Function at 0x139a6b7e0
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 r14
push r15
sub rsp, 0x78
mov rbx, rdx
movaps xmmword [rsp + 0x50], xmm6
mov rdx, rcx
movaps xmmword [rsp + 0x40], xmm7
movaps xmmword [rsp + 0x30], xmm8
xorps xmm6, xmm6
xorps xmm8, xmm8
mov rax, qword [rbx + 0x28]
mov rcx, qword [rbx + 0x38]
sub rcx, qword [rbx + 0x10]
add rcx, rax
cmp byte [rax], 0x2d
mov qword [rsp + 0x20], rcx
jne 0x139a6b841
mov rcx, rbx
call fcn.139a697f0
mov rdx, qword [rsp + 0xb0]
mov r15b, 1
jmp 0x139a6b844
xor r15b, r15b
mov rcx, qword [rbx + 0x28]
xor r14d, r14d
movsd xmm7, qword [0x1399d6bb8]
mov esi, r14d
mov qword [rsp + 0x70], r12
mov ebp, r14d
mov byte [rsp + 0xc8], r15b
movsx edi, byte [rcx]
mov qword [rsp + 0x68], r13
mov byte [rsp + 0xb8], sil
cmp dil, 0x30
jne 0x139a6b88f
mov rcx, rbx
mov r12d, r14d
call fcn.139a697f0
xor r13b, r13b
jmp 0x139a6bad2
lea eax, [rdi - 0x31]
cmp al, 8
ja 0x139a6be79
mov rcx, rbx
call fcn.139a697f0
mov rax, qword [rbx + 0x28]
lea r12d, [rdi - 0x30]
mov rcx, rax
movzx edi, byte [rax]
test r15b, r15b
je 0x139a6b922
cmp dil, 0x30
jl 0x139a6b987
cmp dil, 0x39
jg 0x139a6b987
movzx edx, dil
nop dword [rax]
mov rcx, rax
cmp r12d, 0xccccccc
jb 0x139a6b8eb
jne 0x139a6b97c
cmp dl, 0x38
ja 0x139a6b97c
mov rcx, rbx
call fcn.139a697f0
lea ecx, [r12 - 6]
movzx eax, dil
lea ecx, [r12 + rcx*4]
inc ebp
lea r12d, [rax + rcx*2]
mov rcx, qword [rbx + 0x28]
movzx edi, byte [rcx]
cmp dil, 0x30
jl 0x139a6b987
mov rax, rcx
movzx edx, dil
cmp dil, 0x39
jle 0x139a6b8d0
jmp 0x139a6b987
cmp dil, 0x30
jl 0x139a6b987
cmp dil, 0x39
jg 0x139a6b987
movzx edx, dil
mov rcx, rax
cmp r12d, 0x19999999
jb 0x139a6b945
jne 0x139a6b97c
cmp dl, 0x35
ja 0x139a6b97c
mov rcx, rbx
call fcn.139a697f0
lea ecx, [r12 - 6]
movzx eax, dil
lea ecx, [r12 + rcx*4]
inc ebp
lea r12d, [rax + rcx*2]
mov rcx, qword [rbx + 0x28]
movzx edi, byte [rcx]
cmp dil, 0x30
jl 0x139a6b987
mov rax, rcx
movzx edx, dil
cmp dil, 0x39
jle 0x139a6b932
jmp 0x139a6b987
mov byte [rsp + 0xb8], 1
mov esi, r12d
xor r13b, r13b
cmp byte [rsp + 0xb8], r13b
je 0x139a6bad2
movzx edi, byte [rcx]
test r15b, r15b
je 0x139a6ba1b
cmp dil, 0x30
jl 0x139a6bad2
cmp dil, 0x39
jg 0x139a6bad2
movzx eax, dil
movabs r15, 0xccccccccccccccc
cmp rsi, r15
jb 0x139a6b9cd
jne 0x139a6ba06
cmp al, 0x38
ja 0x139a6ba06
mov rcx, rbx
call fcn.139a697f0
movzx ecx, dil
lea rax, [rsi + rsi*4]
sub ecx, 0x30
inc ebp
lea rsi, [rcx + rax*2]
mov rcx, qword [rbx + 0x28]
movzx edi, byte [rcx]
cmp dil, 0x30
jl 0x139a6bad2
movzx eax, dil
cmp dil, 0x39
jle 0x139a6b9c2
jmp 0x139a6bad2
mov rdx, rsi
mov r13b, 1
xorps xmm6, xmm6
test rdx, rdx
js 0x139a6ba80
cvtsi2sd xmm6, rdx
jmp 0x139a6ba95
cmp dil, 0x30
jl 0x139a6bad2
cmp dil, 0x39
jg 0x139a6bad2
movzx eax, dil
movabs r15, 0x1999999999999999
nop dword [rax]
mov rdx, rsi
cmp rsi, r15
jb 0x139a6ba4e
jne 0x139a6ba09
cmp al, 0x35
ja 0x139a6ba09
mov rcx, rbx
call fcn.139a697f0
movzx ecx, dil
lea rax, [rsi + rsi*4]
sub ecx, 0x30
inc ebp
lea rsi, [rcx + rax*2]
mov rcx, qword [rbx + 0x28]
movzx edi, byte [rcx]
cmp dil, 0x30
jl 0x139a6bad2
movzx eax, dil
cmp dil, 0x39
jle 0x139a6ba40
jmp 0x139a6bad2
mov rax, rdx
and edx, 1
shr rax, 1
or rax, rdx
cvtsi2sd xmm6, rax
addsd xmm6, xmm6
cmp byte [rcx], 0x30
jl 0x139a6bad2
movzx edi, byte [rcx]
nop dword [rax]
cmp dil, 0x39
ja 0x139a6bad2
mov rcx, rbx
call fcn.139a697f0
movzx eax, dil
sub eax, 0x30
mulsd xmm6, xmm7
movd xmm0, eax
mov rax, qword [rbx + 0x28]
cvtdq2pd xmm0, xmm0
movzx edi, byte [rax]
addsd xmm6, xmm0
cmp dil, 0x30
jge 0x139a6baa0
mov rax, qword [rbx + 0x28]
mov r15d, r14d
cmp byte [rax], 0x2e
jne 0x139a6bbeb
mov rcx, rbx
call fcn.139a697f0
mov rdx, qword [rbx + 0x28]
movzx edi, byte [rdx]
cmp dil, 0x30
jl 0x139a6bc2c
cmp dil, 0x39
jg 0x139a6bc2c
test r13b, r13b
jne 0x139a6bb9c
cmp byte [rsp + 0xb8], r14b
jne 0x139a6bb1b
mov esi, r12d
mov rax, rdx
movabs r13, 0x1fffffffffffff
nop dword [rax + rax]
mov rdx, rax
cmp dil, 0x39
ja 0x139a6bb6f
cmp rsi, r13
ja 0x139a6bb6f
mov rcx, rbx
call fcn.139a697f0
movzx ecx, dil
lea rax, [rsi + rsi*4]
sub ecx, 0x30
dec r15d
lea rsi, [rcx + rax*2]
test rsi, rsi
je 0x139a6bb5f
inc ebp
mov rdx, qword [rbx + 0x28]
mov rax, rdx
movzx edi, byte [rdx]
cmp dil, 0x30
jge 0x139a6bb30
xorps xmm6, xmm6
test rsi, rsi
js 0x139a6bb7e
cvtsi2sd xmm6, rsi
jmp 0x139a6bb96
mov rax, rsi
mov rcx, rsi
shr rcx, 1
and eax, 1
or rcx, rax
cvtsi2sd xmm6, rcx
addsd xmm6, xmm6
movzx edi, byte [rdx]
mov r13b, 1
cmp dil, 0x30
jl 0x139a6bbeb
movzx edi, byte [rdx]
cmp dil, 0x39
jg 0x139a6bbeb
mov rcx, rbx
call fcn.139a697f0
cmp ebp, 0x11
jge 0x139a6bbde
mulsd xmm6, xmm7
dec r15d
movsx eax, dil
sub eax, 0x30
movd xmm0, eax
cvtdq2pd xmm0, xmm0
addsd xmm0, xmm6
comisd xmm0, xmm8
movaps xmm6, xmm0
jbe 0x139a6bbde
inc ebp
mov rax, qword [rbx + 0x28]
movzx edi, byte [rax]
cmp dil, 0x30
jge 0x139a6bba5
mov rax, qword [rbx + 0x28]
movzx ecx, byte [rax]
cmp cl, 0x65
je 0x139a6bc00
cmp cl, 0x45
jne 0x139a6bd39
mov rcx, rbx
call fcn.139a697f0
test r13b, r13b
jne 0x139a6bc64
mov rcx, rsi
cmp byte [rsp + 0xb8], r14b
jne 0x139a6bc1d
mov ecx, r12d
xorps xmm6, xmm6
test rcx, rcx
js 0x139a6bc4c
cvtsi2sd xmm6, rcx
jmp 0x139a6bc61
sub rdx, qword [rbx + 0x10]
mov rax, qword [rsp + 0xb0]
add rdx, qword [rbx + 0x38]
mov dword [rax + 0x30], recv
mov qword [rax + 0x38], rdx
jmp 0x139a6be8c
mov rax, rcx
and ecx, 1
shr rax, 1
or rax, rcx
cvtsi2sd xmm6, rax
addsd xmm6, xmm6
mov r13b, 1
mov rcx, qword [rbx + 0x28]
xor bpl, bpl
movzx edi, byte [rcx]
cmp dil, 0x2b
jne 0x139a6bc7e
mov rcx, rbx
call fcn.139a697f0
jmp 0x139a6bc8f
cmp dil, 0x2d
jne 0x139a6bc96
mov rcx, rbx
call fcn.139a697f0
mov bpl, 1
mov rcx, qword [rbx + 0x28]
movzx edi, byte [rcx]
lea eax, [rdi - 0x30]
cmp al, 9
ja 0x139a6bdc6
mov rcx, rbx
call fcn.139a697f0
mov rax, qword [rbx + 0x28]
movsx r14d, dil
sub r14d, 0x30
movzx edi, byte [rax]
test bpl, bpl
je 0x139a6bd79
lea ecx, [r15 + 0x7ffffff7]
mov eax, 0x66666667
imul ecx
mov ebp, edx
sar ebp, 2
mov eax, ebp
shr eax, 0x1f
add ebp, eax
cmp dil, 0x30
jl 0x139a6bd36
cmp dil, 0x39
ja 0x139a6bd36
mov rcx, rbx
call fcn.139a697f0
lea r14d, [r14 + r14*4]
movzx eax, dil
lea r14d, [r14 - 0x18]
lea r14d, [rax + r14*2]
cmp r14d, ebp
jle 0x139a6bd29
mov rax, qword [rbx + 0x28]
movzx ecx, byte [rax]
cmp cl, 0x30
jl 0x139a6bd29
cmp cl, 0x39
ja 0x139a6bd29
mov rcx, rbx
call fcn.139a697f0
mov rax, qword [rbx + 0x28]
movzx ecx, byte [rax]
cmp cl, 0x30
jge 0x139a6bd10
mov rax, qword [rbx + 0x28]
movzx edi, byte [rax]
cmp dil, 0x30
jge 0x139a6bce1
neg r14d
test r13b, r13b
je 0x139a6be09
lea edx, [r14 + r15]
movaps xmm0, xmm6
call fcn.1399fef00
comisd xmm0, xmmword [0x1399d6c10]
jbe 0x139a6bde6
mov rax, qword [rsp + 0xb0]
mov rcx, qword [rsp + 0x20]
mov dword [rax + 0x30], reloc.WS2_32.dll_listen
mov qword [rax + 0x38], rcx
jmp 0x139a6be8c
mov ebp, 0x134
sub ebp, r15d
cmp dil, 0x30
jl 0x139a6bd39
cmp dil, 0x39
jg 0x139a6bd39
nop dword [rax]
mov rcx, rbx
call fcn.139a697f0
lea r14d, [r14 + r14*4]
movzx eax, dil
lea r14d, [r14 - 0x18]
lea r14d, [rax + r14*2]
cmp r14d, ebp
jg 0x139a6bd5c
mov rax, qword [rbx + 0x28]
movzx ecx, byte [rax]
cmp cl, 0x30
jl 0x139a6bd39
movzx edi, cl
cmp cl, 0x39
jle 0x139a6bd90
jmp 0x139a6bd39
sub rcx, qword [rbx + 0x10]
mov rax, qword [rsp + 0xb0]
add rcx, qword [rbx + 0x38]
mov dword [rax + 0x30], reloc.WS2_32.dll_ntohs
mov qword [rax + 0x38], rcx
jmp 0x139a6be8c
cmp byte [rsp + 0xc8], 0
je 0x139a6bdf7
xorps xmm0, xmmword [0x1399d6e70]
mov rcx, qword [rsp + 0xc0]
movaps xmm1, xmm0
call fcn.139a02d70
jmp 0x139a6be5b
cmp byte [rsp + 0xb8], 0
mov rcx, qword [rsp + 0xc0]
je 0x139a6be3c
cmp byte [rsp + 0xc8], 0
je 0x139a6be32
neg rsi
mov rdx, rsi
call fcn.139a02e60
jmp 0x139a6be5b
mov rdx, rsi
call fcn.139a02dd0
jmp 0x139a6be5b
cmp byte [rsp + 0xc8], 0
je 0x139a6be53
neg r12d
mov edx, r12d
call fcn.139a02f70
jmp 0x139a6be5b
mov edx, r12d
call fcn.139a02f10
test al, al
jne 0x139a6be8c
mov rax, qword [rsp + 0xb0]
mov rcx, qword [rsp + 0x20]
mov dword [rax + 0x30], reloc.WS2_32.dll_recv
mov qword [rax + 0x38], rcx
jmp 0x139a6be8c
sub rcx, qword [rbx + 0x10]
add rcx, qword [rbx + 0x38]
mov qword [rdx + 0x38], rcx
mov dword [rdx + 0x30], 3
mov r13, 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 r14
pop rdi
pop rsi
pop rbp
pop rbx
ret