Function at 0x10004410
Capabilities:
Validate payment card number using luhn algorithm

Disassembly:
push ebx
mov ebx, esp
sub esp, 8
and esp, 0xfffffff8
add esp, 4
push ebp
mov ebp, dword [ebx + 4]
mov dword [esp + 4], ebp
mov ebp, esp
push 0xffffffffffffffff
push 0x1001cebd
mov eax, dword fs:[0]
push eax
push ebx
sub esp, 0x50
mov eax, dword [0x10028040]
xor eax, ebp
mov dword [ebp - 0x14], eax
push esi
push edi
push eax
lea eax, [ebp - 0xc]
mov dword fs:[0], eax
mov dword [ebp - 0x4c], ecx
mov eax, dword [ebx + 8]
mov edx, dword [ebx + 0xc]
mov dword [ebp - 0x60], eax
mov dword [ebp - 0x5c], edx
movq xmm0, qword [eax]
mov edi, dword [eax + 8]
movq qword [ebp - 0x24], xmm0
mov dword [ebp - 0x50], edi
mov dword [ebp - 0x1c], edi
mov dword [ebp - 0x18], eax
mov dword [ebp - 4], 0
xorps xmm1, xmm1
mov esi, dword [ebp - 0x24]
mov eax, esi
sub eax, edi
mov dword [ebp - 0x58], eax
cmp byte [esi], 0x2d
jne 0x10004493
inc esi
mov dl, 1
mov dword [ebp - 0x24], esi
jmp 0x10004495
xor dl, dl
mov al, byte [esi]
xorps xmm0, xmm0
mov byte [ebp - 0x27], dl
movlpd qword [ebp - 0x48], xmm0
mov byte [ebp - 0x25], 0
mov dword [ebp - 0x38], 0
cmp al, 0x30
jne 0x100044c3
lea edi, [esi + 1]
mov dword [ebp - 0x40], 0
mov dword [ebp - 0x24], edi
jmp 0x10004576
cmp al, 0x31
jl 0x10004ba7
cmp al, 0x39
jg 0x10004ba7
movsx ecx, al
lea edi, [esi + 1]
mov al, byte [edi]
sub ecx, 0x30
mov dword [ebp - 0x24], edi
mov dword [ebp - 0x40], ecx
test dl, dl
je 0x10004537
cmp al, 0x30
jl 0x10004576
mov edx, edi
mov esi, edi
cmp al, 0x39
ja 0x10004576
cmp ecx, 0xccccccc
jb 0x10004508
jne 0x1000452c
mov edx, esi
cmp al, 0x38
ja 0x1000452c
movsx eax, byte [edx]
lea ecx, [ecx + ecx*4]
inc dword [ebp - 0x38]
lea edi, [edx + 1]
lea ecx, [ecx - 0x18]
mov dword [ebp - 0x24], edi
mov edx, edi
mov esi, edi
lea ecx, [eax + ecx*2]
mov al, byte [edi]
mov dword [ebp - 0x40], ecx
cmp al, 0x30
jge 0x100044f4
jmp 0x10004576
mov dl, 1
mov eax, ecx
xor ecx, ecx
mov byte [ebp - 0x25], dl
jmp 0x1000457f
cmp al, 0x30
jl 0x10004576
mov edx, edi
mov esi, edi
nop
cmp al, 0x39
jg 0x10004576
cmp ecx, 0x19999999
jb 0x10004554
jne 0x1000452c
mov edx, esi
cmp al, 0x35
jg 0x1000452c
movsx eax, byte [edx]
lea ecx, [ecx + ecx*4]
inc dword [ebp - 0x38]
lea edi, [edx + 1]
lea ecx, [ecx - 0x18]
mov dword [ebp - 0x24], edi
mov edx, edi
mov esi, edi
lea ecx, [eax + ecx*2]
mov al, byte [edi]
mov dword [ebp - 0x40], ecx
cmp al, 0x30
jge 0x10004540
mov eax, dword [ebp - 0x48]
mov ecx, dword [ebp - 0x44]
mov dl, byte [ebp - 0x25]
xor dh, dh
mov dword [ebp - 0x30], eax
mov dword [ebp - 0x2c], ecx
mov byte [ebp - 0x26], dh
test dl, dl
je 0x100046ba
mov dl, byte [edi]
cmp byte [ebp - 0x27], dh
je 0x1000463b
cmp dl, 0x30
jl 0x100046b7
mov esi, edi
mov dword [ebp - 0x34], esi
nop dword [eax + eax]
cmp dl, 0x39
ja 0x100046b4
cmp ecx, 0xccccccc
jb 0x100045e1
ja 0x100045ca
cmp eax, 0xcccccccc
jb 0x100045e1
cmp eax, 0xcccccccc
jne 0x10004628
cmp ecx, 0xccccccc
jne 0x10004628
mov esi, dword [ebp - 0x34]
cmp dl, 0x38
ja 0x10004628
shld ecx, eax, 2
lea edi, [esi + 1]
xor edx, edx
movsx esi, byte [esi]
shl eax, 2
sub esi, 0x30
add dword [ebp - 0x30], eax
mov eax, dword [ebp - 0x30]
adc dword [ebp - 0x2c], ecx
mov ecx, dword [ebp - 0x2c]
shld ecx, eax, 1
mov dword [ebp - 0x24], edi
add eax, eax
mov dword [ebp - 0x34], edi
add eax, esi
mov esi, edi
mov dword [ebp - 0x30], eax
adc edx, ecx
inc dword [ebp - 0x38]
mov ecx, edx
mov dl, byte [edi]
mov dword [ebp - 0x2c], ecx
cmp dl, 0x30
jge 0x100045b0
jmp 0x100046b4
mov edx, ecx
mov ecx, eax
call fcn.1001cc90
mov dh, 1
movaps xmm1, xmm0
mov byte [ebp - 0x26], dh
jmp 0x100046b7
cmp dl, 0x30
jl 0x100046b7
mov esi, edi
mov dword [ebp - 0x34], esi
cmp dl, 0x39
ja 0x100046b4
cmp ecx, 0x19999999
jb 0x10004672
ja 0x1000465b
cmp eax, 0x99999999
jb 0x10004672
cmp eax, 0x99999999
jne 0x10004628
cmp ecx, 0x19999999
jne 0x10004628
mov esi, dword [ebp - 0x34]
cmp dl, 0x35
ja 0x10004628
shld ecx, eax, 2
lea edi, [esi + 1]
xor edx, edx
movsx esi, byte [esi]
shl eax, 2
sub esi, 0x30
add dword [ebp - 0x30], eax
mov eax, dword [ebp - 0x30]
adc dword [ebp - 0x2c], ecx
mov ecx, dword [ebp - 0x2c]
shld ecx, eax, 1
mov dword [ebp - 0x24], edi
add eax, eax
mov dword [ebp - 0x34], edi
add eax, esi
mov esi, edi
mov dword [ebp - 0x30], eax
adc edx, ecx
inc dword [ebp - 0x38]
mov ecx, edx
mov dl, byte [edi]
mov dword [ebp - 0x2c], ecx
cmp dl, 0x30
jge 0x10004645
mov dh, byte [ebp - 0x26]
mov dl, byte [ebp - 0x25]
movsd xmm2, qword [0x100257c8]
test dh, dh
je 0x100046f8
mov al, byte [edi]
cmp al, 0x30
jl 0x100046f8
mov ecx, edi
nop
cmp al, 0x39
ja 0x100046f5
movsx eax, byte [ecx]
lea edi, [ecx + 1]
sub eax, 0x30
mulsd xmm1, xmm2
mov ecx, edi
movd xmm0, eax
mov al, byte [edi]
cvtdq2pd xmm0, xmm0
addsd xmm1, xmm0
cmp al, 0x30
jge 0x100046d0
mov dword [ebp - 0x24], edi
mov al, byte [edi]
mov dword [ebp - 0x34], 0
cmp al, 0x2e
jne 0x10004709
inc edi
mov dword [ebp - 0x24], edi
mov esi, edi
cmp al, 0x2e
jne 0x100047b5
mov al, byte [esi]
cmp al, 0x30
jl 0x100047da
cmp al, 0x39
jg 0x100047da
test dh, dh
jne 0x10004750
test dl, dl
je 0x10004735
mov ecx, dword [ebp - 0x30]
mov edx, dword [ebp - 0x2c]
jmp 0x1000473a
mov ecx, dword [ebp - 0x40]
xor edx, edx
call fcn.1001cc90
movsd xmm2, qword [0x100257c8]
movaps xmm1, xmm0
mov byte [ebp - 0x26], 1
jmp 0x10004753
mov byte [ebp - 0x26], dh
mov cl, byte [edi]
mov eax, esi
mov edx, dword [ebp - 0x38]
xorps xmm3, xmm3
mov dword [ebp - 0x54], esi
mov edi, esi
mov dword [ebp - 0x44], esi
mov esi, edi
cmp cl, 0x39
jg 0x100047b2
cmp edx, 0x11
jge 0x1000479b
dec dword [ebp - 0x34]
lea esi, [eax + 1]
movsx eax, byte [eax]
mov ecx, esi
sub eax, 0x30
mulsd xmm1, xmm2
mov dword [ebp - 0x24], ecx
movd xmm0, eax
cvtdq2pd xmm0, xmm0
addsd xmm1, xmm0
comisd xmm1, xmm3
jbe 0x100047a4
inc edx
jmp 0x100047a4
mov esi, dword [ebp - 0x54]
inc esi
mov ecx, esi
mov dword [ebp - 0x24], ecx
mov cl, byte [ecx]
mov eax, esi
mov dword [ebp - 0x54], eax
mov edi, eax
cmp cl, 0x30
jge 0x10004765
mov dh, byte [ebp - 0x26]
xor edi, edi
cmp byte [esi], 0x65
je 0x100047c5
cmp byte [esi], 0x45
jne 0x100048a1
inc esi
mov dword [ebp - 0x24], esi
test dh, dh
jne 0x100047fe
cmp byte [ebp - 0x25], dh
je 0x100047ed
mov ecx, dword [ebp - 0x30]
mov edx, dword [ebp - 0x2c]
jmp 0x100047f2
mov eax, dword [ebp - 0x4c]
mov ecx, 0xe
add eax, 0x18
sub esi, dword [ebp - 0x50]
jmp 0x10004bb1
mov ecx, dword [ebp - 0x40]
xor edx, edx
call fcn.1001cc90
movaps xmm1, xmm0
mov byte [ebp - 0x26], 1
mov cl, byte [esi]
xor dl, dl
cmp cl, 0x2b
je 0x1000480e
cmp cl, 0x2d
jne 0x10004815
mov dl, 1
mov cl, byte [esi + 1]
inc esi
mov dword [ebp - 0x24], esi
lea eax, [ecx - 0x30]
cmp al, 9
ja 0x1000492b
inc esi
movsx edi, cl
sub edi, 0x30
mov dword [ebp - 0x24], esi
mov cl, byte [esi]
mov byte [ebp - 0x39], cl
test dl, dl
je 0x100048d8
mov ecx, dword [ebp - 0x34]
mov eax, 0x66666667
add ecx, 0x7ffffff7
imul ecx
sar edx, 2
mov eax, edx
shr eax, 0x1f
add eax, edx
cmp byte [ebp - 0x39], 0x30
mov dword [ebp - 0x44], eax
jl 0x1000489f
mov al, byte [esi]
nop dword [eax]
cmp al, 0x39
jg 0x1000489f
movsx eax, byte [esi]
lea ecx, [edi + edi*4]
lea edi, [ecx - 0x18]
lea edx, [esi + 1]
mov dword [ebp - 0x24], edx
mov esi, edx
lea edi, [eax + edi*2]
cmp edi, dword [ebp - 0x44]
jle 0x10004899
mov al, byte [edx]
cmp al, 0x30
jl 0x10004899
mov ecx, edx
cmp al, 0x39
ja 0x10004896
lea esi, [ecx + 1]
mov edx, esi
mov ecx, esi
mov al, byte [edx]
cmp al, 0x30
jge 0x10004885
mov dword [ebp - 0x24], edx
mov al, byte [edx]
cmp al, 0x30
jge 0x10004860
neg edi
mov edx, dword [ebp - 0x34]
cmp byte [ebp - 0x26], 0
je 0x100049e4
lea eax, [edi + edx]
cmp eax, 0xfffffecc
jge 0x10004953
divsd xmm1, qword [0x100257d8]
add eax, 0x134
cmp eax, 0xfffffecc
jge 0x10004940
xorps xmm0, xmm0
jmp 0x10004976
mov edx, dword [ebp - 0x34]
mov eax, 0x134
sub eax, edx
mov dword [ebp - 0x44], eax
cmp cl, 0x30
jl 0x100048a4
mov al, byte [esi]
nop dword [eax]
cmp al, 0x39
jg 0x100048a1
movsx eax, byte [esi]
lea ecx, [edi + edi*4]
lea edi, [ecx - 0x18]
lea edx, [esi + 1]
mov dword [ebp - 0x24], edx
lea edi, [eax + edi*2]
cmp edi, dword [ebp - 0x44]
jg 0x10004915
mov al, byte [edx]
mov esi, edx
cmp al, 0x30
jge 0x100048f0
jmp 0x100048a1
mov eax, dword [ebp - 0x4c]
mov ecx, 0xd
mov esi, dword [ebp - 0x58]
add eax, 0x18
lea edx, [eax + 4]
jmp 0x10004bba
mov eax, dword [ebp - 0x4c]
sub esi, dword [ebp - 0x50]
mov dword [eax + 0x18], 0xf
mov dword [eax + 0x1c], esi
jmp 0x10004bbe
shl eax, 3
mov ecx, 0x10024ac8
sub ecx, eax
movaps xmm0, xmm1
divsd xmm0, qword [ecx]
jmp 0x10004976
lea ecx, [eax*8]
movaps xmm0, xmm1
test eax, eax
js 0x1000496b
mulsd xmm0, qword [ecx + 0x10024ac8]
jmp 0x10004976
mov eax, 0x10024ac8
sub eax, ecx
divsd xmm0, qword [eax]
comisd xmm0, xmmword [0x100257e0]
jbe 0x10004995
mov eax, dword [ebp - 0x4c]
mov esi, dword [ebp - 0x58]
mov dword [eax + 0x18], 0xd
mov dword [eax + 0x1c], esi
jmp 0x10004bbe
cmp byte [ebp - 0x27], 0
je 0x100049a2
xorps xmm0, xmmword [0x10025800]
mov edi, dword [ebp - 0x5c]
movsd qword [ebp - 0x48], xmm0
mov eax, dword [edi + 0x28]
sub eax, dword [edi + 0x24]
cmp eax, 0x10
jge 0x100049be
push ecx
lea ecx, [edi + 0x18]
call fcn.10004dd0
mov ecx, dword [edi + 0x24]
xorps xmm0, xmm0
movsd xmm3, qword [ebp - 0x48]
lea eax, [ecx + 0x10]
mov dword [edi + 0x24], eax
mov eax, 0x216
movups xmmword [ecx], xmm0
mov word [ecx + 0xe], ax
movsd qword [ecx], xmm3
jmp 0x10004bbe
mov edi, dword [ebp - 0x5c]
add edi, 0x18
cmp byte [ebp - 0x25], 0
mov eax, dword [edi + 0x10]
je 0x10004b25
cmp byte [ebp - 0x27], 0
je 0x10004aa6
mov esi, dword [ebp - 0x30]
mov ecx, dword [ebp - 0x2c]
neg esi
adc ecx, 0
sub eax, dword [edi + 0xc]
neg ecx
mov dword [ebp - 0x2c], ecx
cmp eax, 0x10
jge 0x10004a24
push ecx
mov ecx, edi
call fcn.10004dd0
mov ecx, dword [ebp - 0x2c]
mov edx, dword [edi + 0xc]
xorps xmm0, xmm0
lea eax, [edx + 0x10]
mov dword [edi + 0xc], eax
mov eax, 0x96
movups xmmword [edx], xmm0
mov dword [edx], esi
mov dword [edx + 4], ecx
mov word [edx + 0xe], ax
test ecx, ecx
jl 0x10004a81
jg 0x10004a4b
test esi, esi
jb 0x10004a81
mov eax, 0x196
mov word [edx + 0xe], ax
mov edi, eax
xor eax, eax
or eax, ecx
jne 0x10004a67
mov eax, 0x1d6
mov word [edx + 0xe], ax
mov edi, eax
and esi, 0x80000000
or esi, ecx
jne 0x10004bbe
or edi, 0x20
mov word [edx + 0xe], di
jmp 0x10004bbe
cmp ecx, 0xffffffff
jl 0x10004bbe
jg 0x10004a98
cmp esi, 0x80000000
jb 0x10004bbe
mov eax, 0xb6
mov word [edx + 0xe], ax
jmp 0x10004bbe
sub eax, dword [edi + 0xc]
cmp eax, 0x10
jge 0x10004ab6
push ecx
mov ecx, edi
call fcn.10004dd0
mov esi, dword [edi + 0xc]
xorps xmm0, xmm0
mov edx, dword [ebp - 0x2c]
mov ecx, dword [ebp - 0x30]
lea eax, [esi + 0x10]
mov dword [edi + 0xc], eax
mov eax, 0x116
mov edi, eax
movups xmmword [esi], xmm0
mov dword [esi], ecx
mov dword [esi + 4], edx
mov word [esi + 0xe], ax
test edx, edx
jl 0x10004af0
jg 0x10004ae5
test ecx, ecx
jb 0x10004af0
mov eax, 0x196
mov word [esi + 0xe], ax
mov edi, eax
movzx eax, di
mov dword [ebp - 0x44], eax
xor eax, eax
or eax, edx
jne 0x10004b08
or edi, 0x40
mov word [esi + 0xe], di
movzx eax, di
jmp 0x10004b0b
mov eax, dword [ebp - 0x44]
and ecx, 0x80000000
or ecx, edx
jne 0x10004bbe
or eax, 0x20
mov word [esi + 0xe], ax
jmp 0x10004bbe
sub eax, dword [edi + 0xc]
cmp byte [ebp - 0x27], 0
je 0x10004b6c
mov esi, dword [ebp - 0x40]
neg esi
cmp eax, 0x10
jge 0x10004b40
push ecx
mov ecx, edi
call fcn.10004dd0
mov ecx, dword [edi + 0xc]
xorps xmm0, xmm0
test esi, esi
lea eax, [ecx + 0x10]
mov dword [edi + 0xc], eax
mov eax, esi
cdq
movups xmmword [ecx], xmm0
mov dword [ecx], eax
mov eax, 0xb6
mov dword [ecx + 4], edx
mov edx, 0x1f6
cmovns eax, edx
mov word [ecx + 0xe], ax
jmp 0x10004bbe
cmp eax, 0x10
jge 0x10004b79
push ecx
mov ecx, edi
call fcn.10004dd0
mov ecx, dword [edi + 0xc]
xorps xmm0, xmm0
lea eax, [ecx + 0x10]
mov dword [edi + 0xc], eax
mov eax, dword [ebp - 0x40]
movups xmmword [ecx], xmm0
mov dword [ecx], eax
shr eax, 0x1a
not eax
mov dword [ecx + 4], 0
and eax, 0x20
or eax, 0x1d6
mov word [ecx + 0xe], ax
jmp 0x10004bbe
lea eax, [ecx + 0x18]
sub esi, edi
mov ecx, 3
mov edi, 4
mov edx, eax
add edx, edi
mov dword [eax], ecx
mov dword [edx], esi
mov ecx, dword [ebp - 0x60]
movq xmm0, qword [ebp - 0x24]
mov eax, dword [ebp - 0x50]
movq qword [ecx], xmm0
mov dword [ecx + 8], eax
mov ecx, dword [ebp - 0xc]
mov dword fs:[0], ecx
pop ecx
pop edi
pop esi
mov ecx, dword [ebp - 0x14]
xor ecx, ebp
call fcn.10007cf8
mov esp, ebp
pop ebp
mov esp, ebx
pop ebx
ret 8