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Add setConstant methods

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This commit is contained in:
de4dot 2012-07-29 14:21:13 +02:00
parent c924d84340
commit de8090df61
1 changed files with 22 additions and 6 deletions
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28
de4dot.code/deobfuscators/ConstantsReader.cs
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@ -28,7 +28,7 @@ namespace de4dot.code.deobfuscators {
protected IInstructions instructions;
protected IList<VariableDefinition> locals;
protected Dictionary<VariableDefinition, int> localsValues32 = new Dictionary<VariableDefinition, int>();
protected Dictionary<VariableDefinition, int> localsValues64 = new Dictionary<VariableDefinition, int>();
protected Dictionary<VariableDefinition, long> localsValues64 = new Dictionary<VariableDefinition, long>();
bool emulateConvInstrs;
public interface IInstructions {
@ -108,6 +108,22 @@ namespace de4dot.code.deobfuscators {
this.locals = locals;
}
public void setConstant32(VariableDefinition local, int value) {
localsValues32[local] = value;
}
public void setConstant32(VariableDefinition local, uint value) {
setConstant32(local, (int)value);
}
public void setConstant64(VariableDefinition local, long value) {
localsValues64[local] = value;
}
public void setConstant64(VariableDefinition local, ulong value) {
setConstant64(local, (long)value);
}
public bool getNextInt32(ref int index, out int val) {
for (; index < instructions.Count; index++) {
var instr = instructions[index];
@ -139,11 +155,11 @@ namespace de4dot.code.deobfuscators {
if (instr.OpCode.Code == Code.Ldc_I8)
return true;
if (DotNetUtils.isLdloc(instr)) {
int tmp;
long tmp;
return getLocalConstant64(instr, out tmp);
}
if (DotNetUtils.isLdarg(instr)) {
int tmp;
long tmp;
return getArgConstant64(instr, out tmp);
}
return false;
@ -347,7 +363,7 @@ done:
var stack = new Stack<ConstantInfo<long>>();
int op1;
long op1;
ConstantInfo<long> info1, info2;
for (; index < instructions.Count; index++) {
var instr = instructions[index];
@ -529,7 +545,7 @@ done:
return false;
}
protected virtual bool getLocalConstant64(Instruction instr, out int value) {
protected virtual bool getLocalConstant64(Instruction instr, out long value) {
value = 0;
if (locals == null)
return false;
@ -541,7 +557,7 @@ done:
return localsValues64.TryGetValue(local, out value);
}
protected virtual bool getArgConstant64(Instruction instr, out int value) {
protected virtual bool getArgConstant64(Instruction instr, out long value) {
value = 0;
return false;
}