Function at 0x6684a0
Capabilities:
Encode data using xor

Disassembly:
mov eax, 0x3c
call fcn.0054f130
mov eax, dword [0x820ac4]
xor eax, esp
mov dword [esp + 0x38], eax
cmp dword [0x873464], 0
mov eax, dword [esp + 0x40]
push ebx
mov dword [esp + 0xc], eax
je 0x6685b0
push 0xdc
push 0x7892e0
push 0x13
push 5
call fcn.00661c40
call fcn.00661c20
xor ebx, ebx
cmp dword [0x873468], eax
push 0xde
sete bl
push 0x7892e0
push 0x13
push 6
mov dword [esp + 0x24], ebx
call fcn.00661c40
add esp, 0x20
test ebx, ebx
jne 0x668522
push 0xe3
push 0x7892e0
push 0x12
push 9
call fcn.00661c40
add esp, 0x10
mov edx, dword [0x873450]
mov eax, dword [0x873454]
mov ecx, dword [0x87344c]
mov dword [esp + 0x10], edx
mov edx, dword [0x873434]
push esi
mov esi, dword [esp + 0x4c]
mov dword [esp + 0x18], eax
mov eax, dword [0x873438]
mov dword [esp + 0x2c], edx
mov edx, dword [0x87343c]
push edi
mov edi, ecx
add ecx, esi
cmp ecx, 0x3ff
mov dword [esp + 0x34], eax
mov eax, dword [0x873440]
mov dword [esp + 0x38], edx
mov edx, dword [0x873444]
mov dword [esp + 0x3c], eax
mov dword [esp + 0x40], edx
mov dword [0x87344c], ecx
jl 0x6685c1
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 [0x87344c], ecx
mov dword [0x873448], 0x3ff
jmp 0x6685d7
mov dword [esp + 4], 0
mov ebx, dword [esp + 4]
jmp 0x66850c
mov eax, dword [0x873448]
cmp eax, 0x3ff
jge 0x6685d7
cmp ecx, eax
jle 0x6685d7
mov dword [0x873448], 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 [0x873454], ecx
test ebx, ebx
jne 0x66861c
push 0x103
push 0x7892e0
push 0x12
push 0xa
call fcn.00661c40
add esp, 0x10
lea edx, [esp + 0x20]
push edx
call fcn.0066b440
add esp, 4
test esi, esi
jle 0x66873e
push ebp
mov ebp, esi
add esi, 0xffffffff
mov eax, 0xcccccccd
mul esi
shr edx, 4
add edx, 1
mov dword [esp + 0x14], edx
cmp ebp, 0x14
mov esi, ebp
jle 0x668654
mov esi, 0x14
push 0
call fcn.0066b870
push eax
lea eax, [esp + 0x2c]
push eax
call fcn.0066b520
push 0x14
lea ecx, [esp + 0x44]
push ecx
lea edx, [esp + 0x38]
push edx
call fcn.0066b5b0
lea ebx, [esi + edi - 0x3ff]
add esp, 0x18
test ebx, ebx
lea ecx, [edi + 0x873020]
lea edx, [esp + 0x24]
jle 0x6686b0
mov eax, esi
sub eax, ebx
push eax
push ecx
push edx
call fcn.0066b5b0
push ebx
lea eax, [esp + 0x34]
push 0x873020
push eax
call fcn.0066b5b0
add esp, 0x18
jmp 0x6686bb
push esi
push ecx
push edx
call fcn.0066b5b0
add esp, 0xc
mov ebx, dword [esp + 0x18]
push esi
lea eax, [esp + 0x28]
push ebx
push eax
call fcn.0066b5b0
push 8
lea ecx, [esp + 0x2c]
push ecx
lea edx, [esp + 0x38]
push edx
call fcn.0066b5b0
push 0
lea eax, [esp + 0x50]
push eax
lea ecx, [esp + 0x44]
push ecx
call fcn.0066b5c0
mov ecx, 1
add dword [esp + 0x44], ecx
add ebx, esi
add esp, 0x24
xor eax, eax
test esi, esi
mov dword [esp + 0x18], ebx
jle 0x66872c
jmp 0x668710
mov dl, byte [esp + eax + 0x34]
xor byte [edi + 0x873020], dl
add edi, ecx
cmp edi, 0x3ff
jl 0x668726
xor edi, edi
add eax, ecx
cmp eax, esi
jl 0x668710
sub ebp, 0x14
sub dword [esp + 0x14], ecx
jne 0x668648
mov ebx, dword [esp + 0x10]
pop ebp
lea eax, [esp + 0x20]
push eax
call fcn.0066b640
add esp, 4
test ebx, ebx
pop edi
pop esi
jne 0x668767
push 0x12e
push 0x7892e0
push 0x12
push 9
call fcn.00661c40
add esp, 0x10
xor eax, eax
lea esp, [esp]
movzx ecx, byte [esp + eax + 0x28]
xor byte [eax + 0x873434], cl
movzx edx, byte [esp + eax + 0x29]
movzx ecx, byte [esp + eax + 0x2a]
xor byte [eax + 0x873435], dl
xor byte [eax + 0x873436], cl
movzx edx, byte [esp + eax + 0x2b]
movzx ecx, byte [esp + eax + 0x2c]
xor byte [eax + 0x873437], dl
xor byte [eax + 0x873438], cl
add eax, 5
cmp eax, 0x14
jl 0x668770
fld qword [0x7892d8]
fld qword [0x873458]
fcom st(1)
fnstsw ax
fstp st(1)
test ah, 5
jp 0x6687d2
fadd qword [esp + 0x4c]
fstp qword [0x873458]
jmp 0x6687d4
fstp st(0)
test ebx, ebx
pop ebx
jne 0x6687ef
push 0x139
push 0x7892e0
push 0x12
push 0xa
call fcn.00661c40
add esp, 0x10
mov ecx, dword [esp + 0x38]
xor ecx, esp
call fcn.0054ae61
add esp, 0x3c
ret