Function at 0x40a900
Capabilities:
Create new key via cryptacquirecontext
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 ebp
mov ebp, esp
push 0xffffffffffffffff
push 0x496cad
mov eax, dword fs:[0]
push eax
sub esp, 0x18
push ebx
push esi
push edi
mov eax, dword [0x4da064]
xor eax, ebp
push eax
lea eax, [ebp - 0xc]
mov dword fs:[0], eax
mov ebx, edx
mov edi, ecx
mov esi, dword [ebp + 8]
mov eax, dword [esi + 4]
test eax, eax
je 0x40abac
cmp eax, 0xc800
jg 0x40abac
push 0
push 1
push 0
push dword [ebx]
lea eax, [ebp + 8]
push eax
call dword [sym.imp.ADVAPI32.dll_CryptAcquireContextW]
test eax, eax
jne 0x40a988
push 8
push 1
push eax
push dword [ebx]
lea eax, [ebp + 8]
push eax
call dword [sym.imp.ADVAPI32.dll_CryptAcquireContextW]
test eax, eax
jne 0x40a988
call dword [sym.imp.KERNEL32.dll_GetLastError]
mov ecx, dword [ebp - 0xc]
mov dword fs:[0], ecx
pop ecx
pop edi
pop esi
pop ebx
mov esp, ebp
pop ebp
ret
lea eax, [ebp - 0x10]
push eax
push 0
push 0
push 0x8003
push dword [ebp + 8]
call dword [sym.imp.ADVAPI32.dll_CryptCreateHash]
test eax, eax
jne 0x40a9ce
call dword [sym.imp.KERNEL32.dll_GetLastError]
mov ecx, dword [ebp + 8]
mov esi, eax
test ecx, ecx
je 0x40a9ba
push 0
push ecx
call dword [sym.imp.ADVAPI32.dll_CryptReleaseContext]
mov eax, esi
mov ecx, dword [ebp - 0xc]
mov dword fs:[0], ecx
pop ecx
pop edi
pop esi
pop ebx
mov esp, ebp
pop ebp
ret
mov eax, dword [edi + 4]
test eax, eax
jle 0x40abc3
push 0
push eax
push dword [edi]
push dword [ebp - 0x10]
call dword [sym.imp.ADVAPI32.dll_CryptHashData]
test eax, eax
jne 0x40aa25
call dword [sym.imp.KERNEL32.dll_GetLastError]
mov ecx, dword [ebp - 0x10]
mov esi, eax
test ecx, ecx
je 0x40aa01
push ecx
call dword [sym.imp.ADVAPI32.dll_CryptDestroyHash]
mov ecx, dword [ebp + 8]
test ecx, ecx
je 0x40a9ba
push 0
push ecx
call dword [sym.imp.ADVAPI32.dll_CryptReleaseContext]
mov eax, esi
mov ecx, dword [ebp - 0xc]
mov dword fs:[0], ecx
pop ecx
pop edi
pop esi
pop ebx
mov esp, ebp
pop ebp
ret
lea eax, [ebp - 0x18]
push eax
push 0
push dword [ebp - 0x10]
push 0x6801
push dword [ebp + 8]
call dword [sym.imp.ADVAPI32.dll_CryptDeriveKey]
test eax, eax
jne 0x40aa7e
call dword [sym.imp.KERNEL32.dll_GetLastError]
mov ecx, dword [ebp - 0x10]
mov esi, eax
test ecx, ecx
je 0x40aa56
push ecx
call dword [sym.imp.ADVAPI32.dll_CryptDestroyHash]
mov ecx, dword [ebp + 8]
test ecx, ecx
je 0x40a9ba
push 0
push ecx
call dword [sym.imp.ADVAPI32.dll_CryptReleaseContext]
mov eax, esi
mov ecx, dword [ebp - 0xc]
mov dword fs:[0], ecx
pop ecx
pop edi
pop esi
pop ebx
mov esp, ebp
pop ebp
ret
mov eax, dword [ebp - 0x10]
test eax, eax
je 0x40aa8c
push eax
call dword [sym.imp.ADVAPI32.dll_CryptDestroyHash]
push 0xc800
call fcn.0047662f
mov ebx, eax
add esp, 4
mov dword [ebp - 0x24], ebx
mov dword [ebp - 4], 0
lea eax, [ebp - 0x1c]
mov ecx, dword [esi + 4]
lea edx, [ebp - 0x20]
cmp ecx, 0xc800
mov dword [ebp - 0x1c], 0xc800
mov dword [ebp - 0x20], ecx
cmovle eax, edx
test ecx, ecx
jle 0x40abc3
push dword [eax]
push dword [esi]
push ebx
call fcn.004785d0
mov eax, dword [esi + 4]
add esp, 0xc
mov dword [ebp - 0x14], eax
lea eax, [ebp - 0x14]
push 0xc800
push eax
push ebx
push 0
push 1
push 0
push dword [ebp - 0x18]
call dword [sym.imp.ADVAPI32.dll_CryptEncrypt]
test eax, eax
jne 0x40ab21
call dword [sym.imp.KERNEL32.dll_GetLastError]
mov esi, eax
mov eax, dword [ebp - 0x18]
test eax, eax
je 0x40ab0f
push eax
call dword [sym.imp.ADVAPI32.dll_CryptDestroyKey]
mov eax, dword [ebp + 8]
test eax, eax
je 0x40ab81
push 0
push eax
call dword [sym.imp.ADVAPI32.dll_CryptReleaseContext]
jmp 0x40ab81
mov edi, dword [ebp + 0xc]
mov eax, dword [edi]
test eax, eax
je 0x40ab39
push eax
call fcn.0047e45f
add esp, 4
mov dword [edi], 0
xor esi, esi
mov dword [edi + 4], 0
mov dword [edi + 8], 0
cmp dword [ebp - 0x14], esi
jbe 0x40ab61
nop
lea eax, [esi + ebx]
mov ecx, edi
push eax
call fcn.0040b680
inc esi
cmp esi, dword [ebp - 0x14]
jb 0x40ab50
mov eax, dword [ebp - 0x18]
test eax, eax
je 0x40ab6f
push eax
call dword [sym.imp.ADVAPI32.dll_CryptDestroyKey]
mov eax, dword [ebp + 8]
test eax, eax
je 0x40ab7f
push 0
push eax
call dword [sym.imp.ADVAPI32.dll_CryptReleaseContext]
xor esi, esi
mov dword [ebp - 4], 0xffffffff
push ebx
call fcn.0047662a
add esp, 4
mov dword [ebp - 0x24], 0
mov eax, esi
mov ecx, dword [ebp - 0xc]
mov dword fs:[0], ecx
pop ecx
pop edi
pop esi
pop ebx
mov esp, ebp
pop ebp
ret
mov eax, 0xd
mov ecx, dword [ebp - 0xc]
mov dword fs:[0], ecx
pop ecx
pop edi
pop esi
pop ebx
mov esp, ebp
pop ebp
ret
push 1
push 0xc000008c
call fcn.00408180
int3