Function at 0x402f20
Capabilities:
Check for time delay via gettickcount
Get file size

Disassembly:
push ebp
mov ebp, esp
sub esp, 0x2c
push ebx
push esi
xor esi, esi
push edi
mov dword [ebp - 4], esi
call dword [sym.imp.KERNEL32.dll_GetTickCount]
push 0x400
mov dword [ebp - 0xc], esi
mov dword [ebp - 8], esi
mov esi, 0x42ac00
push esi
push dword [0x4243a4]
mov edi, eax
add edi, 0x3e8
call dword [sym.imp.KERNEL32.dll_GetModuleFileNameA]
push 3
push 0x80000000
push esi
call fcn.0040543a
mov ebx, eax
cmp ebx, 0xffffffff
mov dword [ebp - 0x10], ebx
mov dword [0x409010], ebx
jne 0x402f80
mov eax, str.Error_launching_installer
jmp 0x40319f
push esi
call fcn.00405742
push 0
push ebx
call dword [sym.imp.KERNEL32.dll_GetFileSize]
test eax, eax
mov dword [0x41ed78], eax
mov esi, eax
jle 0x4030c7
mov eax, dword [0x424408]
neg eax
sbb eax, eax
and eax, reloc.USER32.dll_FillRect
add eax, 0x200
cmp esi, eax
mov ebx, esi
jl 0x402fb9
mov ebx, eax
push ebx
push 0x416ce8
call fcn.00402cda
test eax, eax
je 0x403132
xor eax, eax
cmp dword [0x424408], eax
jne 0x403055
push 0x1c
push 0x416ce8
lea eax, [ebp - 0x2c]
push eax
call fcn.004053fa
mov ecx, dword [ebp - 0x2c]
test ecx, 0xfffffff0
jne 0x40308f
cmp dword [ebp - 0x28], 0xdeadbeef
jne 0x40308f
cmp dword [ebp - 0x1c], 0x74736e49
jne 0x40308f
cmp dword [ebp - 0x20], 0x74666f73
jne 0x40308f
cmp dword [ebp - 0x24], 0x6c6c754e
jne 0x40308f
mov eax, dword [ebp - 0x14]
cmp eax, esi
jg 0x40312b
or dword [ebp + 8], ecx
test byte [ebp + 8], 8
mov edx, dword [0x41ed70]
mov dword [0x424408], edx
jne 0x403047
test byte [ebp + 8], 4
jne 0x4030b8
inc dword [ebp - 8]
lea esi, [eax - 4]
cmp ebx, esi
jbe 0x40308f
mov ebx, esi
jmp 0x40308f
test byte [ebp + 8], 2
jne 0x40308f
cmp dword [ebp - 4], eax
je 0x403068
push eax
call fcn.004056e2
jmp 0x40308f
call dword [sym.imp.KERNEL32.dll_GetTickCount]
cmp eax, edi
jbe 0x40308f
push str.verifying_installer:__d__
push 0x402c4e
push 0
push 0x6f
push dword [0x4243a4]
call dword [sym.imp.USER32.dll_CreateDialogParamA]
mov dword [ebp - 4], eax
cmp esi, dword [0x41ed78]
jge 0x4030a8
push ebx
push 0x416ce8
push dword [ebp - 0xc]
call fcn.00405dc6
mov dword [ebp - 0xc], eax
add dword [0x41ed70], ebx
sub esi, ebx
test esi, esi
jg 0x402f9e
cmp dword [ebp - 4], 0
je 0x4030c7
push dword [ebp - 4]
call dword [sym.imp.USER32.dll_DestroyWindow]
xor edi, edi
cmp dword [0x424408], edi
je 0x40312b
cmp dword [ebp - 8], edi
je 0x4030f8
push dword [0x41ed70]
call fcn.00402d0c
push 4
lea eax, [ebp - 8]
push eax
call fcn.00402cda
test eax, eax
je 0x40312b
mov eax, dword [ebp - 0xc]
cmp eax, dword [ebp - 8]
jne 0x40312b
push dword [ebp - 0x18]
push 0x40
call dword [sym.imp.KERNEL32.dll_GlobalAlloc]
mov esi, eax
mov eax, dword [0x424408]
add eax, 0x1c
push eax
call fcn.00402d0c
push dword [ebp - 0x18]
push esi
push edi
push 0xffffffffffffffff
call fcn.00402d23
cmp eax, dword [ebp - 0x18]
je 0x403143
push esi
call dword [sym.imp.KERNEL32.dll_GlobalFree]
mov eax, str.The_installer_you_are_trying_to_use_is_corrupted_or_incomplete._nThis_could_be_the_result_of_a_damaged_disk__a_failed_download_or_a_virus._n_nYou_may_want_to_contact_the_author_of_this_installer_to_obtain_a_new_copy._n_nIt_may_be_possible_to_skip_this_check_using_the__NCRC_command_line_switch_n_NOT_RECOMMENDED_.
jmp 0x40319f
cmp dword [ebp - 4], 0
je 0x40312b
push dword [ebp - 4]
call dword [sym.imp.USER32.dll_DestroyWindow]
jmp 0x40312b
test byte [ebp + 8], 2
mov dword [0x4243a8], esi
je 0x403152
or dword [esi], 8
mov eax, dword [esi]
and eax, 0x18
test byte [ebp - 0x2c], 1
mov dword [0x424440], eax
mov eax, dword [esi]
mov dword [0x424404], eax
je 0x40316f
inc dword [0x424400]
push 8
lea eax, [esi + 0x44]
pop ecx
sub eax, 8
add dword [eax], esi
dec ecx
jne 0x403175
push 1
push edi
push edi
push dword [ebp - 0x10]
call dword [sym.imp.KERNEL32.dll_SetFilePointer]
mov dword [esi + 0x3c], eax
push 0x40
add esi, 4
push esi
push 0x4243c0
call fcn.004053fa
xor eax, eax
pop edi
pop esi
pop ebx
leave
ret 4