Function at 0x100487b0
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 0x10048d23
cmp al, 0xd
je 0x10048d23
mov ecx, dword [edi + 0xc4]
mov esi, 4
mov ebp, dword [esp + 0x2c]
lea eax, [ecx + 1]
mov dword [edi + 0xc4], eax
test ecx, ecx
jne 0x10048c45
mov dword [edi + 0xd0], 0
mov eax, dword [edi + 0x18]
mov eax, dword [eax + 0x2ac]
mov eax, dword [eax + 0x48]
test al, 3
je 0x100489c8
mov al, byte [ebx]
mov esi, ebx
test al, al
je 0x10048832
cmp al, 0x20
je 0x1004882a
cmp al, 9
jne 0x10048832
mov al, byte [esi + 1]
inc esi
test al, al
jne 0x10048822
push 5
push str.HTTP_
push esi
call dword [sym.imp.api_ms_win_crt_string_l1_1_0.dll_strncmp]
add esp, 0xc
test eax, eax
jne 0x100488f6
movsx ecx, byte [esi + 5]
mov eax, ecx
sub eax, 0x31
je 0x10048923
sub eax, 1
je 0x1004887f
sub eax, 1
je 0x1004887f
push str.Unsupported_HTTP_version_in_response
push edi
call fcn.10037540
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 0x1004888a
cmp al, 9
jne 0x100488f6
lea eax, [ecx - 0x30]
lea eax, [eax + eax*4]
add eax, eax
mov dword [edi + 0xd0], eax
mov cl, byte [esi + 7]
lea eax, [ecx - 0x30]
cmp al, 9
ja 0x100488f6
mov dl, byte [esi + 8]
lea eax, [edx - 0x30]
cmp al, 9
ja 0x100488f6
mov dh, byte [esi + 9]
mov al, dh
sub al, 0x30
cmp al, 9
ja 0x100488f6
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 + 0xd4], eax
mov al, byte [esi + 0xa]
cmp al, 0x20
je 0x10048aa6
cmp al, 9
je 0x10048aa6
cmp al, 0xa
jl 0x100488f6
cmp al, 0xd
jle 0x10048aa6
push ebp
push ebx
push edi
call fcn.10047bb0
add esp, 0xc
cmp eax, 1
jne 0x10048c71
mov dword [edi + 0xd4], 0xc8
mov dword [edi + 0xd0], 0xa
jmp 0x10048aa6
cmp byte [esi + 6], 0x2e
jne 0x100489ad
mov al, byte [esi + 7]
cmp al, 0x30
je 0x10048938
cmp al, 0x31
jne 0x100489ad
mov cl, byte [esi + 8]
cmp cl, 0x20
je 0x10048945
cmp cl, 9
jne 0x100489ad
movsx eax, al
sub eax, 0x26
mov dword [edi + 0xd0], eax
mov cl, byte [esi + 9]
lea eax, [ecx - 0x30]
cmp al, 9
ja 0x100489ad
mov dl, byte [esi + 0xa]
lea eax, [edx - 0x30]
cmp al, 9
ja 0x100489ad
mov dh, byte [esi + 0xb]
mov al, dh
sub al, 0x30
cmp al, 9
ja 0x100489ad
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 + 0xd4], eax
mov al, byte [esi + 0xc]
cmp al, 0x20
je 0x10048aa6
cmp al, 9
je 0x10048aa6
sub al, 0xa
cmp al, 3
jbe 0x10048aa6
push str.Unsupported_HTTP_1_subversion_in_response
push edi
call fcn.10037540
add esp, 8
mov eax, 1
pop edi
pop esi
pop ebp
pop ebx
add esp, 0x10
ret
test eax, 0x40000
je 0x10048c71
mov al, byte [ebx]
mov esi, ebx
test al, al
je 0x100489f0
nop dword [eax + eax]
cmp al, 0x20
je 0x100489e8
cmp al, 9
jne 0x100489f0
mov al, byte [esi + 1]
inc esi
test al, al
jne 0x100489e0
push 5
push str.RTSP_
push esi
call dword [sym.imp.api_ms_win_crt_string_l1_1_0.dll_strncmp]
add esp, 0xc
test eax, eax
jne 0x10048c71
mov al, byte [esi + 5]
sub al, 0x30
cmp al, 9
ja 0x10048c78
cmp byte [esi + 6], 0x2e
jne 0x10048c78
mov al, byte [esi + 7]
sub al, 0x30
cmp al, 9
ja 0x10048c78
mov al, byte [esi + 8]
cmp al, 0x20
je 0x10048a3c
cmp al, 9
jne 0x10048c78
mov cl, byte [esi + 9]
lea eax, [ecx - 0x30]
cmp al, 9
ja 0x10048c78
mov dl, byte [esi + 0xa]
lea eax, [edx - 0x30]
cmp al, 9
ja 0x10048c78
mov dh, byte [esi + 0xb]
mov al, dh
sub al, 0x30
cmp al, 9
ja 0x10048c78
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 + 0xd4], eax
mov al, byte [esi + 0xc]
cmp al, 0x20
je 0x10048a9c
cmp al, 9
je 0x10048a9c
sub al, 0xa
cmp al, 3
ja 0x10048c78
mov dword [edi + 0xd0], 0xb
mov ecx, dword [edi + 0xd0]
mov eax, ecx
mov esi, dword [edi + 0x18]
sub eax, 0xa
je 0x10048ad0
sub eax, 1
je 0x10048ad0
mov eax, ecx
mov ecx, 0xa
cdq
idiv ecx
mov ecx, edx
mov edx, eax
mov eax, str.Unsupported_HTTP_version___u._d__in_response
jmp 0x10048b0d
mov al, byte [esi + 0x514]
test al, al
je 0x10048b26
movzx ecx, al
mov eax, 0xcccccccd
mul ecx
mov eax, 0x66666667
shr edx, 3
mov dword [esp + 0x24], edx
imul dword [edi + 0xd0]
sar edx, 2
mov ecx, edx
shr ecx, 0x1f
add ecx, edx
mov edx, dword [esp + 0x24]
cmp ecx, edx
je 0x10048b26
mov eax, str.Version_mismatch__from_HTTP__u_to_HTTP__u_
push ecx
push edx
push eax
push edi
call fcn.10037540
add esp, 0x10
mov eax, 1
pop edi
pop esi
pop ebp
pop ebx
add esp, 0x10
ret
mov eax, dword [edi + 0xd4]
mov dword [edi + 0xd10], eax
mov eax, dword [edi + 0xd0]
mov dword [edi + 0xd18], eax
movzx eax, byte [edi + 0xd0]
mov byte [esi + 0x514], al
mov al, byte [edi + 0xced]
test al, al
je 0x10048b64
mov ecx, dword [edi + 0xd0]
movzx eax, al
cmp eax, ecx
jle 0x10048b76
jmp 0x10048b6a
mov cl, byte [edi + 0xd0]
mov byte [edi + 0xced], cl
mov ecx, dword [edi + 0xd0]
mov eax, dword [edi + 0xbd0]
or eax, dword [edi + 0xbd4]
je 0x10048ba0
cmp byte [edi + 0xcee], 0
jne 0x10048ba0
cmp dword [edi + 0xd4], 0x1a0
jne 0x10048ba0
mov byte [edi + 0x132], 1
cmp ecx, 0xa
jne 0x10048bbd
push str.HTTP_1.0__assume_close_after_body
push edi
call fcn.10037610
push 1
push esi
call fcn.10039b00
add esp, 0x10
jmp 0x10048be0
cmp ecx, 0x14
je 0x10048bd4
cmp dword [edi + 0xdc], 2
jne 0x10048be0
cmp dword [edi + 0xd4], 0x65
jne 0x10048be0
mov eax, dword [esi + 0x4e8]
mov dword [eax], 2
mov ecx, dword [edi + 0xd4]
lea eax, [ecx - 0x64]
cmp eax, 0x63
setbe al
mov byte [edi + 0x133], al
sub ecx, 0xcc
je 0x10048c11
sub ecx, 0x64
jne 0x10048c40
cmp byte [edi + 0x3b0], cl
je 0x10048c11
mov byte [edi + 0xdd0], 1
mov dword [edi + 0x88], 0
mov dword [edi + 0x8c], 0
mov dword [edi + 0x90], 0
mov dword [edi + 0x94], 0
mov byte [edi + 0x133], 1
mov esi, 0xc
push ebp
push 0
push ebx
call sub.VCRUNTIME140.dll_memchr
add esp, 0xc
test eax, eax
je 0x10048c85
mov eax, str.Nul_byte_in_header
push eax
push edi
call fcn.10037540
add esp, 8
mov eax, 8
pop edi
pop esi
pop ebp
pop ebx
add esp, 0x10
ret
mov byte [edi + 0x129], 0
pop edi
pop esi
pop ebp
mov eax, 8
pop ebx
add esp, 0x10
ret
mov ecx, dword [edi + 0xc4]
cmp ecx, 2
jl 0x10048ccb
mov al, byte [ebx]
cmp al, 0x20
je 0x10048c9a
cmp al, 9
jne 0x10048c9f
cmp ecx, 2
jg 0x10048ccb
push ebp
push 0x3a
push ebx
call sub.VCRUNTIME140.dll_memchr
add esp, 0xc
test eax, eax
jne 0x10048ccb
mov eax, str.Header_without_colon
push eax
push edi
call fcn.10037540
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.10046320
add esp, 0xc
test eax, eax
jne 0x10048d9e
push ebp
push ebx
push 1
push edi
call fcn.10037490
mov eax, dword [edi + 0xd4]
add esp, 0x10
sub eax, 0x64
cmp eax, 0x64
jae 0x10048cfc
or esi, 0x20
push ebp
push ebx
push esi
push edi
call fcn.100387c0
add esp, 0x10
test eax, eax
jne 0x10048d9e
push eax
push ebp
push edi
call fcn.10045960
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.10029b20
push esi
lea eax, [esp + 0x1c]
push ebx
push eax
call fcn.10029ae0
add esp, 0x14
test eax, eax
jne 0x10048d9e
lea eax, [edi + 0x878]
push eax
call fcn.10029b40
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.100720b0
add esp, 4
push eax
lea eax, [esp + 0x20]
push eax
call fcn.10029be0
add esp, 4
push eax
push edi
call fcn.10047d00
mov ecx, dword [esp + 0x3c]
mov esi, eax
add dword [ebp], ecx
lea eax, [esp + 0x28]
push eax
call fcn.10029af0
add esp, 0x1c
mov eax, esi
pop edi
pop esi
pop ebp
pop ebx
add esp, 0x10
ret