Function at 0x4c1920
Capabilities:
Encode data using xor

Disassembly:
push ebx
mov ebx, esp
sub esp, 8
and esp, 0xfffffff8
add esp, 4
push ebp
mov ebp, dword [ebx + 4]
mov dword [esp + 4], ebp
mov ebp, esp
push 0xffffffffffffffff
push 0x5fdfc8
mov eax, dword fs:[0]
push eax
push ebx
sub esp, 0x38
push esi
push edi
mov eax, dword [0x65b500]
xor eax, ebp
push eax
lea eax, [ebp - 0xc]
mov dword fs:[0], eax
xor eax, eax
cmp dword [ebx + 0x14], eax
je 0x4c1b16
mov edi, dword [ebx + 8]
test edi, edi
jle 0x4c1b16
mov ecx, dword [ebx + 0xc]
test ecx, ecx
jle 0x4c1b16
mov edx, dword [ebx + 0x10]
test edx, edx
jle 0x4c1b16
lea eax, [ecx*4]
xor ecx, ecx
mov dword [ebp - 0x24], eax
lea esi, [edi*2 + 1]
imul eax, edx
mov edx, 8
mov dword [ebp - 0x3c], eax
mov eax, esi
mul edx
seto cl
neg ecx
or ecx, eax
push ecx
call fcn.004da60d
mov ecx, eax
mov dword [ebp - 0x14], ecx
lea eax, [edi*2 + 8]
mov dword [ebp - 4], 0
push eax
push 0
push ecx
call fcn.005c5370
mov eax, dword [0x6693f8]
add esp, 0x10
test al, 1
jne 0x4c1a00
movsd xmm0, qword [0x61bc60]
or eax, 1
mov dword [0x6693f8], eax
call fcn.005dceb0
movaps xmm1, xmm0
movsd qword [0x6693f0], xmm1
jmp 0x4c1a08
movsd xmm1, qword [0x6693f0]
movd xmm0, edi
mov eax, edi
cvtdq2pd xmm0, xmm0
neg eax
mov dword [ebp - 0x18], eax
mov dword [ebp - 0x40], eax
divsd xmm0, qword [0x6138c0]
mulsd xmm1, xmm0
movaps xmm2, xmm0
addsd xmm2, xmm0
movsd qword [ebp - 0x48], xmm1
mulsd xmm2, xmm0
movsd qword [ebp - 0x38], xmm2
cmp eax, edi
jg 0x4c1a90
mov eax, dword [ebp - 0x14]
mov esi, dword [ebp - 0x40]
mov dword [ebp - 0x20], eax
nop dword [eax + eax]
mov eax, esi
imul eax, esi
movd xmm0, eax
cvtdq2pd xmm0, xmm0
divsd xmm0, xmm2
xorps xmm0, xmmword [0x61bc70]
call fcn.005dcfd0
divsd xmm0, qword [ebp - 0x48]
mov eax, dword [ebp - 0x20]
inc esi
movsd xmm2, qword [ebp - 0x38]
movsd qword [eax], xmm0
add eax, 8
mov dword [ebp - 0x20], eax
cmp esi, edi
jle 0x4c1a50
lea esi, [edi*2 + 1]
xor ecx, ecx
xorps xmm2, xmm2
cmp esi, 4
jl 0x4c1acb
mov eax, dword [ebp - 0x14]
lea edx, [esi - 4]
shr edx, 2
add eax, 0x10
inc edx
lea ecx, [edx*4]
nop
addsd xmm2, qword [eax - 0x10]
addsd xmm2, qword [eax - 8]
addsd xmm2, qword [eax]
addsd xmm2, qword [eax + 8]
add eax, 0x20
sub edx, 1
jne 0x4c1ab0
mov edx, dword [ebp - 0x14]
cmp ecx, esi
jge 0x4c1adc
addsd xmm2, qword [edx + ecx*8]
inc ecx
cmp ecx, esi
jl 0x4c1ad2
movsd xmm0, qword [0x61bc58]
unpcklpd xmm2, xmm2
movaps xmm1, xmm2
movaps xmm3, xmm2
subsd xmm1, qword [0x607c88]
unpcklpd xmm3, xmm3
andps xmm1, xmmword [0x604a40]
comisd xmm0, xmm1
jbe 0x4c1b2a
test edx, edx
je 0x4c1b14
push edx
call fcn.004da3d2
add esp, 4
xor eax, eax
mov ecx, dword [ebp - 0xc]
mov dword fs:[0], ecx
pop ecx
pop edi
pop esi
mov esp, ebp
pop ebp
mov esp, ebx
pop ebx
ret
xor ecx, ecx
test esi, esi
jle 0x4c1bf3
cmp esi, 8
jb 0x4c1b8b
mov eax, esi
and eax, 0x80000007
jns 0x4c1b47
dec eax
or eax, 0xfffffff8
inc eax
mov dword [ebp - 0x1c], esi
sub dword [ebp - 0x1c], eax
lea eax, [edx + 0x20]
movups xmm0, xmmword [eax - 0x20]
add ecx, 8
lea eax, [eax + 0x40]
divpd xmm0, xmm3
movups xmmword [eax - 0x60], xmm0
movups xmm0, xmmword [eax - 0x50]
divpd xmm0, xmm3
movups xmmword [eax - 0x50], xmm0
movups xmm0, xmmword [eax - 0x40]
divpd xmm0, xmm3
movups xmmword [eax - 0x40], xmm0
movups xmm0, xmmword [eax - 0x30]
divpd xmm0, xmm3
movups xmmword [eax - 0x30], xmm0
cmp ecx, dword [ebp - 0x1c]
jl 0x4c1b50
cmp ecx, esi
jge 0x4c1bf3
mov eax, esi
sub eax, ecx
cmp eax, 4
jl 0x4c1bd0
lea eax, [edx + 0x10]
mov edx, esi
sub edx, ecx
lea eax, [eax + ecx*8]
sub edx, 4
shr edx, 2
inc edx
lea ecx, [ecx + edx*4]
nop dword [eax]
lea eax, [eax + 0x20]
movups xmm0, xmmword [eax - 0x30]
divpd xmm0, xmm2
movups xmmword [eax - 0x30], xmm0
movups xmm0, xmmword [eax - 0x20]
divpd xmm0, xmm2
movups xmmword [eax - 0x20], xmm0
sub edx, 1
jne 0x4c1bb0
cmp ecx, esi
jge 0x4c1bf3
mov eax, dword [ebp - 0x14]
nop word [eax + eax]
movsd xmm0, qword [eax + ecx*8]
divsd xmm0, xmm2
movsd qword [eax + ecx*8], xmm0
inc ecx
cmp ecx, esi
jl 0x4c1be0
mov eax, dword [ebp - 0x3c]
lea eax, [eax + eax*2]
shl eax, 3
push eax
mov dword [ebp - 0x40], eax
call fcn.004d0a80
mov esi, eax
add esp, 4
mov dword [ebp - 0x44], esi
test esi, esi
jne 0x4c1c22
mov eax, dword [ebp - 0x14]
test eax, eax
je 0x4c1b14
push eax
jmp 0x4c1b0c
push dword [ebp - 0x40]
push 0
push esi
call fcn.005c5370
mov eax, dword [ebx + 0x10]
add esp, 0xc
xor edx, edx
mov dword [ebp - 0x40], eax
mov eax, dword [ebp - 0x18]
mov dword [ebp - 0x2c], edx
mov dword [ebp - 0x1c], edx
mov edi, dword [ebx + 0xc]
mov ecx, eax
mov dword [ebp - 0x3c], edi
mov edi, dword [ebx + 8]
mov dword [ebp - 0x34], ecx
nop
cmp eax, edi
jg 0x4c1d0d
mov edi, dword [ebp - 0x14]
mov eax, edx
shr eax, 2
mov dword [ebp - 0x20], ecx
lea edx, [eax + eax*2]
mov eax, dword [ebx + 8]
sub eax, dword [ebp - 0x18]
inc eax
mov dword [ebp - 0x28], eax
xor eax, eax
mov esi, dword [ebp - 0x44]
test ecx, ecx
cmovns eax, ecx
mov ecx, dword [ebx + 0xc]
dec ecx
cmp eax, ecx
cmovge eax, ecx
mov ecx, dword [ebp - 0x1c]
lea ecx, [ecx + eax*4]
mov eax, dword [ebx + 0x14]
shr ecx, 2
movzx eax, byte [eax + ecx*4 + 2]
movd xmm0, eax
mov eax, dword [ebx + 0x14]
cvtdq2pd xmm0, xmm0
mulsd xmm0, qword [edi]
addsd xmm0, qword [esi + edx*8]
movsd qword [esi + edx*8], xmm0
mov eax, dword [eax + ecx*4]
shr eax, 8
movzx eax, al
movd xmm0, eax
mov eax, dword [ebx + 0x14]
cvtdq2pd xmm0, xmm0
mulsd xmm0, qword [edi]
addsd xmm0, qword [esi + edx*8 + 8]
movsd qword [esi + edx*8 + 8], xmm0
movzx eax, byte [eax + ecx*4]
mov ecx, dword [ebp - 0x20]
inc ecx
mov dword [ebp - 0x20], ecx
movd xmm0, eax
cvtdq2pd xmm0, xmm0
mulsd xmm0, qword [edi]
add edi, 8
sub dword [ebp - 0x28], 1
addsd xmm0, qword [esi + edx*8 + 0x10]
movsd qword [esi + edx*8 + 0x10], xmm0
jne 0x4c1c70
mov eax, dword [ebp - 0x18]
mov ecx, dword [ebp - 0x34]
mov edx, dword [ebp - 0x2c]
mov edi, dword [ebx + 8]
add edx, 4
inc ecx
sub dword [ebp - 0x3c], 1
mov dword [ebp - 0x2c], edx
mov dword [ebp - 0x34], ecx
jne 0x4c1c50
mov ecx, dword [ebp - 0x24]
add dword [ebp - 0x1c], ecx
sub dword [ebp - 0x40], 1
jne 0x4c1c41
movsd xmm5, qword [0x6138e8]
xor edx, edx
mov dword [ebp - 0x20], 0
mov dword [ebp - 0x1c], edx
xor ecx, ecx
mov dword [ebp - 0x3c], ecx
nop word [eax + eax]
shl ecx, 2
xorps xmm2, xmm2
add edx, ecx
mov dword [ebp - 0x44], ecx
mov dword [ebp - 0x34], edx
xorps xmm3, xmm3
xorps xmm4, xmm4
cmp eax, edi
jg 0x4c1dd7
mov ecx, dword [ebx + 0x10]
mov edx, dword [ebp - 0x20]
dec ecx
mov edi, dword [ebp - 0x14]
add edx, eax
mov dword [ebp - 0x40], ecx
mov ecx, dword [ebx + 8]
sub ecx, eax
inc ecx
nop dword [eax]
movsd xmm1, qword [edi]
xor eax, eax
test edx, edx
cmovns eax, edx
cmp eax, dword [ebp - 0x40]
cmovge eax, dword [ebp - 0x40]
add edi, 8
imul eax, dword [ebp - 0x24]
inc edx
add eax, dword [ebp - 0x44]
shr eax, 2
lea eax, [eax + eax*2]
movsd xmm0, qword [esi + eax*8]
mulsd xmm0, xmm1
addsd xmm2, xmm0
movsd xmm0, qword [esi + eax*8 + 8]
mulsd xmm0, xmm1
addsd xmm3, xmm0
movsd xmm0, qword [esi + eax*8 + 0x10]
mulsd xmm0, xmm1
addsd xmm4, xmm0
sub ecx, 1
jne 0x4c1d80
mov edi, dword [ebx + 8]
mov edx, dword [ebp - 0x34]
movaps xmm0, xmm5
shr edx, 2
minsd xmm0, xmm2
movaps xmm1, xmm5
minsd xmm1, xmm3
movaps xmm2, xmm5
minsd xmm2, xmm4
cvttsd2si eax, xmm0
movzx ecx, al
cvttsd2si eax, xmm1
shl ecx, 8
movzx eax, al
or ecx, eax
cvttsd2si eax, xmm2
shl ecx, 8
movzx eax, al
or ecx, eax
mov eax, dword [ebx + 0x14]
mov dword [eax + edx*4], ecx
mov ecx, dword [ebp - 0x3c]
mov eax, dword [ebp - 0x18]
inc ecx
mov edx, dword [ebp - 0x1c]
mov dword [ebp - 0x3c], ecx
cmp ecx, dword [ebx + 0xc]
jl 0x4c1d50
mov edx, dword [ebp - 0x20]
mov eax, dword [ebp - 0x24]
inc edx
add dword [ebp - 0x1c], eax
cmp edx, dword [ebx + 0x10]
mov eax, dword [ebp - 0x18]
mov dword [ebp - 0x20], edx
mov edx, dword [ebp - 0x1c]
jl 0x4c1d45
mov eax, dword [ebp - 0x14]
mov dword [ebp - 0x44], 1
mov dword [ebp - 4], 0xffffffff
test eax, eax
je 0x4c1e64
push eax
call fcn.004da3d2
add esp, 4
push esi
call fcn.004d0aa0
mov eax, dword [ebp - 0x44]
add esp, 4
mov ecx, dword [ebp - 0xc]
mov dword fs:[0], ecx
pop ecx
pop edi
pop esi
mov esp, ebp
pop ebp
mov esp, ebx
pop ebx
ret