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Fixed PE export table enumeration logic #129

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Fixed PE export table enumeration logic #129

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15 changes: 12 additions & 3 deletions src/file_format/pe.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -100,9 +100,10 @@ struct OptionalCOFFHeader {
struct ExportedSymbolsTableDef {
_unk: [u8; 0x14],
number_of_functions: u32,
_unk_1: u32,
number_of_names: u32,
function_address_array_index: u32,
function_name_array_index: u32,
name_ordinals_array_index: u32,
}

/// The machine type (architecture) of a module in a process. An image file can
Expand Down Expand Up @@ -340,12 +341,20 @@ pub fn symbols(
}
.unwrap_or_default();

(0..symbols_def.number_of_functions).filter_map(move |i| {
(0..symbols_def.number_of_names).filter_map(move |i| {
let ordinal = process
.read::<u16>(address + symbols_def.name_ordinals_array_index + i.wrapping_mul(2))
.ok()
.map(|val| val as u32)
.filter(|&val| val < symbols_def.number_of_functions)?;

Some(Symbol {
address: address
+ process
.read::<u32>(
address + symbols_def.function_address_array_index + i.wrapping_mul(4),
address
+ symbols_def.function_address_array_index
+ ordinal.wrapping_mul(4),
)
.ok()?,
name_addr: address
Expand Down
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