Function at 0x4aa660
Capabilities:
Encode data using xor

Disassembly:
mov eax, 0x3c
call fcn.005890a0
mov eax, dword [0x632e20]
xor eax, esp
mov dword [esp + 0x38], eax
cmp dword [0x638d54], 0
mov eax, dword [esp + 0x40]
push ebx
mov dword [esp + 0xc], eax
je 0x4aa770
push 0xd8
push 0x5de318
push 0x13
push 5
call fcn.004ab6d0
call fcn.004ab480
xor ebx, ebx
cmp dword [0x638d58], eax
push 0xda
sete bl
push 0x5de318
push 0x13
push 6
mov dword [esp + 0x24], ebx
call fcn.004ab6d0
add esp, 0x20
test ebx, ebx
jne 0x4aa6e2
push 0xdf
push 0x5de318
push 0x12
push 9
call fcn.004ab6d0
add esp, 0x10
mov edx, dword [0x638d40]
mov eax, dword [0x638d44]
mov ecx, dword [0x638d3c]
mov dword [esp + 0x10], edx
mov edx, dword [0x638d24]
push esi
mov esi, dword [esp + 0x4c]
mov dword [esp + 0x18], eax
mov eax, dword [0x638d28]
mov dword [esp + 0x2c], edx
mov edx, dword [0x638d2c]
push edi
mov edi, ecx
add ecx, esi
cmp ecx, 0x3ff
mov dword [esp + 0x34], eax
mov eax, dword [0x638d30]
mov dword [esp + 0x38], edx
mov edx, dword [0x638d34]
mov dword [esp + 0x3c], eax
mov dword [esp + 0x40], edx
mov dword [0x638d3c], ecx
jl 0x4aa781
mov eax, 0x7fdff7fd
imul ecx
sub edx, ecx
sar edx, 9
mov eax, edx
shr eax, 0x1f
add eax, edx
imul eax, eax, 0x3ff
add ecx, eax
mov dword [0x638d3c], ecx
mov dword [0x638d38], 0x3ff
jmp 0x4aa797
mov dword [esp + 4], 0
mov ebx, dword [esp + 4]
jmp 0x4aa6cc
mov eax, dword [0x638d38]
cmp eax, 0x3ff
jge 0x4aa797
cmp ecx, eax
jle 0x4aa797
mov dword [0x638d38], ecx
mov eax, 0x66666667
imul esi
sar edx, 3
mov eax, edx
shr eax, 0x1f
add eax, edx
lea ecx, [eax + eax*4]
add ecx, ecx
add ecx, ecx
mov edx, esi
sub edx, ecx
xor ecx, ecx
test edx, edx
setg cl
add ecx, eax
add dword [0x638d44], ecx
test ebx, ebx
jne 0x4aa7dc
push 0xff
push 0x5de318
push 0x12
push 0xa
call fcn.004ab6d0
add esp, 0x10
lea edx, [esp + 0x20]
push edx
call fcn.004b1240
add esp, 4
test esi, esi
jle 0x4aa8ef
push ebp
mov ebp, esi
dec esi
mov eax, 0xcccccccd
mul esi
shr edx, 4
inc edx
mov dword [esp + 0x14], edx
cmp ebp, 0x14
mov esi, ebp
jle 0x4aa810
mov esi, 0x14
push 0
call fcn.004b8950
push eax
lea eax, [esp + 0x2c]
push eax
call fcn.004b1260
push 0x14
lea ecx, [esp + 0x44]
push ecx
lea edx, [esp + 0x38]
push edx
call fcn.004b1380
lea ebx, [esi + edi - 0x3ff]
add esp, 0x18
lea ecx, [edi + 0x638910]
lea edx, [esp + 0x24]
test ebx, ebx
jle 0x4aa86c
mov eax, esi
sub eax, ebx
push eax
push ecx
push edx
call fcn.004b1380
push ebx
lea eax, [esp + 0x34]
push 0x638910
push eax
call fcn.004b1380
add esp, 0x18
jmp 0x4aa877
push esi
push ecx
push edx
call fcn.004b1380
add esp, 0xc
mov ebx, dword [esp + 0x18]
push esi
lea eax, [esp + 0x28]
push ebx
push eax
call fcn.004b1380
push 8
lea ecx, [esp + 0x2c]
push ecx
lea edx, [esp + 0x38]
push edx
call fcn.004b1380
push 0
lea eax, [esp + 0x50]
push eax
lea ecx, [esp + 0x44]
push ecx
call fcn.004b1390
mov ecx, 1
add dword [esp + 0x44], ecx
add ebx, esi
add esp, 0x24
xor eax, eax
mov dword [esp + 0x18], ebx
test esi, esi
jle 0x4aa8dd
mov dl, byte [esp + eax + 0x34]
xor byte [edi + 0x638910], dl
add edi, ecx
cmp edi, 0x3ff
jl 0x4aa8d7
xor edi, edi
add eax, ecx
cmp eax, esi
jl 0x4aa8c1
sub ebp, 0x14
sub dword [esp + 0x14], ecx
jne 0x4aa804
mov ebx, dword [esp + 0x10]
pop ebp
lea eax, [esp + 0x20]
push eax
call fcn.004b1410
add esp, 4
pop edi
pop esi
test ebx, ebx
jne 0x4aa918
push 0x12a
push 0x5de318
push 0x12
push 9
call fcn.004ab6d0
add esp, 0x10
xor eax, eax
lea ebx, [ebx]
movzx ecx, byte [esp + eax + 0x28]
xor byte [eax + 0x638d24], cl
movzx edx, byte [esp + eax + 0x29]
movzx ecx, byte [esp + eax + 0x2a]
xor byte [eax + 0x638d25], dl
xor byte [eax + 0x638d26], cl
movzx edx, byte [esp + eax + 0x2b]
movzx ecx, byte [esp + eax + 0x2c]
xor byte [eax + 0x638d27], dl
xor byte [eax + 0x638d28], cl
add eax, 5
cmp eax, 0x14
jl 0x4aa920
fld qword [0x5de310]
fld qword [0x638d48]
fcom st(1)
fnstsw ax
fstp st(1)
test ah, 5
jp 0x4aa982
fadd qword [esp + 0x4c]
fstp qword [0x638d48]
jmp 0x4aa984
fstp st(0)
test ebx, ebx
pop ebx
jne 0x4aa99f
push 0x135
push 0x5de318
push 0x12
push 0xa
call fcn.004ab6d0
add esp, 0x10
mov ecx, dword [esp + 0x38]
xor ecx, esp
call fcn.0058841d
add esp, 0x3c
ret