Function at 0x1403c98b0
Capabilities:
Validate payment card number using luhn algorithm

Disassembly:
mov qword [rsp + 0x18], rbx
mov qword [rsp + 0x20], r9
push rbp
push rsi
push rdi
push r12
push r13
push r14
push r15
sub rsp, 0x20
mov r13, qword [rcx + 0x20]
lea r14, [rcx + 0xca0]
mov qword [r9], 0
mov r15, r9
mov r12, r8
mov rsi, rdx
mov rbx, rcx
mov ebp, 5
mov r8, r12
mov rcx, rsi
lea edx, [rbp + 5]
call fcn.1404dadc0
mov rdi, rax
mov rdx, rsi
mov rcx, r14
test rax, rax
je 0x1403ca0f6
sub rdi, rsi
inc rdi
mov r8, rdi
call fcn.1403ab220
test eax, eax
jne 0x1403ca006
add qword [r15], rdi
add rsi, rdi
sub r12, rdi
mov qword [rsp + 0x68], rsi
cmp dword [rbx + 0x12c], eax
jne 0x1403c99a4
mov rcx, r14
call fcn.140231c30
mov rcx, r14
mov rsi, rax
call fcn.14021b440
mov rcx, qword [r13 + 0x360]
mov rdx, rax
test dword [rcx + 0x84], 0x40000
je 0x1403c9989
xor edi, edi
lea rcx, str.RTSP_
cmp rsi, rbp
cmova rsi, rbp
setae dil
mov r8, rsi
call fcn.1403c0c10
test eax, eax
mov ecx, 2
cmovne ecx, edi
jmp 0x1403c9996
mov r8, rsi
mov rcx, rbx
call fcn.1403c8e60
mov ecx, eax
cmp ecx, 2
je 0x1403ca01b
mov rsi, qword [rsp + 0x68]
lea rcx, [rbx + 0xca0]
call fcn.14021b440
mov rcx, r14
mov r15, rax
call fcn.140231c30
movzx ecx, byte [r15]
mov rbp, rax
cmp cl, 0xa
je 0x1403c9ee5
cmp cl, 0xd
je 0x1403c9ee5
mov edx, dword [rbx + 0x12c]
mov edi, 4
mov rsi, r14
lea ecx, [rdx + 1]
mov dword [rbx + 0x12c], ecx
test edx, edx
jne 0x1403c9dab
xor esi, esi
mov dword [rbx + 0x138], esi
mov rax, qword [r13 + 0x360]
mov ecx, dword [rax + 0x84]
test cl, 3
je 0x1403c9ba2
movzx eax, byte [r15]
mov rdi, r15
test al, al
je 0x1403c9a33
nop dword [rax]
cmp al, 0x20
je 0x1403c9a28
cmp al, 9
jne 0x1403c9a33
movzx eax, byte [rdi + 1]
inc rdi
test al, al
jne 0x1403c9a20
mov r8d, 5
lea rdx, str.HTTP_
mov rcx, rdi
call fcn.1404b7690
test eax, eax
jne 0x1403c9ad9
movsx edx, byte [rdi + 5]
mov ecx, edx
sub ecx, 0x31
je 0x1403c9b09
sub ecx, 1
je 0x1403c9a6d
cmp ecx, 1
jne 0x1403ca04f
movzx eax, byte [rdi + 6]
cmp al, 0x20
je 0x1403c9a79
cmp al, 9
jne 0x1403c9ad9
lea eax, [rdx - 0x30]
lea ecx, [rax + rax*4]
add ecx, ecx
mov dword [rbx + 0x138], ecx
movsx ecx, byte [rdi + 7]
lea eax, [rcx - 0x30]
cmp al, 9
ja 0x1403c9ad9
movsx edx, byte [rdi + 8]
lea eax, [rdx - 0x30]
cmp al, 9
ja 0x1403c9ad9
movsx r8d, byte [rdi + 9]
lea eax, [r8 - 0x30]
cmp al, 9
ja 0x1403c9ad9
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 [rbx + 0x13c], ecx
movzx eax, byte [rdi + 0xa]
cmp al, 0x20
je 0x1403c9c85
sub al, 9
cmp al, 4
jbe 0x1403c9c85
mov r8, rbp
mov rdx, r15
mov rcx, rbx
call fcn.1403c8e60
cmp eax, 1
jne 0x1403ca09b
mov dword [rbx + 0x13c], 0xc8
mov dword [rbx + 0x138], 0xa
jmp 0x1403c9c85
cmp byte [rdi + 6], 0x2e
jne 0x1403c9b89
movsx ecx, byte [rdi + 7]
lea eax, [rcx - 0x30]
cmp al, 1
ja 0x1403c9b89
movzx eax, byte [rdi + 8]
cmp al, 0x20
je 0x1403c9b26
cmp al, 9
jne 0x1403c9b89
lea eax, [rcx - 0x26]
mov dword [rbx + 0x138], eax
movsx ecx, byte [rdi + 9]
lea eax, [rcx - 0x30]
cmp al, 9
ja 0x1403c9b89
movsx edx, byte [rdi + 0xa]
lea eax, [rdx - 0x30]
cmp al, 9
ja 0x1403c9b89
movsx r8d, byte [rdi + 0xb]
lea eax, [r8 - 0x30]
cmp al, 9
ja 0x1403c9b89
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 [rbx + 0x13c], ecx
movzx eax, byte [rdi + 0xc]
cmp al, 0x20
je 0x1403c9c85
cmp al, 9
je 0x1403c9c85
sub al, 0xa
cmp al, 3
jbe 0x1403c9c85
lea rdx, str.Unsupported_HTTP_1_subversion_in_response
mov rcx, rbx
call fcn.1403b8d60
mov eax, 1
jmp 0x1403ca006
bt ecx, 0x12
jae 0x1403ca09b
movzx eax, byte [r15]
mov rdi, r15
test al, al
je 0x1403c9bca
cmp al, 0x20
je 0x1403c9bbf
cmp al, 9
jne 0x1403c9bca
movzx eax, byte [rdi + 1]
inc rdi
test al, al
jne 0x1403c9bb7
mov r8d, 5
lea rdx, str.RTSP_
mov rcx, rdi
call fcn.1404b7690
test eax, eax
jne 0x1403ca09b
movzx eax, byte [rdi + 5]
sub al, 0x30
cmp al, 9
ja 0x1403ca196
cmp byte [rdi + 6], 0x2e
jne 0x1403ca196
movzx eax, byte [rdi + 7]
sub al, 0x30
cmp al, 9
ja 0x1403ca196
movzx eax, byte [rdi + 8]
cmp al, 0x20
je 0x1403c9c1d
cmp al, 9
jne 0x1403ca196
movsx ecx, byte [rdi + 9]
lea eax, [rcx - 0x30]
cmp al, 9
ja 0x1403ca196
movsx edx, byte [rdi + 0xa]
lea eax, [rdx - 0x30]
cmp al, 9
ja 0x1403ca196
movsx r8d, byte [rdi + 0xb]
lea eax, [r8 - 0x30]
cmp al, 9
ja 0x1403ca196
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 [rbx + 0x13c], ecx
movzx eax, byte [rdi + 0xc]
cmp al, 0x20
je 0x1403c9c7b
cmp al, 9
je 0x1403c9c7b
sub al, 0xa
cmp al, 3
ja 0x1403ca196
mov dword [rbx + 0x138], reloc.WS2_32.dll_inet_addr
mov r9d, dword [rbx + 0x138]
mov ecx, r9d
sub ecx, 0xa
je 0x1403c9c9d
cmp ecx, 1
jne 0x1403ca065
mov byte [r13 + 0x778], r9b
mov eax, dword [rbx + 0x13c]
mov dword [rbx + 0x1310], eax
mov eax, dword [rbx + 0x138]
mov dword [rbx + 0x1318], eax
movzx eax, byte [rbx + 0x138]
mov byte [r13 + 0x778], al
movzx eax, byte [rbx + 0x12f1]
test al, al
je 0x1403c9cdd
cmp eax, dword [rbx + 0x138]
jle 0x1403c9cea
movzx eax, byte [rbx + 0x138]
mov byte [rbx + 0x12f1], al
cmp qword [rbx + 0x10f8], rsi
je 0x1403c9d0f
cmp byte [rbx + 0x12f2], sil
jne 0x1403c9d0f
cmp dword [rbx + 0x13c], 0x1a0
jne 0x1403c9d0f
mov byte [rbx + 0x1da], 1
mov eax, dword [rbx + 0x138]
cmp eax, 0xa
jne 0x1403c9d38
lea rdx, str.HTTP_1.0__assume_close_after_body
mov rcx, rbx
call fcn.1403b8e50
mov edx, 1
mov rcx, r13
call fcn.1403bba90
jmp 0x1403c9d5c
cmp eax, 0x14
je 0x1403c9d4f
cmp dword [rbx + 0x144], 2
jne 0x1403c9d5c
cmp dword [rbx + 0x13c], 0x65
jne 0x1403c9d5c
mov rax, qword [r13 + 0x740]
mov dword [rax], 2
mov ecx, dword [rbx + 0x13c]
lea eax, [rcx - 0x64]
cmp eax, 0x63
setbe al
mov byte [rbx + 0x1db], al
sub ecx, 0xcc
je 0x1403c9d8e
cmp ecx, 0x64
jne 0x1403c9da3
cmp byte [rbx + 0x530], sil
je 0x1403c9d8e
mov byte [rbx + 0x13ec], 1
mov qword [rbx + 0xf0], rsi
mov qword [rbx + 0xf8], rsi
mov byte [rbx + 0x1db], 1
mov edi, reloc.OLEAUT32.dll_VariantTimeToDosDateTime
mov rsi, r14
lea rcx, [rbx + 0xca0]
call fcn.14021b440
mov rcx, rsi
mov r14, rax
call fcn.140231c30
mov r8, rax
xor edx, edx
mov rcx, r14
mov rsi, rax
call fcn.1404dadc0
test rax, rax
jne 0x1403ca0c2
mov edx, dword [rbx + 0x12c]
cmp edx, 2
jl 0x1403c9e12
movzx ecx, byte [r14]
cmp cl, 0x20
je 0x1403c9df4
cmp cl, 9
jne 0x1403c9df9
cmp edx, 2
jg 0x1403c9e12
mov r8, rsi
mov edx, 0x3a
mov rcx, r14
call fcn.1404dadc0
test rax, rax
je 0x1403ca0a7
mov r9, rbp
mov r8, r15
mov rdx, r13
mov rcx, rbx
call fcn.1403c72f0
test eax, eax
jne 0x1403ca006
mov r9, rbp
lea edx, [rax + 1]
mov r8, r15
mov rcx, rbx
call fcn.1403b8c80
mov eax, dword [rbx + 0x13c]
sub eax, 0x64
cmp eax, 0x64
jae 0x1403c9e4d
or edi, 0x20
mov r9, rbp
mov r8, r15
mov edx, edi
mov rcx, rbx
call fcn.1403b9e60
test eax, eax
jne 0x1403ca006
mov edx, dword [rbx + 0x124]
mov r9d, 0x4b000
cmp rbp, r9
jae 0x1403c9ead
mov ecx, dword [rbx + 0x1358]
lea eax, [rdx + rbp]
add dword [rbx + 0x120], ebp
add ecx, ebp
mov dword [rbx + 0x1358], ecx
mov dword [rbx + 0x124], eax
cmp eax, r9d
ja 0x1403c9ea8
cmp ecx, 0x5dc000
jbe 0x1403c9eba
mov r9d, 0x5dc000
mov eax, ecx
mov r8d, eax
jmp 0x1403c9eb1
lea r8, [rdx + rbp]
test r8, r8
jne 0x1403ca0dd
lea rcx, [rbx + 0xca0]
call fcn.1403ab280
test r12, r12
je 0x1403c9fe7
mov rsi, qword [rsp + 0x68]
lea r14, [rbx + 0xca0]
mov r15, qword [rsp + 0x78]
jmp 0x1403c98e7
mov r9, rbp
mov r8, r15
mov edx, 1
mov rcx, rbx
call fcn.1403b8c80
mov eax, dword [rbx + 0x13c]
mov edx, 4
sub eax, 0x64
mov r9, rbp
cmp eax, 0x64
mov r8, r15
mov eax, 0x24
mov rcx, rbx
cmovb edx, eax
call fcn.1403b9e60
test eax, eax
jne 0x1403ca006
mov ecx, dword [rbx + 0x124]
mov r9d, 0x4b000
cmp rbp, r9
jae 0x1403c9f74
mov r8d, dword [rbx + 0x1358]
lea edx, [rcx + rbp]
add dword [rbx + 0x120], ebp
add r8d, ebp
mov dword [rbx + 0x1358], r8d
mov dword [rbx + 0x124], edx
cmp edx, r9d
ja 0x1403c9f6f
cmp r8d, 0x5dc000
jbe 0x1403c9f81
mov r9d, 0x5dc000
mov edx, r8d
mov r8d, edx
jmp 0x1403c9f78
lea r8, [rcx + rbp]
test r8, r8
jne 0x1403ca0dd
lea rcx, [rbx + 0xca0]
call fcn.1403ab280
mov eax, dword [rbx + 0x13c]
sub eax, 0x64
cmp eax, 0x63
ja 0x1403c9fa3
mov eax, dword [rbx + 0x120]
jmp 0x1403c9fa5
xor eax, eax
lea r9, [rsp + 0x60]
mov dword [rbx + 0x128], eax
mov r8, r12
mov rdx, rsi
mov rcx, rbx
call fcn.1403c8fa0
test eax, eax
jne 0x1403ca006
mov rax, qword [rsp + 0x60]
mov r15, qword [rsp + 0x78]
sub r12, rax
add rsi, rax
add qword [r15], rax
cmp byte [rbx + 0x1d1], 0
je 0x1403c9fe7
test r12, r12
jne 0x1403c98e7
xor bpl, bpl
cmp byte [rbx + 0x1d1], 0
jne 0x1403ca004
test bpl, bpl
jne 0x1403ca004
lea rcx, [rbx + 0xca0]
call fcn.1403ab230
xor eax, eax
mov rbx, qword [rsp + 0x70]
add rsp, 0x20
pop r15
pop r14
pop r13
pop r12
pop rdi
pop rsi
pop rbp
ret
mov edx, 2
mov rcx, r13
call fcn.1403bba90
cmp byte [r13 + 0x778], 0xa
jae 0x1403ca187
cmp byte [rbx + 0xac9], 0
je 0x1403ca16e
mov byte [rbx + 0x1d1], 0
mov bpl, 1
jmp 0x1403c9fea
lea rdx, str.Unsupported_HTTP_version_in_response
mov rcx, rbx
call fcn.1403b8d60
mov eax, 1
jmp 0x1403ca006
mov eax, 0x66666667
imul r9d
sar edx, 2
mov ecx, edx
shr ecx, 0x1f
add edx, ecx
mov r8d, edx
lea ecx, [rdx + rdx*4]
add ecx, ecx
lea rdx, str.Unsupported_HTTP_version___u._d__in_response
sub r9d, ecx
mov rcx, rbx
call fcn.1403b8d60
mov eax, 1
jmp 0x1403ca006
mov byte [rbx + 0x1d1], sil
jmp 0x1403c9fe7
lea rdx, str.Header_without_colon
mov rcx, rbx
mov edi, 8
call fcn.1403b8d60
mov eax, edi
jmp 0x1403ca006
lea rdx, str.Nul_byte_in_header
mov rcx, rbx
mov edi, 8
call fcn.1403b8d60
mov eax, edi
jmp 0x1403ca006
lea rdx, str.Too_large_response_headers:__zu____u
mov rcx, rbx
call fcn.1403b8d60
mov eax, reloc.WS2_32.dll_getservbyport
jmp 0x1403ca006
mov r8, r12
call fcn.1403ab220
test eax, eax
jne 0x1403ca006
add qword [r15], r12
cmp dword [rbx + 0x12c], eax
jne 0x1403c9fe7
mov rcx, r14
call fcn.140231c30
mov rcx, r14
mov rdi, rax
call fcn.14021b440
mov r8, rax
mov r9, rdi
mov rdx, r13
mov rcx, rbx
call fcn.1403c8f30
cmp eax, 2
jne 0x1403c9fe7
mov edx, eax
mov byte [rbx + 0x1d1], 0
mov rcx, r13
call fcn.1403bba90
cmp byte [r13 + 0x778], 0xa
jae 0x1403ca187
cmp byte [rbx + 0xac9], 0
je 0x1403ca16e
mov bpl, 1
jmp 0x1403c9fea
lea rdx, str.Received_HTTP_0.9_when_not_allowed
mov rcx, rbx
call fcn.1403b8d60
mov eax, 1
jmp 0x1403ca006
lea rdx, str.Invalid_status_line
mov rcx, rbx
call fcn.1403b8d60
mov eax, 8
jmp 0x1403ca006