Function at 0x4039b9
Capabilities:
Check for time delay via gettickcount
Get file size

Disassembly:
push ebp
mov ebp, esp
sub esp, 0x14c
push ebx
push esi
xor ebx, ebx
push edi
mov dword [ebp - 4], ebx
call dword [sym.imp.KERNEL32.dll_GetTickCount]
mov esi, 0x429c00
push 0x400
push esi
add eax, 0x3e8
push dword [0x423f20]
mov dword [ebp - 8], eax
mov dword [ebp - 0xc], ebx
mov dword [ebp - 0x10], ebx
call dword [sym.imp.KERNEL32.dll_GetModuleFileNameA]
push 3
push 0x80000000
push esi
call fcn.00406664
mov edi, eax
cmp edi, 0xffffffff
mov dword [0x423f34], edi
jne 0x403a19
mov eax, str.Error_launching_installer
jmp 0x403cb8
push esi
call fcn.004064db
push ebx
push edi
call dword [sym.imp.KERNEL32.dll_GetFileSize]
cmp eax, ebx
mov dword [0x41f4f0], eax
mov esi, eax
jle 0x403b8c
mov eax, dword [0x423f2c]
mov edi, esi
neg eax
sbb eax, eax
and eax, 0x7e00
add eax, 0x200
cmp esi, eax
jl 0x403a51
mov edi, eax
push edi
push 0x4174f0
call fcn.00403fd7
test eax, eax
je 0x403b67
cmp dword [0x423f2c], ebx
jne 0x403aeb
push 0x1c
lea eax, [ebp - 0x2c]
push 0x4174f0
push eax
call fcn.00406640
mov ecx, dword [ebp - 0x2c]
test ecx, 0xfffffff0
jne 0x403b1d
cmp dword [ebp - 0x28], 0xdeadbeef
jne 0x403b1d
cmp dword [ebp - 0x1c], 0x74736e49
jne 0x403b1d
cmp dword [ebp - 0x20], 0x74666f73
jne 0x403b1d
cmp dword [ebp - 0x24], 0x6c6c754e
jne 0x403b1d
mov eax, dword [ebp - 0x14]
cmp eax, esi
jg 0x403c5d
or dword [ebp + 8], ecx
mov edx, dword [0x4174e0]
test byte [ebp + 8], 8
mov dword [0x423f2c], edx
jne 0x403add
test byte [ebp + 8], 4
jne 0x403b7e
inc dword [ebp - 0x10]
lea esi, [eax - 4]
cmp edi, esi
jbe 0x403b1d
mov edi, esi
jmp 0x403b1d
test byte [ebp + 8], 2
jne 0x403b1d
cmp dword [ebp - 4], ebx
jne 0x403b52
call dword [sym.imp.KERNEL32.dll_GetTickCount]
cmp eax, dword [ebp - 8]
jbe 0x403b1d
push str.verifying_installer:__d__
push 0x4038f8
push ebx
push 0x6f
push dword [0x423f20]
call dword [sym.imp.USER32.dll_CreateDialogParamA]
mov dword [ebp - 4], eax
cmp esi, dword [0x41f4f0]
jge 0x403b36
push edi
push 0x4174f0
push dword [ebp - 0xc]
call fcn.00401efb
mov dword [ebp - 0xc], eax
add dword [0x4174e0], edi
sub esi, edi
cmp esi, ebx
jg 0x403a36
jmp 0x403b7e
lea eax, [ebp - 0x48]
push eax
call dword [sym.imp.USER32.dll_DispatchMessageA]
push 1
push ebx
push ebx
lea eax, [ebp - 0x48]
push ebx
push eax
call dword [sym.imp.USER32.dll_PeekMessageA]
test eax, eax
jne 0x403b48
jmp 0x403b1d
cmp dword [ebp - 4], ebx
je 0x403c5d
push dword [ebp - 4]
call dword [sym.imp.USER32.dll_DestroyWindow]
jmp 0x403c5d
cmp dword [ebp - 4], ebx
je 0x403b8c
push dword [ebp - 4]
call dword [sym.imp.USER32.dll_DestroyWindow]
cmp dword [0x423f2c], ebx
je 0x403c5d
cmp dword [ebp - 0x10], ebx
je 0x403bc7
push dword [0x4174e0]
call fcn.00404009
lea eax, [ebp - 8]
push 4
push eax
call fcn.00403fd7
test eax, eax
je 0x403c5d
mov eax, dword [ebp - 0xc]
cmp eax, dword [ebp - 8]
jne 0x403c5d
push dword [ebp - 0x18]
call fcn.00406437
push 0x40b448
mov esi, eax
call fcn.00401b7d
lea eax, [ebp - 0x14c]
push 0x42a400
push eax
call fcn.00406693
push ebx
push 0x4000100
push 2
push ebx
push ebx
lea eax, [ebp - 0x14c]
push 0xc0000000
push eax
call dword [sym.imp.KERNEL32.dll_CreateFileA]
cmp eax, 0xffffffff
mov dword [0x409094], eax
jne 0x403c1c
mov eax, str.Error_writing_temporary_file._Make_sure_your_temp_folder_is_valid.
jmp 0x403cb8
mov eax, dword [0x423f2c]
add eax, 0x1c
push eax
call fcn.00404009
mov ecx, dword [ebp + 8]
push dword [ebp - 0x18]
not ecx
and ecx, 4
mov dword [0x41f4f4], eax
sub eax, ecx
mov ecx, dword [ebp - 0x14]
push esi
push ebx
lea eax, [eax + ecx - 0x1c]
push 0xffffffffffffffff
mov dword [0x4174e8], eax
call fcn.00403cbf
cmp eax, dword [ebp - 0x18]
je 0x403c64
push esi
call dword [sym.imp.KERNEL32.dll_GlobalFree]
mov eax, str.The_installer_you_are_trying_to_use_is_corrupted_or_incomplete._r_nThis_could_be_the_result_of_a_damaged_disk__a_failed_download_or_a_virus._r_n_r_nYou_may_want_to_contact_the_author_of_this_installer_to_obtain_a_new_copy._r_n_r_nIt_may_be_possible_to_skip_this_check_using_the__NCRC_command_line_switch_r_n_NOT_RECOMMENDED_.
jmp 0x403cb8
test byte [ebp + 8], 2
mov dword [0x423f28], esi
je 0x403c73
or dword [esi], 8
mov eax, dword [esi]
and eax, 0x18
test byte [ebp - 0x2c], 1
mov dword [0x423f9c], eax
mov eax, dword [esi]
mov dword [0x423f30], eax
je 0x403c90
inc dword [0x423f38]
push 7
lea eax, [esi + 0x3c]
pop ecx
sub eax, 8
add dword [eax], esi
dec ecx
jne 0x403c96
mov eax, dword [0x4174e4]
push 0x38
mov dword [esi + 0x34], eax
add esi, 4
push esi
push 0x423f40
call fcn.00406640
xor eax, eax
pop edi
pop esi
pop ebx
leave
ret 4