Arm: fixdstoffset computation, add asm reg test

1 files changed, 79 insertions, 0 deletions

diff --git a/example/asm_armt.py b/example/asm_armt.py
new file mode 100644
index 00000000..ccbdad3a
--- /dev/null
+++ b/example/asm_armt.py
@@ -0,0 +1,79 @@
+#! /usr/bin/env python
+
+from miasm2.core.cpu import parse_ast
+from miasm2.arch.arm.arch import mn_armt, base_expr, variable
+from miasm2.core import parse_asm
+from miasm2.expression.expression import *
+from miasm2.core import asmbloc
+from elfesteem.strpatchwork import StrPatchwork
+from pdb import pm
+
+my_mn = mn_armt
+
+reg_and_id = dict(mn_armt.regs.all_regs_ids_byname)
+
+
+def my_ast_int2expr(a):
+    return ExprInt32(a)
+
+
+def my_ast_id2expr(t):
+    return reg_and_id.get(t, ExprId(t, size=32))
+
+my_var_parser = parse_ast(my_ast_id2expr, my_ast_int2expr)
+base_expr.setParseAction(my_var_parser)
+
+blocs, symbol_pool = parse_asm.parse_txt(my_mn, "armt", '''
+memcpy:
+     PUSH    {R0-R3, LR}
+     B       test_end
+loop:
+     LDRB    R3, [R1]
+     STRB    R3, [R0]
+     ADDS    R0, R0, 1
+     ADDS    R1, R1, 1
+     SUBS    R2, R2, 1
+test_end:
+     CMP     R2, 0
+     BNE     loop
+     POP     {R0-R3, PC}
+main:
+     PUSH    {LR}
+     SUB     SP, 0x100
+     MOV     R0, SP
+     ADD     R1, PC, mystr-$+6
+     MOV     R0, R0
+     EORS    R2, R2
+     ADDS    R2, R2, 0x4
+     BL      memcpy
+     ADD     SP, 0x100
+     POP     {PC}
+
+mystr:
+.string "toto"
+''')
+
+# fix shellcode addr
+symbol_pool.set_offset(symbol_pool.getby_name("main"), 0x3a4b8)
+
+for b in blocs[0]:
+    print b
+# graph sc####
+g = asmbloc.bloc2graph(blocs[0])
+open("graph.txt", "w").write(g)
+
+s = StrPatchwork(open('libandroid_runtime.so').read())
+
+print "symbols"
+print symbol_pool
+# dont erase from start to shell code padading
+resolved_b, patches = asmbloc.asm_resolve_final(
+    my_mn, 'armt', blocs[0], symbol_pool)
+print patches
+
+
+
+for offset, raw in patches.items():
+    s[offset] = raw
+
+open('demo_armt.bin', 'wb').write(str(s))