Function at 0x1400daa00
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 r8, r12
mov edx, 0xa
mov rcx, rsi
mov ebp, 5
call fcn.14010fa60
mov rdi, rax
mov rdx, rsi
mov rcx, r14
test rax, rax
je 0x1400db24a
sub rdi, rsi
inc rdi
mov r8, rdi
call fcn.1400bf280
test eax, eax
jne 0x1400db15a
add qword [r15], rdi
add rsi, rdi
sub r12, rdi
mov qword [rsp + 0x68], rsi
cmp dword [rbx + 0x12c], eax
jne 0x1400daaf6
mov rcx, r14
call fcn.1400bf2e0
mov rcx, r14
mov rsi, rax
call fcn.1400bf2f0
mov rcx, qword [r13 + 0x360]
mov rdx, rax
test dword [rcx + 0x84], 0x40000
je 0x1400daadb
xor edi, edi
lea rcx, str.RTSP_
cmp rsi, rbp
cmova rsi, rbp
setae dil
mov r8, rsi
call fcn.1400d13d0
test eax, eax
mov ecx, 2
cmovne ecx, edi
jmp 0x1400daae8
mov r8, rsi
mov rcx, rbx
call fcn.1400da070
mov ecx, eax
cmp ecx, 2
je 0x1400db16f
mov rsi, qword [rsp + 0x68]
lea rcx, [rbx + 0xca0]
call fcn.1400bf2f0
mov rcx, r14
mov r15, rax
call fcn.1400bf2e0
movzx ecx, byte [r15]
mov rbp, rax
cmp cl, 0xa
je 0x1400db039
cmp cl, 0xd
je 0x1400db039
mov edx, dword [rbx + 0x12c]
mov edi, 4
mov rsi, r14
lea ecx, [rdx + 1]
mov dword [rbx + 0x12c], ecx
test edx, edx
jne 0x1400daefd
xor esi, esi
mov dword [rbx + 0x138], esi
mov rax, qword [r13 + 0x360]
mov ecx, dword [rax + 0x84]
test cl, 3
je 0x1400dacf3
movzx eax, byte [r15]
mov rdi, r15
test al, al
je 0x1400dab84
nop
cmp al, 0x20
je 0x1400dab79
cmp byte [rdi], 9
jne 0x1400dab84
movzx eax, byte [rdi + 1]
inc rdi
test al, al
jne 0x1400dab70
mov r8d, 5
lea rdx, str.HTTP_
mov rcx, rdi
call fcn.1401219d0
test eax, eax
jne 0x1400dac2a
movsx edx, byte [rdi + 5]
mov ecx, edx
sub ecx, 0x31
je 0x1400dac5a
sub ecx, 1
je 0x1400dabbe
cmp ecx, 1
jne 0x1400db1a3
movzx eax, byte [rdi + 6]
cmp al, 0x20
je 0x1400dabca
cmp al, 9
jne 0x1400dac2a
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 0x1400dac2a
movsx edx, byte [rdi + 8]
lea eax, [rdx - 0x30]
cmp al, 9
ja 0x1400dac2a
movsx r8d, byte [rdi + 9]
lea eax, [r8 - 0x30]
cmp al, 9
ja 0x1400dac2a
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 0x1400dadd7
sub al, 9
cmp al, 4
jbe 0x1400dadd7
mov r8, rbp
mov rdx, r15
mov rcx, rbx
call fcn.1400da070
cmp eax, 1
jne 0x1400db1ef
mov dword [rbx + 0x13c], reloc.WLDAP32.dll_Ordinal_200
mov dword [rbx + 0x138], 0xa
jmp 0x1400dadd7
cmp byte [rdi + 6], 0x2e
jne 0x1400dacda
movsx ecx, byte [rdi + 7]
lea eax, [rcx - 0x30]
cmp al, 1
ja 0x1400dacda
movzx eax, byte [rdi + 8]
cmp al, 0x20
je 0x1400dac77
cmp al, 9
jne 0x1400dacda
lea eax, [rcx - 0x26]
mov dword [rbx + 0x138], eax
movsx ecx, byte [rdi + 9]
lea eax, [rcx - 0x30]
cmp al, 9
ja 0x1400dacda
movsx edx, byte [rdi + 0xa]
lea eax, [rdx - 0x30]
cmp al, 9
ja 0x1400dacda
movsx r8d, byte [rdi + 0xb]
lea eax, [r8 - 0x30]
cmp al, 9
ja 0x1400dacda
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 0x1400dadd7
cmp al, 9
je 0x1400dadd7
sub al, 0xa
cmp al, 3
jbe 0x1400dadd7
lea rdx, str.Unsupported_HTTP_1_subversion_in_response
mov rcx, rbx
call fcn.1400caed0
mov eax, 1
jmp 0x1400db15a
bt ecx, 0x12
jae 0x1400db1ef
movzx eax, byte [r15]
mov rdi, r15
test al, al
je 0x1400dad1c
cmp al, 0x20
je 0x1400dad11
cmp byte [rdi], 9
jne 0x1400dad1c
movzx eax, byte [rdi + 1]
inc rdi
test al, al
jne 0x1400dad08
mov r8d, 5
lea rdx, str.RTSP_
mov rcx, rdi
call fcn.1401219d0
test eax, eax
jne 0x1400db1ef
movzx eax, byte [rdi + 5]
sub al, 0x30
cmp al, 9
ja 0x1400db2c0
cmp byte [rdi + 6], 0x2e
jne 0x1400db2c0
movzx eax, byte [rdi + 7]
sub al, 0x30
cmp al, 9
ja 0x1400db2c0
movzx eax, byte [rdi + 8]
cmp al, 0x20
je 0x1400dad6f
cmp al, 9
jne 0x1400db2c0
movsx ecx, byte [rdi + 9]
lea eax, [rcx - 0x30]
cmp al, 9
ja 0x1400db2c0
movsx edx, byte [rdi + 0xa]
lea eax, [rdx - 0x30]
cmp al, 9
ja 0x1400db2c0
movsx r8d, byte [rdi + 0xb]
lea eax, [r8 - 0x30]
cmp al, 9
ja 0x1400db2c0
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 0x1400dadcd
cmp al, 9
je 0x1400dadcd
sub al, 0xa
cmp al, 3
ja 0x1400db2c0
mov dword [rbx + 0x138], recvfrom
mov r9d, dword [rbx + 0x138]
mov ecx, r9d
sub ecx, 0xa
je 0x1400dadef
cmp ecx, 1
jne 0x1400db1b9
mov byte [r13 + 0x544], r9b
mov eax, dword [rbx + 0x13c]
mov dword [rbx + 0x1330], eax
mov eax, dword [rbx + 0x138]
mov dword [rbx + 0x1338], eax
movzx eax, byte [rbx + 0x138]
mov byte [r13 + 0x544], al
movzx eax, byte [rbx + 0x1311]
test al, al
je 0x1400dae2f
cmp eax, dword [rbx + 0x138]
jle 0x1400dae3c
movzx eax, byte [rbx + 0x138]
mov byte [rbx + 0x1311], al
cmp qword [rbx + 0x1118], rsi
je 0x1400dae61
cmp byte [rbx + 0x1312], sil
jne 0x1400dae61
cmp dword [rbx + 0x13c], 0x1a0
jne 0x1400dae61
mov byte [rbx + 0x1da], 1
mov eax, dword [rbx + 0x138]
cmp eax, 0xa
jne 0x1400dae8a
lea rdx, str.HTTP_1.0__assume_close_after_body
mov rcx, rbx
call fcn.1400cafc0
mov edx, 1
mov rcx, r13
call fcn.1400cdbb0
jmp 0x1400daeae
cmp eax, 0x14
je 0x1400daea1
cmp dword [rbx + 0x144], 2
jne 0x1400daeae
cmp dword [rbx + 0x13c], 0x65
jne 0x1400daeae
mov rax, qword [r13 + 0x510]
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 0x1400daee0
cmp ecx, 0x64
jne 0x1400daef5
cmp byte [rbx + 0x530], sil
je 0x1400daee0
mov byte [rbx + 0x140c], 1
mov qword [rbx + 0xf0], rsi
mov qword [rbx + 0xf8], rsi
mov byte [rbx + 0x1db], 1
mov edi, ntohs
mov rsi, r14
lea rcx, [rbx + 0xca0]
call fcn.1400bf2f0
mov rcx, rsi
mov r14, rax
call fcn.1400bf2e0
mov r8, rax
xor edx, edx
mov rcx, r14
mov rsi, rax
call fcn.14010fa60
test rax, rax
jne 0x1400db216
mov edx, dword [rbx + 0x12c]
cmp edx, 2
jl 0x1400daf64
movzx ecx, byte [r14]
cmp cl, 0x20
je 0x1400daf46
cmp cl, 9
jne 0x1400daf4b
cmp edx, 2
jg 0x1400daf64
mov r8, rsi
mov edx, Ordinal_60
mov rcx, r14
call fcn.14010fa60
test rax, rax
je 0x1400db1fb
mov r9, rbp
mov r8, r15
mov rdx, r13
mov rcx, rbx
call fcn.1400d8670
test eax, eax
jne 0x1400db15a
mov r9, rbp
mov r8, r15
mov edx, 1
mov rcx, rbx
call fcn.1400cade0
mov eax, dword [rbx + 0x13c]
sub eax, 0x64
cmp eax, 0x64
jae 0x1400dafa1
or edi, 0x20
mov r9, rbp
mov r8, r15
mov edx, edi
mov rcx, rbx
call fcn.1400cc000
test eax, eax
jne 0x1400db15a
mov edx, dword [rbx + 0x124]
mov r9d, 0x4b000
cmp rbp, r9
jae 0x1400db001
mov ecx, dword [rbx + 0x1378]
lea eax, [rdx + rbp]
add dword [rbx + 0x120], ebp
add ecx, ebp
mov dword [rbx + 0x1378], ecx
mov dword [rbx + 0x124], eax
cmp eax, r9d
ja 0x1400daffc
cmp ecx, 0x5dc000
jbe 0x1400db00e
mov r9d, 0x5dc000
mov eax, ecx
mov r8d, eax
jmp 0x1400db005
lea r8, [rdx + rbp]
test r8, r8
jne 0x1400db231
lea rcx, [rbx + 0xca0]
call fcn.1400bf300
test r12, r12
je 0x1400db13b
mov rsi, qword [rsp + 0x68]
lea r14, [rbx + 0xca0]
mov r15, qword [rsp + 0x78]
jmp 0x1400daa37
mov r9, rbp
mov r8, r15
mov edx, 1
mov rcx, rbx
call fcn.1400cade0
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.1400cc000
test eax, eax
jne 0x1400db15a
mov ecx, dword [rbx + 0x124]
mov r9d, 0x4b000
cmp rbp, r9
jae 0x1400db0c8
mov r8d, dword [rbx + 0x1378]
lea edx, [rcx + rbp]
add dword [rbx + 0x120], ebp
add r8d, ebp
mov dword [rbx + 0x1378], r8d
mov dword [rbx + 0x124], edx
cmp edx, r9d
ja 0x1400db0c3
cmp r8d, 0x5dc000
jbe 0x1400db0d5
mov r9d, 0x5dc000
mov edx, r8d
mov r8d, edx
jmp 0x1400db0cc
lea r8, [rcx + rbp]
test r8, r8
jne 0x1400db231
lea rcx, [rbx + 0xca0]
call fcn.1400bf300
mov eax, dword [rbx + 0x13c]
sub eax, 0x64
cmp eax, 0x63
ja 0x1400db0f7
mov eax, dword [rbx + 0x120]
jmp 0x1400db0f9
xor eax, eax
lea r9, [rsp + 0x60]
mov dword [rbx + 0x128], eax
mov r8, r12
mov rdx, rsi
mov rcx, rbx
call fcn.1400da1b0
test eax, eax
jne 0x1400db15a
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 0x1400db13b
test r12, r12
jne 0x1400daa37
xor bpl, bpl
cmp byte [rbx + 0x1d1], 0
jne 0x1400db158
test bpl, bpl
jne 0x1400db158
lea rcx, [rbx + 0xca0]
call fcn.1400bf290
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.1400cdbb0
cmp byte [r13 + 0x544], 0xa
jae 0x1400db2b1
cmp byte [rbx + 0xac8], 0
je 0x1400db2d7
mov byte [rbx + 0x1d1], 0
mov bpl, 1
jmp 0x1400db13e
lea rdx, str.Unsupported_HTTP_version_in_response
mov rcx, rbx
call fcn.1400caed0
mov eax, 1
jmp 0x1400db15a
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.1400caed0
mov eax, 1
jmp 0x1400db15a
mov byte [rbx + 0x1d1], sil
jmp 0x1400db13b
lea rdx, str.Header_without_colon
mov rcx, rbx
mov edi, 8
call fcn.1400caed0
mov eax, edi
jmp 0x1400db15a
lea rdx, str.Nul_byte_in_header
mov rcx, rbx
mov edi, 8
call fcn.1400caed0
mov eax, edi
jmp 0x1400db15a
lea rdx, str.Too_large_response_headers:__zu____u
mov rcx, rbx
call fcn.1400caed0
mov eax, gethostname
jmp 0x1400db15a
mov r8, r12
call fcn.1400bf280
test eax, eax
jne 0x1400db15a
add qword [r15], r12
cmp dword [rbx + 0x12c], eax
jne 0x1400db13b
mov rcx, r14
call fcn.1400bf2e0
mov rcx, r14
mov rdi, rax
call fcn.1400bf2f0
mov r8, rax
mov r9, rdi
mov rdx, r13
mov rcx, rbx
call fcn.1400da140
cmp eax, 2
jne 0x1400db13b
mov edx, eax
mov byte [rbx + 0x1d1], 0
mov rcx, r13
call fcn.1400cdbb0
cmp byte [r13 + 0x544], 0xa
jb 0x1400db2ca
lea rdx, str.Invalid_status_line
mov rcx, rbx
call fcn.1400caed0
mov eax, 8
jmp 0x1400db15a
cmp byte [rbx + 0xac8], 0
jne 0x1400db19e
lea rdx, str.Received_HTTP_0.9_when_not_allowed
mov rcx, rbx
call fcn.1400caed0
mov eax, 1
jmp 0x1400db15a