1 files changed, 61 insertions, 0 deletions
diff --git a/example/asm/box_x86_32.py b/example/asm/box_x86_32.py
new file mode 100644
index 00000000..def7af99
--- /dev/null
+++ b/example/asm/box_x86_32.py
@@ -0,0 +1,61 @@
+#! /usr/bin/env python
+from argparse import ArgumentParser
+from pdb import pm
+
+from elfesteem import pe_init
+
+from miasm2.core.cpu import parse_ast
+from miasm2.arch.x86.arch import mn_x86, base_expr
+from miasm2.core import parse_asm
+import miasm2.expression.expression as m2_expr
+from miasm2.core import asmbloc
+
+parser = ArgumentParser("x86 32bits assembler")
+parser.add_argument("source", help="Source to assemble")
+args = parser.parse_args()
+
+pe = pe_init.PE()
+s_text = pe.SHList.add_section(name="text", addr=0x1000, rawsize=0x1000)
+s_iat = pe.SHList.add_section(name="iat", rawsize=0x100)
+new_dll = [({"name": "USER32.dll",
+             "firstthunk": s_iat.addr}, ["MessageBoxA"])]
+pe.DirImport.add_dlldesc(new_dll)
+s_myimp = pe.SHList.add_section(name="myimp", rawsize=len(pe.DirImport))
+pe.DirImport.set_rva(s_myimp.addr)
+
+reg_and_id = dict(mn_x86.regs.all_regs_ids_byname)
+
+
+def my_ast_int2expr(a):
+    return m2_expr.ExprInt32(a)
+
+
+def my_ast_id2expr(t):
+    return reg_and_id.get(t, m2_expr.ExprId(t, size=32))
+
+my_var_parser = parse_ast(my_ast_id2expr, my_ast_int2expr)
+base_expr.setParseAction(my_var_parser)
+
+with open(args.source) as fstream:
+    source = fstream.read()
+
+blocs, symbol_pool = parse_asm.parse_txt(mn_x86, 32, source)
+
+# fix shellcode addr
+symbol_pool.set_offset(symbol_pool.getby_name("main"), pe.rva2virt(s_text.addr))
+symbol_pool.set_offset(symbol_pool.getby_name_create("MessageBoxA"),
+                       pe.DirImport.get_funcvirt('MessageBoxA'))
+pe.Opthdr.AddressOfEntryPoint = s_text.addr
+
+for bloc in blocs[0]:
+    print bloc
+
+resolved_b, patches = asmbloc.asm_resolve_final(
+    mn_x86, blocs[0], symbol_pool)
+print patches
+
+for offset, raw in patches.items():
+    pe.virt[offset] = raw
+
+output = args.source.replace(".S", ".bin")
+open(output, 'wb').write(str(pe))