Function at 0x402c3e
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]
mov dword [ebp - 0xc], esi
mov dword [ebp - 8], esi
mov esi, 0x7f6000
push 0x2000
push esi
mov edi, eax
push dword [0x7c7760]
add edi, 0x3e8
call dword [sym.imp.KERNEL32.dll_GetModuleFileNameA]
push 3
push 0x80000000
push esi
call fcn.00405692
mov ebx, eax
cmp ebx, 0xffffffff
mov dword [ebp - 0x10], ebx
mov dword [0x40901c], ebx
jne 0x402c9e
mov eax, str.Error_launching_installer
jmp 0x402ebd
push esi
call fcn.00405515
push 0
push ebx
call dword [sym.imp.KERNEL32.dll_GetFileSize]
test eax, eax
mov dword [0x7a6530], eax
mov esi, eax
jle 0x402de5
mov eax, dword [0x7c776c]
mov ebx, esi
neg eax
sbb eax, eax
and eax, 0x7e00
add eax, 0x200
cmp esi, eax
jl 0x402cd7
mov ebx, eax
push ebx
push 0x79e530
call fcn.004030d4
test eax, eax
je 0x402e50
xor eax, eax
cmp dword [0x7c776c], eax
jne 0x402d73
push 0x1c
lea eax, [ebp - 0x2c]
push 0x79e530
push eax
call fcn.00405672
mov ecx, dword [ebp - 0x2c]
test ecx, 0xfffffff0
jne 0x402dad
cmp dword [ebp - 0x28], 0xdeadbeef
jne 0x402dad
cmp dword [ebp - 0x1c], 0x74736e49
jne 0x402dad
cmp dword [ebp - 0x20], 0x74666f73
jne 0x402dad
cmp dword [ebp - 0x24], 0x6c6c754e
jne 0x402dad
mov eax, dword [ebp - 0x14]
cmp eax, esi
jg 0x402e49
or dword [ebp + 8], ecx
mov edx, dword [0x792528]
test byte [ebp + 8], 8
mov dword [0x7c776c], edx
jne 0x402d65
test byte [ebp + 8], 4
jne 0x402dd6
inc dword [ebp - 8]
lea esi, [eax - 4]
cmp ebx, esi
jbe 0x402dad
mov ebx, esi
jmp 0x402dad
test byte [ebp + 8], 2
jne 0x402dad
cmp dword [ebp - 4], eax
je 0x402d86
push eax
call fcn.00405cfe
jmp 0x402dad
call dword [sym.imp.KERNEL32.dll_GetTickCount]
cmp eax, edi
jbe 0x402dad
push str.verifying_installer:__d__
push 0x402bb2
push 0
push 0x6f
push dword [0x7c7760]
call dword [sym.imp.USER32.dll_CreateDialogParamA]
mov dword [ebp - 4], eax
cmp esi, dword [0x7a6530]
jge 0x402dc6
push ebx
push 0x79e530
push dword [ebp - 0xc]
call fcn.00405d31
mov dword [ebp - 0xc], eax
add dword [0x792528], ebx
sub esi, ebx
test esi, esi
jg 0x402cbc
cmp dword [ebp - 4], 0
je 0x402de5
push dword [ebp - 4]
call dword [sym.imp.USER32.dll_DestroyWindow]
xor edi, edi
cmp dword [0x7c776c], edi
je 0x402e49
cmp dword [ebp - 8], edi
je 0x402e16
push dword [0x792528]
call fcn.00403106
lea eax, [ebp - 8]
push 4
push eax
call fcn.004030d4
test eax, eax
je 0x402e49
mov eax, dword [ebp - 0xc]
cmp eax, dword [ebp - 8]
jne 0x402e49
push dword [ebp - 0x18]
push 0x40
call dword [sym.imp.KERNEL32.dll_GlobalAlloc]
mov esi, eax
mov eax, dword [0x7c776c]
add eax, 0x1c
push eax
call fcn.00403106
push dword [ebp - 0x18]
push esi
push edi
push 0xffffffffffffffff
call fcn.00402ec4
cmp eax, dword [ebp - 0x18]
je 0x402e61
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 0x402ebd
cmp dword [ebp - 4], 0
je 0x402e49
push dword [ebp - 4]
call dword [sym.imp.USER32.dll_DestroyWindow]
jmp 0x402e49
test byte [ebp + 8], 2
mov dword [0x7c7768], esi
je 0x402e70
or dword [esi], 8
mov eax, dword [esi]
and eax, 0x18
test byte [ebp - 0x2c], 1
mov dword [0x7c7800], eax
mov eax, dword [esi]
mov dword [0x7c7770], eax
je 0x402e8d
inc dword [0x7c7774]
push 8
lea eax, [esi + 0x44]
pop ecx
sub eax, 8
add dword [eax], esi
dec ecx
jne 0x402e93
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 0x7c7780
call fcn.00405672
xor eax, eax
pop edi
pop esi
pop ebx
leave
ret 4