Function at 0x1800b3c30
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.18010a990
mov rdi, rax
mov rdx, rsi
mov rcx, r14
test rax, rax
je 0x1800b4476
sub rdi, rsi
inc rdi
mov r8, rdi
call fcn.180078380
test eax, eax
jne 0x1800b4386
add qword [r15], rdi
add rsi, rdi
sub r12, rdi
mov qword [rsp + 0x68], rsi
cmp dword [rbx + 0x12c], eax
jne 0x1800b3d24
mov rcx, r14
call fcn.1800783e0
mov rcx, r14
mov rsi, rax
call fcn.180068de0
mov rcx, qword [r13 + 0x360]
mov rdx, rax
test dword [rcx + 0x84], 0x40000
je 0x1800b3d09
xor edi, edi
lea rcx, str.RTSP_
cmp rsi, rbp
cmova rsi, rbp
setae dil
mov r8, rsi
call fcn.180076be0
test eax, eax
mov ecx, 2
cmovne ecx, edi
jmp 0x1800b3d16
mov r8, rsi
mov rcx, rbx
call fcn.1800b31e0
mov ecx, eax
cmp ecx, 2
je 0x1800b439b
mov rsi, qword [rsp + 0x68]
lea rcx, [rbx + 0xca0]
call fcn.180068de0
mov rcx, r14
mov r15, rax
call fcn.1800783e0
movzx ecx, byte [r15]
mov rbp, rax
cmp cl, 0xa
je 0x1800b4265
cmp cl, 0xd
je 0x1800b4265
mov edx, dword [rbx + 0x12c]
mov edi, 4
mov rsi, r14
lea ecx, [rdx + 1]
mov dword [rbx + 0x12c], ecx
test edx, edx
jne 0x1800b412b
xor esi, esi
mov dword [rbx + 0x138], esi
mov rax, qword [r13 + 0x360]
mov ecx, dword [rax + 0x84]
test cl, 3
je 0x1800b3f22
movzx eax, byte [r15]
mov rdi, r15
test al, al
je 0x1800b3db3
nop dword [rax]
cmp al, 0x20
je 0x1800b3da8
cmp al, 9
jne 0x1800b3db3
movzx eax, byte [rdi + 1]
inc rdi
test al, al
jne 0x1800b3da0
mov r8d, 5
lea rdx, str.HTTP_
mov rcx, rdi
call fcn.1800ead00
test eax, eax
jne 0x1800b3e59
movsx edx, byte [rdi + 5]
mov ecx, edx
sub ecx, 0x31
je 0x1800b3e89
sub ecx, 1
je 0x1800b3ded
cmp ecx, 1
jne 0x1800b43cf
movzx eax, byte [rdi + 6]
cmp al, 0x20
je 0x1800b3df9
cmp al, 9
jne 0x1800b3e59
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 0x1800b3e59
movsx edx, byte [rdi + 8]
lea eax, [rdx - 0x30]
cmp al, 9
ja 0x1800b3e59
movsx r8d, byte [rdi + 9]
lea eax, [r8 - 0x30]
cmp al, 9
ja 0x1800b3e59
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 0x1800b4005
sub al, 9
cmp al, 4
jbe 0x1800b4005
mov r8, rbp
mov rdx, r15
mov rcx, rbx
call fcn.1800b31e0
cmp eax, 1
jne 0x1800b441b
mov dword [rbx + 0x13c], 0xc8
mov dword [rbx + 0x138], 0xa
jmp 0x1800b4005
cmp byte [rdi + 6], 0x2e
jne 0x1800b3f09
movsx ecx, byte [rdi + 7]
lea eax, [rcx - 0x30]
cmp al, 1
ja 0x1800b3f09
movzx eax, byte [rdi + 8]
cmp al, 0x20
je 0x1800b3ea6
cmp al, 9
jne 0x1800b3f09
lea eax, [rcx - 0x26]
mov dword [rbx + 0x138], eax
movsx ecx, byte [rdi + 9]
lea eax, [rcx - 0x30]
cmp al, 9
ja 0x1800b3f09
movsx edx, byte [rdi + 0xa]
lea eax, [rdx - 0x30]
cmp al, 9
ja 0x1800b3f09
movsx r8d, byte [rdi + 0xb]
lea eax, [r8 - 0x30]
cmp al, 9
ja 0x1800b3f09
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 0x1800b4005
cmp al, 9
je 0x1800b4005
sub al, 0xa
cmp al, 3
jbe 0x1800b4005
lea rdx, str.Unsupported_HTTP_1_subversion_in_response
mov rcx, rbx
call fcn.1800786d0
mov eax, 1
jmp 0x1800b4386
bt ecx, 0x12
jae 0x1800b441b
movzx eax, byte [r15]
mov rdi, r15
test al, al
je 0x1800b3f4a
cmp al, 0x20
je 0x1800b3f3f
cmp al, 9
jne 0x1800b3f4a
movzx eax, byte [rdi + 1]
inc rdi
test al, al
jne 0x1800b3f37
mov r8d, 5
lea rdx, str.RTSP_
mov rcx, rdi
call fcn.1800ead00
test eax, eax
jne 0x1800b441b
movzx eax, byte [rdi + 5]
sub al, 0x30
cmp al, 9
ja 0x1800b4516
cmp byte [rdi + 6], 0x2e
jne 0x1800b4516
movzx eax, byte [rdi + 7]
sub al, 0x30
cmp al, 9
ja 0x1800b4516
movzx eax, byte [rdi + 8]
cmp al, 0x20
je 0x1800b3f9d
cmp al, 9
jne 0x1800b4516
movsx ecx, byte [rdi + 9]
lea eax, [rcx - 0x30]
cmp al, 9
ja 0x1800b4516
movsx edx, byte [rdi + 0xa]
lea eax, [rdx - 0x30]
cmp al, 9
ja 0x1800b4516
movsx r8d, byte [rdi + 0xb]
lea eax, [r8 - 0x30]
cmp al, 9
ja 0x1800b4516
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 0x1800b3ffb
cmp al, 9
je 0x1800b3ffb
sub al, 0xa
cmp al, 3
ja 0x1800b4516
mov dword [rbx + 0x138], send
mov r9d, dword [rbx + 0x138]
mov ecx, r9d
sub ecx, 0xa
je 0x1800b401d
cmp ecx, 1
jne 0x1800b43e5
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 0x1800b405d
cmp eax, dword [rbx + 0x138]
jle 0x1800b406a
movzx eax, byte [rbx + 0x138]
mov byte [rbx + 0x12f1], al
cmp qword [rbx + 0x10f8], rsi
je 0x1800b408f
cmp byte [rbx + 0x12f2], sil
jne 0x1800b408f
cmp dword [rbx + 0x13c], 0x1a0
jne 0x1800b408f
mov byte [rbx + 0x1da], 1
mov eax, dword [rbx + 0x138]
cmp eax, 0xa
jne 0x1800b40b8
lea rdx, str.HTTP_1.0__assume_close_after_body
mov rcx, rbx
call fcn.1800787c0
mov edx, 1
mov rcx, r13
call fcn.18008ead0
jmp 0x1800b40dc
cmp eax, 0x14
je 0x1800b40cf
cmp dword [rbx + 0x144], 2
jne 0x1800b40dc
cmp dword [rbx + 0x13c], 0x65
jne 0x1800b40dc
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 0x1800b410e
cmp ecx, 0x64
jne 0x1800b4123
cmp byte [rbx + 0x530], sil
je 0x1800b410e
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.180068de0
mov rcx, rsi
mov r14, rax
call fcn.1800783e0
mov r8, rax
xor edx, edx
mov rcx, r14
mov rsi, rax
call fcn.18010a990
test rax, rax
jne 0x1800b4442
mov edx, dword [rbx + 0x12c]
cmp edx, 2
jl 0x1800b4192
movzx ecx, byte [r14]
cmp cl, 0x20
je 0x1800b4174
cmp cl, 9
jne 0x1800b4179
cmp edx, 2
jg 0x1800b4192
mov r8, rsi
mov edx, 0x3a
mov rcx, r14
call fcn.18010a990
test rax, rax
je 0x1800b4427
mov r9, rbp
mov r8, r15
mov rdx, r13
mov rcx, rbx
call fcn.1800b1670
test eax, eax
jne 0x1800b4386
mov r9, rbp
lea edx, [rax + 1]
mov r8, r15
mov rcx, rbx
call fcn.1800785f0
mov eax, dword [rbx + 0x13c]
sub eax, 0x64
cmp eax, 0x64
jae 0x1800b41cd
or edi, 0x20
mov r9, rbp
mov r8, r15
mov edx, edi
mov rcx, rbx
call fcn.180075ca0
test eax, eax
jne 0x1800b4386
mov edx, dword [rbx + 0x124]
mov r9d, 0x4b000
cmp rbp, r9
jae 0x1800b422d
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 0x1800b4228
cmp ecx, 0x5dc000
jbe 0x1800b423a
mov r9d, 0x5dc000
mov eax, ecx
mov r8d, eax
jmp 0x1800b4231
lea r8, [rdx + rbp]
test r8, r8
jne 0x1800b445d
lea rcx, [rbx + 0xca0]
call fcn.1800783f0
test r12, r12
je 0x1800b4367
mov rsi, qword [rsp + 0x68]
lea r14, [rbx + 0xca0]
mov r15, qword [rsp + 0x78]
jmp 0x1800b3c67
mov r9, rbp
mov r8, r15
mov edx, 1
mov rcx, rbx
call fcn.1800785f0
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.180075ca0
test eax, eax
jne 0x1800b4386
mov ecx, dword [rbx + 0x124]
mov r9d, 0x4b000
cmp rbp, r9
jae 0x1800b42f4
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 0x1800b42ef
cmp r8d, 0x5dc000
jbe 0x1800b4301
mov r9d, 0x5dc000
mov edx, r8d
mov r8d, edx
jmp 0x1800b42f8
lea r8, [rcx + rbp]
test r8, r8
jne 0x1800b445d
lea rcx, [rbx + 0xca0]
call fcn.1800783f0
mov eax, dword [rbx + 0x13c]
sub eax, 0x64
cmp eax, 0x63
ja 0x1800b4323
mov eax, dword [rbx + 0x120]
jmp 0x1800b4325
xor eax, eax
lea r9, [rsp + 0x60]
mov dword [rbx + 0x128], eax
mov r8, r12
mov rdx, rsi
mov rcx, rbx
call fcn.1800b3320
test eax, eax
jne 0x1800b4386
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 0x1800b4367
test r12, r12
jne 0x1800b3c67
xor bpl, bpl
cmp byte [rbx + 0x1d1], 0
jne 0x1800b4384
test bpl, bpl
jne 0x1800b4384
lea rcx, [rbx + 0xca0]
call fcn.180078390
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.18008ead0
cmp byte [r13 + 0x778], 0xa
jae 0x1800b4507
cmp byte [rbx + 0xac9], 0
je 0x1800b44ee
mov byte [rbx + 0x1d1], 0
mov bpl, 1
jmp 0x1800b436a
lea rdx, str.Unsupported_HTTP_version_in_response
mov rcx, rbx
call fcn.1800786d0
mov eax, 1
jmp 0x1800b4386
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.1800786d0
mov eax, 1
jmp 0x1800b4386
mov byte [rbx + 0x1d1], sil
jmp 0x1800b4367
lea rdx, str.Header_without_colon
mov rcx, rbx
mov edi, 8
call fcn.1800786d0
mov eax, edi
jmp 0x1800b4386
lea rdx, str.Nul_byte_in_header
mov rcx, rbx
mov edi, 8
call fcn.1800786d0
mov eax, edi
jmp 0x1800b4386
lea rdx, str.Too_large_response_headers:__zu____u
mov rcx, rbx
call fcn.1800786d0
mov eax, gethostname
jmp 0x1800b4386
mov r8, r12
call fcn.180078380
test eax, eax
jne 0x1800b4386
add qword [r15], r12
cmp dword [rbx + 0x12c], eax
jne 0x1800b4367
mov rcx, r14
call fcn.1800783e0
mov rcx, r14
mov rdi, rax
call fcn.180068de0
mov r8, rax
mov r9, rdi
mov rdx, r13
mov rcx, rbx
call fcn.1800b32b0
cmp eax, 2
jne 0x1800b4367
mov edx, eax
mov byte [rbx + 0x1d1], 0
mov rcx, r13
call fcn.18008ead0
cmp byte [r13 + 0x778], 0xa
jae 0x1800b4507
cmp byte [rbx + 0xac9], 0
je 0x1800b44ee
mov bpl, 1
jmp 0x1800b436a
lea rdx, str.Received_HTTP_0.9_when_not_allowed
mov rcx, rbx
call fcn.1800786d0
mov eax, 1
jmp 0x1800b4386
lea rdx, str.Invalid_status_line
mov rcx, rbx
call fcn.1800786d0
mov eax, 8
jmp 0x1800b4386