Function at 0x423874
Capabilities:
Parse credit card information

Disassembly:
push ebp
mov ebp, esp
sub esp, 0x1c
push ebx
push esi
mov esi, dword [ebp + 0xc]
push edi
mov edi, dword [ebp + 8]
xor eax, eax
cmp edi, eax
jne 0x423893
mov eax, 0x80004005
call fcn.00422de0
cmp esi, eax
je 0x423889
cmp edi, esi
je 0x423889
mov bl, byte [edi]
lea ecx, [esi + 0x823]
mov dword [ebp - 4], eax
mov dword [ebp - 8], 1
mov dword [ebp - 0x18], eax
mov dword [ebp - 0x10], eax
mov dword [ebp - 0xc], 0x20
mov dword [ebp - 0x1c], esi
mov dword [ebp - 0x14], ecx
test bl, bl
je 0x423af8
inc edi
cmp dword [ebp - 4], 0x823
mov dword [ebp + 8], edi
jne 0x4238d8
mov dword [ebp - 8], eax
cmp bl, 0x3a
jne 0x423948
test byte [ebp - 0xc], 0x80
je 0x4239ab
cmp dword [ebp - 0x10], eax
jne 0x4239ab
cmp dword [ebp - 8], eax
je 0x42393f
mov eax, esi
sub eax, dword [ebp - 4]
mov byte [esi], 0
cmp eax, dword [ebp - 0x1c]
jb 0x423889
cmp eax, dword [ebp - 0x14]
ja 0x423889
mov ecx, dword [ebp - 0x14]
sub ecx, eax
inc ecx
push ecx
push eax
call fcn.004a0955
pop ecx
pop ecx
call fcn.00422e0f
cmp dword [ebp - 4], 4
jne 0x42393f
push 4
lea eax, [esi - 4]
push eax
push 0x519b84
call fcn.004a0438
add esp, 0xc
test eax, eax
jne 0x42393f
mov dword [ebp - 0x18], 1
mov eax, dword [ebp - 4]
inc eax
mov dword [ebp - 0x10], eax
jmp 0x4239ab
cmp bl, 0x25
jne 0x423997
test byte [ebp - 0xc], 4
je 0x4239ab
mov al, byte [edi]
test al, al
je 0x423ae9
call fcn.00423776
movzx ebx, ax
test bx, bx
js 0x423adf
mov al, byte [edi + 1]
test al, al
je 0x423ae9
add edi, 2
mov dword [ebp + 8], edi
call fcn.00423776
movzx eax, ax
test ax, ax
js 0x423ae5
shl bl, 4
add bl, al
jmp 0x4239ab
cmp bl, 0x3f
je 0x4239a1
cmp bl, 0x23
jne 0x4239ab
test byte [ebp - 0xc], 0x20
je 0x4239ab
or dword [ebp - 0xc], 2
mov eax, dword [ebp - 0xc]
test al, al
jns 0x423a16
test al, 2
jne 0x423a16
cmp bl, 0x5c
jne 0x4239dd
xor ecx, ecx
cmp dword [ebp - 0x10], ecx
jne 0x4239c9
test eax, 0x100
je 0x423a16
cmp dword [ebp - 8], ecx
je 0x423a16
cmp dword [ebp - 0x18], ecx
je 0x4239d9
cmp dword [ebp - 4], 7
jae 0x423a16
mov bl, 0x2f
jmp 0x423a16
cmp bl, 0x2e
jne 0x423a16
mov ecx, dword [ebp - 4]
test ecx, ecx
je 0x423a16
test al, 8
jne 0x423a16
push dword [ebp - 0x10]
lea edx, [ebp + 0xc]
push eax
lea eax, [ebp - 4]
push eax
lea eax, [ebp + 8]
push eax
lea eax, [esi - 1]
push edx
call fcn.004237a7
mov esi, dword [ebp + 0xc]
mov edi, dword [ebp + 8]
add esp, 0x14
test eax, eax
jne 0x423ad2
movzx ecx, bl
cmp ecx, 0x40
jg 0x423a3e
cmp ecx, 0x3b
jge 0x423a5c
cmp ecx, 0x20
je 0x423a5c
cmp ecx, 0x21
jle 0x423a55
cmp ecx, 0x26
jle 0x423a5c
cmp ecx, 0x2a
jle 0x423a55
cmp ecx, 0x2c
jle 0x423a5c
jmp 0x423a55
cmp ecx, 0x5b
jl 0x423a55
cmp ecx, 0x5e
jle 0x423a5c
cmp ecx, 0x60
je 0x423a5c
lea eax, [ecx - 0x7b]
cmp eax, 2
jbe 0x423a5c
lea eax, [ebx - 0x20]
cmp al, 0x5e
jbe 0x423ac3
mov al, byte [ebp - 0xc]
test al, 2
jne 0x423ac3
test al, 0x10
je 0x423a6c
cmp bl, 0x20
jne 0x423ac3
test al, 8
je 0x423a75
cmp bl, 0x2e
je 0x423ac3
test al, 0x40
jne 0x423a7e
cmp bl, 0x25
je 0x423ac3
cmp dword [ebp - 4], 0x820
jb 0x423a8b
and dword [ebp - 8], 0
cmp dword [ebp - 8], 0
je 0x423abd
mov byte [esi], 0x25
lea eax, [esi + 1]
cmp bl, 0x10
jae 0x423aa0
mov byte [eax], 0x30
inc eax
mov edx, dword [ebp - 0x14]
push 0x10
sub edx, eax
push edx
push eax
push ecx
call fcn.004a02de
add esp, 0x10
call fcn.00422e0f
add esi, 3
mov dword [ebp + 0xc], esi
add dword [ebp - 4], 2
jmp 0x423acf
cmp dword [ebp - 8], 0
je 0x423acf
mov byte [esi], bl
inc esi
mov dword [ebp + 0xc], esi
inc dword [ebp - 4]
mov bl, byte [edi]
test bl, bl
je 0x423ae9
xor eax, eax
jmp 0x4238c8
and dword [ebp - 8], 0
jmp 0x423afb
and dword [ebp - 8], 0
cmp dword [ebp - 8], 0
je 0x423afb
cmp dword [ebp - 4], 0x823
jae 0x423afb
mov byte [esi], 0
mov eax, dword [ebp + 0x10]
pop edi
pop esi
pop ebx
test eax, eax
je 0x423b0b
mov ecx, dword [ebp - 4]
inc ecx
mov dword [eax], ecx
mov eax, dword [ebp - 4]
inc eax
cmp eax, 0x823
jbe 0x423b1a
and dword [ebp - 8], 0
mov eax, dword [ebp - 8]
leave
ret