Function at 0x579850
Capabilities:
Encode data using xor

Disassembly:
mov eax, 0x34
call fcn.00454db0
mov eax, dword [0x66c65c]
push ebx
push ebp
push esi
test eax, eax
push edi
je 0x579919
push 0xdc
push 0x5fda58
push 0x13
push 5
call fcn.00572350
call fcn.00572320
mov ebp, dword [0x66c660]
xor ecx, ecx
cmp ebp, eax
push 0xde
sete cl
push 0x5fda58
mov esi, ecx
push 0x13
push 6
mov dword [esp + 0x30], esi
call fcn.00572350
add esp, 0x20
test esi, esi
jne 0x5798c6
push 0xe3
push 0x5fda58
push 0x12
push 9
call fcn.00572350
add esp, 0x10
mov eax, dword [0x66c644]
mov edx, dword [0x66c648]
mov ebx, dword [0x66c64c]
mov ecx, 5
mov esi, 0x66c62c
lea edi, [esp + 0x30]
rep movsd dword es:[edi], dword [esi]
mov esi, dword [esp + 0x4c]
mov ebp, eax
add eax, esi
mov dword [esp + 0x18], edx
cmp eax, 0x3ff
mov dword [esp + 0x1c], ebx
mov dword [0x66c644], eax
jl 0x579923
cdq
mov ecx, 0x3ff
idiv ecx
mov dword [0x66c640], ecx
mov dword [0x66c644], edx
jmp 0x57993a
mov dword [esp + 0x10], 0
jmp 0x5798b0
mov ecx, dword [0x66c640]
cmp ecx, 0x3ff
jge 0x57993a
cmp eax, ecx
jle 0x57993a
mov dword [0x66c640], eax
mov eax, esi
mov ecx, 0x14
cdq
idiv ecx
xor ecx, ecx
mov eax, 0x66666667
mov edi, dword [esp + 0x10]
test edx, edx
setg cl
imul esi
sar edx, 3
mov eax, edx
shr eax, 0x1f
add edx, eax
add edx, ebx
add edx, ecx
test edi, edi
mov dword [0x66c64c], edx
jne 0x579984
push 0x103
push 0x5fda58
push 0x12
push 0xa
call fcn.00572350
add esp, 0x10
lea ecx, [esp + 0x20]
push ecx
call fcn.00574fd0
add esp, 4
test esi, esi
jle 0x579ab9
mov ecx, esi
add esi, 0x13
mov eax, 0xcccccccd
mov ebx, dword [esp + 0x48]
mul esi
shr edx, 4
mov dword [esp + 0x4c], ecx
mov dword [esp + 0x14], edx
jmp 0x5799ba
mov ecx, dword [esp + 0x4c]
cmp ecx, 0x14
mov esi, ecx
jle 0x5799c6
mov esi, 0x14
push 0
call fcn.005757b0
lea edx, [esp + 0x24]
push eax
push edx
call fcn.00575050
lea eax, [esp + 0x3c]
push 0x14
lea ecx, [esp + 0x30]
push eax
push ecx
call fcn.005751c0
lea edi, [esi + ebp - 0x3ff]
add esp, 0x18
test edi, edi
jle 0x579a22
mov edx, esi
lea eax, [ebp + 0x66c218]
sub edx, edi
lea ecx, [esp + 0x20]
push edx
push eax
push ecx
call fcn.005751c0
push edi
lea edx, [esp + 0x30]
push 0x66c218
push edx
call fcn.005751c0
add esp, 0x18
jmp 0x579a37
lea eax, [ebp + 0x66c218]
push esi
lea ecx, [esp + 0x24]
push eax
push ecx
call fcn.005751c0
add esp, 0xc
push esi
lea edx, [esp + 0x24]
push ebx
push edx
call fcn.005751c0
lea eax, [esp + 0x24]
push 8
lea ecx, [esp + 0x30]
push eax
push ecx
call fcn.005751c0
lea edx, [esp + 0x48]
push 0
lea eax, [esp + 0x3c]
push edx
push eax
call fcn.005752c0
mov edi, dword [esp + 0x40]
add esp, 0x24
inc edi
add ebx, esi
xor eax, eax
mov dword [esp + 0x1c], edi
test esi, esi
jle 0x579a9b
mov cl, byte [esp + eax + 0x30]
mov dl, byte [ebp + 0x66c218]
xor dl, cl
mov byte [ebp + 0x66c218], dl
inc ebp
cmp ebp, 0x3ff
jl 0x579a96
xor ebp, ebp
inc eax
cmp eax, esi
jl 0x579a79
mov ecx, dword [esp + 0x4c]
mov eax, dword [esp + 0x14]
sub ecx, 0x14
dec eax
mov dword [esp + 0x4c], ecx
mov dword [esp + 0x14], eax
jne 0x5799b6
mov edi, dword [esp + 0x10]
lea edx, [esp + 0x20]
push edx
call fcn.005756e0
add esp, 4
test edi, edi
jne 0x579ae0
push 0x12e
push 0x5fda58
push 0x12
push 9
call fcn.00572350
add esp, 0x10
xor eax, eax
mov cl, byte [esp + eax + 0x30]
mov bl, byte [eax + 0x66c62c]
xor bl, cl
mov byte [eax + 0x66c62c], bl
inc eax
cmp eax, 0x14
jl 0x579ae2
fld qword [0x66c650]
fcomp qword [0x5fda50]
fnstsw ax
test ah, 1
je 0x579b1d
fld qword [0x66c650]
fadd qword [esp + 0x50]
fstp qword [0x66c650]
test edi, edi
pop edi
pop esi
pop ebp
pop ebx
jne 0x579b3b
push 0x139
push 0x5fda58
push 0x12
push 0xa
call fcn.00572350
add esp, 0x10
add esp, 0x34
ret