Function at 0x4850f0
Capabilities:
Encode data using xor
Generate random numbers using the delphi lcg
Hash data with crc32

Disassembly:
push ebp
mov ebp, esp
mov eax, 0x509c
call fcn.004aa250
mov eax, dword [0x4eec64]
xor eax, ebp
mov dword [ebp - 8], eax
mov eax, dword [ebp + 8]
push esi
mov esi, dword [ebp + 0x10]
push edi
xor edi, edi
mov dword [ebp - 0x5094], ecx
cmp dword [ebx + 0x14], edi
je 0x485133
mov eax, 0x40000
pop edi
pop esi
mov ecx, dword [ebp - 8]
xor ecx, ebp
call fcn.004a4220
mov esp, ebp
pop ebp
ret 0xc
cmp byte [ebx + 0x2c], 0
je 0x485150
mov eax, 0x50000
pop edi
pop esi
mov ecx, dword [ebp - 8]
xor ecx, ebp
call fcn.004a4220
mov esp, ebp
pop ebp
ret 0xc
mov dword [ebp - 0x509c], edi
cmp dword [ebx], edi
je 0x485169
cmp esi, 4
je 0x485169
mov dword [ebp - 0x509c], 0xc
lea edx, [ebp - 0x2034]
sub edx, eax
movzx ecx, word [eax]
mov word [edx + eax], cx
add eax, 2
cmp cx, di
jne 0x485171
cmp word [ebp - 0x2034], di
je 0x4859c9
lea eax, [ebp - 0x2034]
cmp word [eax], 0x5c
jne 0x4851a1
mov edx, 0x2f
mov word [eax], dx
add eax, 2
cmp word [eax], di
jne 0x485193
cmp esi, 4
sete dl
mov byte [ebp - 0x508d], dl
test dl, dl
je 0x4851e3
lea eax, [ebp - 0x2034]
lea esi, [eax + 2]
mov cx, word [eax]
add eax, 2
cmp cx, di
jne 0x4851c2
sub eax, esi
sar eax, 1
cmp word [ebp + eax*2 - 0x2036], 0x2f
mov byte [ebp - 0x508e], 1
jne 0x4851ea
mov byte [ebp - 0x508e], 0
mov dword [ebp - 0x5098], 8
test dl, dl
jne 0x485207
lea edx, [ebp - 0x2034]
call fcn.00484500
test al, al
je 0x48520d
mov dword [ebp - 0x5098], edi
mov eax, dword [ebp + 0x10]
cmp eax, 2
jne 0x485224
mov eax, dword [ebp - 0x5094]
mov ecx, ebx
call fcn.00484af0
jmp 0x485265
cmp eax, 1
jne 0x48523e
mov eax, dword [ebp + 0xc]
mov edi, dword [ebp - 0x5094]
push eax
mov esi, ebx
call fcn.00484b80
xor edi, edi
jmp 0x485265
cmp eax, 3
jne 0x485255
mov eax, dword [ebp + 0xc]
mov ecx, dword [ebp - 0x5094]
mov esi, ebx
call fcn.00484cc0
jmp 0x485265
cmp eax, 4
jne 0x4859c9
mov esi, ebx
call fcn.00484d90
cmp eax, edi
jne 0x4859ce
push edi
push edi
push 0x1000
lea ecx, [ebp - 0x4048]
push ecx
push 0xffffffffffffffff
lea edx, [ebp - 0x2034]
push edx
push edi
push 0xfde9
mov dword [ebp - 0x203c], edi
mov byte [ebp - 0x5054], 0
call dword [sym.imp.KERNEL32.dll_WideCharToMultiByte]
lea eax, [ebp - 0x4048]
lea edx, [eax + 1]
mov cl, byte [eax]
inc eax
test cl, cl
jne 0x4852a6
sub eax, edx
mov dword [ebp - 0x5074], eax
cmp byte [ebp - 0x508e], cl
je 0x4852dd
lea edi, [ebp - 0x4048]
dec edi
mov al, byte [edi + 1]
inc edi
test al, al
jne 0x4852c4
mov ax, word [0x4dd578]
mov word [edi], ax
inc dword [ebp - 0x5074]
xor edi, edi
xor ecx, ecx
mov eax, 0x14
mov word [ebp - 0x5062], cx
mov ecx, dword [ebx + 0x68]
mov word [ebp - 0x508a], ax
mov edx, 0xb17
mov eax, 8
mov byte [ebp - 0x3048], 0
mov dword [ebp - 0x404c], edi
mov dword [ebp - 0x5068], edi
mov dword [ebp - 0x2048], 1
mov dword [ebp - 0x2040], edi
mov word [ebp - 0x508c], dx
mov dword [ebp - 0x5084], ecx
mov dword [ebp - 0x5080], edi
mov word [ebp - 0x5088], ax
cmp dword [ebx], edi
je 0x485355
cmp byte [ebp - 0x508d], 0
jne 0x485355
mov eax, 9
mov word [ebp - 0x5088], ax
mov word [ebp - 0x5060], ax
mov eax, dword [ebp - 0x5098]
mov word [ebp - 0x5086], ax
cmp eax, edi
jne 0x485384
mov eax, dword [ebx + 0x70]
cmp eax, edi
jl 0x485384
mov edx, dword [ebp - 0x509c]
add eax, edx
mov dword [ebp - 0x507c], eax
jmp 0x48538a
mov dword [ebp - 0x507c], edi
mov eax, dword [ebx + 0x70]
mov edx, dword [ebx + 0x4c]
mov esi, dword [ebx + 0x58]
mov edi, dword [ebx + 0x5c]
mov dword [ebp - 0x5078], eax
mov eax, dword [ebx + 0x10]
add eax, dword [ebx + 0x18]
xor ecx, ecx
mov word [ebp - 0x5064], cx
mov dword [ebp - 0x505c], edx
mov dword [ebp - 0x5058], eax
mov al, byte [ebx + 0x58]
lea ecx, [ebp - 0x28]
lea edx, [ebp - 0x34]
mov dword [ebp - 0x4054], ecx
mov dword [ebp - 0x4050], edx
mov byte [ebp - 0x23], al
mov eax, esi
mov edx, edi
mov cl, 8
mov dword [ebp - 0x5070], 0x11
mov dword [ebp - 0x506c], 9
mov byte [ebp - 0x28], 0x55
mov byte [ebp - 0x27], 0x54
mov byte [ebp - 0x26], 0xd
mov byte [ebp - 0x25], 0
mov byte [ebp - 0x24], 7
call fcn.004bb150
mov byte [ebp - 0x22], al
mov eax, esi
mov edx, edi
mov cl, 0x10
call fcn.004bb150
mov byte [ebp - 0x21], al
mov eax, esi
mov edx, edi
mov cl, 0x18
call fcn.004bb150
mov cl, byte [ebx + 0x50]
mov esi, dword [ebx + 0x50]
mov edi, dword [ebx + 0x54]
mov byte [ebp - 0x20], al
mov byte [ebp - 0x1f], cl
mov eax, esi
mov edx, edi
mov cl, 8
call fcn.004bb150
mov byte [ebp - 0x1e], al
mov eax, esi
mov edx, edi
mov cl, 0x10
call fcn.004bb150
mov byte [ebp - 0x1d], al
mov eax, esi
mov edx, edi
mov cl, 0x18
call fcn.004bb150
movzx edx, byte [ebx + 0x60]
mov esi, dword [ebx + 0x60]
mov edi, dword [ebx + 0x64]
mov byte [ebp - 0x1c], al
mov byte [ebp - 0x1b], dl
mov eax, esi
mov edx, edi
mov cl, 8
call fcn.004bb150
mov byte [ebp - 0x1a], al
mov eax, esi
mov edx, edi
mov cl, 0x10
call fcn.004bb150
mov byte [ebp - 0x19], al
mov eax, esi
mov edx, edi
mov cl, 0x18
call fcn.004bb150
mov ecx, dword [ebp - 0x24]
mov byte [ebp - 0x18], al
mov eax, dword [ebp - 0x28]
mov dword [ebp - 0x34], eax
mov dword [ebp - 0x30], ecx
movzx edx, byte [ebp - 0x20]
mov esi, ebx
lea edi, [ebp - 0x508c]
mov byte [ebp - 0x2c], dl
mov byte [ebp - 0x32], 5
call fcn.00483a10
test eax, eax
je 0x4854d2
call fcn.00484f10
mov eax, 0x400
pop edi
pop esi
mov ecx, dword [ebp - 8]
xor ecx, ebp
call fcn.004a4220
mov esp, ebp
pop ebp
ret 0xc
mov eax, dword [ebp - 0x5070]
mov ecx, dword [ebp - 0x5074]
lea edx, [eax + ecx + 0x1e]
add dword [ebx + 0x18], edx
cmp dword [ebx + 0x14], 0
je 0x485505
call fcn.00484f10
mov eax, dword [ebx + 0x14]
pop edi
pop esi
mov ecx, dword [ebp - 8]
xor ecx, ebp
call fcn.004a4220
mov esp, ebp
pop ebp
ret 0xc
mov esi, dword [ebx]
lea edi, [ebx + 0x30]
mov dword [edi], 0x12345678
mov dword [ebx + 0x34], 0x23456789
mov dword [ebx + 0x38], 0x34567890
test esi, esi
je 0x485534
mov cl, byte [esi]
test cl, cl
je 0x485534
mov edx, edi
call fcn.004844b0
add esi, 1
jne 0x485522
cmp byte [0x4f3869], 0
jne 0x485556
call dword [sym.imp.USER32.dll_GetDesktopWindow]
mov esi, eax
call dword [sym.imp.KERNEL32.dll_GetTickCount]
xor esi, eax
push esi
call fcn.004a5a78
add esp, 4
xor esi, esi
call fcn.004a5a8a
sar eax, 7
mov byte [ebp + esi - 0x14], al
inc esi
cmp esi, 0xc
jl 0x485558
mov eax, dword [ebp - 0x5084]
shr eax, 8
mov byte [ebp - 9], al
mov dword [ebp - 0x5094], 0
mov ecx, dword [ebp - 0x5094]
mov cl, byte [ebp + ecx - 0x14]
movsx ecx, cl
mov esi, dword [edi]
xor ecx, esi
and ecx, 0xff
mov ecx, dword [ecx*4 + 0x4da8c0]
mov eax, dword [edi + 8]
shr esi, 8
xor ecx, esi
mov dword [edi], ecx
movzx ecx, cl
add ecx, dword [edi + 4]
mov edx, eax
imul ecx, ecx, 0x8088405
inc ecx
mov dword [edi + 4], ecx
shr ecx, 0x18
xor ecx, eax
and ecx, 0xff
and edx, 0xfffd
or edx, 2
shr eax, 8
xor eax, dword [ecx*4 + 0x4da8c0]
mov esi, dword [edi]
mov ecx, edx
xor ecx, 1
imul ecx, edx
shr ecx, 8
mov dword [edi + 8], eax
mov eax, dword [ebp - 0x5094]
xor cl, byte [ebp + eax - 0x14]
mov byte [ebp + eax - 0x14], cl
mov cl, byte [ebp + eax - 0x13]
movsx ecx, cl
xor ecx, esi
and ecx, 0xff
mov ecx, dword [ecx*4 + 0x4da8c0]
mov eax, dword [edi + 8]
shr esi, 8
xor ecx, esi
mov dword [edi], ecx
movzx ecx, cl
add ecx, dword [edi + 4]
mov edx, eax
imul ecx, ecx, 0x8088405
inc ecx
mov dword [edi + 4], ecx
shr ecx, 0x18
xor ecx, eax
and ecx, 0xff
mov esi, dword [edi]
and edx, 0xfffd
or edx, 2
shr eax, 8
xor eax, dword [ecx*4 + 0x4da8c0]
mov ecx, edx
xor ecx, 1
imul ecx, edx
shr ecx, 8
mov dword [edi + 8], eax
mov eax, dword [ebp - 0x5094]
xor cl, byte [ebp + eax - 0x13]
mov byte [ebp + eax - 0x13], cl
mov cl, byte [ebp + eax - 0x12]
mov eax, dword [edi + 8]
movsx ecx, cl
xor ecx, esi
and ecx, 0xff
mov ecx, dword [ecx*4 + 0x4da8c0]
shr esi, 8
xor ecx, esi
mov dword [edi], ecx
movzx ecx, cl
add ecx, dword [edi + 4]
mov edx, eax
imul ecx, ecx, 0x8088405
and edx, 0xfffd
or edx, 2
inc ecx
mov dword [edi + 4], ecx
shr ecx, 0x18
xor ecx, eax
and ecx, 0xff
shr eax, 8
xor eax, dword [ecx*4 + 0x4da8c0]
mov esi, dword [edi]
mov ecx, edx
xor ecx, 1
imul ecx, edx
shr ecx, 8
mov dword [edi + 8], eax
mov eax, dword [ebp - 0x5094]
xor cl, byte [ebp + eax - 0x12]
mov byte [ebp + eax - 0x12], cl
mov cl, byte [ebp + eax - 0x11]
movsx ecx, cl
xor ecx, esi
and ecx, 0xff
mov ecx, dword [ecx*4 + 0x4da8c0]
mov eax, dword [edi + 8]
shr esi, 8
xor ecx, esi
mov dword [edi], ecx
movzx ecx, cl
add ecx, dword [edi + 4]
mov edx, eax
imul ecx, ecx, 0x8088405
inc ecx
mov dword [edi + 4], ecx
shr ecx, 0x18
xor ecx, eax
and ecx, 0xff
shr eax, 8
xor eax, dword [ecx*4 + 0x4da8c0]
and edx, 0xfffd
or edx, 2
mov ecx, edx
xor ecx, 1
imul ecx, edx
mov dword [edi + 8], eax
mov eax, dword [ebp - 0x5094]
shr ecx, 8
xor cl, byte [ebp + eax - 0x11]
add eax, 4
cmp eax, 0xc
mov byte [ebp + eax - 0x15], cl
mov dword [ebp - 0x5094], eax
jl 0x485580
xor esi, esi
cmp dword [ebx], esi
je 0x485784
cmp byte [ebp - 0x508d], 0
jne 0x485770
push 0xc
lea edx, [ebp - 0x14]
push edx
mov ecx, ebx
call fcn.004848d0
add dword [ebx + 0x18], 0xc
cmp dword [ebx], esi
je 0x485784
cmp byte [ebp - 0x508d], 0
jne 0x485784
mov eax, 1
jmp 0x485786
xor eax, eax
cmp byte [ebp - 0x508d], 0
mov byte [ebx + 0x2d], al
jne 0x4857be
mov eax, dword [ebp - 0x5098]
cmp eax, 8
jne 0x4857af
lea eax, [ebp - 0x508c]
push eax
mov edi, ebx
call fcn.00484f70
mov esi, eax
jmp 0x4857c4
cmp eax, esi
jne 0x4857c4
mov edi, ebx
call fcn.00485080
mov esi, eax
jmp 0x4857c4
mov dword [ebx + 0x90], esi
cmp byte [ebx + 0x80], 0
mov byte [ebx + 0x2d], 0
je 0x4857df
mov eax, dword [ebx + 0x7c]
test eax, eax
je 0x4857df
push eax
call dword [sym.imp.KERNEL32.dll_CloseHandle]
mov ecx, dword [ebx + 0x90]
mov eax, dword [ebx + 0x14]
mov edi, dword [ebx + 0x74]
add dword [ebx + 0x18], ecx
mov dword [ebx + 0x7c], 0
mov dword [ebx + 0x70], edi
test eax, eax
jne 0x4859ce
test esi, esi
jne 0x4854bb
mov edx, dword [ebp - 0x509c]
lea eax, [ecx + edx]
cmp dword [ebp - 0x507c], eax
mov edx, dword [ebx + 0x78]
sete cl
cmp byte [ebx + 0x1c], 0
mov dword [ebp - 0x5080], edx
mov dword [ebp - 0x507c], eax
mov dword [ebp - 0x5078], edi
je 0x4858c9
cmp dword [ebx], esi
je 0x48584a
cmp byte [ebp - 0x508d], 0
je 0x4858c9
test byte [ebp - 0x5088], 1
mov ax, word [ebp - 0x5098]
mov word [ebp - 0x5086], ax
jne 0x48586d
mov ecx, 0xfff7
and word [ebp - 0x5088], cx
mov dx, word [ebp - 0x5088]
mov word [ebp - 0x5060], dx
mov edx, dword [ebp - 0x5058]
sub edx, dword [ebx + 0x10]
mov eax, ebx
call fcn.00484a30
test al, al
je 0x4858b2
mov esi, ebx
lea edi, [ebp - 0x508c]
call fcn.00483a10
test eax, eax
jne 0x4854bb
mov edx, dword [ebx + 0x18]
mov eax, ebx
call fcn.00484a30
test al, al
jne 0x48591e
mov eax, 0x2000000
pop edi
pop esi
mov ecx, dword [ebp - 8]
xor ecx, ebp
call fcn.004a4220
mov esp, ebp
pop ebp
ret 0xc
mov eax, dword [ebp - 0x5098]
cmp word [ebp - 0x5086], ax
je 0x4858ef
mov eax, 0x4000000
pop edi
pop esi
mov ecx, dword [ebp - 8]
xor ecx, ebp
call fcn.004a4220
mov esp, ebp
pop ebp
ret 0xc
test eax, eax
jne 0x4858f7
test cl, cl
je 0x4858d8
mov esi, ebx
lea edi, [ebp - 0x508c]
call fcn.00483cb0
test eax, eax
jne 0x4854bb
mov ax, word [ebp - 0x5060]
add dword [ebx + 0x18], 0x10
mov word [ebp - 0x5088], ax
mov eax, dword [ebx + 0x14]
test eax, eax
jne 0x4859ce
mov ecx, dword [ebp - 0x506c]
push ecx
call fcn.00495ded
mov edx, dword [ebp - 0x506c]
add esp, 4
mov esi, eax
mov eax, dword [ebp - 0x4050]
push edx
push eax
push esi
call fcn.004a4da0
add esp, 0xc
push 0x3054
mov dword [ebp - 0x4050], esi
call fcn.00495dbe
add esp, 4
push 0x3054
lea ecx, [ebp - 0x508c]
mov esi, eax
push ecx
push esi
call fcn.004a4da0
mov eax, dword [ebx + 0x44]
add esp, 0xc
test eax, eax
jne 0x485997
mov dword [ebx + 0x44], esi
pop edi
pop esi
mov ecx, dword [ebp - 8]
xor ecx, ebp
call fcn.004a4220
mov esp, ebp
pop ebp
ret 0xc
cmp dword [eax + 0x3050], 0
je 0x4859af
mov eax, dword [eax + 0x3050]
cmp dword [eax + 0x3050], 0
jne 0x4859a0
mov dword [eax + 0x3050], esi
xor eax, eax
pop edi
pop esi
mov ecx, dword [ebp - 8]
xor ecx, ebp
call fcn.004a4220
mov esp, ebp
pop ebp
ret 0xc
mov eax, 0x10000
mov ecx, dword [ebp - 8]
pop edi
xor ecx, ebp
pop esi
call fcn.004a4220
mov esp, ebp
pop ebp
ret 0xc