Function at 0x1400308b0
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.14006bcda
mov rdi, rax
mov rdx, rsi
mov rcx, r14
test rax, rax
je 0x1400310f6
sub rdi, rsi
inc rdi
mov r8, rdi
call fcn.1400122f0
test eax, eax
jne 0x140031006
add qword [r15], rdi
add rsi, rdi
sub r12, rdi
mov qword [rsp + 0x68], rsi
cmp dword [rbx + 0x12c], eax
jne 0x1400309a4
mov rcx, r14
call fcn.140012350
mov rcx, r14
mov rsi, rax
call fcn.140001690
mov rcx, qword [r13 + 0x360]
mov rdx, rax
test dword [rcx + 0x84], 0x40000
je 0x140030989
xor edi, edi
lea rcx, str.RTSP_
cmp rsi, rbp
cmova rsi, rbp
setae dil
mov r8, rsi
call fcn.140027c00
test eax, eax
mov ecx, 2
cmovne ecx, edi
jmp 0x140030996
mov r8, rsi
mov rcx, rbx
call fcn.14002fe60
mov ecx, eax
cmp ecx, 2
je 0x14003101b
mov rsi, qword [rsp + 0x68]
lea rcx, [rbx + 0xca0]
call fcn.140001690
mov rcx, r14
mov r15, rax
call fcn.140012350
movzx ecx, byte [r15]
mov rbp, rax
cmp cl, 0xa
je 0x140030ee5
cmp cl, 0xd
je 0x140030ee5
mov edx, dword [rbx + 0x12c]
mov edi, 4
mov rsi, r14
lea ecx, [rdx + 1]
mov dword [rbx + 0x12c], ecx
test edx, edx
jne 0x140030dab
xor esi, esi
mov dword [rbx + 0x138], esi
mov rax, qword [r13 + 0x360]
mov ecx, dword [rax + 0x84]
test cl, 3
je 0x140030ba2
movzx eax, byte [r15]
mov rdi, r15
test al, al
je 0x140030a33
nop dword [rax]
cmp al, 0x20
je 0x140030a28
cmp al, 9
jne 0x140030a33
movzx eax, byte [rdi + 1]
inc rdi
test al, al
jne 0x140030a20
mov r8d, 5
lea rdx, str.HTTP_
mov rcx, rdi
call sub.api_ms_win_crt_string_l1_1_0.dll_strncmp
test eax, eax
jne 0x140030ad9
movsx edx, byte [rdi + 5]
mov ecx, edx
sub ecx, 0x31
je 0x140030b09
sub ecx, 1
je 0x140030a6d
cmp ecx, 1
jne 0x14003104f
movzx eax, byte [rdi + 6]
cmp al, 0x20
je 0x140030a79
cmp al, 9
jne 0x140030ad9
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 0x140030ad9
movsx edx, byte [rdi + 8]
lea eax, [rdx - 0x30]
cmp al, 9
ja 0x140030ad9
movsx r8d, byte [rdi + 9]
lea eax, [r8 - 0x30]
cmp al, 9
ja 0x140030ad9
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 0x140030c85
sub al, 9
cmp al, 4
jbe 0x140030c85
mov r8, rbp
mov rdx, r15
mov rcx, rbx
call fcn.14002fe60
cmp eax, 1
jne 0x14003109b
mov dword [rbx + 0x13c], 0xc8
mov dword [rbx + 0x138], 0xa
jmp 0x140030c85
cmp byte [rdi + 6], 0x2e
jne 0x140030b89
movsx ecx, byte [rdi + 7]
lea eax, [rcx - 0x30]
cmp al, 1
ja 0x140030b89
movzx eax, byte [rdi + 8]
cmp al, 0x20
je 0x140030b26
cmp al, 9
jne 0x140030b89
lea eax, [rcx - 0x26]
mov dword [rbx + 0x138], eax
movsx ecx, byte [rdi + 9]
lea eax, [rcx - 0x30]
cmp al, 9
ja 0x140030b89
movsx edx, byte [rdi + 0xa]
lea eax, [rdx - 0x30]
cmp al, 9
ja 0x140030b89
movsx r8d, byte [rdi + 0xb]
lea eax, [r8 - 0x30]
cmp al, 9
ja 0x140030b89
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 0x140030c85
cmp al, 9
je 0x140030c85
sub al, 0xa
cmp al, 3
jbe 0x140030c85
lea rdx, str.Unsupported_HTTP_1_subversion_in_response
mov rcx, rbx
call fcn.14001fe40
mov eax, 1
jmp 0x140031006
bt ecx, 0x12
jae 0x14003109b
movzx eax, byte [r15]
mov rdi, r15
test al, al
je 0x140030bca
cmp al, 0x20
je 0x140030bbf
cmp al, 9
jne 0x140030bca
movzx eax, byte [rdi + 1]
inc rdi
test al, al
jne 0x140030bb7
mov r8d, 5
lea rdx, str.RTSP_
mov rcx, rdi
call sub.api_ms_win_crt_string_l1_1_0.dll_strncmp
test eax, eax
jne 0x14003109b
movzx eax, byte [rdi + 5]
sub al, 0x30
cmp al, 9
ja 0x140031196
cmp byte [rdi + 6], 0x2e
jne 0x140031196
movzx eax, byte [rdi + 7]
sub al, 0x30
cmp al, 9
ja 0x140031196
movzx eax, byte [rdi + 8]
cmp al, 0x20
je 0x140030c1d
cmp al, 9
jne 0x140031196
movsx ecx, byte [rdi + 9]
lea eax, [rcx - 0x30]
cmp al, 9
ja 0x140031196
movsx edx, byte [rdi + 0xa]
lea eax, [rdx - 0x30]
cmp al, 9
ja 0x140031196
movsx r8d, byte [rdi + 0xb]
lea eax, [r8 - 0x30]
cmp al, 9
ja 0x140031196
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 0x140030c7b
cmp al, 9
je 0x140030c7b
sub al, 0xa
cmp al, 3
ja 0x140031196
mov dword [rbx + 0x138], recvfrom
mov r9d, dword [rbx + 0x138]
mov ecx, r9d
sub ecx, 0xa
je 0x140030c9d
cmp ecx, 1
jne 0x140031065
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 0x140030cdd
cmp eax, dword [rbx + 0x138]
jle 0x140030cea
movzx eax, byte [rbx + 0x138]
mov byte [rbx + 0x12f1], al
cmp qword [rbx + 0x10f8], rsi
je 0x140030d0f
cmp byte [rbx + 0x12f2], sil
jne 0x140030d0f
cmp dword [rbx + 0x13c], 0x1a0
jne 0x140030d0f
mov byte [rbx + 0x1da], 1
mov eax, dword [rbx + 0x138]
cmp eax, 0xa
jne 0x140030d38
lea rdx, str.HTTP_1.0__assume_close_after_body
mov rcx, rbx
call fcn.14001ff30
mov edx, 1
mov rcx, r13
call fcn.140022b70
jmp 0x140030d5c
cmp eax, 0x14
je 0x140030d4f
cmp dword [rbx + 0x144], 2
jne 0x140030d5c
cmp dword [rbx + 0x13c], 0x65
jne 0x140030d5c
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 0x140030d8e
cmp ecx, 0x64
jne 0x140030da3
cmp byte [rbx + 0x530], sil
je 0x140030d8e
mov byte [rbx + 0x13ec], 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.140001690
mov rcx, rsi
mov r14, rax
call fcn.140012350
mov r8, rax
xor edx, edx
mov rcx, r14
mov rsi, rax
call fcn.14006bcda
test rax, rax
jne 0x1400310c2
mov edx, dword [rbx + 0x12c]
cmp edx, 2
jl 0x140030e12
movzx ecx, byte [r14]
cmp cl, 0x20
je 0x140030df4
cmp cl, 9
jne 0x140030df9
cmp edx, 2
jg 0x140030e12
mov r8, rsi
mov edx, 0x3a
mov rcx, r14
call fcn.14006bcda
test rax, rax
je 0x1400310a7
mov r9, rbp
mov r8, r15
mov rdx, r13
mov rcx, rbx
call fcn.14002e2f0
test eax, eax
jne 0x140031006
mov r9, rbp
lea edx, [rax + 1]
mov r8, r15
mov rcx, rbx
call fcn.14001fd60
mov eax, dword [rbx + 0x13c]
sub eax, 0x64
cmp eax, 0x64
jae 0x140030e4d
or edi, 0x20
mov r9, rbp
mov r8, r15
mov edx, edi
mov rcx, rbx
call fcn.140020f40
test eax, eax
jne 0x140031006
mov edx, dword [rbx + 0x124]
mov r9d, 0x4b000
cmp rbp, r9
jae 0x140030ead
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 0x140030ea8
cmp ecx, 0x5dc000
jbe 0x140030eba
mov r9d, 0x5dc000
mov eax, ecx
mov r8d, eax
jmp 0x140030eb1
lea r8, [rdx + rbp]
test r8, r8
jne 0x1400310dd
lea rcx, [rbx + 0xca0]
call fcn.140012360
test r12, r12
je 0x140030fe7
mov rsi, qword [rsp + 0x68]
lea r14, [rbx + 0xca0]
mov r15, qword [rsp + 0x78]
jmp 0x1400308e7
mov r9, rbp
mov r8, r15
mov edx, 1
mov rcx, rbx
call fcn.14001fd60
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.140020f40
test eax, eax
jne 0x140031006
mov ecx, dword [rbx + 0x124]
mov r9d, 0x4b000
cmp rbp, r9
jae 0x140030f74
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 0x140030f6f
cmp r8d, 0x5dc000
jbe 0x140030f81
mov r9d, 0x5dc000
mov edx, r8d
mov r8d, edx
jmp 0x140030f78
lea r8, [rcx + rbp]
test r8, r8
jne 0x1400310dd
lea rcx, [rbx + 0xca0]
call fcn.140012360
mov eax, dword [rbx + 0x13c]
sub eax, 0x64
cmp eax, 0x63
ja 0x140030fa3
mov eax, dword [rbx + 0x120]
jmp 0x140030fa5
xor eax, eax
lea r9, [rsp + 0x60]
mov dword [rbx + 0x128], eax
mov r8, r12
mov rdx, rsi
mov rcx, rbx
call fcn.14002ffa0
test eax, eax
jne 0x140031006
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 0x140030fe7
test r12, r12
jne 0x1400308e7
xor bpl, bpl
cmp byte [rbx + 0x1d1], 0
jne 0x140031004
test bpl, bpl
jne 0x140031004
lea rcx, [rbx + 0xca0]
call fcn.140012300
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.140022b70
cmp byte [r13 + 0x778], 0xa
jae 0x140031187
cmp byte [rbx + 0xac9], 0
je 0x14003116e
mov byte [rbx + 0x1d1], 0
mov bpl, 1
jmp 0x140030fea
lea rdx, str.Unsupported_HTTP_version_in_response
mov rcx, rbx
call fcn.14001fe40
mov eax, 1
jmp 0x140031006
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.14001fe40
mov eax, 1
jmp 0x140031006
mov byte [rbx + 0x1d1], sil
jmp 0x140030fe7
lea rdx, str.Header_without_colon
mov rcx, rbx
mov edi, 8
call fcn.14001fe40
mov eax, edi
jmp 0x140031006
lea rdx, str.Nul_byte_in_header
mov rcx, rbx
mov edi, 8
call fcn.14001fe40
mov eax, edi
jmp 0x140031006
lea rdx, str.Too_large_response_headers:__zu____u
mov rcx, rbx
call fcn.14001fe40
mov eax, gethostname
jmp 0x140031006
mov r8, r12
call fcn.1400122f0
test eax, eax
jne 0x140031006
add qword [r15], r12
cmp dword [rbx + 0x12c], eax
jne 0x140030fe7
mov rcx, r14
call fcn.140012350
mov rcx, r14
mov rdi, rax
call fcn.140001690
mov r8, rax
mov r9, rdi
mov rdx, r13
mov rcx, rbx
call fcn.14002ff30
cmp eax, 2
jne 0x140030fe7
mov edx, eax
mov byte [rbx + 0x1d1], 0
mov rcx, r13
call fcn.140022b70
cmp byte [r13 + 0x778], 0xa
jae 0x140031187
cmp byte [rbx + 0xac9], 0
je 0x14003116e
mov bpl, 1
jmp 0x140030fea
lea rdx, str.Received_HTTP_0.9_when_not_allowed
mov rcx, rbx
call fcn.14001fe40
mov eax, 1
jmp 0x140031006
lea rdx, str.Invalid_status_line
mov rcx, rbx
call fcn.14001fe40
mov eax, 8
jmp 0x140031006