Сначала пропатчить smali исходного проекта примерно такой командой:
grep -rlE 'invoke-virtual ({[pv][0-9]+, [pv][0-9]+, [pv][0-9]+}), Landroid\/content\/pm\/PackageManager;->getPackageInfo\(Ljava\/lang\/String;I\)Landroid\/content\/pm\/PackageInfo;' |xargs perl -pi -e 's/invoke-virtual (\{[pv][0-9]+, [pv][0-9]+, [pv][0-9]+}), Landroid\/content\/pm\/PackageManager;->getPackageInfo\(Ljava\/lang\/String;I\)Landroid\/content\/pm\/PackageInfo;/invoke-static \1,LSignatures;->getPackageInfo\(Landroid\/content\/pm\/PackageManager;Ljava\/lang\/String;I\)Landroid\/content\/pm\/PackageInfo;/g'
Затем создать класс smali/Signatures.smali вида:
.class public LSignatures;
.super Ljava/lang/Object;
.source "Signatures.java"
# static fields
.field public static SIGNATURES:Ljava/util/Map;
.annotation system Ldalvik/annotation/Signature;
value = {
"Ljava/util/Map<",
"Ljava/lang/String;",
"[",
"Ljava/lang/String;",
">;"
}
.end annotation
.end field
# direct methods
.method static constructor <clinit>()V
.locals 3
.line 11
new-instance v0, Ljava/util/HashMap;
invoke-direct {v0}, Ljava/util/HashMap;-><init>()V
sput-object v0, LSignatures;->SIGNATURES:Ljava/util/Map;
.line 14
sget-object v0, LSignatures;->SIGNATURES:Ljava/util/Map;
const-string v1, "com.vkontakte.kakegotam.paket.zovut"
const-string v2, "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"
filled-new-array {v2}, [Ljava/lang/String;
move-result-object v2
invoke-interface {v0, v1, v2}, Ljava/util/Map;->put(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;
.line 16
return-void
.end method
.method public constructor <init>()V
.locals 0
.line 9
invoke-direct {p0}, Ljava/lang/Object;-><init>()V
return-void
.end method
.method public static getPackageInfo(Landroid/content/pm/PackageManager;Ljava/lang/String;I)Landroid/content/pm/PackageInfo;
.locals 6
.param p0, "pm" # Landroid/content/pm/PackageManager;
.param p1, "name" # Ljava/lang/String;
.param p2, "flags" # I
.annotation system Ldalvik/annotation/Throws;
value = {
Landroid/content/pm/PackageManager$NameNotFoundException;
}
.end annotation
.line 30
invoke-virtual {p0, p1, p2}, Landroid/content/pm/PackageManager;->getPackageInfo(Ljava/lang/String;I)Landroid/content/pm/PackageInfo;
move-result-object v0
.line 31
.local v0, "info":Landroid/content/pm/PackageInfo;
const-string v1, "S-trace"
new-instance v2, Ljava/lang/StringBuilder;
invoke-direct {v2}, Ljava/lang/StringBuilder;-><init>()V
const-string v3, "getPackageInfo("
invoke-virtual {v2, v3}, Ljava/lang/StringBuilder;->append(Ljava/lang/String;)Ljava/lang/StringBuilder;
invoke-virtual {v2, p1}, Ljava/lang/StringBuilder;->append(Ljava/lang/String;)Ljava/lang/StringBuilder;
const-string v3, ", "
invoke-virtual {v2, v3}, Ljava/lang/StringBuilder;->append(Ljava/lang/String;)Ljava/lang/StringBuilder;
invoke-virtual {v2, p2}, Ljava/lang/StringBuilder;->append(I)Ljava/lang/StringBuilder;
const-string v3, ")"
invoke-virtual {v2, v3}, Ljava/lang/StringBuilder;->append(Ljava/lang/String;)Ljava/lang/StringBuilder;
invoke-virtual {v2}, Ljava/lang/StringBuilder;->toString()Ljava/lang/String;
move-result-object v2
invoke-static {v1, v2}, Landroid/util/Log;->i(Ljava/lang/String;Ljava/lang/String;)I
.line 32
sget-object v1, LSignatures;->SIGNATURES:Ljava/util/Map;
invoke-interface {v1, p1}, Ljava/util/Map;->containsKey(Ljava/lang/Object;)Z
move-result v1
if-eqz v1, :cond_1
.line 33
sget-object v1, LSignatures;->SIGNATURES:Ljava/util/Map;
invoke-interface {v1, p1}, Ljava/util/Map;->get(Ljava/lang/Object;)Ljava/lang/Object;
move-result-object v1
check-cast v1, [Ljava/lang/String;
.line 35
.local v1, "hexSignatures":[Ljava/lang/String;
if-eqz v1, :cond_1
.line 36
array-length v2, v1
new-array v2, v2, [Landroid/content/pm/Signature;
.line 37
.local v2, "signatures":[Landroid/content/pm/Signature;
const/4 v3, 0x0
.line 37
.local v3, "i":I
:goto_0
array-length v4, v1
if-ge v3, v4, :cond_0
.line 38
new-instance v4, Landroid/content/pm/Signature;
aget-object v5, v1, v3
invoke-static {v5}, LSignatures;->hexStringToByteArray(Ljava/lang/String;)[B
move-result-object v5
invoke-direct {v4, v5}, Landroid/content/pm/Signature;-><init>([B)V
aput-object v4, v2, v3
.line 37
add-int/lit8 v3, v3, 0x1
goto :goto_0
.line 40
.end local v3 # "i":I
:cond_0
iput-object v2, v0, Landroid/content/pm/PackageInfo;->signatures:[Landroid/content/pm/Signature;
.line 43
.end local v1 # "hexSignatures":[Ljava/lang/String;
.end local v2 # "signatures":[Landroid/content/pm/Signature;
:cond_1
return-object v0
.end method
.method public static hexStringToByteArray(Ljava/lang/String;)[B
.locals 7
.param p0, "s" # Ljava/lang/String;
.line 19
invoke-virtual {p0}, Ljava/lang/String;->length()I
move-result v0
.line 20
.local v0, "len":I
div-int/lit8 v1, v0, 0x2
new-array v1, v1, [B
.line 22
.local v1, "data":[B
const/4 v2, 0x0
.line 22
.local v2, "i":I
:goto_0
if-ge v2, v0, :cond_0
.line 23
div-int/lit8 v3, v2, 0x2
invoke-virtual {p0, v2}, Ljava/lang/String;->charAt(I)C
move-result v4
const/16 v5, 0x10
invoke-static {v4, v5}, Ljava/lang/Character;->digit(CI)I
move-result v4
shl-int/lit8 v4, v4, 0x4
add-int/lit8 v6, v2, 0x1
invoke-virtual {p0, v6}, Ljava/lang/String;->charAt(I)C
move-result v6
invoke-static {v6, v5}, Ljava/lang/Character;->digit(CI)I
move-result v5
add-int/2addr v4, v5
int-to-byte v4, v4
aput-byte v4, v1, v3
.line 22
add-int/lit8 v2, v2, 0x2
goto :goto_0
.line 26
.end local v2 # "i":I
:cond_0
return-object v1
.end method
Ессно имя пакета и его сигнатуру надо заменить на настоящие.
Как это сделать - вам домашнее задание (получалка пишется за 5 минут в студии).