Any working Ace Extrator on C++ ???

[CodeExplorer]

Any working Ace Extrator on C++ ???

https://github.com/ipr/qXpkLib https://github.com/ipr/qXpkLib/tree/master/xadACE missing the Extract Entry method!

Quote

bool CUnACE::extractEntry(CAnsiFile &archive, AceEntry *pEntry)
{
}

ftp://madmike.ml/Downloads/Software/Archivators/Ace32/UNACESRC/UNACE.C this is in C - DOS and I don't know how to open/compile it

https://github.com/droe/acefile/blob/master/acefile.py python

Generic tut https://www.roe.ch/acefile

Already tried:
 

Quote

 

bool CUnACE::extractEntry(CAnsiFile &archive, AceEntry *pEntry)
{
    // For decompressing comments:

    size_t len = pEntry->m_header.PSIZE;
    archive.Seek(pEntry->m_header.dataoffset, SEEK_SET);

    int8_t *buf = new int8_t[len];
    if (archive.Read(buf, len) == false)
    {
        throw std::exception("Failed reading data!");
    }

    m_Decompress.init_unace();
    //m_Decompress.comm = (char *)pEntry->m_header.COMM;
    //m_Decompress.comm_cpr_size = pEntry->m_header.COMM_SIZE;
    //m_Decompress.dcpr_comm(pEntry->m_header.COMM_SIZE);

    m_Decompress.fhead = pEntry->m_header;

    memcpy(m_Decompress.aname, "D:\\Winace.ace", sizeof("D:\\Winace.ace"));
    m_Decompress.open_archive(false);
    m_Decompress.dcpr_init_file();

    

    int rd = 0;
    //m_Decompress.dcpr_adds_blk(m_Decompress.buf_wr, len);
    int8_t *bufwrite = new int8_t[2048];

    int archan, wrhan;

    //wrhan = create_dest_file("D:\\file.exe", (int) m_Decompress.fhead.ATTR))<0;
 
    while (rd = m_Decompress.dcpr_adds_blk(buf, 2048))
   {
    char test = bufwrite[0];
    printf("%c", test);
/*

      if (write(wrhan, bufwrite, rd) != rd)       // write block
      {                         
         printf("\nWrite error\n");
         f_err = ERR_WRITE;
      }
*/      
   }

    close(wrhan);

return false;
}

 

Anyway: it doesn't work!
 

[ToMKoL]

Don't remember from where I got it but it has C example. Maybe it will be usefull.

unacedll v2.6.zip

[CodeExplorer]

4 hours ago, ToMKoL said:

Don't remember from where I got it but it has C example. Maybe it will be usefull.

Thanks for trying to help me. I don't wanna use Third Party Libraries.
Plus is using same UNACEV2.DLL which has security problems.
 

[kao]

You don't have much choice there. ACE was a proprietary algorithm and therefore there are very few implementations available. You already found most of them.

 

[Benjamin]

On 8/27/2019 at 6:24 PM, CodeExplorer said:

Thanks for trying to help me. I don't wanna use Third Party Libraries

If you don't wanna use 3rd party libraries then your options would be very limited. Maybe you should consider third party tools/libs where the code is not obfuscated (thereby allowing you to examine it if needed)?

[Progman]

UNACE.c looks easily compilable and usable from C++, could call main, or better yet the functions main uses.  Probably you comment out all of the printf statements.

[Teddy Rogers]

What is the intention for wanting a WinACE extractor in C++?

Ted.

[CodeExplorer]

1 hour ago, Teddy Rogers said:

What is the intention for wanting a WinACE extractor in C++?

Ted.

I want to solve this security vulnerability https://forum.tuts4you.com/topic/41140-winrar-patches-19-year-old-security-vulnerability-that-put-millions-at-risk
 

[Kurapica]

you can do what malware kids do when Microsoft for example pushes a new update, they diff before and after the patch to see where changes happened

It's boring but the only way when no other way is available

 

[kao]

@Kura: There's no need to diff anything, everything is described in a very detailed fashion: https://research.checkpoint.com/extracting-code-execution-from-winrar/

Fix could be a simple in-place patch of unacev2.dll or maybe a small amount of code added to some codecave.

 

[Python]

16 hours ago, CodeExplorer said:

I want to solve this security vulnerability https://forum.tuts4you.com/topic/41140-winrar-patches-19-year-old-security-vulnerability-that-put-millions-at-risk
 

Winrar guys already released a fix, didn't they? As Kao mentioned, several articles (and FUD stories also) came out on that topic at that time 😄 Personally I would not waste too much of time on WinACE but it's just me.

[kao]

1 hour ago, Python said:

Winrar guys already released a fix, didn't they?

Nope, they dropped ACE support instead.

 

[CodeExplorer]

I would waste but only some small time on this.
By the way the problems comes when I try to decompress files:
files information seems to be ok.
Another problem is that HEAD_CRC seems to be corrupt or I am doing something wrong:

    int rd = (m_archiveHeader.header.HEAD_SIZE > size_headrdb) ? size_headrdb : m_archiveHeader.header.HEAD_SIZE;

    // count header CRC upto current position
    m_Crc.updatecrc((uint8_t *)m_ReadBuffer.GetAtCurrent(),
        (size_t)m_archiveHeader.header.HEAD_SIZE);

    uint32_t f1 = m_archiveHeader.header.HEAD_CRC;
    uint32_t f2 = m_Crc.crc();

    if (!(m_archiveHeader.header.HEAD_CRC == (m_Crc.crc() & 0xffff)))
      printf("\nError: archive is broken\n");

 

Edited August 30, 2019 by CodeExplorer

[Python]

On 8/30/2019 at 7:33 AM, kao said:

Nope, they dropped ACE support instead

Oops.. My mistake. You are right. I rarely if ever needed to extract ACE files for the past several years...