Function at 0x10003c7a
Capabilities:
Validate payment card number using luhn algorithm

Disassembly:
push 8
push 0x38
mov eax, 0x100506b8
call fcn.1004fe83
mov edx, ecx
mov dword [ebp - 0x1c], edx
mov eax, dword [ebx + 8]
lea edi, [ebp - 0x48]
mov esi, eax
movsd dword es:[edi], dword [esi]
movsd dword es:[edi], dword [esi]
movsd dword es:[edi], dword [esi]
mov dword [ebp - 0x3c], eax
and dword [ebp - 4], 0
xorps xmm1, xmm1
mov esi, dword [ebp - 0x48]
mov eax, esi
sub eax, dword [ebp - 0x40]
mov dword [ebp - 0x30], eax
cmp byte [esi], 0x2d
jne 0x10003cba
inc esi
mov ch, 1
mov dword [ebp - 0x48], esi
jmp 0x10003cbc
xor ch, ch
mov al, byte [esi]
xorps xmm0, xmm0
and dword [ebp - 0x20], 0
mov byte [ebp - 0x13], ch
movlpd qword [ebp - 0x38], xmm0
mov byte [ebp - 0x12], 0
cmp al, 0x30
jne 0x10003ce4
and dword [ebp - 0x2c], 0
lea edi, [esi + 1]
mov dword [ebp - 0x48], edi
jmp 0x10003da5
cmp al, 0x31
jl 0x10004278
cmp al, 0x39
jg 0x10004278
movsx eax, al
lea edi, [esi + 1]
mov cl, byte [edi]
sub eax, 0x30
mov dword [ebp - 0x48], edi
mov dword [ebp - 0x2c], eax
test ch, ch
je 0x10003d60
cmp cl, 0x30
jl 0x10003da5
mov esi, edi
mov dword [ebp - 0x28], edi
cmp cl, 0x39
ja 0x10003da5
cmp eax, 0xccccccc
jb 0x10003d31
jne 0x10003d56
mov esi, dword [ebp - 0x28]
cmp cl, 0x38
ja 0x10003d56
imul ecx, eax, 0xa
lea edi, [esi + 1]
movsx eax, byte [esi]
mov esi, edi
add eax, 0xffffffd0
mov dword [ebp - 0x48], edi
mov dword [ebp - 0x28], edi
add eax, ecx
mov cl, byte [edi]
inc dword [ebp - 0x20]
mov dword [ebp - 0x2c], eax
cmp cl, 0x30
jge 0x10003d17
jmp 0x10003da5
mov ecx, eax
mov byte [ebp - 0x12], 1
xor eax, eax
jmp 0x10003dab
cmp cl, 0x30
jl 0x10003da5
mov cl, byte [edi]
mov esi, edi
mov dword [ebp - 0x28], edi
cmp cl, 0x39
jg 0x10003da5
cmp eax, 0x19999999
jb 0x10003d82
jne 0x10003d56
mov esi, dword [ebp - 0x28]
cmp cl, 0x35
jg 0x10003d56
imul ecx, eax, 0xa
lea edi, [esi + 1]
movsx eax, byte [esi]
mov esi, edi
add eax, 0xffffffd0
mov dword [ebp - 0x48], edi
mov dword [ebp - 0x28], edi
add eax, ecx
mov cl, byte [edi]
inc dword [ebp - 0x20]
mov dword [ebp - 0x2c], eax
cmp cl, 0x30
jge 0x10003d6c
mov ecx, dword [ebp - 0x38]
mov eax, dword [ebp - 0x34]
cmp byte [ebp - 0x12], 0
mov dword [ebp - 0x18], ecx
mov dword [ebp - 0x24], eax
mov byte [ebp - 0x11], 0
je 0x10003eef
cmp byte [ebp - 0x13], 0
je 0x10003e5d
cmp byte [edi], 0x30
mov edx, dword [ebp - 0x1c]
jl 0x10003eef
mov dl, byte [edi]
mov esi, edi
mov dword [ebp - 0x28], esi
cmp dl, 0x39
ja 0x10003eec
cmp eax, 0xccccccc
jb 0x10003e19
ja 0x10003df6
cmp ecx, 0xcccccccc
jb 0x10003e19
cmp ecx, 0xcccccccc
jne 0x10003ede
cmp eax, 0xccccccc
jne 0x10003ede
mov esi, dword [ebp - 0x28]
cmp dl, 0x38
ja 0x10003ede
movsx edi, byte [esi]
lea ecx, [esi + 1]
mov dword [ebp - 0x48], ecx
sub edi, 0x30
push 0xa
pop ecx
mul ecx
push 0xa
mov ecx, eax
xor esi, esi
mov eax, dword [ebp - 0x18]
pop edx
mul edx
add ecx, edx
add edi, eax
adc esi, ecx
inc dword [ebp - 0x20]
mov ecx, edi
mov eax, esi
mov edi, dword [ebp - 0x48]
mov esi, edi
mov dword [ebp - 0x18], ecx
mov dword [ebp - 0x24], eax
mov dword [ebp - 0x28], edi
mov dl, byte [edi]
cmp dl, 0x30
jge 0x10003ddc
jmp 0x10003eec
cmp byte [edi], 0x30
mov ecx, dword [ebp - 0x18]
jl 0x10003eef
mov dl, byte [edi]
mov esi, edi
mov dword [ebp - 0x28], esi
cmp dl, 0x39
ja 0x10003eec
cmp eax, 0x19999999
jb 0x10003e9d
ja 0x10003e86
cmp ecx, 0x99999999
jb 0x10003e9d
cmp ecx, 0x99999999
jne 0x10003ede
cmp eax, 0x19999999
jne 0x10003ede
mov esi, dword [ebp - 0x28]
cmp dl, 0x35
ja 0x10003ede
movsx edi, byte [esi]
lea ecx, [esi + 1]
mov dword [ebp - 0x48], ecx
sub edi, 0x30
push 0xa
pop ecx
mul ecx
push 0xa
mov ecx, eax
xor esi, esi
mov eax, dword [ebp - 0x18]
pop edx
mul edx
add ecx, edx
add edi, eax
adc esi, ecx
inc dword [ebp - 0x20]
mov ecx, edi
mov eax, esi
mov edi, dword [ebp - 0x48]
mov esi, edi
mov dword [ebp - 0x18], ecx
mov dword [ebp - 0x24], eax
mov dword [ebp - 0x28], edi
mov dl, byte [edi]
cmp dl, 0x30
jge 0x10003e70
jmp 0x10003eec
mov edx, eax
call fcn.100503d0
mov byte [ebp - 0x11], 1
movaps xmm1, xmm0
mov edx, dword [ebp - 0x1c]
cmp byte [ebp - 0x11], 0
je 0x10003f29
mov al, byte [edi]
cmp al, 0x30
jl 0x10003f29
mov ecx, edi
cmp al, 0x39
ja 0x10003f26
movsx eax, byte [ecx]
lea edi, [ecx + 1]
mulsd xmm1, qword [0x10058800]
sub eax, 0x30
mov ecx, edi
movd xmm0, eax
mov al, byte [edi]
cvtdq2pd xmm0, xmm0
addsd xmm1, xmm0
cmp al, 0x30
jge 0x10003efd
mov dword [ebp - 0x48], edi
mov al, byte [edi]
and dword [ebp - 0x28], 0
cmp al, 0x2e
jne 0x10003f37
inc edi
mov dword [ebp - 0x48], edi
mov esi, edi
cmp al, 0x2e
jne 0x10003fe1
mov al, byte [esi]
cmp al, 0x30
jl 0x10004007
cmp al, 0x39
jg 0x10004007
mov al, byte [ebp - 0x11]
test al, al
jne 0x10003f7a
cmp byte [ebp - 0x12], al
je 0x10003f67
mov ecx, dword [ebp - 0x18]
mov edx, dword [ebp - 0x24]
jmp 0x10003f6c
mov ecx, dword [ebp - 0x2c]
xor edx, edx
call fcn.100503d0
movaps xmm1, xmm0
mov byte [ebp - 0x11], 1
jmp 0x10003f7d
mov byte [ebp - 0x11], al
mov cl, byte [edi]
mov eax, esi
mov dword [ebp - 0x34], esi
mov edx, esi
mov edi, esi
mov esi, edx
cmp cl, 0x39
jg 0x10003fe1
mov edx, dword [ebp - 0x20]
cmp edx, 0x11
jge 0x10003fcc
mulsd xmm1, qword [0x10058800]
lea esi, [eax + 1]
movsx eax, byte [eax]
mov ecx, esi
sub eax, 0x30
mov dword [ebp - 0x48], ecx
dec dword [ebp - 0x28]
movd xmm0, eax
cvtdq2pd xmm0, xmm0
addsd xmm1, xmm0
comisd xmm1, xmmword [0x10058708]
jbe 0x10003fd4
inc edx
mov dword [ebp - 0x20], edx
jmp 0x10003fd4
lea esi, [edi + 1]
mov ecx, esi
mov dword [ebp - 0x48], ecx
mov cl, byte [ecx]
mov eax, esi
mov edi, eax
mov edx, eax
cmp cl, 0x30
jge 0x10003f88
xor ecx, ecx
cmp byte [esi], 0x65
je 0x10003ff1
cmp byte [esi], 0x45
jne 0x100040bb
inc esi
mov dword [ebp - 0x48], esi
cmp byte [ebp - 0x11], cl
jne 0x10004025
cmp byte [ebp - 0x12], cl
je 0x10004014
mov ecx, dword [ebp - 0x18]
mov edx, dword [ebp - 0x24]
jmp 0x10004019
mov dword [ebp - 0x30], edx
mov edx, dword [ebp - 0x1c]
push 0xe
jmp 0x1000427d
mov ecx, dword [ebp - 0x2c]
xor edx, edx
call fcn.100503d0
movaps xmm1, xmm0
mov byte [ebp - 0x11], 1
xor dl, dl
cmp byte [esi], 0x2b
je 0x10004033
cmp byte [esi], 0x2d
jne 0x10004037
inc dl
inc esi
mov dword [ebp - 0x48], esi
mov cl, byte [esi]
mov al, cl
sub al, 0x30
cmp al, 9
ja 0x10004140
inc esi
movsx ecx, cl
sub ecx, 0x30
mov dword [ebp - 0x48], esi
mov al, byte [esi]
mov byte [ebp - 0x14], al
test dl, dl
je 0x1000410c
mov eax, dword [ebp - 0x28]
add eax, 0x7ffffff7
push 0xa
pop edi
cdq
idiv edi
cmp byte [ebp - 0x14], 0x30
mov edi, eax
mov dword [ebp - 0x34], edi
jl 0x100040b9
mov dl, byte [esi]
cmp dl, 0x39
jg 0x100040b9
movsx eax, byte [esi]
lea edx, [esi + 1]
imul ecx, ecx, 0xa
mov esi, edx
mov dword [ebp - 0x48], edx
add ecx, 0xffffffd0
add ecx, eax
cmp ecx, edi
jle 0x100040b2
mov al, byte [edx]
cmp al, 0x30
jl 0x100040b2
mov edi, edx
cmp al, 0x39
ja 0x100040ac
lea esi, [edi + 1]
mov edx, esi
mov edi, esi
mov al, byte [edx]
cmp al, 0x30
jge 0x1000409b
mov edi, dword [ebp - 0x34]
mov dword [ebp - 0x48], edx
mov dl, byte [edx]
cmp dl, 0x30
jge 0x10004077
neg ecx
mov edx, dword [ebp - 0x28]
cmp byte [ebp - 0x11], 0
je 0x100041a8
lea eax, [ecx + edx]
mov edx, 0xfffffecc
cmp eax, edx
jge 0x100040dc
divsd xmm1, qword [0x10058920]
lea ecx, [eax + 0x134]
movaps xmm0, xmm1
cmovge ecx, eax
call fcn.10003153
comisd xmm0, xmmword [0x10058928]
jbe 0x10004155
mov eax, dword [ebp - 0x1c]
mov dword [eax + 0x18], 0xd
mov ecx, dword [ebp - 0x30]
mov dword [eax + 0x1c], ecx
jmp 0x10004290
mov edx, dword [ebp - 0x28]
mov edi, 0x134
sub edi, edx
cmp al, 0x30
jl 0x100040be
cmp al, 0x39
jg 0x100040bb
movsx eax, byte [esi]
lea edx, [esi + 1]
imul ecx, ecx, 0xa
mov dword [ebp - 0x48], edx
add ecx, 0xffffffd0
add ecx, eax
cmp ecx, edi
jg 0x100040f7
mov al, byte [edx]
mov esi, edx
cmp al, 0x30
jge 0x1000411a
jmp 0x100040bb
mov eax, dword [ebp - 0x1c]
sub esi, dword [ebp - 0x40]
mov dword [eax + 0x18], 0xf
mov dword [eax + 0x1c], esi
jmp 0x10004290
cmp byte [ebp - 0x13], 0
je 0x10004162
xorps xmm0, xmmword [0x10058fe0]
mov ecx, dword [ebx + 0xc]
movsd qword [ebp - 0x38], xmm0
lea esi, [ecx + 0x18]
mov eax, dword [esi + 0x10]
sub eax, dword [esi + 0xc]
cmp eax, 0x10
jge 0x10004185
push ecx
mov ecx, esi
call fcn.100046bb
movsd xmm0, qword [ebp - 0x38]
mov ecx, dword [esi + 0xc]
mov edi, ecx
lea eax, [ecx + 0x10]
mov dword [esi + 0xc], eax
xor eax, eax
stosd dword es:[edi], eax
stosd dword es:[edi], eax
stosd dword es:[edi], eax
stosd dword es:[edi], eax
mov eax, 0x216
movsd qword [ecx], xmm0
mov word [ecx + 0xe], ax
jmp 0x10004290
cmp byte [ebp - 0x12], 0
je 0x100041f2
cmp byte [ebp - 0x13], 0
je 0x100041cd
mov ecx, dword [ebp - 0x18]
mov eax, dword [ebp - 0x24]
neg ecx
adc eax, 0
neg eax
push eax
push ecx
mov ecx, dword [ebx + 0xc]
call fcn.10004487
jmp 0x100041db
push dword [ebp - 0x24]
mov ecx, dword [ebx + 0xc]
push dword [ebp - 0x18]
call fcn.10004406
test al, al
jne 0x10004290
mov eax, dword [ebp - 0x1c]
mov dword [eax + 0x18], 0x10
jmp 0x10004101
mov edi, dword [ebx + 0xc]
mov eax, dword [edi + 0x28]
lea ecx, [edi + 0x18]
sub eax, dword [edi + 0x24]
cmp byte [ebp - 0x13], 0
je 0x10004241
mov esi, dword [ebp - 0x2c]
neg esi
cmp eax, 0x10
jge 0x10004214
push ecx
call fcn.100046bb
mov ecx, dword [edi + 0x24]
lea eax, [ecx + 0x10]
mov dword [edi + 0x24], eax
xor eax, eax
mov edi, ecx
test esi, esi
stosd dword es:[edi], eax
stosd dword es:[edi], eax
stosd dword es:[edi], eax
stosd dword es:[edi], eax
mov eax, esi
cdq
mov dword [ecx], eax
mov eax, 0xb6
mov dword [ecx + 4], edx
mov edx, 0x1f6
cmovns eax, edx
jmp 0x1000419f
cmp eax, 0x10
jge 0x1000424c
push ecx
call fcn.100046bb
mov ecx, dword [edi + 0x24]
lea eax, [ecx + 0x10]
mov dword [edi + 0x24], eax
xor eax, eax
mov edi, ecx
stosd dword es:[edi], eax
stosd dword es:[edi], eax
stosd dword es:[edi], eax
stosd dword es:[edi], eax
mov eax, dword [ebp - 0x2c]
and dword [ecx + 4], 0
mov dword [ecx], eax
shr eax, 0x1a
not eax
and eax, 0x20
or eax, 0x1d6
jmp 0x1000419f
push 3
mov dword [ebp - 0x30], edx
sub esi, dword [ebp - 0x40]
pop eax
push 0x1c
pop edi
push 0x18
pop ecx
mov dword [ecx + edx], eax
mov ecx, dword [ebp - 0x30]
mov dword [ecx + edi], esi
mov edi, dword [ebx + 8]
lea esi, [ebp - 0x48]
movsd dword es:[edi], dword [esi]
movsd dword es:[edi], dword [esi]
movsd dword es:[edi], dword [esi]
call fcn.1004fe00
ret 8