Function at 0x10007cf0
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 0x100c2fed
mov eax, dword fs:[0]
push eax
push ebx
sub esp, 0x50
push esi
push edi
mov eax, dword [0x100db040]
xor eax, ebp
push eax
lea eax, [ebp - 0xc]
mov dword fs:[0], eax
mov edx, ecx
mov dword [ebp - 0x30], edx
mov eax, dword [ebx + 8]
mov dword [ebp - 0x54], eax
movq xmm0, qword [eax]
mov ecx, dword [eax + 8]
movq qword [ebp - 0x60], xmm0
mov dword [ebp - 0x20], ecx
mov dword [ebp - 0x58], ecx
mov dword [ebp - 4], 0
xorps xmm0, xmm0
mov eax, dword [ebp - 0x60]
xorps xmm1, xmm1
mov esi, eax
movsd qword [ebp - 0x50], xmm0
sub esi, ecx
mov dword [ebp - 0x3c], esi
cmp byte [eax], 0x2d
jne 0x10007d73
inc eax
mov byte [ebp - 0x13], 1
mov dword [ebp - 0x60], eax
jmp 0x10007d77
mov byte [ebp - 0x13], 0
mov cl, byte [eax]
xor esi, esi
movlpd qword [ebp - 0x48], xmm0
mov byte [ebp - 0x11], 0
mov dword [ebp - 0x2c], esi
cmp cl, 0x30
jne 0x10007d9a
lea edi, [eax + 1]
mov dword [ebp - 0x24], esi
mov dword [ebp - 0x60], edi
jmp 0x10007e56
cmp cl, 0x31
jl 0x100084b1
cmp cl, 0x39
jg 0x100084b1
lea edi, [eax + 1]
movsx ecx, cl
mov al, byte [edi]
sub ecx, 0x30
cmp byte [ebp - 0x13], 0
mov dword [ebp - 0x60], edi
mov dword [ebp - 0x24], ecx
je 0x10007e17
cmp al, 0x30
jl 0x10007e56
mov edx, edi
cmp al, 0x39
ja 0x10007e56
cmp ecx, 0xccccccc
jb 0x10007de5
jne 0x10007e0c
mov edx, edi
cmp al, 0x38
ja 0x10007e0c
movsx eax, byte [edx]
lea ecx, [ecx + ecx*4]
lea edi, [edx + 1]
inc esi
lea ecx, [ecx - 0x18]
mov dword [ebp - 0x60], edi
mov dword [ebp - 0x2c], esi
lea ecx, [eax + ecx*2]
mov al, byte [edi]
mov dword [ebp - 0x24], ecx
cmp al, 0x30
jl 0x10007e56
mov edx, edi
cmp al, 0x39
jle 0x10007dd5
jmp 0x10007e56
mov dl, 1
mov eax, ecx
xor ecx, ecx
mov byte [ebp - 0x11], dl
jmp 0x10007e5f
cmp al, 0x30
jl 0x10007e56
mov edx, edi
cmp al, 0x39
jg 0x10007e56
cmp ecx, 0x19999999
jb 0x10007e31
jne 0x10007e0c
mov edx, edi
cmp al, 0x35
jg 0x10007e0c
movsx eax, byte [edx]
lea ecx, [ecx + ecx*4]
lea edi, [edx + 1]
inc esi
lea ecx, [ecx - 0x18]
mov dword [ebp - 0x60], edi
mov dword [ebp - 0x2c], esi
lea ecx, [eax + ecx*2]
mov al, byte [edi]
mov dword [ebp - 0x24], ecx
cmp al, 0x30
jl 0x10007e56
mov edx, edi
cmp al, 0x39
jle 0x10007e21
mov eax, dword [ebp - 0x48]
mov ecx, dword [ebp - 0x44]
mov dl, byte [ebp - 0x11]
xor dh, dh
mov dword [ebp - 0x1c], eax
mov dword [ebp - 0x18], ecx
mov byte [ebp - 0x12], dh
test dl, dl
je 0x10007f98
mov dl, byte [edi]
cmp byte [ebp - 0x13], dh
je 0x10007f1b
cmp dl, 0x30
jl 0x10007f95
mov esi, edi
cmp dl, 0x39
jg 0x10007f95
cmp ecx, 0xccccccc
jb 0x10007eb8
ja 0x10007ea2
cmp eax, 0xcccccccc
jb 0x10007eb8
cmp eax, 0xcccccccc
jne 0x10007f05
cmp ecx, 0xccccccc
jne 0x10007f05
mov esi, edi
cmp dl, 0x38
ja 0x10007f05
shld ecx, eax, 2
lea edi, [esi + 1]
xor edx, edx
movsx esi, byte [esi]
shl eax, 2
sub esi, 0x30
add dword [ebp - 0x1c], eax
mov eax, dword [ebp - 0x1c]
adc dword [ebp - 0x18], ecx
mov ecx, dword [ebp - 0x18]
shld ecx, eax, 1
mov dword [ebp - 0x60], edi
add eax, eax
add eax, esi
mov dword [ebp - 0x1c], eax
adc edx, ecx
inc dword [ebp - 0x2c]
mov ecx, edx
mov dl, byte [edi]
mov dword [ebp - 0x18], ecx
cmp dl, 0x30
jl 0x10007f92
mov esi, edi
cmp dl, 0x39
jle 0x10007e91
jmp 0x10007f92
mov edx, ecx
mov ecx, eax
call fcn.100c1150
mov dh, 1
movaps xmm1, xmm0
mov byte [ebp - 0x12], dh
jmp 0x10007f95
cmp dl, 0x30
jl 0x10007f95
mov esi, edi
cmp dl, 0x39
jg 0x10007f95
cmp ecx, 0x19999999
jb 0x10007f4e
ja 0x10007f38
cmp eax, 0x99999999
jb 0x10007f4e
cmp eax, 0x99999999
jne 0x10007f05
cmp ecx, 0x19999999
jne 0x10007f05
mov esi, edi
cmp dl, 0x35
ja 0x10007f05
shld ecx, eax, 2
lea edi, [esi + 1]
xor edx, edx
movsx esi, byte [esi]
shl eax, 2
sub esi, 0x30
add dword [ebp - 0x1c], eax
mov eax, dword [ebp - 0x1c]
adc dword [ebp - 0x18], ecx
mov ecx, dword [ebp - 0x18]
shld ecx, eax, 1
mov dword [ebp - 0x60], edi
add eax, eax
add eax, esi
mov dword [ebp - 0x1c], eax
adc edx, ecx
inc dword [ebp - 0x2c]
mov ecx, edx
mov dl, byte [edi]
mov dword [ebp - 0x18], ecx
cmp dl, 0x30
jl 0x10007f92
mov esi, edi
cmp dl, 0x39
jle 0x10007f27
mov dh, byte [ebp - 0x12]
mov dl, byte [ebp - 0x11]
movsd xmm2, qword [0x100d1908]
test dh, dh
je 0x10007fd8
mov al, byte [edi]
cmp al, 0x30
jl 0x10007fd8
mov ecx, edi
nop dword [eax]
cmp al, 0x39
ja 0x10007fd5
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 0x10007fb0
mov dword [ebp - 0x60], edi
mov cl, byte [edi]
mov dword [ebp - 0x28], 0
cmp cl, 0x2e
jne 0x10007ff1
inc edi
mov eax, edi
mov dword [ebp - 0x60], edi
mov dword [ebp - 0x38], eax
jmp 0x10007ff6
mov eax, edi
mov dword [ebp - 0x38], edi
cmp cl, 0x2e
jne 0x100080c8
mov cl, byte [eax]
cmp cl, 0x30
jl 0x100080b1
cmp cl, 0x39
jg 0x100080b1
mov cl, byte [ebp - 0x12]
mov esi, dword [ebp - 0x24]
test cl, cl
jne 0x10008045
test dl, dl
je 0x10008029
mov ecx, dword [ebp - 0x1c]
mov edx, dword [ebp - 0x18]
jmp 0x1000802d
mov ecx, esi
xor edx, edx
call fcn.100c1150
movsd xmm2, qword [0x100d1908]
movaps xmm1, xmm0
mov byte [ebp - 0x12], 1
mov eax, edi
jmp 0x10008048
mov byte [ebp - 0x12], cl
mov dl, byte [edi]
xorps xmm3, xmm3
mov edi, dword [ebp - 0x2c]
mov dword [ebp - 0x44], eax
mov dword [ebp - 0x34], eax
mov dword [ebp - 0x38], eax
nop dword [eax]
mov ecx, dword [ebp - 0x38]
cmp dl, 0x39
jg 0x100080ce
cmp edi, 0x11
jge 0x10008097
dec dword [ebp - 0x28]
lea ecx, [eax + 1]
movsx eax, byte [eax]
mov edx, ecx
sub eax, 0x30
mulsd xmm1, xmm2
mov dword [ebp - 0x60], edx
movd xmm0, eax
cvtdq2pd xmm0, xmm0
addsd xmm1, xmm0
comisd xmm1, xmm3
jbe 0x100080a0
inc edi
jmp 0x100080a0
mov ecx, dword [ebp - 0x34]
inc ecx
mov edx, ecx
mov dword [ebp - 0x60], edx
mov dl, byte [edx]
mov eax, ecx
mov dword [ebp - 0x34], ecx
mov dword [ebp - 0x38], eax
cmp dl, 0x30
jge 0x10008060
jmp 0x100080ce
mov ecx, dword [ebp - 0x30]
mov esi, dword [ebp - 0x20]
sub eax, esi
mov dword [ecx + 0x18], 0xe
mov dword [ecx + 0x1c], eax
jmp 0x100084c0
mov esi, dword [ebp - 0x24]
mov ecx, dword [ebp - 0x38]
xor edi, edi
cmp byte [ecx], 0x65
je 0x100080de
cmp byte [ecx], 0x45
jne 0x100081ac
cmp byte [ebp - 0x12], 0
lea edi, [ecx + 1]
mov dword [ebp - 0x60], edi
jne 0x10008108
cmp byte [ebp - 0x11], 0
je 0x100080f8
mov esi, dword [ebp - 0x1c]
mov edx, dword [ebp - 0x18]
jmp 0x100080fa
xor edx, edx
mov ecx, esi
call fcn.100c1150
movaps xmm1, xmm0
mov byte [ebp - 0x12], 1
mov cl, byte [edi]
xor dl, dl
cmp cl, 0x2b
je 0x10008118
cmp cl, 0x2d
jne 0x1000811f
mov dl, 1
mov cl, byte [edi + 1]
inc edi
mov dword [ebp - 0x60], edi
lea eax, [ecx - 0x30]
cmp al, 9
ja 0x10008227
lea esi, [edi + 1]
movsx edi, cl
mov cl, byte [esi]
sub edi, 0x30
mov dword [ebp - 0x60], esi
mov byte [ebp - 0x14], cl
test dl, dl
je 0x100081ee
mov ecx, dword [ebp - 0x28]
mov eax, 0x66666667
add ecx, 0x7ffffff7
imul ecx
sar edx, 2
mov eax, edx
shr eax, 0x1f
add eax, edx
cmp byte [ebp - 0x14], 0x30
mov dword [ebp - 0x44], eax
jl 0x100081aa
mov al, byte [esi]
cmp al, 0x39
jg 0x100081aa
movsx eax, byte [esi]
lea ecx, [edi + edi*4]
lea edi, [ecx - 0x18]
lea edx, [esi + 1]
mov dword [ebp - 0x60], edx
mov esi, edx
lea edi, [eax + edi*2]
cmp edi, dword [ebp - 0x44]
jle 0x100081a4
mov al, byte [edx]
cmp al, 0x30
jl 0x100081a4
mov ecx, edx
nop dword [eax]
cmp al, 0x39
ja 0x100081a1
lea esi, [ecx + 1]
mov edx, esi
mov ecx, esi
mov al, byte [edx]
cmp al, 0x30
jge 0x10008190
mov dword [ebp - 0x60], edx
mov al, byte [edx]
cmp al, 0x30
jge 0x10008168
neg edi
mov edx, dword [ebp - 0x28]
cmp byte [ebp - 0x12], 0
je 0x100082df
lea eax, [edi + edx]
cmp eax, 0xfffffecc
jge 0x1000823e
divsd xmm1, qword [0x100d1ef0]
add eax, 0x134
cmp eax, 0xfffffecc
jl 0x10008266
shl eax, 3
mov ecx, 0x100cdde8
sub ecx, eax
movaps xmm0, xmm1
divsd xmm0, qword [ecx]
jmp 0x10008261
mov edx, dword [ebp - 0x28]
mov eax, 0x134
sub eax, edx
mov dword [ebp - 0x44], eax
cmp cl, 0x30
jl 0x100081af
mov al, byte [esi]
cmp al, 0x39
jg 0x100081ac
movsx eax, byte [esi]
lea ecx, [edi + edi*4]
lea edi, [ecx - 0x18]
lea edx, [esi + 1]
mov dword [ebp - 0x60], edx
lea edi, [eax + edi*2]
cmp edi, dword [ebp - 0x44]
jg 0x10008275
mov al, byte [edx]
mov esi, edx
cmp al, 0x30
jge 0x10008202
jmp 0x100081ac
mov ecx, dword [ebp - 0x30]
mov esi, dword [ebp - 0x20]
sub edi, esi
mov dword [ecx + 0x18], 0xf
mov dword [ecx + 0x1c], edi
jmp 0x100084c0
lea ecx, [eax*8]
movaps xmm0, xmm1
test eax, eax
js 0x10008256
mulsd xmm0, qword [ecx + 0x100cdde8]
jmp 0x10008261
mov eax, 0x100cdde8
sub eax, ecx
divsd xmm0, qword [eax]
movsd qword [ebp - 0x50], xmm0
movsd xmm0, qword [ebp - 0x50]
comisd xmm0, xmmword [0x100d1ef8]
jbe 0x1000828d
mov ecx, dword [ebp - 0x30]
mov eax, dword [ebp - 0x3c]
mov dword [ecx + 0x18], 0xd
mov dword [ecx + 0x1c], eax
mov esi, dword [ebp - 0x20]
jmp 0x100084c0
cmp byte [ebp - 0x13], 0
je 0x1000829a
xorps xmm0, xmmword [0x100d23e0]
mov esi, dword [ebx + 0xc]
movsd qword [ebp - 0x50], xmm0
mov eax, dword [esi + 0x28]
sub eax, dword [esi + 0x24]
cmp eax, 0x10
jge 0x100082b6
push ecx
lea ecx, [esi + 0x18]
call fcn.100086d0
mov ecx, dword [esi + 0x24]
xorps xmm0, xmm0
movsd xmm3, qword [ebp - 0x50]
lea eax, [ecx + 0x10]
mov dword [esi + 0x24], eax
mov eax, 0x216
mov esi, dword [ebp - 0x20]
movups xmmword [ecx], xmm0
mov word [ecx + 0xe], ax
movsd qword [ecx], xmm3
jmp 0x100084c0
mov edi, dword [ebx + 0xc]
add edi, 0x18
cmp byte [ebp - 0x11], 0
mov eax, dword [edi + 0x10]
je 0x10008429
cmp byte [ebp - 0x13], 0
je 0x100083a7
mov esi, dword [ebp - 0x1c]
mov ecx, dword [ebp - 0x18]
neg esi
adc ecx, 0
sub eax, dword [edi + 0xc]
neg ecx
mov dword [ebp - 0x18], ecx
cmp eax, 0x10
jge 0x1000831f
push ecx
mov ecx, edi
call fcn.100086d0
mov ecx, dword [ebp - 0x18]
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 0x1000837f
jg 0x10008346
test esi, esi
jb 0x1000837f
mov eax, 0x196
mov word [edx + 0xe], ax
mov edi, eax
xor eax, eax
or eax, ecx
jne 0x10008362
mov eax, 0x1d6
mov word [edx + 0xe], ax
mov edi, eax
and esi, 0x80000000
or esi, ecx
jne 0x10008285
mov esi, dword [ebp - 0x20]
or edi, 0x20
mov word [edx + 0xe], di
jmp 0x100084c0
cmp ecx, 0xffffffff
jl 0x10008285
jg 0x10008396
cmp esi, 0x80000000
jb 0x10008285
mov esi, dword [ebp - 0x20]
mov eax, 0xb6
mov word [edx + 0xe], ax
jmp 0x100084c0
sub eax, dword [edi + 0xc]
cmp eax, 0x10
jge 0x100083b7
push ecx
mov ecx, edi
call fcn.100086d0
mov esi, dword [edi + 0xc]
xorps xmm0, xmm0
mov edx, dword [ebp - 0x18]
mov ecx, dword [ebp - 0x1c]
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 0x100083f1
jg 0x100083e6
test ecx, ecx
jb 0x100083f1
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 0x10008409
or edi, 0x40
mov word [esi + 0xe], di
movzx eax, di
jmp 0x1000840c
mov eax, dword [ebp - 0x44]
and ecx, 0x80000000
or ecx, edx
jne 0x10008285
or eax, 0x20
mov word [esi + 0xe], ax
mov esi, dword [ebp - 0x20]
jmp 0x100084c0
sub eax, dword [edi + 0xc]
cmp byte [ebp - 0x13], 0
je 0x10008473
mov esi, dword [ebp - 0x24]
neg esi
cmp eax, 0x10
jge 0x10008444
push ecx
mov ecx, edi
call fcn.100086d0
mov ecx, dword [edi + 0xc]
xorps xmm0, xmm0
test esi, esi
lea eax, [ecx + 0x10]
mov dword [edi + 0xc], eax
mov eax, esi
mov esi, dword [ebp - 0x20]
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 0x100084c0
cmp eax, 0x10
jge 0x10008480
push ecx
mov ecx, edi
call fcn.100086d0
mov ecx, dword [edi + 0xc]
xorps xmm0, xmm0
mov esi, dword [ebp - 0x20]
lea eax, [ecx + 0x10]
mov dword [edi + 0xc], eax
mov eax, dword [ebp - 0x24]
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 0x100084c0
mov esi, dword [ebp - 0x20]
sub eax, esi
mov dword [edx + 0x18], 3
mov dword [edx + 0x1c], eax
mov eax, dword [ebx + 8]
movq xmm0, qword [ebp - 0x60]
movq qword [eax], xmm0
mov dword [eax + 8], esi
mov ecx, dword [ebp - 0xc]
mov dword fs:[0], ecx
pop ecx
pop edi
pop esi
mov esp, ebp
pop ebp
mov esp, ebx
pop ebx
ret 8