Function at 0x404f50
Capabilities:
Encode data using xor
Generate random numbers using the delphi lcg
Hash data with crc32
Read file on windows
Resolve function by parsing pe exports

Disassembly:
push ebp
mov ebp, esp
sub esp, 0x24
mov eax, dword [0x5f1464]
xor eax, ebp
mov dword [ebp - 4], eax
push ebx
push esi
push edi
mov edi, dword [ebp + 0xc]
xor eax, eax
xor ebx, ebx
mov dword [ebp - 0x24], edi
mov dword [ebp - 0x14], eax
mov dword [ebp - 0x20], ebx
test edi, edi
je 0x404f79
mov byte [edi], al
test ecx, ecx
je 0x4052ae
mov esi, dword [ecx + 0x7c]
test esi, esi
je 0x4052ae
cmp dword [esi], eax
jne 0x404fa6
mov eax, 0xffffff9c
pop edi
pop esi
pop ebx
mov ecx, dword [ebp - 4]
xor ecx, ebp
call fcn.00545b6c
mov esp, ebp
pop ebp
ret
mov eax, dword [ebp + 8]
test eax, eax
jne 0x404fbe
pop edi
pop esi
pop ebx
mov ecx, dword [ebp - 4]
xor ecx, ebp
call fcn.00545b6c
mov esp, ebp
pop ebp
ret
mov ecx, dword [esi + 0x5c]
mov dword [esi + 0x10], edx
mov dword [esi + 0x14], eax
cmp eax, ecx
jbe 0x404fd0
mov dword [esi + 0x14], ecx
mov eax, ecx
test eax, eax
je 0x40529b
nop dword [eax + eax]
mov ebx, dword [esi + 8]
test ebx, ebx
jne 0x40512f
mov eax, dword [esi + 0x58]
test eax, eax
je 0x40512f
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 0x40502d
cmp byte [ecx + 1], 0
je 0x405267
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 0x405030
mov dword [ecx + 0x1c], edx
mov edi, dword [esi + 0x60]
mov dword [ebp - 0x18], edi
cmp byte [edi], 0
je 0x40505a
push 0
lea eax, [ebp - 8]
push eax
push ebx
push dword [esi]
push dword [edi + 4]
call dword [sym.imp.KERNEL32.dll_ReadFile]
test eax, eax
jne 0x405055
mov byte [edi + 8], 1
mov eax, dword [ebp - 8]
jmp 0x405088
mov edx, dword [edi + 0x1c]
mov ecx, dword [edi + 0x18]
mov edi, ecx
sub edi, edx
lea eax, [edx + ebx]
cmp eax, ecx
mov eax, dword [ebp - 0x18]
cmovbe edi, ebx
push edi
mov eax, dword [eax + 0x14]
add eax, edx
push eax
push dword [esi]
call fcn.00549bd0
mov eax, dword [ebp - 0x18]
add esp, 0xc
add dword [eax + 0x1c], edi
mov eax, edi
xor edx, edx
div ebx
cmp eax, 1
jne 0x405267
add dword [esi + 0x3c], ebx
sub dword [esi + 0x58], ebx
cmp byte [esi + 0x6c], 0
mov eax, dword [esi]
mov dword [ebp - 0x18], eax
mov dword [esi + 4], eax
mov dword [esi + 8], ebx
je 0x40512f
xor ecx, ecx
mov eax, ebx
mov dword [ebp - 0xc], ecx
test eax, eax
je 0x40512f
nop dword [eax + 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 - 0x18]
shr edx, 8
xor dl, byte [ecx + eax]
mov ecx, dword [esi + 0x70]
movsx eax, dl
xor eax, ecx
shr ecx, 8
movzx eax, al
xor ecx, dword [eax*4 + 0x5d4298]
movzx eax, cl
add eax, dword [esi + 0x74]
imul eax, eax, 0x8088405
mov dword [esi + 0x70], ecx
mov ecx, dword [ebp - 0xc]
inc eax
mov dword [esi + 0x74], eax
shr eax, 0x18
xor eax, edi
shr edi, 8
movzx eax, al
xor edi, dword [eax*4 + 0x5d4298]
mov eax, dword [ebp - 0x18]
mov dword [esi + 0x78], edi
mov byte [ecx + eax], dl
inc ecx
mov dword [ebp - 0xc], ecx
cmp ecx, ebx
jb 0x4050c0
mov ebx, dword [esi + 8]
mov edx, dword [esi + 0x7c]
mov ecx, ebx
cmp edx, ebx
cmovbe ecx, edx
mov dword [ebp - 0xc], ecx
test ecx, ecx
je 0x40516f
mov eax, dword [esi + 4]
add eax, ecx
mov cl, byte [eax - 1]
mov byte [ebp - 0xd], cl
mov ecx, dword [ebp - 0xc]
sub ebx, ecx
sub dword [esi + 0x5c], ecx
sub edx, ecx
mov dword [esi + 8], ebx
mov dword [esi + 4], eax
mov dword [esi + 0x7c], edx
jne 0x40516f
mov al, byte [ebp - 0xd]
cmp al, byte [esi + 0x80]
jne 0x40527b
cmp dword [esi + 0x64], 0
jne 0x4051fc
mov eax, dword [esi + 0x14]
cmp eax, ebx
mov edi, eax
mov dword [ebp - 0x1c], eax
cmovae edi, ebx
xor edx, edx
mov dword [ebp - 0xc], edi
test edi, edi
je 0x4051aa
nop
mov eax, dword [esi + 4]
mov ecx, dword [esi + 0x10]
mov al, byte [edx + eax]
mov byte [edx + ecx], al
inc edx
cmp edx, edi
jb 0x405190
mov eax, dword [esi + 0x14]
mov ebx, dword [esi + 8]
mov dword [ebp - 0x1c], eax
mov edi, dword [esi + 0x10]
mov edx, edi
push dword [ebp - 0xc]
mov ecx, dword [esi + 0x50]
call fcn.004037f0
mov ecx, dword [ebp - 0xc]
add esp, 4
sub dword [esi + 0x5c], ecx
sub ebx, ecx
add dword [esi + 4], ecx
add dword [esi + 0x18], ecx
mov dword [esi + 0x50], eax
mov eax, dword [ebp - 0x1c]
sub eax, ecx
mov dword [esi + 8], ebx
mov ebx, dword [ebp - 0x20]
mov dword [esi + 0x14], eax
add ebx, ecx
cmp dword [esi + 0x5c], 0
lea eax, [edi + ecx]
mov dword [esi + 0x10], eax
mov eax, dword [ebp - 0x14]
mov dword [ebp - 0x20], ebx
jne 0x405248
mov edi, dword [ebp - 0x24]
test edi, edi
je 0x405248
mov byte [edi], 1
jmp 0x405248
mov edi, dword [esi + 0x18]
lea ecx, [esi + 4]
mov ebx, dword [esi + 0x10]
call fcn.00403d20
mov ecx, dword [esi + 0x50]
mov edx, ebx
mov dword [ebp - 0x14], eax
mov eax, dword [esi + 0x18]
sub eax, edi
push eax
mov dword [ebp - 0xc], eax
call fcn.004037f0
mov ecx, dword [esi + 0x5c]
add esp, 4
mov ebx, dword [ebp - 0x20]
sub ecx, dword [ebp - 0xc]
add ebx, dword [ebp - 0xc]
mov dword [esi + 0x50], eax
mov eax, dword [ebp - 0x14]
mov dword [esi + 0x5c], ecx
mov dword [ebp - 0x20], ebx
cmp eax, 1
je 0x405291
test ecx, ecx
je 0x405291
test eax, eax
jne 0x4052b3
cmp dword [esi + 0x14], 0
ja 0x404fe0
test eax, eax
je 0x40529b
pop edi
pop esi
pop ebx
mov ecx, dword [ebp - 4]
xor ecx, ebp
call fcn.00545b6c
mov esp, ebp
pop ebp
ret
or eax, 0xffffffff
pop edi
pop esi
pop ebx
mov ecx, dword [ebp - 4]
xor ecx, ebp
call fcn.00545b6c
mov esp, ebp
pop ebp
ret
mov eax, 0xffffff96
pop edi
pop esi
pop ebx
mov ecx, dword [ebp - 4]
xor ecx, ebp
call fcn.00545b6c
mov esp, ebp
pop ebp
ret
mov ecx, dword [ebp - 0x24]
test ecx, ecx
je 0x40529b
mov byte [ecx], 1
mov eax, ebx
pop edi
pop esi
pop ebx
mov ecx, dword [ebp - 4]
xor ecx, ebp
call fcn.00545b6c
mov esp, ebp
pop ebp
ret
mov eax, 0xffffff9a
mov ecx, dword [ebp - 4]
pop edi
pop esi
xor ecx, ebp
pop ebx
call fcn.00545b6c
mov esp, ebp
pop ebp
ret