This seems to be right everywgere But I am getting IndexError everytime at the bin

This seems to be right everywgere But I am getting IndexError everytime at the bin_bash line. but with the...

-1

#!/usr/bin/env python

import pwn

import re



gdb_puts = 0x7ffff7a649c0

gdb_system = 0x7ffff7a33440



offset = gdb_puts - gdb_system



elf = pwn.ELF('./vuln') 

p = elf.process()



prompt = p.recv()

print prompt



puts = re.findall('puts: (.*)', prompt)[0]

bin_bash = re.findall('useful_string: (.*)', prompt)[0]



print puts

print bin_bash

This gives me

Traceback (most recent call last):

  File "ape.py", line 17, in <module>

    bin_bash = re.findall('useful_string: (.*)', prompt)[0]

IndexError: list index out of range

edited Nov 18 '18 at 13:32

timgeb

50.4k116391

asked Nov 18 '18 at 13:32

Ashutosh

1

It's because your regex doesn't match. As there is no sample data in your question, we can't tell you much more.
– Thierry Lathuille
Nov 18 '18 at 13:34

What does just re.findall('useful_string: (.*)', prompt) return? If it's nothing, then you probably have a regex problem.
– connectyourcharger
Nov 18 '18 at 13:35

The field "Title" is for a short title only. A full explanation goes in the much larger field.
– usr2564301
Nov 18 '18 at 13:44

add a comment |

-1

#!/usr/bin/env python

import pwn

import re



gdb_puts = 0x7ffff7a649c0

gdb_system = 0x7ffff7a33440



offset = gdb_puts - gdb_system



elf = pwn.ELF('./vuln') 

p = elf.process()



prompt = p.recv()

print prompt



puts = re.findall('puts: (.*)', prompt)[0]

bin_bash = re.findall('useful_string: (.*)', prompt)[0]



print puts

print bin_bash

This gives me

Traceback (most recent call last):

  File "ape.py", line 17, in <module>

    bin_bash = re.findall('useful_string: (.*)', prompt)[0]

IndexError: list index out of range

edited Nov 18 '18 at 13:32

timgeb

50.4k116391

asked Nov 18 '18 at 13:32

Ashutosh

1

It's because your regex doesn't match. As there is no sample data in your question, we can't tell you much more.
– Thierry Lathuille
Nov 18 '18 at 13:34

What does just re.findall('useful_string: (.*)', prompt) return? If it's nothing, then you probably have a regex problem.
– connectyourcharger
Nov 18 '18 at 13:35

The field "Title" is for a short title only. A full explanation goes in the much larger field.
– usr2564301
Nov 18 '18 at 13:44

add a comment |

-1

#!/usr/bin/env python

import pwn

import re



gdb_puts = 0x7ffff7a649c0

gdb_system = 0x7ffff7a33440



offset = gdb_puts - gdb_system



elf = pwn.ELF('./vuln') 

p = elf.process()



prompt = p.recv()

print prompt



puts = re.findall('puts: (.*)', prompt)[0]

bin_bash = re.findall('useful_string: (.*)', prompt)[0]



print puts

print bin_bash

This gives me

Traceback (most recent call last):

  File "ape.py", line 17, in <module>

    bin_bash = re.findall('useful_string: (.*)', prompt)[0]

IndexError: list index out of range

edited Nov 18 '18 at 13:32

timgeb

50.4k116391

asked Nov 18 '18 at 13:32

Ashutosh

#!/usr/bin/env python

import pwn

import re



gdb_puts = 0x7ffff7a649c0

gdb_system = 0x7ffff7a33440



offset = gdb_puts - gdb_system



elf = pwn.ELF('./vuln') 

p = elf.process()



prompt = p.recv()

print prompt



puts = re.findall('puts: (.*)', prompt)[0]

bin_bash = re.findall('useful_string: (.*)', prompt)[0]



print puts

print bin_bash

This gives me

Traceback (most recent call last):

  File "ape.py", line 17, in <module>

    bin_bash = re.findall('useful_string: (.*)', prompt)[0]

IndexError: list index out of range

python binary buffer-overflow index-error

edited Nov 18 '18 at 13:32

timgeb

50.4k116391

asked Nov 18 '18 at 13:32

Ashutosh

edited Nov 18 '18 at 13:32

timgeb

50.4k116391

asked Nov 18 '18 at 13:32

Ashutosh

edited Nov 18 '18 at 13:32

timgeb

50.4k116391

edited Nov 18 '18 at 13:32

timgeb

50.4k116391

edited Nov 18 '18 at 13:32

timgeb

50.4k116391

asked Nov 18 '18 at 13:32

Ashutosh

asked Nov 18 '18 at 13:32

Ashutosh

asked Nov 18 '18 at 13:32

Ashutosh

1

It's because your regex doesn't match. As there is no sample data in your question, we can't tell you much more.
– Thierry Lathuille
Nov 18 '18 at 13:34

What does just re.findall('useful_string: (.*)', prompt) return? If it's nothing, then you probably have a regex problem.
– connectyourcharger
Nov 18 '18 at 13:35

The field "Title" is for a short title only. A full explanation goes in the much larger field.
– usr2564301
Nov 18 '18 at 13:44

add a comment |

1

It's because your regex doesn't match. As there is no sample data in your question, we can't tell you much more.
– Thierry Lathuille
Nov 18 '18 at 13:34

What does just re.findall('useful_string: (.*)', prompt) return? If it's nothing, then you probably have a regex problem.
– connectyourcharger
Nov 18 '18 at 13:35

The field "Title" is for a short title only. A full explanation goes in the much larger field.
– usr2564301
Nov 18 '18 at 13:44

It's because your regex doesn't match. As there is no sample data in your question, we can't tell you much more.
– Thierry Lathuille
Nov 18 '18 at 13:34

What does just re.findall('useful_string: (.*)', prompt) return? If it's nothing, then you probably have a regex problem.
– connectyourcharger
Nov 18 '18 at 13:35

The field "Title" is for a short title only. A full explanation goes in the much larger field.
– usr2564301
Nov 18 '18 at 13:44

add a comment |

1 Answer
1

active

oldest

votes

If you get a list index out of range on [0] then the list is empty, and contains no value. You can check if a list has any values in it using not, e.g.:

my_list = function_that_returns_a_list()

if not my_list:

    print("Your list is empty")

else:

    print(my_list[0])

Verify that your re.findall('useful_string: (.*)', prompt) isn't returning an empty list.

edited Nov 18 '18 at 13:40

answered Nov 18 '18 at 13:36

Moralous

71111

You're probably right I've a C code and compiled binary file in the same directory which has "useful_string" let me add my C code so you can have a better look at it.
– Ashutosh
Nov 19 '18 at 14:17

I'm attaching the google drive link //drive.google.com/open?id=1srPd4dhrwUkhtUPzr5FtW-ikU2ULAeQ7
– Ashutosh
Nov 19 '18 at 14:23

I don't know C well enough to see what data that will parse to your Python script. You'll have to make a different question with different tags - I've answered this one as best I can.
– Moralous
Nov 19 '18 at 21:06

add a comment |

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1 Answer
1

active

oldest

votes

1 Answer
1

active

oldest

votes

If you get a list index out of range on [0] then the list is empty, and contains no value. You can check if a list has any values in it using not, e.g.:

my_list = function_that_returns_a_list()

if not my_list:

    print("Your list is empty")

else:

    print(my_list[0])

Verify that your re.findall('useful_string: (.*)', prompt) isn't returning an empty list.

edited Nov 18 '18 at 13:40

answered Nov 18 '18 at 13:36

Moralous

71111

You're probably right I've a C code and compiled binary file in the same directory which has "useful_string" let me add my C code so you can have a better look at it.
– Ashutosh
Nov 19 '18 at 14:17

I'm attaching the google drive link //drive.google.com/open?id=1srPd4dhrwUkhtUPzr5FtW-ikU2ULAeQ7
– Ashutosh
Nov 19 '18 at 14:23

I don't know C well enough to see what data that will parse to your Python script. You'll have to make a different question with different tags - I've answered this one as best I can.
– Moralous
Nov 19 '18 at 21:06

add a comment |

If you get a list index out of range on [0] then the list is empty, and contains no value. You can check if a list has any values in it using not, e.g.:

my_list = function_that_returns_a_list()

if not my_list:

    print("Your list is empty")

else:

    print(my_list[0])

Verify that your re.findall('useful_string: (.*)', prompt) isn't returning an empty list.

edited Nov 18 '18 at 13:40

answered Nov 18 '18 at 13:36

Moralous

71111

You're probably right I've a C code and compiled binary file in the same directory which has "useful_string" let me add my C code so you can have a better look at it.
– Ashutosh
Nov 19 '18 at 14:17

I'm attaching the google drive link //drive.google.com/open?id=1srPd4dhrwUkhtUPzr5FtW-ikU2ULAeQ7
– Ashutosh
Nov 19 '18 at 14:23

I don't know C well enough to see what data that will parse to your Python script. You'll have to make a different question with different tags - I've answered this one as best I can.
– Moralous
Nov 19 '18 at 21:06

add a comment |

If you get a list index out of range on [0] then the list is empty, and contains no value. You can check if a list has any values in it using not, e.g.:

my_list = function_that_returns_a_list()

if not my_list:

    print("Your list is empty")

else:

    print(my_list[0])

Verify that your re.findall('useful_string: (.*)', prompt) isn't returning an empty list.

edited Nov 18 '18 at 13:40

answered Nov 18 '18 at 13:36

Moralous

71111

If you get a list index out of range on [0] then the list is empty, and contains no value. You can check if a list has any values in it using not, e.g.:

my_list = function_that_returns_a_list()

if not my_list:

    print("Your list is empty")

else:

    print(my_list[0])

Verify that your re.findall('useful_string: (.*)', prompt) isn't returning an empty list.

edited Nov 18 '18 at 13:40

answered Nov 18 '18 at 13:36

Moralous

71111

edited Nov 18 '18 at 13:40

answered Nov 18 '18 at 13:36

Moralous

71111

answered Nov 18 '18 at 13:36

Moralous

71111

answered Nov 18 '18 at 13:36

Moralous

71111

You're probably right I've a C code and compiled binary file in the same directory which has "useful_string" let me add my C code so you can have a better look at it.
– Ashutosh
Nov 19 '18 at 14:17

I'm attaching the google drive link //drive.google.com/open?id=1srPd4dhrwUkhtUPzr5FtW-ikU2ULAeQ7
– Ashutosh
Nov 19 '18 at 14:23

I don't know C well enough to see what data that will parse to your Python script. You'll have to make a different question with different tags - I've answered this one as best I can.
– Moralous
Nov 19 '18 at 21:06

add a comment |

You're probably right I've a C code and compiled binary file in the same directory which has "useful_string" let me add my C code so you can have a better look at it.
– Ashutosh
Nov 19 '18 at 14:17

I'm attaching the google drive link //drive.google.com/open?id=1srPd4dhrwUkhtUPzr5FtW-ikU2ULAeQ7
– Ashutosh
Nov 19 '18 at 14:23

I don't know C well enough to see what data that will parse to your Python script. You'll have to make a different question with different tags - I've answered this one as best I can.
– Moralous
Nov 19 '18 at 21:06

You're probably right I've a C code and compiled binary file in the same directory which has "useful_string" let me add my C code so you can have a better look at it.
– Ashutosh
Nov 19 '18 at 14:17

I'm attaching the google drive link //drive.google.com/open?id=1srPd4dhrwUkhtUPzr5FtW-ikU2ULAeQ7
– Ashutosh
Nov 19 '18 at 14:23

I don't know C well enough to see what data that will parse to your Python script. You'll have to make a different question with different tags - I've answered this one as best I can.
– Moralous
Nov 19 '18 at 21:06

add a comment |

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