r12b, r12b
mov rdx, rax
cmp byte [rsp + 0xb8], bpl
je 0x14008c562
movzx ecx, byte [rax]
test r13b, r13b
je 0x14008c69e
cmp cl, 0x30
jl 0x14008c562
movzx edi, cl
movabs r13, 0xccccccccccccccc
nop word [rax + rax]
cmp dil, 0x39
jg 0x14008c562
cmp rsi, r13
jb 0x14008c53b
jne 0x14008c669
cmp dil, 0x38
jg 0x14008c669
mov rcx, rbx
call fcn.14008a340
mov rdx, qword [rbx + 0x28]
lea rax, [rsi + rsi*4]
movsx ecx, dil
inc r15d
sub ecx, 0x30
movzx edi, byte [rdx]
lea rsi, [rcx + rax*2]
cmp dil, 0x30
jge 0x14008c520
mov rax, rdx
test r12b, r12b
je 0x14008c5ad
cmp byte [rax], 0x30
mov rdx, rax
jl 0x14008c5ad
movzx edi, byte [rax]
mov rdx, rax
cmp dil, 0x39
jg 0x14008c5ad
mov rcx, rbx
call fcn.14008a340
mov rdx, qword [rbx + 0x28]
movsx eax, dil
sub eax, 0x30
mulsd xmm6, xmm7
movzx edi, byte [rdx]
movd xmm0, eax
mov rax, rdx
cvtdq2pd xmm0, xmm0
addsd xmm6, xmm0
cmp dil, 0x30
jge 0x14008c575
cmp byte [rdx], 0x2e
mov r13d, ebp
jne 0x14008c753
mov rcx, rbx
call fcn.14008a340
mov rcx, qword [rbx + 0x28]
movzx edi, byte [rcx]
lea eax, [rdi - 0x30]
cmp al, 9
ja 0x14008c7f3
test r12b, r12b
jne 0x14008c799
cmp byte [rsp + 0xb8], bpl
mov r8, rcx
mov eax, r14d
movabs r12, 0x1fffffffffffff
cmovne rax, rsi
mov rsi, rax
nop dword [rax + rax]
mov r9, rcx
mov rdx, r8
cmp dil, 0x39
jg 0x14008c64f
cmp rsi, r12
ja 0x14008c64f
mov rcx, rbx
call fcn.14008a340
movsx ecx, dil
lea rax, [rsi + rsi*4]
sub ecx, 0x30
dec r13d
lea rsi, [rcx + rax*2]
mov rcx, qword [rbx + 0x28]
test rsi, rsi
lea eax, [r15 + 1]
mov r8, rcx
mov r9, rcx
cmove eax, r15d
mov rdx, rcx
movzx edi, byte [rcx]
mov r15d, eax
cmp dil, 0x30
jge 0x14008c600
movzx edi, byte [r9]
xorps xmm6, xmm6
test rsi, rsi
js 0x14008c732
cvtsi2sd xmm6, rsi
jmp 0x14008c74a
xorps xmm6, xmm6
test rsi, rsi
js 0x14008c67e
cvtsi2sd xmm6, rsi
mov r12b, 1
jmp 0x14008c562
mov rax, rsi
mov rcx, rsi
shr rcx, 1
and eax, 1
or rcx, rax
mov r12b, 1
cvtsi2sd xmm6, rcx
addsd xmm6, xmm6
jmp 0x14008c562
cmp cl, 0x30
jl 0x14008c562
movzx edi, cl
movabs r13, 0x1999999999999999
cmp dil, 0x39
jg 0x14008c562
cmp rsi, r13
jb 0x14008c6cb
jne 0x14008c6f7
cmp dil, 0x35
jg 0x14008c6f7
mov rcx, rbx
call fcn.14008a340
mov rdx, qword [rbx + 0x28]
lea rax, [rsi + rsi*4]
movsx ecx, dil
inc r15d
sub ecx, 0x30
movzx edi, byte [rdx]
lea rsi, [rcx + rax*2]
cmp dil, 0x30
jge 0x14008c6b4
jmp 0x14008c5ad
xorps xmm6, xmm6
test rsi, rsi
js 0x14008c70f
cvtsi2sd xmm6, rsi
mov r12b, 1
mov rax, rdx
jmp 0x14008c56a
mov rax, rsi
mov rcx, rsi
and eax, 1
shr rcx, 1
or rcx, rax
mov r12b, 1
mov rax, rdx
cvtsi2sd xmm6, rcx
addsd xmm6, xmm6
jmp 0x14008c56a
mov rax, rsi
mov rcx, rsi
shr rcx, 1
and eax, 1
or rcx, rax
cvtsi2sd xmm6, rcx
addsd xmm6, xmm6
mov r12b, 1
cmp dil, 0x30
jge 0x14008c7a0
movzx eax, byte [rdx]
sub al, 0x45
test al, 0xdf
jne 0x14008c908
mov rcx, rbx
call fcn.14008a340
test r12b, r12b
jne 0x14008c82e
cmp byte [rsp + 0xb8], bpl
mov rcx, rsi
mov eax, r14d
xorps xmm6, xmm6
cmove rcx, rax
test rcx, rcx
js 0x14008c816
cvtsi2sd xmm6, rcx
jmp 0x14008c82b
mov rdx, rcx
nop dword [rax]
cmp dil, 0x39
jg 0x14008c753
cmp r15d, 0x11
jge 0x14008c7d9
mulsd xmm6, xmm7
dec r13d
movsx eax, dil
sub eax, 0x30
movd xmm0, eax
lea eax, [r15 + 1]
cvtdq2pd xmm0, xmm0
addsd xmm0, xmm6
comisd xmm0, xmm8
movaps xmm6, xmm0
cmovbe eax, r15d
mov r15d, eax
mov rcx, rbx
call fcn.14008a340
mov rdx, qword [rbx + 0x28]
movzx edi, byte [rdx]
cmp dil, 0x30
jge 0x14008c7a0
jmp 0x14008c753
mov rax, qword [rbx + 0x38]
sub rax, qword [rbx + 0x10]
mov rdx, qword [rsp + 0xb0]
add rax, rcx
mov qword [rdx + 0x38], rax
mov dword [rdx + 0x30], select
jmp 0x14008ca4a
mov rax, rcx
and ecx, 1
shr rax, 1
or rax, rcx
cvtsi2sd xmm6, rax
addsd xmm6, xmm6
mov r12b, 1
mov rcx, qword [rbx + 0x28]
xor r15b, r15b
movzx edi, byte [rcx]
cmp dil, 0x2b
jne 0x14008c848
mov rcx, rbx
call fcn.14008a340
jmp 0x14008c859
cmp dil, 0x2d
jne 0x14008c860
mov rcx, rbx
call fcn.14008a340
mov r15b, 1
mov rcx, qword [rbx + 0x28]
movzx edi, byte [rcx]
lea eax, [rdi - 0x30]
cmp al, 9
ja 0x14008c984
mov rcx, rbx
call fcn.14008a340
mov rax, qword [rbx + 0x28]
movsx ebp, dil
sub ebp, 0x30
movzx edi, byte [rax]
test r15b, r15b
je 0x14008c945
lea ecx, [r13 + 0x7ffffff7]
mov eax, 0x66666667
imul ecx
mov r15d, edx
sar r15d, 2
mov eax, r15d
shr eax, 0x1f
add r15d, eax
cmp dil, 0x30
jl 0x14008c906
nop
cmp dil, 0x39
jg 0x14008c906
mov rcx, rbx
call fcn.14008a340
lea ebp, [rbp + rbp*4]
movsx eax, dil
lea ebp, [rbp - 0x18]
lea ebp, [rax + rbp*2]
cmp ebp, r15d
jle 0x14008c8f9
mov rax, qword [rbx + 0x28]
movzx ecx, byte [rax]
cmp cl, 0x30
jl 0x14008c8f9
nop dword [rax]
cmp cl, 0x39
jg 0x14008c8f9
mov rcx, rbx
call fcn.14008a340
mov rax, qword [rbx + 0x28]
movzx ecx, byte [rax]
cmp cl, 0x30
jge 0x14008c8e0
mov rax, qword [rbx + 0x28]
movzx edi, byte [rax]
cmp dil, 0x30
jge 0x14008c8b0
neg ebp
test r12b, r12b
je 0x14008c9c7
mov edx, ebp
movaps xmm0, xmm6
add edx, r13d
call fcn.140020d20
comisd xmm0, xmmword [0x140364438]
jbe 0x14008c9a4
mov rdx, qword [rsp + 0xb0]
mov rax, qword [rsp + 0x20]
mov dword [rdx + 0x30], reloc.WS2_32.dll_listen
mov qword [rdx + 0x38], rax
jmp 0x14008ca4a
mov r15d, 0x134
sub r15d, r13d
cmp dil, 0x30
jl 0x14008c908
cmp dil, 0x39
jg 0x14008c908
mov rcx, rbx
call fcn.14008a340
lea ebp, [rbp + rbp*4]
movsx eax, dil
lea ebp, [rbp - 0x18]
lea ebp, [rax + rbp*2]
cmp ebp, r15d
jg 0x14008c928
mov rax, qword [rbx + 0x28]
movzx edi, byte [rax]
cmp dil, 0x30
jge 0x14008c954
jmp 0x14008c908
sub rcx, qword [rbx + 0x10]
mov rdx, qword [rsp + 0xb0]
add rcx, qword [rbx + 0x38]
mov dword [rdx + 0x30], reloc.WS2_32.dll_ntohs
mov qword [rdx + 0x38], rcx
jmp 0x14008ca4a
cmp byte [rsp + 0xc8], 0
je 0x14008c9b5
xorps xmm0, xmmword [0x140364600]
mov rcx, qword [rsp + 0xc0]
movaps xmm1, xmm0
call fcn.140024900
jmp 0x14008ca19
cmp byte [rsp + 0xb8], 0
mov rcx, qword [rsp + 0xc0]
je 0x14008c9fa
cmp byte [rsp + 0xc8], 0
je 0x14008c9f0
neg rsi
mov rdx, rsi
call fcn.1400249f0
jmp 0x14008ca19
mov rdx, rsi
call fcn.140024960
jmp 0x14008ca19
cmp byte [rsp + 0xc8], 0
je 0x14008ca11
neg r14d
mov edx, r14d
call fcn.140024ab0
jmp 0x14008ca19
mov edx, r14d
call fcn.140024a40
test al, al
jne 0x14008ca4a
mov rdx, qword [rsp + 0xb0]
mov rax, qword [rsp + 0x20]
mov dword [rdx + 0x30], reloc.WS2_32.dll_recv
mov qword [rdx + 0x38], rax
jmp 0x14008ca4a
sub rdx, qword [rbx + 0x10]
add rdx, qword [rbx + 0x38]
mov qword [rcx + 0x38], rdx
mov dword [rcx + 0x30], 3
mov r14, qword [rsp + 0x68]
mov r12, qword [rsp + 0x70]
movaps xmm6, xmmword [rsp + 0x50]
movaps xmm7, xmmword [rsp + 0x40]
movaps xmm8, xmmword [rsp + 0x30]
add rsp, 0x78
pop r15
pop r13
pop rdi
pop rsi
pop rbp
pop rbx
ret