Function at 0x471170
Capabilities:
Validate payment card number using luhn algorithm

Disassembly:
sub esp, 0x10
push ebx
mov ebx, dword [esp + 0x1c]
push ebp
mov ebp, dword [esp + 0x30]
push esi
push edi
mov edi, dword [esp + 0x24]
mov dword [ebp], 0
mov al, byte [ebx]
cmp al, 0xa
je 0x4716c5
cmp al, 0xd
je 0x4716c5
mov ecx, dword [edi + 0xd4]
mov esi, 4
mov ebp, dword [esp + 0x2c]
lea eax, [ecx + 1]
mov dword [edi + 0xd4], eax
test ecx, ecx
jne 0x4715e7
mov dword [edi + 0xe0], 0
mov eax, dword [edi + 0x18]
mov eax, dword [eax + 0x2b4]
mov eax, dword [eax + 0x48]
test eax, 0xc0000003
je 0x47138a
mov al, byte [ebx]
mov esi, ebx
test al, al
je 0x4711f5
cmp al, 0x20
je 0x4711ed
cmp al, 9
jne 0x4711f5
mov al, byte [esi + 1]
inc esi
test al, al
jne 0x4711e5
push 5
push str.HTTP_
push esi
call fcn.004fb900
add esp, 0xc
test eax, eax
jne 0x4712b8
movsx ecx, byte [esi + 5]
mov eax, ecx
sub eax, 0x31
je 0x4712e5
sub eax, 1
je 0x471241
sub eax, 1
je 0x471241
push str.Unsupported_HTTP_version_in_response
push edi
call fcn.0045d0c0
add esp, 8
mov eax, 1
pop edi
pop esi
pop ebp
pop ebx
add esp, 0x10
ret
mov al, byte [esi + 6]
cmp al, 0x20
je 0x47124c
cmp al, 9
jne 0x4712b8
lea eax, [ecx - 0x30]
lea eax, [eax + eax*4]
add eax, eax
mov dword [edi + 0xe0], eax
mov cl, byte [esi + 7]
lea eax, [ecx - 0x30]
cmp al, 9
ja 0x4712b8
mov dl, byte [esi + 8]
lea eax, [edx - 0x30]
cmp al, 9
ja 0x4712b8
mov dh, byte [esi + 9]
mov al, dh
sub al, 0x30
cmp al, 9
ja 0x4712b8
movsx eax, cl
lea ecx, [eax + eax*4]
movsx eax, dl
lea eax, [eax + ecx*2]
lea ecx, [eax + eax*4]
movsx eax, dh
lea eax, [eax + ecx*2]
add eax, 0xffffeb30
mov dword [edi + 0xe4], eax
mov al, byte [esi + 0xa]
cmp al, 0x20
je 0x471465
cmp al, 9
je 0x471465
cmp al, 0xa
jl 0x4712b8
cmp al, 0xd
jle 0x471465
push ebp
push ebx
push edi
call fcn.004704a0
add esp, 0xc
cmp eax, 1
jne 0x471613
mov dword [edi + 0xe4], 0xc8
mov dword [edi + 0xe0], 0xa
jmp 0x471465
cmp byte [esi + 6], 0x2e
jne 0x47136f
mov al, byte [esi + 7]
cmp al, 0x30
je 0x4712fa
cmp al, 0x31
jne 0x47136f
mov cl, byte [esi + 8]
cmp cl, 0x20
je 0x471307
cmp cl, 9
jne 0x47136f
movsx eax, al
sub eax, 0x26
mov dword [edi + 0xe0], eax
mov cl, byte [esi + 9]
lea eax, [ecx - 0x30]
cmp al, 9
ja 0x47136f
mov dl, byte [esi + 0xa]
lea eax, [edx - 0x30]
cmp al, 9
ja 0x47136f
mov dh, byte [esi + 0xb]
mov al, dh
sub al, 0x30
cmp al, 9
ja 0x47136f
movsx eax, cl
lea ecx, [eax + eax*4]
movsx eax, dl
lea eax, [eax + ecx*2]
lea ecx, [eax + eax*4]
movsx eax, dh
lea eax, [eax + ecx*2]
add eax, 0xffffeb30
mov dword [edi + 0xe4], eax
mov al, byte [esi + 0xc]
cmp al, 0x20
je 0x471465
cmp al, 9
je 0x471465
sub al, 0xa
cmp al, 3
jbe 0x471465
push str.Unsupported_HTTP_1_subversion_in_response
push edi
call fcn.0045d0c0
add esp, 8
mov eax, 1
pop edi
pop esi
pop ebp
pop ebx
add esp, 0x10
ret
test eax, 0x40000
je 0x471613
mov al, byte [ebx]
mov esi, ebx
test al, al
je 0x4713b0
nop dword [eax]
cmp al, 0x20
je 0x4713a8
cmp al, 9
jne 0x4713b0
mov al, byte [esi + 1]
inc esi
test al, al
jne 0x4713a0
push 5
push str.RTSP_
push esi
call fcn.004fb900
add esp, 0xc
test eax, eax
jne 0x471613
mov al, byte [esi + 5]
sub al, 0x30
cmp al, 9
ja 0x47161a
cmp byte [esi + 6], 0x2e
jne 0x47161a
mov al, byte [esi + 7]
sub al, 0x30
cmp al, 9
ja 0x47161a
mov al, byte [esi + 8]
cmp al, 0x20
je 0x4713fb
cmp al, 9
jne 0x47161a
mov cl, byte [esi + 9]
lea eax, [ecx - 0x30]
cmp al, 9
ja 0x47161a
mov dl, byte [esi + 0xa]
lea eax, [edx - 0x30]
cmp al, 9
ja 0x47161a
mov dh, byte [esi + 0xb]
mov al, dh
sub al, 0x30
cmp al, 9
ja 0x47161a
movsx eax, cl
lea ecx, [eax + eax*4]
movsx eax, dl
lea eax, [eax + ecx*2]
lea ecx, [eax + eax*4]
movsx eax, dh
lea eax, [eax + ecx*2]
add eax, 0xffffeb30
mov dword [edi + 0xe4], eax
mov al, byte [esi + 0xc]
cmp al, 0x20
je 0x47145b
cmp al, 9
je 0x47145b
sub al, 0xa
cmp al, 3
ja 0x47161a
mov dword [edi + 0xe0], 0xb
mov ecx, dword [edi + 0xe0]
mov eax, ecx
mov esi, dword [edi + 0x18]
mov dword [esp + 0x38], esi
sub eax, 0xa
je 0x471491
sub eax, 1
je 0x471491
mov eax, ecx
mov ecx, 0xa
cdq
idiv ecx
mov ecx, str.Unsupported_HTTP_version___u._d__in_response
mov esi, edx
jmp 0x4714d0
mov al, byte [esi + 0x518]
test al, al
je 0x4714ed
movzx ecx, al
mov eax, 0xcccccccd
mul ecx
mov eax, 0x66666667
mov ecx, edx
imul dword [edi + 0xe0]
shr ecx, 3
sar edx, 2
mov esi, edx
mov dword [esp + 0x24], ecx
shr esi, 0x1f
add esi, edx
cmp esi, ecx
je 0x4714e9
mov eax, dword [esp + 0x24]
mov ecx, str.Version_mismatch__from_HTTP__u_to_HTTP__u_
push esi
push eax
push ecx
push edi
call fcn.0045d0c0
add esp, 0x10
mov eax, 1
pop edi
pop esi
pop ebp
pop ebx
add esp, 0x10
ret
mov esi, dword [esp + 0x38]
mov eax, dword [edi + 0xe4]
mov dword [edi + 0xd50], eax
mov eax, dword [edi + 0xe0]
mov dword [edi + 0xd58], eax
movzx eax, byte [edi + 0xe0]
mov byte [esi + 0x518], al
mov al, byte [edi + 0xd2d]
test al, al
je 0x47152b
mov ecx, dword [edi + 0xe0]
movzx eax, al
cmp eax, ecx
jle 0x47153d
jmp 0x471531
mov cl, byte [edi + 0xe0]
mov byte [edi + 0xd2d], cl
mov ecx, dword [edi + 0xe0]
mov eax, dword [edi + 0xbf8]
or eax, dword [edi + 0xbfc]
je 0x471567
cmp byte [edi + 0xd2e], 0
jne 0x471567
cmp dword [edi + 0xe4], 0x1a0
jne 0x471567
mov byte [edi + 0x143], 1
cmp ecx, 0xa
jne 0x471582
push str.HTTP_1.0__assume_close_after_body
push edi
call fcn.0045d190
push 1
push esi
call fcn.0045f910
add esp, 0x10
mov ecx, dword [edi + 0xe4]
lea eax, [ecx - 0x64]
cmp eax, 0x63
setbe al
mov byte [edi + 0x144], al
sub ecx, 0xcc
je 0x4715b3
sub ecx, 0x64
jne 0x4715e2
cmp byte [edi + 0x3c0], cl
je 0x4715b3
mov byte [edi + 0xe10], 1
mov dword [edi + 0x98], 0
mov dword [edi + 0x9c], 0
mov dword [edi + 0xa0], 0
mov dword [edi + 0xa4], 0
mov byte [edi + 0x144], 1
mov esi, 0xc
push ebp
push 0
push ebx
call fcn.004f09d0
add esp, 0xc
test eax, eax
je 0x471627
mov eax, str.Nul_byte_in_header
push eax
push edi
call fcn.0045d0c0
add esp, 8
mov eax, 8
pop edi
pop esi
pop ebp
pop ebx
add esp, 0x10
ret
mov byte [edi + 0x139], 0
pop edi
pop esi
pop ebp
mov eax, 8
pop ebx
add esp, 0x10
ret
mov ecx, dword [edi + 0xd4]
cmp ecx, 2
jl 0x47166d
mov al, byte [ebx]
cmp al, 0x20
je 0x47163c
cmp al, 9
jne 0x471641
cmp ecx, 2
jg 0x47166d
push ebp
push 0x3a
push ebx
call fcn.004f09d0
add esp, 0xc
test eax, eax
jne 0x47166d
mov eax, str.Header_without_colon
push eax
push edi
call fcn.0045d0c0
add esp, 8
mov eax, 8
pop edi
pop esi
pop ebp
pop ebx
add esp, 0x10
ret
push ebp
push ebx
push edi
call fcn.0046ec10
add esp, 0xc
test eax, eax
jne 0x471740
push ebp
push ebx
push 1
push edi
call fcn.0045d020
mov eax, dword [edi + 0xe4]
add esp, 0x10
sub eax, 0x64
cmp eax, 0x64
jae 0x47169e
or esi, 0x20
push ebp
push ebx
push esi
push edi
call fcn.0045e3e0
add esp, 0x10
test eax, eax
jne 0x471740
push eax
push ebp
push edi
call fcn.0046e210
add esp, 0xc
pop edi
pop esi
pop ebp
pop ebx
add esp, 0x10
ret
mov esi, dword [esp + 0x2c]
lea eax, [esi + 1]
push eax
lea eax, [esp + 0x14]
push eax
call fcn.0044f830
push esi
lea eax, [esp + 0x1c]
push ebx
push eax
call fcn.0044f7f0
add esp, 0x14
test eax, eax
jne 0x471740
lea eax, [edi + 0x8a0]
push eax
call fcn.0044f850
add esp, 4
lea eax, [esp + 0x24]
push eax
push dword [esp + 0x38]
lea eax, [esp + 0x18]
push dword [esp + 0x38]
push eax
call fcn.0044d820
add esp, 4
push eax
lea eax, [esp + 0x20]
push eax
call fcn.0044d770
add esp, 4
push eax
push edi
call fcn.004705f0
mov ecx, dword [esp + 0x3c]
mov esi, eax
add dword [ebp], ecx
lea eax, [esp + 0x28]
push eax
call fcn.0044f800
add esp, 0x1c
mov eax, esi
pop edi
pop esi
pop ebp
pop ebx
add esp, 0x10
ret