Function at 0x40dc90
Capabilities:
Encode data using xor
Generate random numbers using the delphi lcg
Hash data with crc32
Resolve function by parsing pe exports

Disassembly:
push ebp
mov ebp, esp
sub esp, 0x10
mov eax, edx
xor edx, edx
push edi
mov dword [ebp - 4], edx
xor edi, edi
mov edx, dword [ebp + 0xc]
mov dword [ebp - 8], edi
test edx, edx
je 0x40dcad
mov byte [edx], 0
test ecx, ecx
jne 0x40dcb9
lea eax, [ecx - 0x66]
pop edi
mov esp, ebp
pop ebp
ret
push esi
mov esi, dword [ecx + 0x7c]
test esi, esi
jne 0x40dcca
lea eax, [esi - 0x66]
pop esi
pop edi
mov esp, ebp
pop ebp
ret
cmp dword [esi], edi
jne 0x40dcd9
pop esi
mov eax, 0xffffff9c
pop edi
mov esp, ebp
pop ebp
ret
mov ecx, 0xf4240
mov dword [esi + 0x10], eax
cmp dword [esi + 0x5c], ecx
cmovb ecx, dword [esi + 0x5c]
mov eax, ecx
mov dword [esi + 0x14], ecx
test eax, eax
jne 0x40dcf4
mov byte [edx], 1
push ebx
test eax, eax
je 0x40df1d
nop dword [eax]
cmp dword [esi + 8], 0
jne 0x40ddff
mov eax, dword [esi + 0x58]
test eax, eax
je 0x40ddff
mov ecx, dword [esi + 0x60]
mov ebx, 0x4000
mov edx, dword [esi + 0x68]
cmp eax, ebx
cmovb ebx, eax
add edx, dword [esi + 0x3c]
cmp byte [ecx], 0
je 0x40dd4c
cmp byte [ecx + 1], 0
je 0x40defd
mov eax, dword [ecx + 0xc]
push 0
push 0
add eax, edx
push eax
push dword [ecx + 4]
call dword [sym.imp.KERNEL32.dll_SetFilePointer]
jmp 0x40dd4f
mov dword [ecx + 0x1c], edx
push dword [esi + 0x60]
mov ecx, dword [esi]
mov edx, ebx
push 1
call fcn.0040cd30
add esp, 8
cmp eax, 1
jne 0x40defd
add dword [esi + 0x3c], ebx
sub dword [esi + 0x58], ebx
cmp byte [esi + 0x6c], 0
mov eax, dword [esi]
mov dword [ebp - 0xc], eax
mov dword [esi + 4], eax
mov dword [esi + 8], ebx
je 0x40ddff
xor ecx, ecx
mov dword [ebp - 0x10], ecx
test ebx, ebx
je 0x40ddff
nop dword [eax]
mov edi, dword [esi + 0x78]
mov eax, edi
and eax, 0xfffd
or eax, 2
mov edx, eax
xor edx, 1
imul edx, eax
mov eax, dword [ebp - 0xc]
shr edx, 8
xor dl, byte [ecx + eax]
mov ecx, dword [esi + 0x70]
movsx eax, dl
xor eax, dword [esi + 0x70]
movzx eax, al
shr ecx, 8
mov eax, dword [eax*4 + 0x461810]
xor eax, ecx
mov ecx, dword [ebp - 0x10]
mov dword [esi + 0x70], eax
movzx eax, al
add eax, dword [esi + 0x74]
imul eax, eax, 0x8088405
inc eax
mov dword [esi + 0x74], eax
shr eax, 0x18
xor eax, edi
shr edi, 8
movzx eax, al
xor edi, dword [eax*4 + 0x461810]
mov eax, dword [ebp - 0xc]
mov dword [esi + 0x78], edi
mov byte [ecx + eax], dl
inc ecx
mov dword [ebp - 0x10], ecx
cmp ecx, ebx
jb 0x40dd90
mov ecx, dword [esi + 0x7c]
mov edx, dword [esi + 8]
cmp ecx, edx
cmova ecx, edx
test ecx, ecx
je 0x40de2f
mov eax, dword [esi + 4]
sub edx, ecx
add eax, ecx
mov bl, byte [eax - 1]
sub dword [esi + 0x7c], ecx
mov dword [esi + 8], edx
mov dword [esi + 4], eax
jne 0x40de2f
cmp bl, byte [esi + 0x80]
jne 0x40df07
cmp dword [esi + 0x64], 0
jne 0x40de9c
mov ebx, dword [esi + 8]
cmp dword [esi + 0x14], ebx
cmovb ebx, dword [esi + 0x14]
xor edx, edx
test ebx, ebx
je 0x40de56
mov eax, dword [esi + 4]
mov ecx, dword [esi + 0x10]
mov al, byte [edx + eax]
mov byte [edx + ecx], al
inc edx
cmp edx, ebx
jb 0x40de45
mov edi, dword [esi + 0x10]
mov edx, edi
mov ecx, dword [esi + 0x50]
push ebx
call fcn.0040c5d0
sub dword [esi + 0x5c], ebx
add esp, 4
sub dword [esi + 8], ebx
sub dword [esi + 0x14], ebx
add dword [esi + 4], ebx
add dword [esi + 0x18], ebx
mov dword [esi + 0x50], eax
lea eax, [edi + ebx]
mov edi, dword [ebp - 8]
add edi, ebx
mov dword [esi + 0x10], eax
cmp dword [esi + 0x5c], 0
mov ebx, dword [ebp - 4]
mov dword [ebp - 8], edi
jne 0x40dee6
mov edx, dword [ebp + 0xc]
test edx, edx
je 0x40dee6
mov byte [edx], 1
jmp 0x40dee6
mov edi, dword [esi + 0x18]
lea ecx, [esi + 4]
mov ebx, dword [esi + 0x10]
call fcn.0040c970
mov ecx, dword [esi + 0x50]
mov edx, ebx
mov dword [ebp - 4], eax
mov eax, dword [esi + 0x18]
sub eax, edi
push eax
mov dword [ebp - 0x10], eax
call fcn.0040c5d0
mov edi, dword [ebp - 8]
add esp, 4
mov ebx, dword [ebp - 4]
mov dword [esi + 0x50], eax
mov eax, dword [ebp - 0x10]
add edi, eax
sub dword [esi + 0x5c], eax
mov dword [ebp - 8], edi
cmp ebx, 1
je 0x40df13
cmp dword [esi + 0x5c], 0
je 0x40df13
test ebx, ebx
jne 0x40def4
cmp dword [esi + 0x14], 0
ja 0x40dd00
test ebx, ebx
je 0x40df1d
mov eax, ebx
pop ebx
pop esi
pop edi
mov esp, ebp
pop ebp
ret
pop ebx
pop esi
or eax, 0xffffffff
pop edi
mov esp, ebp
pop ebp
ret
pop ebx
pop esi
mov eax, 0xffffff96
pop edi
mov esp, ebp
pop ebp
ret
mov ecx, dword [ebp + 0xc]
test ecx, ecx
je 0x40df1d
mov byte [ecx], 1
pop ebx
pop esi
mov eax, edi
pop edi
mov esp, ebp
pop ebp
ret