Function at 0x100efa10
Capabilities:
Encode data using xor

Disassembly:
mov eax, 0x38
call fcn.1011d4b0
push ebx
mov ebx, dword [esp + 0x4c]
push edi
push ebx
mov dword [esp + 0x38], 0
call fcn.1009a4a0
push ebx
call fcn.1009a530
mov edi, eax
add esp, 8
mov dword [esp + 0x18], edi
test edi, edi
je 0x100efd71
push ebx
call fcn.1009a530
add esp, 4
mov dword [esp + 0x1c], eax
test eax, eax
je 0x100efd71
push esi
push ebx
call fcn.1009a530
mov esi, eax
add esp, 4
mov dword [esp + 0x34], esi
test esi, esi
je 0x100efd70
push ebx
call fcn.1009a530
add esp, 4
mov dword [esp + 0x10], eax
test eax, eax
je 0x100efd70
mov eax, dword [esp + 0x4c]
push ebp
mov ebp, dword [esp + 0x54]
push ebp
push eax
push esi
call fcn.100ef650
add esp, 0xc
test eax, eax
je 0x100efd6f
cmp dword [esi + 4], 0
je 0x100efd6f
mov ecx, dword [esp + 0x14]
push ebp
push ecx
call fcn.1005ffc0
add esp, 8
test eax, eax
je 0x100efd6f
push esi
call fcn.1005fd50
mov edx, dword [esp + 0x18]
push edx
mov dword [esp + 0x18], eax
call fcn.1005fd50
mov ebx, dword [ebp + 4]
add esp, 8
mov dword [esp + 0x34], eax
mov dword [esp + 0x1c], ebx
cmp ebx, dword [esi + 8]
jle 0x100efaf4
push ebx
push esi
call fcn.1005ff80
add esp, 8
mov eax, dword [esi + 4]
mov ebp, dword [esi]
mov dword [esp + 0x28], ebp
cmp eax, ebx
jge 0x100efb11
mov ecx, ebx
lea edi, [ebp + eax*4]
sub ecx, eax
xor eax, eax
rep stosd dword es:[edi], eax
mov edi, dword [esp + 0x20]
mov dword [esi + 4], ebx
cmp ebx, dword [edi + 8]
jle 0x100efb23
push ebx
push edi
call fcn.1005ff80
add esp, 8
mov eax, dword [edi]
mov dword [esp + 0x18], eax
mov dword [eax], 1
cmp ebx, 1
jle 0x100efb42
lea edi, [eax + 4]
lea ecx, [ebx - 1]
xor eax, eax
rep stosd dword es:[edi], eax
mov edi, dword [esp + 0x20]
mov esi, dword [esp + 0x24]
mov dword [edi + 4], ebx
cmp ebx, dword [esi + 8]
jle 0x100efb58
push ebx
push esi
call fcn.1005ff80
add esp, 8
mov edx, dword [esi]
mov dword [esp + 0x30], edx
test ebx, ebx
jle 0x100efb6a
mov ecx, ebx
xor eax, eax
mov edi, edx
rep stosd dword es:[edi], eax
mov eax, dword [esp + 0x14]
mov dword [esi + 4], ebx
mov ecx, dword [eax]
mov dword [esp + 0x2c], ecx
jmp 0x100efb80
cmp dword [esp + 0x10], 0
je 0x100efc4a
jmp 0x100efb90
mov eax, dword [ebp]
test al, 1
jne 0x100efc4a
mov edx, dword [esp + 0x18]
mov edx, dword [edx]
mov edi, eax
mov eax, dword [esp + 0x54]
mov ecx, dword [eax]
mov eax, dword [ecx]
mov ebx, edx
and ebx, 1
neg ebx
and eax, ebx
xor edx, eax
mov eax, dword [esp + 0x1c]
dec eax
xor esi, esi
test eax, eax
jle 0x100efc2d
mov eax, dword [esp + 0x18]
sub ebp, eax
mov dword [esp + 0x40], ebp
mov ebp, 0xfffffffc
sub ebp, eax
lea ecx, [eax + 4]
mov dword [esp + 0x44], ebp
lea esp, [esp]
mov eax, dword [esp + 0x40]
mov eax, dword [eax + ecx]
mov ebp, eax
shl ebp, 0x1f
shr edi, 1
or ebp, edi
mov edi, dword [esp + 0x28]
mov dword [edi + esi*4], ebp
mov ebp, dword [esp + 0x54]
mov ebp, dword [ebp]
mov edi, eax
mov eax, dword [esp + 0x44]
add eax, ecx
mov eax, dword [eax + ebp + 4]
and eax, ebx
xor eax, dword [ecx]
shr edx, 1
mov ebp, eax
shl ebp, 0x1f
or ebp, edx
mov edx, eax
mov eax, dword [esp + 0x1c]
mov dword [ecx - 4], ebp
inc esi
dec eax
add ecx, 4
cmp esi, eax
jl 0x100efbe0
mov ebp, dword [esp + 0x28]
mov ecx, dword [esp + 0x18]
mov ebx, dword [esp + 0x1c]
shr edi, 1
shr edx, 1
dec dword [esp + 0x10]
mov dword [ebp + esi*4], edi
mov dword [ecx + esi*4], edx
jne 0x100efb90
mov edx, dword [esp + 0x10]
cmp edx, 0x20
jg 0x100efc67
mov eax, dword [ebp]
test eax, eax
je 0x100efd6b
cmp eax, 1
je 0x100efd2a
mov ecx, dword [esp + 0x34]
cmp edx, ecx
jge 0x100efcb3
mov eax, dword [esp + 0x38]
mov ebp, dword [esp + 0x2c]
mov dword [esp + 0x34], edx
mov edx, dword [esp + 0x14]
mov dword [esp + 0x38], edx
mov edx, dword [esp + 0x24]
mov dword [esp + 0x14], eax
mov eax, dword [eax]
mov dword [esp + 0x10], ecx
mov ecx, dword [esp + 0x20]
mov dword [esp + 0x20], edx
mov edx, dword [esp + 0x30]
mov dword [esp + 0x2c], eax
mov eax, dword [ecx]
mov dword [esp + 0x24], ecx
mov dword [esp + 0x28], ebp
mov dword [esp + 0x18], edx
mov dword [esp + 0x30], eax
test ebx, ebx
jle 0x100efce5
mov edx, dword [esp + 0x2c]
mov esi, dword [esp + 0x30]
mov ecx, dword [esp + 0x18]
sub edx, ebp
sub esi, ebp
mov eax, ebp
sub ecx, ebp
mov edi, ebx
lea ecx, [ecx]
mov ebx, dword [edx + eax]
xor dword [eax], ebx
mov ebx, dword [esi + eax]
xor dword [ecx + eax], ebx
add eax, 4
dec edi
jne 0x100efcd0
mov ebx, dword [esp + 0x1c]
mov eax, dword [esp + 0x10]
cmp eax, dword [esp + 0x34]
jne 0x100efb80
dec eax
cdq
and edx, 0x1f
lea esi, [edx + eax]
sar esi, 5
mov eax, dword [ebp + esi*4]
test eax, eax
jne 0x100efd13
test esi, esi
je 0x100efd13
mov eax, dword [ebp + esi*4 - 4]
dec esi
test eax, eax
je 0x100efd06
push eax
call fcn.1005fd00
shl esi, 5
add esp, 4
add eax, esi
mov dword [esp + 0x10], eax
jmp 0x100efb80
mov edx, dword [esp + 0x20]
mov eax, dword [edx + 4]
test eax, eax
jle 0x100efd51
mov ecx, dword [edx]
lea ecx, [ecx + eax*4 - 4]
jmp 0x100efd40
mov esi, dword [ecx]
sub ecx, 4
test esi, esi
jne 0x100efd4e
dec eax
test eax, eax
jg 0x100efd40
mov dword [edx + 4], eax
push edx
mov edx, dword [esp + 0x50]
push edx
call fcn.1005ffc0
add esp, 8
test eax, eax
je 0x100efd6b
mov dword [esp + 0x3c], 1
mov ebx, dword [esp + 0x58]
pop ebp
pop esi
push ebx
call fcn.1009a4f0
mov eax, dword [esp + 0x38]
add esp, 4
pop edi
pop ebx
add esp, 0x38
ret