Reading Struct from Resoureces

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Nameless

Joined: 30 Apr 2010
Posts: 95

Nameless 22 Aug 2010, 09:36

i have a record in resources that has 2 variables, when i try to read it it only displays the first item and not the second. any idea whats the problem?

Code:


struct USERINFORMATION_STRUCT
  szUsername              dw MAX_PATH dup (?)
 szPassword              dw MAX_PATH dup (?)
ends


invoke           GetModuleHandle,0
           mov                     [handle], eax
               invoke          FindResource, NULL, RC_STR0, RT_RCDATA
              mov                     [hRes], eax
         invoke          LoadResource, NULL, [hRes]
          mov                     [hReturn], eax
              invoke          SizeofResource, NULL, [hRes]
                mov                     [sRes], eax
         invoke          LockResource, [hReturn]
             mov                     [pRes], eax
         invoke          RtlMoveMemory, Settings, [pRes], [sRes]
             invoke          FreeResource, [hReturn]

         invoke  MessageBox, 0, addr Settings.szUsername, "szUsername", MB_OK
              invoke  MessageBox, 0, addr Settings.szPassword, "szPassword", MB_OK

i also tried this

Code:

              push    esi
         mov             esi, Settings
               invoke  MessageBox, 0, addr esi+USERINFORMATION_STRUCT.szUsername, "szUsername", MB_OK
            invoke  MessageBox, 0, addr esi+USERINFORMATION_STRUCT.szPassword, "szPassword", MB_OK

22 Aug 2010, 09:36

LocoDelAssembly
Your code has a bug

Joined: 06 May 2005
Posts: 4624
Location: Argentina

LocoDelAssembly 22 Aug 2010, 13:36

How are you storing that structure in the resource section? If you start showing the password first the problem also happens? (Just checking the program is not crashing for some reason when accessing the username)

22 Aug 2010, 13:36

Nameless

Joined: 30 Apr 2010
Posts: 95

Nameless 22 Aug 2010, 17:40

i store them from a delphi application, and no, no matter what i did, only username shows, if i tried to display password then username, password is empty and username shows.

im porting the code from my delphi code, and in delphi it works fine, i guess its something in dealing with the struct in fasm

22 Aug 2010, 17:40

LocoDelAssembly
Your code has a bug

Joined: 06 May 2005
Posts: 4624
Location: Argentina

LocoDelAssembly 22 Aug 2010, 17:56

But are Delphi strings UNICODE? Are you using win32a*.inc or win32w*.inc?

For a quick test change dw to db, recompile and run.

22 Aug 2010, 17:56

Yardman

Joined: 12 Apr 2005
Posts: 244
Location: US

Yardman 22 Aug 2010, 17:59

[ Post removed by author. ]

Last edited by Yardman on 04 Apr 2012, 03:55; edited 1 time in total

22 Aug 2010, 17:59

Nameless

Joined: 30 Apr 2010
Posts: 95

Nameless 22 Aug 2010, 20:56

yea, username was always "john" and password was "123456"

22 Aug 2010, 20:56

baldr

Joined: 19 Mar 2008
Posts: 1651

baldr 25 Aug 2010, 19:04

Nameless,

Yardman has a point: did you ensure that szUsername and szPassword members in that resource are exactly MAX_PATH words in size? It seems that you didn't define that resource as USERINFORMATION_STRUCT <"john", 0>, <"123456", 0> — that won't compile unless you change dw to du.

25 Aug 2010, 19:04

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