Function at 0x419ccf
Capabilities:
Encode data using xor
Hash data using fnv
Parse credit card information
Query environment variable
Read .ini file

Disassembly:
cmp ecx, 0x100
jae 0x416bfc
cmp byte [esi], 0x40
je 0x419d5f
cmp byte [esi], 0x2e
jne 0x419ddc
cmp byte [esi + 1], 0x2e
je 0x419ddc
cmp dword [0x43107c], 0
je 0x419ddc
push edi
mov edi, dword [0x43100c]
sub edi, 2
sub edi, ecx
push ecx
push esi
mov esi, dword [0x43107c]
lodsb al, byte [esi]
movzx ecx, al
sub edi, ecx
cmp edi, dword [0x43102c]
jb 0x416a37
mov word [edi], 0
add edi, 2
mov ebx, edi
rep movsb byte es:[edi], byte [esi]
pop esi
pop ecx
add al, cl
jb 0x416bfc
rep movsb byte es:[edi], byte [esi]
pop edi
push ebx
push esi
movzx ecx, al
mov byte [ebx - 1], al
mov esi, ebx
call fcn.00419ccf
pop esi
pop ebx
cmp ebx, dword [eax + 0x18]
jne 0x419d5e
lea edx, [ebx - 2]
mov dword [0x43100c], edx
ret
cmp ecx, 2
jne 0x419ddc
mov al, byte [esi + 1]
mov ebx, 0x43119b
xlatb
cmp al, 0x40
je 0x419dba
cmp al, 0x62
je 0x419da0
cmp al, 0x72
je 0x419da0
cmp al, 0x66
jne 0x419ddc
add esi, 2
mov eax, dword [0x431084]
or eax, eax
jne 0x419d9d
mov eax, dword [0x431048]
mov dword [0x4310b0], eax
call fcn.00419fac
mov dword [0x431084], eax
xor ebx, ebx
ret
mov eax, dword [0x431080]
add esi, 2
or eax, eax
je 0x419dae
jmp 0x419d9d
call fcn.00419fac
mov dword [0x431080], eax
jmp 0x419d9d
add esi, 2
mov eax, dword [0x431084]
or eax, eax
jne 0x419dcb
call fcn.00419fac
mov dword [0x431080], eax
mov dword [0x431084], 0
jmp 0x419d9d
cmp byte [esi], 0x25
je 0x419e42
cmp byte [esi], 0x24
je 0x419df7
cmp byte [esi], 0x3f
jne 0x419e5b
cmp ecx, 1
jne 0x419e5b
inc esi
mov eax, 0xf
ret
cmp ecx, 3
je 0x419e31
ja 0x419e5b
inc esi
cmp ecx, 1
jbe 0x419e16
inc esi
cmp byte [esi - 1], 0x24
je 0x419e25
cmp byte [esi - 1], 0x25
je 0x419e2b
sub esi, 2
jmp 0x419e5b
xor eax, eax
ret
mov eax, 1
ret
mov eax, 2
ret
mov eax, 3
ret
mov eax, 4
ret
cmp word [esi + 1], 0x2525
jne 0x419e5b
add esi, 3
mov eax, 5
ret
cmp ecx, 2
ja 0x419e5b
inc esi
cmp cl, 1
je 0x419e19
lodsb al, byte [esi]
mov ebx, 0x43119b
xlatb
cmp al, 0x74
je 0x419e1f
sub esi, 2
xor ebx, ebx
mov eax, 0x811c9dc5
mov ebp, 0x1000193
xor al, byte [esi + ebx]
mul ebp
inc bl
cmp bl, cl
jb 0x419e67
mov ebp, eax
shl eax, 8
and ebp, 0xff000000
xor ebp, eax
or ebp, ebx
mov dword [0x43108c], ebp
push edi
push esi
push ecx
mov ecx, 0x20
mov ebx, 0x431094
mov edx, dword [ebx]
or edx, edx
je 0x419eda
xor eax, eax
shl ebp, 1
adc eax, 0
lea ebx, [edx + eax*4]
dec ecx
jne 0x419e94
mov dword [0x431090], ebx
pop edx
mov eax, dword [ebx]
or eax, eax
je 0x419f0f
mov ebx, esi
mov ebp, dword [0x43108c]
mov esi, ebx
mov ecx, edx
mov edi, dword [eax + 4]
mov edi, dword [edi + 0x18]
repe cmpsb byte [esi], byte es:[edi]
je 0x419ed2
mov eax, dword [eax]
or eax, eax
jne 0x419ebc
jmp 0x419f0f
add esp, 4
pop edi
mov eax, dword [eax + 4]
ret
mov edx, dword [0x43102c]
lea eax, [edx + 8]
cmp eax, dword [0x43100c]
ja 0x416a37
mov dword [0x43102c], eax
xor eax, eax
mov dword [edx], eax
mov dword [edx + 4], eax
shl ebp, 1
adc eax, 0
mov dword [ebx], edx
lea ebx, [edx + eax*4]
dec ecx
jne 0x419eda
mov dword [0x431090], ebx
pop edx
mov ecx, edx
pop esi
cmp byte [esi - 2], 0
je 0x419f76
mov al, byte [esi]
cmp al, 0x30
jb 0x419f22
cmp al, 0x39
jbe 0x419f26
cmp al, 0x24
jne 0x419f2f
add esi, ecx
mov eax, 0xf
pop edi
ret
call fcn.00419c68
jae 0x419f28
call fcn.00419c3c
jae 0x419f28
call fcn.00419bbe
jae 0x419f28
sub esi, 2
mov edi, 0x42a704
call fcn.00419b58
or al, al
jne 0x419f28
mov edi, 0x42a72e
call fcn.00419b58
or al, al
jne 0x419f28
mov edi, 0x42a74e
call fcn.00419b58
or al, al
jne 0x419f28
inc esi
movzx ecx, byte [esi]
inc esi
mov edx, dword [0x43102c]
lea eax, [edx + 8]
cmp eax, dword [0x43100c]
ja 0x416a37
mov dword [0x43102c], eax
mov ebx, esi
add esi, ecx
mov eax, dword [0x431090]
mov edi, dword [eax]
mov dword [edx], edi
mov dword [eax], edx
call fcn.00419fac
mov dword [edx + 4], eax
mov dword [eax + 0x18], ebx
pop edi
ret