Function at 0x478880
Capabilities:
Encrypt data using rc4 via winapi
Encrypt or decrypt via wincrypt
Hash data via wincrypt
Hash data with md5
Initialize hashing via wincrypt

Disassembly:
push 0xffffffffffffffff
push 0x4bc3e0
mov eax, dword fs:[0]
push eax
sub esp, 0x88
mov eax, dword [0x4de57c]
xor eax, esp
mov dword [esp + 0x84], eax
push ebx
push ebp
push esi
push edi
mov eax, dword [0x4de57c]
xor eax, esp
push eax
lea eax, [esp + 0x9c]
mov dword fs:[0], eax
mov ebx, dword [esp + 0xac]
mov esi, dword [esp + 0xb4]
xor edi, edi
cmp dword [esp + 0xb0], edi
jle 0x478af2
cmp esi, edi
mov dword [esp + 0x20], edi
mov dword [esp + 0x18], edi
je 0x4789e6
mov ecx, dword [0x4dfe50]
lea eax, [esp + 0x18]
push eax
push edi
push edi
push 0x8003
push ecx
call dword [sym.imp.ADVAPI32.dll_CryptCreateHash]
test eax, eax
jne 0x47892a
lea edx, [esp + 0x14]
push edx
lea ecx, [esp + 0x2c]
mov dword [esp + 0x18], str.CryptCreateHash_error
call fcn.0048ed7b
push 0x4d4e48
lea eax, [esp + 0x2c]
push eax
call fcn.0048d98f
mov ecx, dword [esp + 0xb8]
mov edx, dword [esp + 0x18]
push edi
push ecx
push esi
push edx
call dword [sym.imp.ADVAPI32.dll_CryptHashData]
test eax, eax
jne 0x478968
lea eax, [esp + 0x14]
push eax
lea ecx, [esp + 0x2c]
mov dword [esp + 0x18], str.CryptHashData_error
call fcn.0048ed7b
push 0x4d4e48
lea ecx, [esp + 0x2c]
push ecx
call fcn.0048d98f
mov eax, dword [esp + 0x18]
mov ecx, dword [0x4dfe50]
lea edx, [esp + 0x20]
push edx
push edi
push eax
push 0x6801
push ecx
call dword [sym.imp.ADVAPI32.dll_CryptDeriveKey]
test eax, eax
jne 0x4789ae
lea edx, [esp + 0x14]
push edx
lea ecx, [esp + 0x2c]
mov dword [esp + 0x18], str.CryptDeriveKey_error
call fcn.0048ed7b
push 0x4d4e48
lea eax, [esp + 0x2c]
push eax
call fcn.0048d98f
mov ecx, dword [esp + 0x18]
push ecx
call dword [sym.imp.ADVAPI32.dll_CryptDestroyHash]
test eax, eax
jne 0x4789e2
lea edx, [esp + 0x14]
push edx
lea ecx, [esp + 0x2c]
mov dword [esp + 0x18], str.CryptDestroyHash_error
call fcn.0048ed7b
push 0x4d4e48
lea eax, [esp + 0x2c]
push eax
call fcn.0048d98f
mov dword [esp + 0x18], edi
mov ebp, dword [sym.imp.ADVAPI32.dll_CryptDecrypt]
lea esp, [esp]
mov eax, dword [esp + 0xb0]
sub eax, edi
cmp eax, 0x3e8
jbe 0x478a12
add edi, 0x3e8
mov dword [esp + 0x1c], 0x3e8
xor esi, esi
jmp 0x478a1d
mov dword [esp + 0x1c], eax
add edi, eax
mov esi, 1
mov edx, dword [esp + 0x20]
lea ecx, [esp + 0x1c]
push ecx
push ebx
push 0
push esi
push 0
push edx
call ebp
test eax, eax
je 0x478a41
test esi, esi
jne 0x478af2
add ebx, dword [esp + 0x1c]
jmp 0x4789f0
call dword [sym.imp.KERNEL32.dll_GetLastError]
mov esi, eax
xor eax, eax
push str.Error_Code:
lea ecx, [esp + 0x44]
mov dword [esp + 0x7c], eax
mov dword [esp + 0x80], eax
mov dword [esp + 0x84], eax
mov dword [esp + 0x88], eax
mov dword [esp + 0x8c], eax
mov dword [esp + 0x90], eax
mov dword [esp + 0x94], eax
mov dword [esp + 0x98], eax
call fcn.00401c70
mov edi, eax
push 0xa
lea eax, [esp + 0x7c]
push eax
push esi
mov dword [esp + 0xb0], 0
call fcn.004b4801
push eax
lea ecx, [esp + 0x6c]
push edi
push ecx
call fcn.00416030
add esp, 0x18
cmp dword [eax + 0x18], 0x10
mov byte [esp + 0xa4], 1
jb 0x478ace
mov edx, dword [eax + 4]
mov dword [esp + 0x24], edx
jmp 0x478ad5
add eax, 4
mov dword [esp + 0x24], eax
lea eax, [esp + 0x24]
push eax
lea ecx, [esp + 0x38]
call fcn.0048ed7b
push 0x4d4e48
lea ecx, [esp + 0x38]
push ecx
call fcn.0048d98f
mov ecx, dword [esp + 0x9c]
mov dword fs:[0], ecx
pop ecx
pop edi
pop esi
pop ebp
pop ebx
mov ecx, dword [esp + 0x84]
xor ecx, esp
call fcn.0048de34
add esp, 0x94
ret 0x10