Function at 0x140017e60
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 0x140017ec9
mov rcx, rbx
call fcn.140015f60
mov rdx, qword [rbx + 0x28]
mov r13b, 1
mov rcx, qword [rsp + 0xb0]
movzx edi, byte [rdx]
jmp 0x140017ecc
xor r13b, r13b
movsd xmm7, qword [0x1401333f0]
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 0x140017f12
mov rcx, rbx
mov r14d, ebp
call fcn.140015f60
mov rdx, qword [rbx + 0x28]
xor r12b, r12b
jmp 0x14001811b
lea eax, [rdi - 0x31]
cmp al, 8
ja 0x1400184c9
mov rcx, rbx
call fcn.140015f60
mov rax, qword [rbx + 0x28]
movsx r14d, dil
sub r14d, 0x30
movzx edi, byte [rax]
test r13b, r13b
je 0x140017f88
cmp dil, 0x30
jl 0x140017fdc
cmp dil, 0x39
jg 0x140017fdc
cmp r14d, 0xccccccc
jb 0x140017f5e
jne 0x140017fd1
cmp dil, 0x38
jg 0x140017fd1
mov rcx, rbx
call fcn.140015f60
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 0x140017f43
jmp 0x140017fdc
cmp dil, 0x30
jl 0x140017fdc
nop
cmp dil, 0x39
jg 0x140017fdc
cmp r14d, 0x19999999
jb 0x140017fa7
jne 0x140017fd1
cmp dil, 0x35
jg 0x140017fd1
mov rcx, rbx
call fcn.140015f60
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 0x140017f90
jmp 0x140017fdc
mov byte [rsp + 0xb8], 1
mov esi, r14d
xor r12b, r12b
mov r8, rax
cmp byte [rsp + 0xb8], bpl
je 0x1400180ca
movzx ecx, byte [rax]
test r13b, r13b
je 0x140018051
cmp cl, 0x30
jl 0x1400180ca
movzx edi, cl
movabs r13, 0xccccccccccccccc
nop
cmp dil, 0x39
jg 0x1400180ca
cmp rsi, r13
jb 0x140018027
jne 0x1400180a0
cmp dil, 0x38
jg 0x1400180a0
mov rcx, rbx
call fcn.140015f60
mov r8, qword [rbx + 0x28]
lea rax, [rsi + rsi*4]
movsx ecx, dil
inc r15d
sub ecx, 0x30
movzx edi, byte [r8]
lea rsi, [rcx + rax*2]
cmp dil, 0x30
jge 0x140018010
jmp 0x1400180ca
cmp cl, 0x30
jl 0x1400180ca
movzx edi, cl
movabs r13, 0x1999999999999999
cmp dil, 0x39
jg 0x1400180ca
cmp rsi, r13
jb 0x140018076
jne 0x1400180a0
cmp dil, 0x35
jg 0x1400180a0
mov rcx, rbx
call fcn.140015f60
mov r8, qword [rbx + 0x28]
lea rax, [rsi + rsi*4]
movsx ecx, dil
inc r15d
sub ecx, 0x30
movzx edi, byte [r8]
lea rsi, [rcx + rax*2]
cmp dil, 0x30
jge 0x140018063
jmp 0x1400180ca
xorps xmm6, xmm6
test rsi, rsi
js 0x1400180af
cvtsi2sd xmm6, rsi
jmp 0x1400180c7
mov rax, rsi
mov rcx, rsi
and eax, 1
shr rcx, 1
or rcx, rax
cvtsi2sd xmm6, rcx
addsd xmm6, xmm6
mov r12b, 1
mov rdx, r8
test r12b, r12b
je 0x14001811b
cmp byte [r8], 0x30
jl 0x14001811b
movzx edi, byte [r8]
nop dword [rax]
mov rdx, r8
cmp dil, 0x39
jg 0x14001811b
mov rcx, rbx
call fcn.140015f60
mov rdx, qword [rbx + 0x28]
movsx eax, dil
mov r8, rdx
sub eax, 0x30
mulsd xmm6, xmm7
movzx edi, byte [rdx]
movd xmm0, eax
cvtdq2pd xmm0, xmm0
addsd xmm0, xmm6
movaps xmm6, xmm0
cmp dil, 0x30
jge 0x1400180e0
cmp byte [rdx], 0x2e
mov r13d, ebp
jne 0x14001826e
mov rcx, rbx
call fcn.140015f60
mov rcx, qword [rbx + 0x28]
movzx edi, byte [rcx]
lea eax, [rdi - 0x30]
cmp al, 9
jbe 0x140018160
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], 0xe
jmp 0x1400184dc
test r12b, r12b
jne 0x140018216
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 0x1400181df
cmp rsi, r12
ja 0x1400181df
mov rcx, rbx
call fcn.140015f60
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 0x140018190
xorps xmm6, xmm6
test rsi, rsi
js 0x1400181f5
movzx edi, byte [r9]
mov r12b, 1
cvtsi2sd xmm6, rsi
jmp 0x140018219
movzx edi, byte [r9]
mov rax, rsi
mov rcx, rsi
and eax, 1
shr rcx, 1
mov r12b, 1
or rcx, rax
cvtsi2sd xmm6, rcx
addsd xmm6, xmm6
jmp 0x140018219
mov rdx, rcx
cmp dil, 0x30
jl 0x14001826e
nop
cmp dil, 0x39
jg 0x14001826e
cmp r15d, 0x11
jge 0x140018259
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.140015f60
mov rdx, qword [rbx + 0x28]
movzx edi, byte [rdx]
cmp dil, 0x30
jge 0x140018220
movzx eax, byte [rdx]
sub al, 0x45
test al, 0xdf
jne 0x140018398
mov rcx, rbx
call fcn.140015f60
test r12b, r12b
jne 0x1400182c1
cmp byte [rsp + 0xb8], bpl
mov rcx, rsi
mov eax, r14d
xorps xmm6, xmm6
cmove rcx, rax
test rcx, rcx
js 0x1400182a9
cvtsi2sd xmm6, rcx
jmp 0x1400182be
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 0x1400182db
mov rcx, rbx
call fcn.140015f60
jmp 0x1400182ec
cmp dil, 0x2d
jne 0x1400182f3
mov rcx, rbx
call fcn.140015f60
mov r15b, 1
mov rcx, qword [rbx + 0x28]
movzx edi, byte [rcx]
lea eax, [rdi - 0x30]
cmp al, 9
ja 0x140018414
mov rcx, rbx
call fcn.140015f60
mov rax, qword [rbx + 0x28]
movsx ebp, dil
sub ebp, 0x30
movzx edi, byte [rax]
test r15b, r15b
je 0x1400183d5
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 0x140018396
cmp dil, 0x39
jg 0x140018396
mov rcx, rbx
call fcn.140015f60
lea ebp, [rbp + rbp*4]
movsx eax, dil
lea ebp, [rbp - 0x18]
lea ebp, [rax + rbp*2]
cmp ebp, r15d
jle 0x140018389
mov rax, qword [rbx + 0x28]
movzx ecx, byte [rax]
cmp cl, 0x30
jl 0x140018389
nop
cmp cl, 0x39
jg 0x140018389
mov rcx, rbx
call fcn.140015f60
mov rax, qword [rbx + 0x28]
movzx ecx, byte [rax]
cmp cl, 0x30
jge 0x140018370
mov rax, qword [rbx + 0x28]
movzx edi, byte [rax]
cmp dil, 0x30
jge 0x140018341
neg ebp
test r12b, r12b
je 0x140018457
mov edx, ebp
movaps xmm0, xmm6
add edx, r13d
call fcn.1400014f0
comisd xmm0, xmmword [0x140133428]
jbe 0x140018434
mov rdx, qword [rsp + 0xb0]
mov rax, qword [rsp + 0x20]
mov dword [rdx + 0x30], 0xd
mov qword [rdx + 0x38], rax
jmp 0x1400184dc
mov r15d, 0x134
sub r15d, r13d
cmp dil, 0x30
jl 0x140018398
cmp dil, 0x39
jg 0x140018398
mov rcx, rbx
call fcn.140015f60
lea ebp, [rbp + rbp*4]
movsx eax, dil
lea ebp, [rbp - 0x18]
lea ebp, [rax + rbp*2]
cmp ebp, r15d
jg 0x1400183b8
mov rax, qword [rbx + 0x28]
movzx edi, byte [rax]
cmp dil, 0x30
jge 0x1400183e4
jmp 0x140018398
sub rcx, qword [rbx + 0x10]
mov rdx, qword [rsp + 0xb0]
add rcx, qword [rbx + 0x38]
mov dword [rdx + 0x30], 0xf
mov qword [rdx + 0x38], rcx
jmp 0x1400184dc
cmp byte [rsp + 0xc8], 0
je 0x140018445
xorps xmm0, xmmword [0x1401334c0]
mov rcx, qword [rsp + 0xc0]
movaps xmm1, xmm0
call fcn.1400036b0
jmp 0x1400184ab
cmp byte [rsp + 0xb8], 0
mov rcx, qword [rsp + 0xc0]
je 0x14001848b
cmp byte [rsp + 0xc8], 0
je 0x140018481
not rsi
lea rdx, [rsi + 1]
call fcn.1400037a0
jmp 0x1400184ab
mov rdx, rsi
call fcn.140003710
jmp 0x1400184ab
cmp byte [rsp + 0xc8], 0
je 0x1400184a3
not r14d
lea edx, [r14 + 1]
call fcn.1400038c0
jmp 0x1400184ab
mov edx, r14d
call fcn.140003850
test al, al
jne 0x1400184dc
mov rdx, qword [rsp + 0xb0]
mov rax, qword [rsp + 0x20]
mov dword [rdx + 0x30], 0x10
mov qword [rdx + 0x38], rax
jmp 0x1400184dc
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