Function at 0x457580
Capabilities:
Encrypt data using rc4 prga

Disassembly:
sub esp, 0xc
push ebp
mov ebp, dword [esp + 0x14]
push esi
push edi
fld dword [ebp + 0xd0]
fcomp dword [esp + 0x24]
fnstsw ax
test ah, 0x41
jnp 0x457886
mov eax, dword [esp + 0x20]
test eax, eax
jge 0x4575c4
mov ecx, dword [0x10b3dd0]
inc eax
shl eax, 5
sub ecx, eax
push ecx
push ebp
call fcn.00457440
add esp, 8
pop edi
pop esi
pop ebp
add esp, 0xc
ret
lea edx, [eax + eax*2]
mov eax, dword [0x10b3dc8]
mov edi, dword [esp + 0x30]
mov esi, dword [esp + 0x2c]
lea edx, [eax + edx*4]
mov dword [esp + 0x1c], edx
mov eax, dword [edx]
mov cl, byte [eax + 0x10]
cmp cl, 3
jae 0x457604
and ecx, 0xff
fld dword [esi + ecx*4]
fsub dword [eax + 0xc]
fld dword [edi + ecx*4]
fsub dword [eax + 0xc]
fstp dword [esp + 0x2c]
fld dword [ebp + ecx*4 + 0x94]
jmp 0x45764e
fld dword [esi + 4]
fmul dword [eax + 4]
fld dword [esi + 8]
fmul dword [eax + 8]
faddp st(1)
fld dword [esi]
fmul dword [eax]
faddp st(1)
fsub dword [eax + 0xc]
fld dword [edi + 4]
fmul dword [eax + 4]
fld dword [edi + 8]
fmul dword [eax + 8]
faddp st(1)
fld dword [edi]
fmul dword [eax]
faddp st(1)
fsub dword [eax + 0xc]
mov eax, dword [ebp + 0xc4]
test eax, eax
fstp dword [esp + 0x2c]
je 0x457648
fld dword [0x54e4d0]
jmp 0x45764e
fld dword [0x54ee08]
fld dword [0x54e504]
fadd st(1)
fld st(2)
fcomp st(1)
fnstsw ax
and eax, 0x100
jne 0x457696
fld dword [esp + 0x2c]
fcompp
fnstsw ax
and eax, 0x100
jne 0x457698
mov ecx, dword [esp + 0x28]
mov eax, dword [esp + 0x24]
push edi
push esi
push ecx
mov ecx, dword [edx + 4]
push eax
push ecx
fstp st(0)
push ebp
fstp st(0)
call fcn.00457580
add esp, 0x18
pop edi
pop esi
pop ebp
add esp, 0xc
ret
fstp st(0)
fld st(0)
fchs
fsub dword [0x54e504]
fld st(2)
fcomp st(1)
fnstsw ax
test ah, 5
jp 0x4576de
fld dword [esp + 0x2c]
fcompp
fnstsw ax
test ah, 5
jp 0x4576e0
mov eax, dword [esp + 0x28]
mov ecx, dword [esp + 0x24]
mov edx, dword [edx + 8]
push edi
push esi
push eax
push ecx
push edx
fstp st(0)
push ebp
fstp st(0)
call fcn.00457580
add esp, 0x18
pop edi
pop esi
pop ebp
add esp, 0xc
ret
fstp st(0)
fld st(1)
fcomp dword [esp + 0x2c]
push ebx
fld st(1)
fnstsw ax
test ah, 5
jp 0x457736
fsub dword [esp + 0x30]
mov ebx, 1
fdivr qword [0x54e488]
fld st(1)
fadd st(3)
fadd qword [0x54ed98]
fld st(1)
fmulp st(1)
fstp dword [esp + 0x30]
fxch st(2)
fsub st(1)
fadd qword [0x54ed98]
fmulp st(2)
fstp st(0)
fcom dword [0x54e4d0]
fnstsw ax
test ah, 5
jp 0x45777f
fstp st(0)
fld dword [0x54e4d0]
jmp 0x457796
fcomp dword [esp + 0x30]
xor ebx, ebx
fnstsw ax
and eax, 0x4100
jne 0x457773
fld st(1)
fsub dword [esp + 0x30]
fdivr qword [0x54e488]
fld st(2)
fsub st(2)
fsub qword [0x54ed98]
fld st(1)
fmulp st(1)
fstp dword [esp + 0x30]
fxch st(1)
faddp st(2)
fxch st(1)
fadd qword [0x54ed98]
fmulp st(1)
jmp 0x45771f
fstp st(0)
mov dword [esp + 0x30], 0
jmp 0x45778e
fcom dword [0x54e504]
fnstsw ax
and eax, 0x4100
jne 0x457796
fstp st(0)
fld dword [0x54e504]
fld dword [edi]
fsub dword [esi]
mov edx, dword [esp + 0x20]
lea eax, [esp + 0x10]
push eax
push esi
fmul st(1)
push ecx
mov ecx, dword [esp + 0x34]
fadd dword [esi]
fstp dword [esp + 0x1c]
fld dword [edi + 4]
fsub dword [esi + 4]
fmul st(1)
fadd dword [esi + 4]
fstp dword [esp + 0x20]
fld dword [edi + 8]
fsub dword [esi + 8]
fmul st(1)
fadd dword [esi + 8]
fstp dword [esp + 0x24]
fld dword [esp + 0x38]
fsub dword [esp + 0x34]
mov eax, dword [edx + ebx*4 + 4]
fstp dword [esp + 0x40]
fld dword [esp + 0x40]
fmul st(1)
fadd dword [esp + 0x34]
fstp dword [esp]
push ecx
push eax
push ebp
fstp st(0)
call fcn.00457580
fld dword [esp + 0x48]
fcom dword [0x54e4d0]
add esp, 0x18
fnstsw ax
test ah, 5
jp 0x457814
fstp st(0)
fld dword [0x54e4d0]
jmp 0x45782b
fcom dword [0x54e504]
fnstsw ax
and eax, 0x4100
jne 0x45782b
fstp st(0)
fld dword [0x54e504]
fld dword [edi]
fsub dword [esi]
mov edx, dword [esp + 0x2c]
mov eax, dword [esp + 0x20]
lea ecx, [esp + 0x10]
push edi
fmul st(1)
push ecx
push edx
xor ebx, 1
push ecx
fadd dword [esi]
fstp dword [esp + 0x20]
fld dword [edi + 4]
fsub dword [esi + 4]
fmul st(1)
fadd dword [esi + 4]
fstp dword [esp + 0x24]
fld dword [edi + 8]
fsub dword [esi + 8]
fmul st(1)
fadd dword [esi + 8]
fstp dword [esp + 0x28]
fld dword [esp + 0x44]
fmul st(1)
mov ecx, dword [eax + ebx*4 + 4]
fadd dword [esp + 0x38]
fstp dword [esp]
push ecx
push ebp
fstp st(0)
call fcn.00457580
add esp, 0x18
pop ebx
pop edi
pop esi
pop ebp
add esp, 0xc
ret