Function at 0x180032a70
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 0x180032fe0
cmp al, 0xd
je 0x180032fe0
lea r14, [rcx + 0x13c]
mov ecx, dword [r14]
lea ebx, [r12 + 4]
lea r15d, [r12 + 1]
lea eax, [rcx + 1]
mov dword [r14], eax
test ecx, ecx
jne 0x180032efd
mov dword [rdi + 0x148], r12d
mov rax, qword [rdi + 0x18]
mov rcx, qword [rax + 0x3e0]
mov eax, dword [rcx + 0x8c]
test al, 3
je 0x180032c9b
movzx eax, byte [rdx]
mov rbx, rdx
test al, al
je 0x180032b1a
cmp al, 0x20
je 0x180032b0f
cmp al, 9
jne 0x180032b1a
movzx eax, byte [rbx + 1]
inc rbx
test al, al
jne 0x180032b07
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 0x180032bd3
movsx edx, byte [rbx + 5]
mov ecx, edx
sub ecx, 0x31
je 0x180032c03
sub ecx, r15d
je 0x180032b67
cmp ecx, r15d
je 0x180032b67
lea rdx, str.Unsupported_HTTP_version_in_response
mov rcx, rdi
call fcn.18001e7e0
mov eax, r15d
jmp 0x180033069
movzx eax, byte [rbx + 6]
cmp al, 0x20
je 0x180032b73
cmp al, 9
jne 0x180032bd3
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 0x180032bd3
movsx edx, byte [rbx + 8]
lea eax, [rdx - 0x30]
cmp al, 9
ja 0x180032bd3
movsx r8d, byte [rbx + 9]
lea eax, [r8 - 0x30]
cmp al, 9
ja 0x180032bd3
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 0x180032d7e
sub al, 9
cmp al, 4
jbe 0x180032d7e
mov r8, rbp
mov rdx, rsi
mov rcx, rdi
call fcn.180031c20
cmp eax, r15d
jne 0x180032f28
mov dword [rdi + 0x14c], 0xc8
mov dword [rdi + 0x148], 0xa
jmp 0x180032d7e
cmp byte [rbx + 6], 0x2e
jne 0x180032c84
movsx ecx, byte [rbx + 7]
lea eax, [rcx - 0x30]
cmp al, r15b
ja 0x180032c84
movzx eax, byte [rbx + 8]
cmp al, 0x20
je 0x180032c21
cmp al, 9
jne 0x180032c84
lea eax, [rcx - 0x26]
mov dword [rdi + 0x148], eax
movsx ecx, byte [rbx + 9]
lea eax, [rcx - 0x30]
cmp al, 9
ja 0x180032c84
movsx edx, byte [rbx + 0xa]
lea eax, [rdx - 0x30]
cmp al, 9
ja 0x180032c84
movsx r8d, byte [rbx + 0xb]
lea eax, [r8 - 0x30]
cmp al, 9
ja 0x180032c84
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 0x180032d7e
cmp al, 9
je 0x180032d7e
sub al, 0xa
cmp al, 3
jbe 0x180032d7e
lea rdx, str.Unsupported_HTTP_1_subversion_in_response
mov rcx, rdi
call fcn.18001e7e0
mov eax, r15d
jmp 0x180033069
bt eax, 0x12
jae 0x180032f28
movzx eax, byte [rdx]
mov rbx, rsi
test al, al
je 0x180032cc3
nop
cmp al, 0x20
je 0x180032cb8
cmp al, 9
jne 0x180032cc3
movzx eax, byte [rbx + 1]
inc rbx
test al, al
jne 0x180032cb0
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 0x180032f28
movzx eax, byte [rbx + 5]
sub al, 0x30
cmp al, 9
ja 0x180032f2f
cmp byte [rbx + 6], 0x2e
jne 0x180032f2f
movzx eax, byte [rbx + 7]
sub al, 0x30
cmp al, 9
ja 0x180032f2f
movzx eax, byte [rbx + 8]
cmp al, 0x20
je 0x180032d16
cmp al, 9
jne 0x180032f2f
movsx ecx, byte [rbx + 9]
lea eax, [rcx - 0x30]
cmp al, 9
ja 0x180032f2f
movsx edx, byte [rbx + 0xa]
lea eax, [rdx - 0x30]
cmp al, 9
ja 0x180032f2f
movsx r8d, byte [rbx + 0xb]
lea eax, [r8 - 0x30]
cmp al, 9
ja 0x180032f2f
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 0x180032d74
cmp al, 9
je 0x180032d74
sub al, 0xa
cmp al, 3
ja 0x180032f2f
mov dword [rdi + 0x148], recvfrom
mov r9d, dword [rdi + 0x148]
mov ecx, r9d
mov rbx, qword [rdi + 0x18]
sub ecx, 0xa
je 0x180032dce
cmp ecx, r15d
je 0x180032dce
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.18001e7e0
mov eax, r15d
jmp 0x180033069
movzx eax, byte [rbx + 0x7e0]
test al, al
je 0x180032e1d
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 0x180032e1d
lea rdx, str.Version_mismatch__from_HTTP__u_to_HTTP__u_
mov rcx, rdi
call fcn.18001e7e0
mov eax, r15d
jmp 0x180033069
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 0x180032e55
cmp eax, dword [rdi + 0x148]
jle 0x180032e62
movzx eax, byte [rdi + 0x148]
mov byte [rdi + 0x1319], al
cmp qword [rdi + 0x1120], r12
je 0x180032e87
cmp byte [rdi + 0x131a], r12b
jne 0x180032e87
cmp dword [rdi + 0x14c], 0x1a0
jne 0x180032e87
mov byte [rdi + 0x1e3], r15b
cmp dword [rdi + 0x148], 0xa
jne 0x180032eaa
lea rdx, str.HTTP_1.0__assume_close_after_body
mov rcx, rdi
call fcn.18001e8d0
mov edx, r15d
mov rcx, rbx
call fcn.1800216b0
mov ecx, dword [rdi + 0x14c]
lea eax, [rcx - 0x64]
cmp eax, 0x63
setbe al
mov byte [rdi + 0x1e4], al
sub ecx, 0xcc
je 0x180032edc
cmp ecx, 0x64
jne 0x180032ef1
cmp byte [rdi + 0x538], r12b
je 0x180032edc
mov byte [rdi + 0x1414], r15b
mov qword [rdi + 0x100], r12
mov qword [rdi + 0x108], r12
mov byte [rdi + 0x1e4], r15b
mov ebx, ntohs
lea r14, [rdi + 0x13c]
mov r8, rbp
xor edx, edx
mov rcx, rsi
call sub.VCRUNTIME140.dll_memchr
test rax, rax
je 0x180032f39
lea rdx, str.Nul_byte_in_header
mov rcx, rdi
mov ebx, 8
call fcn.18001e7e0
jmp 0x180033067
mov byte [rdi + 0x1d9], r12b
mov eax, 8
jmp 0x180033069
mov ecx, dword [r14]
cmp ecx, 2
jl 0x180032f7d
movzx eax, byte [rsi]
cmp al, 0x20
je 0x180032f4c
cmp al, 9
jne 0x180032f51
cmp ecx, 2
jg 0x180032f7d
mov r8, rbp
mov edx, 0x3a
mov rcx, rsi
call sub.VCRUNTIME140.dll_memchr
test rax, rax
jne 0x180032f7d
lea rdx, str.Header_without_colon
mov rcx, rdi
lea ebx, [rax + 8]
call fcn.18001e7e0
jmp 0x180033067
mov r8, rbp
mov rdx, rsi
mov rcx, rdi
call fcn.180030020
test eax, eax
jne 0x180033069
mov r9, rbp
mov r8, rsi
mov edx, r15d
mov rcx, rdi
call fcn.18001e700
mov eax, dword [rdi + 0x14c]
sub eax, 0x64
cmp eax, 0x64
jae 0x180032fb5
or ebx, 0x20
mov r9, rbp
mov r8, rsi
mov edx, ebx
mov rcx, rdi
call fcn.18001fce0
test eax, eax
jne 0x180033069
xor r8d, r8d
mov rdx, rbp
mov rcx, rdi
call fcn.18002f540
jmp 0x180033069
lea rdx, [r8 + 1]
lea rcx, [rsp + 0x30]
call fcn.18000f870
mov r8, rbp
lea rcx, [rsp + 0x30]
mov rdx, rsi
call fcn.18000f830
test eax, eax
jne 0x180033069
lea rcx, [rdi + 0xc58]
call fcn.18000f8b0
lea rcx, [rsp + 0x30]
call fcn.18000f890
lea rcx, [rsp + 0x30]
mov rbx, rax
call fcn.18000f8a0
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.180031d60
mov rcx, qword [rsp + 0x98]
mov ebx, eax
add qword [r14], rcx
lea rcx, [rsp + 0x30]
call fcn.18000f840
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