The windows utility of dumpbin can be used for digging into binary files for .NET exe/dll assemblies, as is explained in this site.
dumpbin /clrheader lib.dll
Dump of file lib.dll
File Type: DLL
clr Header:
48 cb
2.00 runtime version
210C [ 374] RVA [size] of MetaData Directory
9 flags
0 entry point token
0 [ 0] RVA [size] of Resources Directory
2050 [ 80] RVA [size] of StrongNameSignature Directory
0 [ 0] RVA [size] of CodeManagerTable Directory
0 [ 0] RVA [size] of VTableFixups Directory
0 [ 0] RVA [size] of ExportAddressTableJumps Directory
What would be the equivalent to this tool with mono?