Function at 0x402c57
Capabilities:
Check for time delay via gettickcount
Get file size

Disassembly:
push ebp
mov ebp, esp
sub esp, 0x48
push ebx
push esi
xor esi, esi
push edi
mov dword [ebp - 4], esi
call dword [sym.imp.KERNEL32.dll_GetTickCount]
mov dword [ebp - 0xc], esi
mov dword [ebp - 8], esi
mov esi, 0x7a8c00
push 0x400
push esi
mov edi, eax
push dword [0x7a2b60]
add edi, 0x3e8
call dword [sym.imp.KERNEL32.dll_GetModuleFileNameA]
push 3
push 0x80000000
push esi
call fcn.0040562d
mov ebx, eax
cmp ebx, 0xffffffff
mov dword [ebp - 0x10], ebx
mov dword [0x40901c], ebx
jne 0x402cb7
mov eax, str.Error_launching_installer
jmp 0x402eee
push esi
call fcn.004054b5
push 0
push ebx
call dword [sym.imp.KERNEL32.dll_GetFileSize]
test eax, eax
mov dword [0x79d928], eax
mov esi, eax
jle 0x402e2a
mov eax, dword [0x7a2b6c]
mov ebx, esi
neg eax
sbb eax, eax
and eax, 0x7e00
add eax, 0x200
cmp esi, eax
jl 0x402cf0
mov ebx, eax
push ebx
push 0x795928
call fcn.00403105
test eax, eax
je 0x402e0a
xor eax, eax
cmp dword [0x7a2b6c], eax
jne 0x402d8c
push 0x1c
lea eax, [ebp - 0x2c]
push 0x795928
push eax
call fcn.0040560d
mov ecx, dword [ebp - 0x2c]
test ecx, 0xfffffff0
jne 0x402dbe
cmp dword [ebp - 0x28], 0xdeadbeef
jne 0x402dbe
cmp dword [ebp - 0x1c], 0x74736e49
jne 0x402dbe
cmp dword [ebp - 0x20], 0x74666f73
jne 0x402dbe
cmp dword [ebp - 0x24], 0x6c6c754e
jne 0x402dbe
mov eax, dword [ebp - 0x14]
cmp eax, esi
jg 0x402e8b
or dword [ebp + 8], ecx
mov edx, dword [0x789920]
test byte [ebp + 8], 8
mov dword [0x7a2b6c], edx
jne 0x402d7e
test byte [ebp + 8], 4
jne 0x402e1b
inc dword [ebp - 8]
lea esi, [eax - 4]
cmp ebx, esi
jbe 0x402dbe
mov ebx, esi
jmp 0x402dbe
test byte [ebp + 8], 2
jne 0x402dbe
cmp dword [ebp - 4], eax
jne 0x402df5
call dword [sym.imp.KERNEL32.dll_GetTickCount]
cmp eax, edi
jbe 0x402dbe
push str.verifying_installer:__d__
push 0x402bcb
push 0
push 0x6f
push dword [0x7a2b60]
call dword [sym.imp.USER32.dll_CreateDialogParamA]
mov dword [ebp - 4], eax
cmp esi, dword [0x79d928]
jge 0x402dd7
push ebx
push 0x795928
push dword [ebp - 0xc]
call fcn.00405c87
mov dword [ebp - 0xc], eax
add dword [0x789920], ebx
sub esi, ebx
test esi, esi
jg 0x402cd5
jmp 0x402e1b
lea eax, [ebp - 0x48]
push eax
call dword [sym.imp.USER32.dll_DispatchMessageA]
xor eax, eax
push 1
push eax
push eax
push eax
lea eax, [ebp - 0x48]
push eax
call dword [sym.imp.USER32.dll_PeekMessageA]
test eax, eax
jne 0x402de9
jmp 0x402dbe
cmp dword [ebp - 4], 0
je 0x402e8b
push dword [ebp - 4]
call dword [sym.imp.USER32.dll_DestroyWindow]
jmp 0x402e8b
cmp dword [ebp - 4], 0
je 0x402e2a
push dword [ebp - 4]
call dword [sym.imp.USER32.dll_DestroyWindow]
xor edi, edi
cmp dword [0x7a2b6c], edi
je 0x402e8b
cmp dword [ebp - 8], edi
je 0x402e5b
push dword [0x789920]
call fcn.00403137
lea eax, [ebp - 8]
push 4
push eax
call fcn.00403105
test eax, eax
je 0x402e8b
mov eax, dword [ebp - 0xc]
cmp eax, dword [ebp - 8]
jne 0x402e8b
push dword [ebp - 0x18]
call fcn.004052ba
mov esi, eax
mov eax, dword [0x7a2b6c]
add eax, 0x1c
push eax
call fcn.00403137
push dword [ebp - 0x18]
push esi
push edi
push 0xffffffffffffffff
call fcn.00402ef5
cmp eax, dword [ebp - 0x18]
je 0x402e92
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 0x402eee
test byte [ebp + 8], 2
mov dword [0x7a2b68], esi
je 0x402ea1
or dword [esi], 8
mov eax, dword [esi]
and eax, 0x18
test byte [ebp - 0x2c], 1
mov dword [0x7a2c00], eax
mov eax, dword [esi]
mov dword [0x7a2b70], eax
je 0x402ebe
inc dword [0x7a2b74]
push 8
lea eax, [esi + 0x44]
pop ecx
sub eax, 8
add dword [eax], esi
dec ecx
jne 0x402ec4
push 1
push edi
push edi
push dword [ebp - 0x10]
call dword [sym.imp.KERNEL32.dll_SetFilePointer]
mov dword [esi + 0x3c], eax
add esi, 4
push 0x40
push esi
push 0x7a2b80
call fcn.0040560d
xor eax, eax
pop edi
pop esi
pop ebx
leave
ret 4