Function at 0x402c31
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, 0x435c00
push 0x400
push esi
mov edi, eax
push dword [0x42f020]
add edi, 0x3e8
call dword [sym.imp.KERNEL32.dll_GetModuleFileNameA]
push 3
push 0x80000000
push esi
call fcn.00405648
mov ebx, eax
cmp ebx, 0xffffffff
mov dword [ebp - 0x10], ebx
mov dword [0x40901c], ebx
jne 0x402c91
mov eax, str.Error_launching_installer
jmp 0x402eb0
push esi
call fcn.004054cb
push 0
push ebx
call dword [sym.imp.KERNEL32.dll_GetFileSize]
test eax, eax
mov dword [0x428c58], eax
mov esi, eax
jle 0x402dd8
mov eax, dword [0x42f02c]
mov ebx, esi
neg eax
sbb eax, eax
and eax, 0x7e00
add eax, 0x200
cmp esi, eax
jl 0x402cca
mov ebx, eax
push ebx
push 0x420c58
call fcn.004030e3
test eax, eax
je 0x402e43
xor eax, eax
cmp dword [0x42f02c], eax
jne 0x402d66
push 0x1c
lea eax, [ebp - 0x2c]
push 0x420c58
push eax
call fcn.00405628
mov ecx, dword [ebp - 0x2c]
test ecx, 0xfffffff0
jne 0x402da0
cmp dword [ebp - 0x28], 0xdeadbeef
jne 0x402da0
cmp dword [ebp - 0x1c], 0x74736e49
jne 0x402da0
cmp dword [ebp - 0x20], 0x74666f73
jne 0x402da0
cmp dword [ebp - 0x24], 0x6c6c754e
jne 0x402da0
mov eax, dword [ebp - 0x14]
cmp eax, esi
jg 0x402e3c
or dword [ebp + 8], ecx
mov edx, dword [0x414c50]
test byte [ebp + 8], 8
mov dword [0x42f02c], edx
jne 0x402d58
test byte [ebp + 8], 4
jne 0x402dc9
inc dword [ebp - 8]
lea esi, [eax - 4]
cmp ebx, esi
jbe 0x402da0
mov ebx, esi
jmp 0x402da0
test byte [ebp + 8], 2
jne 0x402da0
cmp dword [ebp - 4], eax
je 0x402d79
push eax
call fcn.00405cbb
jmp 0x402da0
call dword [sym.imp.KERNEL32.dll_GetTickCount]
cmp eax, edi
jbe 0x402da0
push str.verifying_installer:__d__
push 0x402ba5
push 0
push 0x6f
push dword [0x42f020]
call dword [sym.imp.USER32.dll_CreateDialogParamA]
mov dword [ebp - 4], eax
cmp esi, dword [0x428c58]
jge 0x402db9
push ebx
push 0x420c58
push dword [ebp - 0xc]
call fcn.00405cee
mov dword [ebp - 0xc], eax
add dword [0x414c50], ebx
sub esi, ebx
test esi, esi
jg 0x402caf
cmp dword [ebp - 4], 0
je 0x402dd8
push dword [ebp - 4]
call dword [sym.imp.USER32.dll_DestroyWindow]
xor edi, edi
cmp dword [0x42f02c], edi
je 0x402e3c
cmp dword [ebp - 8], edi
je 0x402e09
push dword [0x414c50]
call fcn.00403115
lea eax, [ebp - 8]
push 4
push eax
call fcn.004030e3
test eax, eax
je 0x402e3c
mov eax, dword [ebp - 0xc]
cmp eax, dword [ebp - 8]
jne 0x402e3c
push dword [ebp - 0x18]
push 0x40
call dword [sym.imp.KERNEL32.dll_GlobalAlloc]
mov esi, eax
mov eax, dword [0x42f02c]
add eax, 0x1c
push eax
call fcn.00403115
push dword [ebp - 0x18]
push esi
push edi
push 0xffffffffffffffff
call fcn.00402eb7
cmp eax, dword [ebp - 0x18]
je 0x402e54
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 0x402eb0
cmp dword [ebp - 4], 0
je 0x402e3c
push dword [ebp - 4]
call dword [sym.imp.USER32.dll_DestroyWindow]
jmp 0x402e3c
test byte [ebp + 8], 2
mov dword [0x42f028], esi
je 0x402e63
or dword [esi], 8
mov eax, dword [esi]
and eax, 0x18
test byte [ebp - 0x2c], 1
mov dword [0x42f0c0], eax
mov eax, dword [esi]
mov dword [0x42f030], eax
je 0x402e80
inc dword [0x42f034]
push 8
lea eax, [esi + 0x44]
pop ecx
sub eax, 8
add dword [eax], esi
dec ecx
jne 0x402e86
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 0x42f040
call fcn.00405628
xor eax, eax
pop edi
pop esi
pop ebx
leave
ret 4