Function at 0x40c820
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 0x4c98ad
mov eax, dword fs:[0]
push eax
sub esp, 0x1c
push ebx
push esi
push edi
mov eax, dword [0x514080]
xor eax, ebp
push eax
lea eax, [ebp - 0xc]
mov dword fs:[0], eax
mov ebx, edx
mov esi, ecx
mov edi, dword [ebp + 8]
mov eax, dword [edi + 4]
test eax, eax
je 0x40cac2
cmp eax, 0xc800
jg 0x40cac2
push 0
push 1
push 0
push dword [ebx]
lea eax, [ebp - 0x10]
push eax
call dword [sym.imp.ADVAPI32.dll_CryptAcquireContextW]
test eax, eax
jne 0x40c8a8
push 8
push 1
push eax
push dword [ebx]
lea eax, [ebp - 0x10]
push eax
call dword [sym.imp.ADVAPI32.dll_CryptAcquireContextW]
test eax, eax
jne 0x40c8a8
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 - 0x14]
push eax
push 0
push 0
push 0x8003
push dword [ebp - 0x10]
call dword [sym.imp.ADVAPI32.dll_CryptCreateHash]
test eax, eax
jne 0x40c8ee
call dword [sym.imp.KERNEL32.dll_GetLastError]
mov ecx, dword [ebp - 0x10]
mov esi, eax
test ecx, ecx
je 0x40c8da
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 [esi + 4]
test eax, eax
jle 0x40cad9
push 0
push eax
push dword [esi]
push dword [ebp - 0x14]
call dword [sym.imp.ADVAPI32.dll_CryptHashData]
test eax, eax
jne 0x40c945
call dword [sym.imp.KERNEL32.dll_GetLastError]
mov ecx, dword [ebp - 0x14]
mov esi, eax
test ecx, ecx
je 0x40c921
push ecx
call dword [sym.imp.ADVAPI32.dll_CryptDestroyHash]
mov ecx, dword [ebp - 0x10]
test ecx, ecx
je 0x40c8da
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 - 0x14]
push 0x6801
push dword [ebp - 0x10]
call dword [sym.imp.ADVAPI32.dll_CryptDeriveKey]
test eax, eax
jne 0x40c99e
call dword [sym.imp.KERNEL32.dll_GetLastError]
mov ecx, dword [ebp - 0x14]
mov esi, eax
test ecx, ecx
je 0x40c976
push ecx
call dword [sym.imp.ADVAPI32.dll_CryptDestroyHash]
mov ecx, dword [ebp - 0x10]
test ecx, ecx
je 0x40c8da
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 - 0x14]
test eax, eax
je 0x40c9ac
push eax
call dword [sym.imp.ADVAPI32.dll_CryptDestroyHash]
mov eax, dword [edi + 4]
mov dword [ebp - 0x28], 0
mov dword [ebp - 0x24], 0
mov dword [ebp - 0x20], 0
test eax, eax
je 0x40ca0b
push 1
push eax
call fcn.004aab34
add esp, 8
mov dword [ebp - 0x28], eax
test eax, eax
je 0x40ca0b
mov eax, dword [edi + 4]
xor esi, esi
mov dword [ebp - 0x20], eax
test eax, eax
jle 0x40ca0b
test esi, esi
js 0x40cad9
cmp esi, eax
jge 0x40cad9
mov eax, dword [edi]
lea ecx, [ebp - 0x28]
add eax, esi
push eax
call fcn.0040d360
mov eax, dword [edi + 4]
inc esi
cmp esi, eax
jl 0x40c9e6
mov dword [ebp - 4], 0
cmp dword [ebp - 0x24], 0
mov eax, dword [edi + 4]
mov dword [ebp - 0x1c], eax
jle 0x40cad9
lea eax, [ebp - 0x1c]
push eax
push dword [ebp - 0x28]
push 0
push 1
push 0
push dword [ebp - 0x18]
call dword [sym.imp.ADVAPI32.dll_CryptDecrypt]
test eax, eax
jne 0x40ca64
call dword [sym.imp.KERNEL32.dll_GetLastError]
mov esi, eax
mov eax, dword [ebp - 0x18]
test eax, eax
je 0x40ca52
push eax
call dword [sym.imp.ADVAPI32.dll_CryptDestroyKey]
mov eax, dword [ebp - 0x10]
test eax, eax
je 0x40ca82
push 0
push eax
call dword [sym.imp.ADVAPI32.dll_CryptReleaseContext]
jmp 0x40ca82
mov ecx, dword [ebp + 0xc]
lea eax, [ebp - 0x28]
push eax
call fcn.0040d440
mov eax, dword [ebp - 0x10]
test eax, eax
je 0x40ca80
push 0
push eax
call dword [sym.imp.ADVAPI32.dll_CryptReleaseContext]
xor esi, esi
mov dword [ebp - 4], 0xffffffff
mov ecx, dword [ebp - 0x28]
test ecx, ecx
je 0x40caa0
push ecx
call fcn.004aaaa1
add esp, 4
mov dword [ebp - 0x28], 0
mov dword [ebp - 0x24], 0
mov eax, esi
mov dword [ebp - 0x20], 0
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 0x8000000b
call fcn.00402740
int3