Function at 0x180022c7c
Capabilities:
Validate payment card number using luhn algorithm

Disassembly:
mov qword [rsp + 8], rbx
mov qword [rsp + 0x10], rbp
push rsi
push rdi
push r12
push r14
push r15
sub rsp, 0x30
mov r10, qword [r9]
mov r14, rcx
mov eax, dword [rsp + 0x80]
movabs rcx, 0x2386f26fc10000
movsxd rsi, dword [r9 + 8]
mov rdi, rdx
cmp r10, rcx
jb 0x180022cc0
mov r9d, reloc.WS2_32.dll_recvfrom
jmp 0x180022dec
movabs rcx, 0x38d7ea4c68000
cmp r10, rcx
jb 0x180022cda
mov r9d, reloc.WS2_32.dll_recv
jmp 0x180022dec
movabs rcx, 0x5af3107a4000
cmp r10, rcx
jb 0x180022cf4
mov r9d, send
jmp 0x180022dec
movabs rcx, 0x9184e72a000
cmp r10, rcx
jb 0x180022d0e
mov r9d, send
jmp 0x180022dec
movabs rcx, 0xe8d4a51000
cmp r10, rcx
jb 0x180022d28
mov r9d, recvfrom
jmp 0x180022dec
movabs rcx, 0x174876e800
cmp r10, rcx
jb 0x180022d42
mov r9d, recvfrom
jmp 0x180022dec
movabs rcx, 0x2540be400
cmp r10, rcx
jb 0x180022d5c
mov r9d, recv
jmp 0x180022dec
cmp r10, 0x3b9aca00
jb 0x180022d6d
mov r9d, 0xa
jmp 0x180022dec
cmp r10, 0x5f5e100
jb 0x180022d7e
mov r9d, 9
jmp 0x180022dec
cmp r10, 0x989680
jb 0x180022d8f
mov r9d, 8
jmp 0x180022dec
cmp r10, 0xf4240
jb 0x180022da0
mov r9d, 7
jmp 0x180022dec
cmp r10, 0x186a0
jb 0x180022db1
mov r9d, 6
jmp 0x180022dec
cmp r10, 0x2710
jb 0x180022dc2
mov r9d, 5
jmp 0x180022dec
cmp r10, 0x3e8
jb 0x180022dd3
mov r9d, 4
jmp 0x180022dec
cmp r10, 0x64
jb 0x180022de1
mov r9d, 3
jmp 0x180022dec
cmp r10, 0xa
sbb r9d, r9d
add r9d, 2
lea ebp, [r9 + rsi]
mov r15d, 1
lea r11d, [rbp - 1]
mov dword [rsp + 0x80], r11d
test eax, eax
jne 0x180022e69
lea ecx, [rax - 3]
mov eax, ecx
sub eax, r9d
cmp r9d, r15d
cmovne ecx, eax
cmp ecx, esi
jg 0x180022e27
xor eax, eax
cmp r9d, r15d
setne al
add eax, 4
cmp esi, eax
jle 0x180022e7e
xor ecx, ecx
lea eax, [r11 + 0x63]
cmp eax, 0xc6
seta cl
xor eax, eax
add ecx, 4
cmp r9d, r15d
seta al
add ecx, eax
mov rax, r8
add ecx, r9d
sub rax, rdi
mov qword [rsp + 0x78], rcx
cmp rax, rcx
jge 0x1800230b5
mov qword [r14], r8
mov dword [r14 + 8], 0x84
jmp 0x1800232df
cmp eax, 3
jne 0x180022e79
lea eax, [r11 + 4]
cmp eax, 9
ja 0x180022e27
jmp 0x180022e7e
cmp eax, 2
jne 0x180022e27
lea rbx, [0x180000000]
test esi, esi
js 0x180022e9c
mov ecx, ebp
cmp r10, r15
jne 0x180022ead
movzx eax, byte [rsi + rbx + 0x1467b0]
sub ecx, eax
jmp 0x180022ead
test ebp, ebp
jle 0x180022ea6
lea ecx, [r9 + 1]
jmp 0x180022ead
mov ecx, 2
sub ecx, esi
mov rax, r8
mov r15d, ecx
sub rax, rdi
cmp rax, r15
jl 0x180022e59
test esi, esi
jle 0x180022ef8
cmp esi, 0x16
jg 0x180022edd
bsf rcx, r10
mov rax, r10
shr rax, cl
cmp rax, qword [rbx + rsi*8 + 0x1468f0]
ja 0x180022edd
mov eax, r9d
jmp 0x180022efb
and dword [rsp + 0x20], 0
mov rcx, r14
movsd xmm3, qword [rsp + 0x88]
call fcn.180023698
jmp 0x1800232df
mov rax, r15
lea r11, [rax + rdx]
mov r12d, 0x51eb851f
movabs rax, 0xffffffff00000000
test rax, r10
je 0x18002300d
movabs rax, 0xabcc77118461cefd
mul r10
shr rdx, 0x1a
imul eax, edx, 0x5f5e100
sub r10d, eax
mov eax, 0xd1b71759
mov ecx, r10d
mov r10, rdx
mul ecx
mov r8d, edx
shr r8d, 0xd
imul eax, r8d, 0x2710
sub ecx, eax
mov eax, 0xd1b71759
mul r8d
shr edx, 0xd
imul eax, edx, 0x2710
sub r8d, eax
mov eax, r12d
mul ecx
shr edx, 5
imul eax, edx, 0x64
sub ecx, eax
add ecx, ecx
movzx eax, word [rcx + rbx + 0x146b30]
mov word [r11 - 2], ax
lea eax, [rdx + rdx]
movzx eax, word [rax + rbx + 0x146b30]
mov word [r11 - 4], ax
mov eax, r12d
mul r8d
shr edx, 5
imul eax, edx, 0x64
sub r8d, eax
add r8d, r8d
movzx eax, word [r8 + rbx + 0x146b30]
mov word [r11 - 6], ax
sub r11, 8
lea eax, [rdx + rdx]
movzx eax, word [rax + rbx + 0x146b30]
mov word [r11], ax
jmp 0x18002300d
mov eax, 0xd1b71759
mul r10d
shr edx, 0xd
imul eax, edx, 0x2710
sub r10d, eax
mov eax, r12d
mov ecx, r10d
mov r10d, edx
mul ecx
shr edx, 5
imul eax, edx, 0x64
sub ecx, eax
add ecx, ecx
movzx eax, word [rcx + rbx + 0x146b30]
lea ecx, [rdx + rdx]
mov word [r11 - 2], ax
sub r11, 4
movzx ecx, word [rcx + rbx + 0x146b30]
mov word [r11], cx
cmp r10d, 0x2710
jae 0x180022fc4
cmp r10d, 0x64
jb 0x180023042
mov eax, r12d
mul r10d
shr edx, 5
imul eax, edx, 0x64
sub r10d, eax
sub r11, 2
lea eax, [r10 + r10]
mov r10d, edx
movzx eax, word [rax + rbx + 0x146b30]
mov word [r11], ax
cmp r10d, 0xa
jb 0x18002305b
lea eax, [r10 + r10]
movzx eax, word [rax + rbx + 0x146b30]
mov word [r11 - 2], ax
jmp 0x180023063
add r10b, 0x30
mov byte [r11 - 1], r10b
test esi, esi
jle 0x180023072
mov ecx, r9d
mov r8, rsi
add rcx, rdi
jmp 0x1800230a2
je 0x1800230ac
test ebp, ebp
jle 0x180023090
movsxd rbx, ebp
lea rdx, [rdi + 1]
mov r8, rbx
mov rcx, rdi
call fcn.1800be460
mov byte [rbx + rdi], 0x2e
jmp 0x1800230ac
neg ebp
mov word [rdi], 0x2e30
test ebp, ebp
jle 0x1800230ac
lea rcx, [rdi + 2]
movsxd r8, ebp
mov edx, gethostbyname
call fcn.1800beb10
lea rax, [r15 + rdi]
jmp 0x1800232d7
xor ebp, ebp
mov esi, r9d
movabs rax, 0xffffffff00000000
lea rbx, [0x180000000]
mov r12d, 0x51eb851f
test rax, r10
je 0x1800231db
movabs rax, 0xabcc77118461cefd
mov ebp, 8
mul r10
shr rdx, 0x1a
imul eax, edx, 0x5f5e100
sub r10d, eax
mov eax, 0xd1b71759
mov ecx, r10d
mov r10, rdx
mul ecx
mov r8d, edx
shr r8d, 0xd
imul eax, r8d, 0x2710
sub ecx, eax
mov eax, 0xd1b71759
mul r8d
shr edx, 0xd
imul eax, edx, 0x2710
sub r8d, eax
mov eax, r12d
mul ecx
shr edx, 5
imul eax, edx, 0x64
sub ecx, eax
add ecx, ecx
movzx eax, word [rcx + rbx + 0x146b30]
mov word [rsi + rdi - 1], ax
lea eax, [rdx + rdx]
movzx eax, word [rax + rbx + 0x146b30]
mov word [rsi + rdi - 3], ax
mov eax, r12d
mul r8d
shr edx, 5
imul eax, edx, 0x64
sub r8d, eax
add r8d, r8d
movzx eax, word [r8 + rbx + 0x146b30]
mov word [rsi + rdi - 5], ax
lea eax, [rdx + rdx]
movzx eax, word [rax + rbx + 0x146b30]
mov word [rsi + rdi - 7], ax
jmp 0x1800231db
mov eax, 0xd1b71759
mov r8, rsi
mul r10d
shr edx, 0xd
imul eax, edx, 0x2710
sub r10d, eax
mov eax, r12d
mov ecx, r10d
mov r10d, edx
mul ecx
mov eax, ebp
sub r8, rax
shr edx, 5
imul eax, edx, 0x64
sub ecx, eax
add ecx, ecx
add ebp, 4
movzx eax, word [rcx + rbx + 0x146b30]
mov word [r8 + rdi - 1], ax
lea eax, [rdx + rdx]
movzx eax, word [rax + rbx + 0x146b30]
mov word [r8 + rdi - 3], ax
cmp r10d, 0x2710
jae 0x180023188
cmp r10d, 0x64
jb 0x180023212
mov eax, r12d
mul r10d
shr edx, 5
imul eax, edx, 0x64
sub r10d, eax
mov eax, ebp
sub rsi, rax
lea ecx, [r10 + r10]
mov r10d, edx
movzx eax, word [rcx + rbx + 0x146b30]
mov word [rsi + rdi - 1], ax
cmp r10d, 0xa
jb 0x180023233
lea edx, [r10 + r10]
lea eax, [rdx + 1]
mov al, byte [rax + rbx + 0x146b30]
mov byte [rdi + 2], al
mov r10b, byte [rdx + rbx + 0x146b30]
jmp 0x180023237
add r10b, 0x30
mov byte [rdi], r10b
cmp r9d, r15d
jbe 0x180023247
mov byte [rdi + 1], 0x2e
lea r15d, [r9 + 1]
mov eax, r15d
mov byte [rax + rdi], 0x65
lea eax, [r15 + 1]
mov ecx, eax
lea r9d, [rax + 1]
test r11d, r11d
jns 0x180023260
neg r11d
cmp dword [rsp + 0x80], 0
mov eax, 0x2d
lea edx, [rax - 2]
cmovge eax, edx
mov byte [rcx + rdi], al
cmp r11d, 0x64
jl 0x1800232bb
mov eax, 0x66666667
imul r11d
sar edx, 2
mov eax, edx
shr eax, 0x1f
add edx, eax
lea eax, [rdx + rdx]
movsxd rcx, eax
movzx eax, word [rcx + rbx + 0x146b30]
mov word [r9 + rdi], ax
mov al, dl
shl dl, 2
add al, dl
add al, al
sub r11b, al
lea eax, [r9 + 2]
add r11b, 0x30
mov byte [rax + rdi], r11b
jmp 0x1800232cf
lea eax, [r11 + r11]
movsxd rcx, eax
movzx eax, word [rcx + rbx + 0x146b30]
mov word [r9 + rdi], ax
mov rax, qword [rsp + 0x78]
add rax, rdi
and dword [r14 + 8], 0
mov qword [r14], rax
mov rbx, qword [rsp + 0x60]
mov rax, r14
mov rbp, qword [rsp + 0x68]
add rsp, 0x30
pop r15
pop r14
pop r12
pop rdi
pop rsi
ret