Difference between revisions of "Auto Assembler:alloc"

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Line 37: Line 37:
 
  alloc(SomeSymbol, 0x4, Tutorial-x86_64.exe+164C2)
 
  alloc(SomeSymbol, 0x4, Tutorial-x86_64.exe+164C2)
  
  alloc(SomeSymbol, 0x1000, Tutorial-x86_64.exe+164C2)
+
  alloc(SomeSymbol, 0x4, SomeAOBSymbol)
  
  alloc(SomeSymbol, $1000, Tutorial-x86_64.exe+164C2)
+
alloc(SomeSymbol, 0x1000, Tutorial-x86_64.exe)
 +
 
 +
  alloc(SomeSymbol, $1000, Tutorial-x86_64.exe)
  
 
  alloc(memloc1,4)
 
  alloc(memloc1,4)

Revision as of 12:48, 18 April 2018

Auto Assembler alloc(SymbolName, Size, AllocateNearThisAddress OPTIONAL)

Allocates a certain amount of memory and defines the symbol name in the script. If 'AllocateNearThisAddress' is specified CE will try to allocate the memory near that address. This is useful for 64-bit targets where the jump distance could be bigger than 2GB otherwise.

Note: Use dealloc to free the memory when done.

Command Parameters

Parameter Type Description
SymbolName string The symbol name to use for allocated memory
Size integer The byte size of the block of memory to allocate
AllocateNearThisAddress string The address to allocate near if given


Examples

alloc(SomeSymbol, 0x4)
alloc(SomeSymbol, 0x1000)
alloc(SomeSymbol, $1000)
alloc(SomeSymbol, 0x4, Tutorial-x86_64.exe+164C2)
alloc(SomeSymbol, 0x4, SomeAOBSymbol)
alloc(SomeSymbol, 0x1000, Tutorial-x86_64.exe)
alloc(SomeSymbol, $1000, Tutorial-x86_64.exe)
alloc(memloc1,4)

00451029:
jmp 00410000
nop
nop
nop

00410000:
mov [alloc1],esi
mov [esi+80],ebx
xor eax,eax
jmp 00451031

See also

Related Commands